/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe-SemanticLooper.epf -i ../../../trunk/examples/svcomp/pthread-lit/fkp2013-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-16 05:12:40,860 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 05:12:40,863 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 05:12:40,887 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 05:12:40,887 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 05:12:40,888 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 05:12:40,890 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 05:12:40,892 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 05:12:40,899 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 05:12:40,902 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 05:12:40,903 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 05:12:40,904 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 05:12:40,904 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 05:12:40,907 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 05:12:40,908 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 05:12:40,909 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 05:12:40,911 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 05:12:40,913 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 05:12:40,918 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 05:12:40,922 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 05:12:40,924 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 05:12:40,926 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 05:12:40,928 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 05:12:40,929 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 05:12:40,936 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-16 05:12:40,957 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 05:12:40,958 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 05:12:40,958 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 05:12:40,962 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-SemanticLooper.epf [2020-10-16 05:12:40,984 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 05:12:40,984 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 05:12:40,985 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 05:12:40,985 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 05:12:40,985 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 05:12:40,986 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 05:12:40,986 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 05:12:40,986 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 05:12:40,986 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 05:12:40,987 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 05:12:40,987 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 05:12:40,987 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 05:12:40,987 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 05:12:40,987 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 05:12:40,988 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 05:12:40,988 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 05:12:40,988 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 05:12:40,988 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 05:12:40,988 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 05:12:40,989 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 05:12:40,989 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 05:12:40,989 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 05:12:40,989 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 05:12:40,989 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 05:12:40,990 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 05:12:40,990 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 05:12:40,990 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 05:12:40,990 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-16 05:12:40,990 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 05:12:41,307 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 05:12:41,324 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 05:12:41,328 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 05:12:41,330 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 05:12:41,330 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 05:12:41,331 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-lit/fkp2013-1.i [2020-10-16 05:12:41,392 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a941d406/d7b53fb3c5e84198993ecb544f251f61/FLAGcacfae35f [2020-10-16 05:12:41,894 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 05:12:41,895 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/fkp2013-1.i [2020-10-16 05:12:41,909 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a941d406/d7b53fb3c5e84198993ecb544f251f61/FLAGcacfae35f [2020-10-16 05:12:42,196 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a941d406/d7b53fb3c5e84198993ecb544f251f61 [2020-10-16 05:12:42,205 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 05:12:42,207 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 05:12:42,208 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 05:12:42,208 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 05:12:42,212 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 05:12:42,213 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:12:42" (1/1) ... [2020-10-16 05:12:42,217 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@624fc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:12:42, skipping insertion in model container [2020-10-16 05:12:42,218 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:12:42" (1/1) ... [2020-10-16 05:12:42,227 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 05:12:42,287 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 05:12:42,712 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 05:12:42,722 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 05:12:42,761 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 05:12:42,836 INFO L208 MainTranslator]: Completed translation [2020-10-16 05:12:42,837 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:12:42 WrapperNode [2020-10-16 05:12:42,837 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 05:12:42,838 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 05:12:42,838 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 05:12:42,838 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 05:12:42,847 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:12:42" (1/1) ... [2020-10-16 05:12:42,880 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:12:42" (1/1) ... [2020-10-16 05:12:42,908 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 05:12:42,910 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 05:12:42,910 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 05:12:42,910 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 05:12:42,917 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:12:42" (1/1) ... [2020-10-16 05:12:42,918 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:12:42" (1/1) ... [2020-10-16 05:12:42,920 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:12:42" (1/1) ... [2020-10-16 05:12:42,920 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:12:42" (1/1) ... [2020-10-16 05:12:42,926 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:12:42" (1/1) ... [2020-10-16 05:12:42,930 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:12:42" (1/1) ... [2020-10-16 05:12:42,932 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:12:42" (1/1) ... [2020-10-16 05:12:42,934 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 05:12:42,935 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 05:12:42,935 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 05:12:42,935 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 05:12:42,936 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:12:42" (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 [2020-10-16 05:12:42,991 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2020-10-16 05:12:42,991 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2020-10-16 05:12:42,991 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-10-16 05:12:42,991 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-10-16 05:12:42,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 05:12:42,991 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 05:12:42,992 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 05:12:42,992 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 05:12:42,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 05:12:42,993 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 05:12:43,320 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 05:12:43,321 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-10-16 05:12:43,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:12:43 BoogieIcfgContainer [2020-10-16 05:12:43,322 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 05:12:43,324 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 05:12:43,324 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 05:12:43,327 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 05:12:43,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 05:12:42" (1/3) ... [2020-10-16 05:12:43,328 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ba7fac1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:12:43, skipping insertion in model container [2020-10-16 05:12:43,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:12:42" (2/3) ... [2020-10-16 05:12:43,329 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ba7fac1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:12:43, skipping insertion in model container [2020-10-16 05:12:43,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:12:43" (3/3) ... [2020-10-16 05:12:43,331 INFO L111 eAbstractionObserver]: Analyzing ICFG fkp2013-1.i [2020-10-16 05:12:43,342 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 05:12:43,350 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 05:12:43,351 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 05:12:43,375 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:43,376 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:43,377 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:43,377 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:43,378 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:43,379 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:43,380 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:43,380 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:43,380 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:43,381 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:43,382 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:43,382 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:43,382 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:43,382 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:43,383 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:43,383 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:43,383 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:43,383 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:43,383 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:43,384 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:43,384 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:43,387 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:43,388 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:43,388 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:43,388 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:43,389 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:43,393 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:43,394 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:43,394 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:43,394 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:43,394 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:43,395 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:43,412 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 05:12:43,431 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 05:12:43,431 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 05:12:43,432 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 05:12:43,432 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 05:12:43,432 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 05:12:43,432 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 05:12:43,432 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 05:12:43,432 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 05:12:43,443 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 55 places, 51 transitions, 112 flow [2020-10-16 05:12:43,478 INFO L129 PetriNetUnfolder]: 3/61 cut-off events. [2020-10-16 05:12:43,479 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:12:43,484 INFO L80 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 61 events. 3/61 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 100 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 49. Up to 4 conditions per place. [2020-10-16 05:12:43,485 INFO L82 GeneralOperation]: Start removeDead. Operand has 55 places, 51 transitions, 112 flow [2020-10-16 05:12:43,491 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 50 transitions, 108 flow [2020-10-16 05:12:43,493 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 05:12:43,496 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 54 places, 50 transitions, 108 flow [2020-10-16 05:12:43,498 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 54 places, 50 transitions, 108 flow [2020-10-16 05:12:43,498 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 54 places, 50 transitions, 108 flow [2020-10-16 05:12:43,517 INFO L129 PetriNetUnfolder]: 3/61 cut-off events. [2020-10-16 05:12:43,517 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:12:43,518 INFO L80 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 61 events. 3/61 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 94 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 49. Up to 4 conditions per place. [2020-10-16 05:12:43,520 INFO L117 LiptonReduction]: Number of co-enabled transitions 692 [2020-10-16 05:12:44,400 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2020-10-16 05:12:44,667 INFO L132 LiptonReduction]: Checked pairs total: 670 [2020-10-16 05:12:44,668 INFO L134 LiptonReduction]: Total number of compositions: 47 [2020-10-16 05:12:44,670 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1179 [2020-10-16 05:12:44,676 INFO L129 PetriNetUnfolder]: 0/3 cut-off events. [2020-10-16 05:12:44,676 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:12:44,676 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:12:44,677 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2020-10-16 05:12:44,678 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 05:12:44,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:12:44,684 INFO L82 PathProgramCache]: Analyzing trace with hash 208056, now seen corresponding path program 1 times [2020-10-16 05:12:44,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:12:44,694 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168708376] [2020-10-16 05:12:44,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:12:44,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:12:44,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:12:44,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168708376] [2020-10-16 05:12:44,879 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:12:44,880 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 05:12:44,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521874728] [2020-10-16 05:12:44,891 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 05:12:44,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:12:44,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 05:12:44,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 05:12:44,910 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 98 [2020-10-16 05:12:44,912 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 11 transitions, 30 flow. Second operand 3 states. [2020-10-16 05:12:44,912 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:12:44,913 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 98 [2020-10-16 05:12:44,914 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:12:44,941 INFO L129 PetriNetUnfolder]: 1/15 cut-off events. [2020-10-16 05:12:44,941 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:12:44,941 INFO L80 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 15 events. 1/15 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 19 event pairs, 0 based on Foata normal form. 0/11 useless extension candidates. Maximal degree in co-relation 21. Up to 5 conditions per place. [2020-10-16 05:12:44,942 INFO L132 encePairwiseOnDemand]: 95/98 looper letters, 3 selfloop transitions, 2 changer transitions 0/12 dead transitions. [2020-10-16 05:12:44,943 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 12 transitions, 42 flow [2020-10-16 05:12:44,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 05:12:44,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 05:12:44,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 219 transitions. [2020-10-16 05:12:44,959 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7448979591836735 [2020-10-16 05:12:44,960 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 219 transitions. [2020-10-16 05:12:44,961 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 219 transitions. [2020-10-16 05:12:44,962 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:12:44,965 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 219 transitions. [2020-10-16 05:12:44,969 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 05:12:44,975 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 05:12:44,975 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 05:12:44,978 INFO L185 Difference]: Start difference. First operand has 17 places, 11 transitions, 30 flow. Second operand 3 states and 219 transitions. [2020-10-16 05:12:44,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 12 transitions, 42 flow [2020-10-16 05:12:44,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 12 transitions, 41 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 05:12:44,984 INFO L241 Difference]: Finished difference. Result has 19 places, 11 transitions, 37 flow [2020-10-16 05:12:44,986 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=29, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=37, PETRI_PLACES=19, PETRI_TRANSITIONS=11} [2020-10-16 05:12:44,987 INFO L342 CegarLoopForPetriNet]: 17 programPoint places, 2 predicate places. [2020-10-16 05:12:44,988 INFO L481 AbstractCegarLoop]: Abstraction has has 19 places, 11 transitions, 37 flow [2020-10-16 05:12:44,988 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 05:12:44,988 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:12:44,988 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:12:44,989 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 05:12:44,989 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 05:12:44,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:12:44,989 INFO L82 PathProgramCache]: Analyzing trace with hash -1139052385, now seen corresponding path program 1 times [2020-10-16 05:12:44,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:12:44,990 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238531092] [2020-10-16 05:12:44,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:12:45,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:12:45,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:12:45,065 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238531092] [2020-10-16 05:12:45,066 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:12:45,066 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 05:12:45,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423421121] [2020-10-16 05:12:45,068 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:12:45,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:12:45,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:12:45,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:12:45,073 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 98 [2020-10-16 05:12:45,073 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 11 transitions, 37 flow. Second operand 4 states. [2020-10-16 05:12:45,073 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:12:45,074 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 98 [2020-10-16 05:12:45,074 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:12:45,096 INFO L129 PetriNetUnfolder]: 1/14 cut-off events. [2020-10-16 05:12:45,096 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-10-16 05:12:45,097 INFO L80 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 14 events. 1/14 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 13 event pairs, 0 based on Foata normal form. 1/12 useless extension candidates. Maximal degree in co-relation 23. Up to 3 conditions per place. [2020-10-16 05:12:45,098 INFO L132 encePairwiseOnDemand]: 95/98 looper letters, 2 selfloop transitions, 2 changer transitions 0/11 dead transitions. [2020-10-16 05:12:45,098 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 11 transitions, 43 flow [2020-10-16 05:12:45,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 05:12:45,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 05:12:45,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 289 transitions. [2020-10-16 05:12:45,104 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7372448979591837 [2020-10-16 05:12:45,105 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 289 transitions. [2020-10-16 05:12:45,105 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 289 transitions. [2020-10-16 05:12:45,106 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:12:45,106 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 289 transitions. [2020-10-16 05:12:45,107 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 05:12:45,109 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 05:12:45,111 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 05:12:45,112 INFO L185 Difference]: Start difference. First operand has 19 places, 11 transitions, 37 flow. Second operand 4 states and 289 transitions. [2020-10-16 05:12:45,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 11 transitions, 43 flow [2020-10-16 05:12:45,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 11 transitions, 37 flow, removed 0 selfloop flow, removed 3 redundant places. [2020-10-16 05:12:45,113 INFO L241 Difference]: Finished difference. Result has 18 places, 10 transitions, 31 flow [2020-10-16 05:12:45,113 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=27, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=31, PETRI_PLACES=18, PETRI_TRANSITIONS=10} [2020-10-16 05:12:45,115 INFO L342 CegarLoopForPetriNet]: 17 programPoint places, 1 predicate places. [2020-10-16 05:12:45,115 INFO L481 AbstractCegarLoop]: Abstraction has has 18 places, 10 transitions, 31 flow [2020-10-16 05:12:45,115 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:12:45,115 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:12:45,115 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-10-16 05:12:45,116 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 05:12:45,116 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 05:12:45,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:12:45,116 INFO L82 PathProgramCache]: Analyzing trace with hash -950894116, now seen corresponding path program 1 times [2020-10-16 05:12:45,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:12:45,117 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072210283] [2020-10-16 05:12:45,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:12:45,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 05:12:45,170 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 05:12:45,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 05:12:45,185 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 05:12:45,212 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 05:12:45,213 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 05:12:45,213 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 05:12:45,215 WARN L371 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-16 05:12:45,215 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2020-10-16 05:12:45,224 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,224 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,224 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,224 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,225 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,225 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,225 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,225 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,225 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,226 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,226 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,226 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,226 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,226 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,226 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,227 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,227 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,227 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,228 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,228 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,228 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,228 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,228 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,229 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,229 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,229 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,229 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,229 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,230 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,230 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,230 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,231 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,231 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,231 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,231 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,232 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,232 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,232 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,232 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,232 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,233 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,233 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,233 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,233 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,234 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,234 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,234 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,236 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,236 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,236 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,237 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,237 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,238 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,238 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,238 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,239 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,239 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,239 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,240 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,241 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,241 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,241 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,241 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,242 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:45,243 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-16 05:12:45,244 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 05:12:45,244 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 05:12:45,244 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 05:12:45,244 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 05:12:45,244 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 05:12:45,244 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 05:12:45,244 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 05:12:45,245 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 05:12:45,247 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 69 transitions, 162 flow [2020-10-16 05:12:45,263 INFO L129 PetriNetUnfolder]: 4/83 cut-off events. [2020-10-16 05:12:45,264 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-10-16 05:12:45,265 INFO L80 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 83 events. 4/83 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 141 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 92. Up to 6 conditions per place. [2020-10-16 05:12:45,265 INFO L82 GeneralOperation]: Start removeDead. Operand has 76 places, 69 transitions, 162 flow [2020-10-16 05:12:45,266 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 63 places, 57 transitions, 129 flow [2020-10-16 05:12:45,266 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 05:12:45,266 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 63 places, 57 transitions, 129 flow [2020-10-16 05:12:45,267 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 63 places, 57 transitions, 129 flow [2020-10-16 05:12:45,267 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 63 places, 57 transitions, 129 flow [2020-10-16 05:12:45,286 INFO L129 PetriNetUnfolder]: 4/83 cut-off events. [2020-10-16 05:12:45,287 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-10-16 05:12:45,288 INFO L80 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 83 events. 4/83 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 147 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 75. Up to 6 conditions per place. [2020-10-16 05:12:45,291 INFO L117 LiptonReduction]: Number of co-enabled transitions 1108 [2020-10-16 05:12:46,109 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-10-16 05:12:46,225 INFO L132 LiptonReduction]: Checked pairs total: 1246 [2020-10-16 05:12:46,226 INFO L134 LiptonReduction]: Total number of compositions: 49 [2020-10-16 05:12:46,226 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 960 [2020-10-16 05:12:46,228 INFO L129 PetriNetUnfolder]: 0/4 cut-off events. [2020-10-16 05:12:46,228 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:12:46,228 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:12:46,228 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2020-10-16 05:12:46,229 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:12:46,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:12:46,229 INFO L82 PathProgramCache]: Analyzing trace with hash 340131, now seen corresponding path program 1 times [2020-10-16 05:12:46,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:12:46,230 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375591571] [2020-10-16 05:12:46,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:12:46,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:12:46,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:12:46,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375591571] [2020-10-16 05:12:46,266 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:12:46,266 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 05:12:46,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316931185] [2020-10-16 05:12:46,266 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 05:12:46,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:12:46,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 05:12:46,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 05:12:46,268 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 118 [2020-10-16 05:12:46,269 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 16 transitions, 47 flow. Second operand 3 states. [2020-10-16 05:12:46,269 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:12:46,269 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 118 [2020-10-16 05:12:46,269 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:12:46,303 INFO L129 PetriNetUnfolder]: 20/58 cut-off events. [2020-10-16 05:12:46,303 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-10-16 05:12:46,304 INFO L80 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 58 events. 20/58 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 156 event pairs, 6 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 105. Up to 31 conditions per place. [2020-10-16 05:12:46,304 INFO L132 encePairwiseOnDemand]: 114/118 looper letters, 9 selfloop transitions, 3 changer transitions 0/21 dead transitions. [2020-10-16 05:12:46,305 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 21 transitions, 81 flow [2020-10-16 05:12:46,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 05:12:46,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 05:12:46,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 265 transitions. [2020-10-16 05:12:46,307 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.748587570621469 [2020-10-16 05:12:46,307 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 265 transitions. [2020-10-16 05:12:46,308 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 265 transitions. [2020-10-16 05:12:46,308 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:12:46,308 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 265 transitions. [2020-10-16 05:12:46,309 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 05:12:46,310 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 05:12:46,311 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 05:12:46,311 INFO L185 Difference]: Start difference. First operand has 24 places, 16 transitions, 47 flow. Second operand 3 states and 265 transitions. [2020-10-16 05:12:46,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 21 transitions, 81 flow [2020-10-16 05:12:46,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 21 transitions, 78 flow, removed 1 selfloop flow, removed 1 redundant places. [2020-10-16 05:12:46,312 INFO L241 Difference]: Finished difference. Result has 26 places, 18 transitions, 63 flow [2020-10-16 05:12:46,313 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=23, 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=63, PETRI_PLACES=26, PETRI_TRANSITIONS=18} [2020-10-16 05:12:46,313 INFO L342 CegarLoopForPetriNet]: 24 programPoint places, 2 predicate places. [2020-10-16 05:12:46,313 INFO L481 AbstractCegarLoop]: Abstraction has has 26 places, 18 transitions, 63 flow [2020-10-16 05:12:46,313 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 05:12:46,313 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:12:46,313 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:12:46,314 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 05:12:46,314 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:12:46,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:12:46,314 INFO L82 PathProgramCache]: Analyzing trace with hash 361225747, now seen corresponding path program 1 times [2020-10-16 05:12:46,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:12:46,315 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423305598] [2020-10-16 05:12:46,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:12:46,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:12:46,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:12:46,383 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423305598] [2020-10-16 05:12:46,384 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:12:46,384 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:12:46,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933247120] [2020-10-16 05:12:46,384 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 05:12:46,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:12:46,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 05:12:46,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 05:12:46,387 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 118 [2020-10-16 05:12:46,388 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 18 transitions, 63 flow. Second operand 5 states. [2020-10-16 05:12:46,388 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:12:46,390 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 118 [2020-10-16 05:12:46,390 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:12:46,486 INFO L129 PetriNetUnfolder]: 18/64 cut-off events. [2020-10-16 05:12:46,487 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-10-16 05:12:46,487 INFO L80 FinitePrefix]: Finished finitePrefix Result has 160 conditions, 64 events. 18/64 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 187 event pairs, 4 based on Foata normal form. 3/60 useless extension candidates. Maximal degree in co-relation 148. Up to 22 conditions per place. [2020-10-16 05:12:46,488 INFO L132 encePairwiseOnDemand]: 113/118 looper letters, 13 selfloop transitions, 7 changer transitions 0/28 dead transitions. [2020-10-16 05:12:46,488 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 28 transitions, 130 flow [2020-10-16 05:12:46,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 05:12:46,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 05:12:46,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 513 transitions. [2020-10-16 05:12:46,492 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7245762711864406 [2020-10-16 05:12:46,492 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 513 transitions. [2020-10-16 05:12:46,492 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 513 transitions. [2020-10-16 05:12:46,495 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:12:46,495 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 513 transitions. [2020-10-16 05:12:46,497 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 05:12:46,502 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 05:12:46,502 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 05:12:46,502 INFO L185 Difference]: Start difference. First operand has 26 places, 18 transitions, 63 flow. Second operand 6 states and 513 transitions. [2020-10-16 05:12:46,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 28 transitions, 130 flow [2020-10-16 05:12:46,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 28 transitions, 126 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 05:12:46,505 INFO L241 Difference]: Finished difference. Result has 33 places, 21 transitions, 99 flow [2020-10-16 05:12:46,505 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=99, PETRI_PLACES=33, PETRI_TRANSITIONS=21} [2020-10-16 05:12:46,506 INFO L342 CegarLoopForPetriNet]: 24 programPoint places, 9 predicate places. [2020-10-16 05:12:46,506 INFO L481 AbstractCegarLoop]: Abstraction has has 33 places, 21 transitions, 99 flow [2020-10-16 05:12:46,506 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 05:12:46,506 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:12:46,506 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:12:46,506 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 05:12:46,507 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:12:46,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:12:46,508 INFO L82 PathProgramCache]: Analyzing trace with hash -1537782149, now seen corresponding path program 1 times [2020-10-16 05:12:46,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:12:46,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591143529] [2020-10-16 05:12:46,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:12:46,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:12:46,589 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 05:12:46,590 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591143529] [2020-10-16 05:12:46,590 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:12:46,590 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:12:46,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418120789] [2020-10-16 05:12:46,591 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 05:12:46,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:12:46,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 05:12:46,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 05:12:46,593 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 118 [2020-10-16 05:12:46,593 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 21 transitions, 99 flow. Second operand 5 states. [2020-10-16 05:12:46,593 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:12:46,593 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 118 [2020-10-16 05:12:46,594 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:12:46,668 INFO L129 PetriNetUnfolder]: 22/82 cut-off events. [2020-10-16 05:12:46,668 INFO L130 PetriNetUnfolder]: For 71/71 co-relation queries the response was YES. [2020-10-16 05:12:46,669 INFO L80 FinitePrefix]: Finished finitePrefix Result has 238 conditions, 82 events. 22/82 cut-off events. For 71/71 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 286 event pairs, 5 based on Foata normal form. 4/76 useless extension candidates. Maximal degree in co-relation 222. Up to 21 conditions per place. [2020-10-16 05:12:46,669 INFO L132 encePairwiseOnDemand]: 113/118 looper letters, 14 selfloop transitions, 9 changer transitions 0/31 dead transitions. [2020-10-16 05:12:46,670 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 31 transitions, 188 flow [2020-10-16 05:12:46,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 05:12:46,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 05:12:46,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 514 transitions. [2020-10-16 05:12:46,672 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7259887005649718 [2020-10-16 05:12:46,672 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 514 transitions. [2020-10-16 05:12:46,672 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 514 transitions. [2020-10-16 05:12:46,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:12:46,673 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 514 transitions. [2020-10-16 05:12:46,674 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 05:12:46,676 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 05:12:46,676 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 05:12:46,676 INFO L185 Difference]: Start difference. First operand has 33 places, 21 transitions, 99 flow. Second operand 6 states and 514 transitions. [2020-10-16 05:12:46,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 31 transitions, 188 flow [2020-10-16 05:12:46,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 31 transitions, 177 flow, removed 2 selfloop flow, removed 2 redundant places. [2020-10-16 05:12:46,679 INFO L241 Difference]: Finished difference. Result has 39 places, 24 transitions, 141 flow [2020-10-16 05:12:46,679 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=141, PETRI_PLACES=39, PETRI_TRANSITIONS=24} [2020-10-16 05:12:46,679 INFO L342 CegarLoopForPetriNet]: 24 programPoint places, 15 predicate places. [2020-10-16 05:12:46,680 INFO L481 AbstractCegarLoop]: Abstraction has has 39 places, 24 transitions, 141 flow [2020-10-16 05:12:46,680 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 05:12:46,680 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:12:46,680 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2020-10-16 05:12:46,680 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 05:12:46,681 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:12:46,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:12:46,681 INFO L82 PathProgramCache]: Analyzing trace with hash -429286856, now seen corresponding path program 1 times [2020-10-16 05:12:46,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:12:46,681 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286690633] [2020-10-16 05:12:46,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:12:46,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 05:12:46,696 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 05:12:46,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 05:12:46,706 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 05:12:46,713 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 05:12:46,713 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 05:12:46,713 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 05:12:46,714 WARN L371 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-16 05:12:46,715 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2020-10-16 05:12:46,725 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:46,726 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:46,726 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:46,726 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:46,726 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:46,726 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:46,727 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:46,727 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:46,727 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:46,727 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:46,727 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:46,727 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:46,728 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:46,728 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:46,728 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:46,728 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:46,728 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:46,729 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:46,729 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:46,729 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:46,729 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:46,729 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:46,730 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:46,730 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:46,730 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:46,730 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:46,730 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:46,731 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:46,731 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:46,731 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:46,731 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:46,732 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:46,732 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:46,732 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:46,732 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:46,732 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:46,733 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:46,733 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:46,733 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:46,734 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:46,734 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:46,734 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:46,734 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:46,734 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:46,735 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:46,735 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:46,735 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:46,735 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:46,735 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:46,736 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:46,736 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:46,736 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:46,736 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:46,737 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:46,737 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:46,737 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:46,737 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:46,737 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:46,738 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:46,738 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:46,738 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:46,738 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:46,738 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:46,739 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:46,739 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:46,739 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:46,740 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:46,740 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:46,741 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:46,742 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:46,742 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:46,742 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:46,742 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:46,744 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:46,744 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:46,744 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:46,744 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:46,745 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:46,746 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:46,746 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:46,746 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:46,747 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:46,747 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:46,747 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:46,748 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:46,749 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:46,749 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:46,749 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:46,749 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:46,750 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:46,752 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:46,752 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:46,752 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:46,752 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:46,753 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:46,753 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:46,754 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-16 05:12:46,754 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 05:12:46,755 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 05:12:46,755 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 05:12:46,755 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 05:12:46,755 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 05:12:46,755 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 05:12:46,755 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 05:12:46,755 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 05:12:46,758 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 97 places, 87 transitions, 216 flow [2020-10-16 05:12:46,789 INFO L129 PetriNetUnfolder]: 5/105 cut-off events. [2020-10-16 05:12:46,790 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-10-16 05:12:46,790 INFO L80 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 105 events. 5/105 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 187 event pairs, 0 based on Foata normal form. 0/95 useless extension candidates. Maximal degree in co-relation 119. Up to 8 conditions per place. [2020-10-16 05:12:46,791 INFO L82 GeneralOperation]: Start removeDead. Operand has 97 places, 87 transitions, 216 flow [2020-10-16 05:12:46,792 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 72 places, 64 transitions, 152 flow [2020-10-16 05:12:46,792 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 05:12:46,792 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 72 places, 64 transitions, 152 flow [2020-10-16 05:12:46,792 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 72 places, 64 transitions, 152 flow [2020-10-16 05:12:46,792 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 72 places, 64 transitions, 152 flow [2020-10-16 05:12:46,802 INFO L129 PetriNetUnfolder]: 5/105 cut-off events. [2020-10-16 05:12:46,803 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-10-16 05:12:46,803 INFO L80 FinitePrefix]: Finished finitePrefix Result has 124 conditions, 105 events. 5/105 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 178 event pairs, 0 based on Foata normal form. 0/95 useless extension candidates. Maximal degree in co-relation 102. Up to 8 conditions per place. [2020-10-16 05:12:46,806 INFO L117 LiptonReduction]: Number of co-enabled transitions 1608 [2020-10-16 05:12:47,772 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-10-16 05:12:47,826 INFO L132 LiptonReduction]: Checked pairs total: 2267 [2020-10-16 05:12:47,826 INFO L134 LiptonReduction]: Total number of compositions: 52 [2020-10-16 05:12:47,826 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1034 [2020-10-16 05:12:47,828 INFO L129 PetriNetUnfolder]: 0/3 cut-off events. [2020-10-16 05:12:47,828 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:12:47,828 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:12:47,828 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2020-10-16 05:12:47,829 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:12:47,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:12:47,829 INFO L82 PathProgramCache]: Analyzing trace with hash 498794, now seen corresponding path program 1 times [2020-10-16 05:12:47,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:12:47,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172064067] [2020-10-16 05:12:47,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:12:47,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:12:47,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:12:47,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172064067] [2020-10-16 05:12:47,855 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:12:47,855 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 05:12:47,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041979796] [2020-10-16 05:12:47,856 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 05:12:47,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:12:47,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 05:12:47,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 05:12:47,857 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 139 [2020-10-16 05:12:47,858 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 19 transitions, 62 flow. Second operand 3 states. [2020-10-16 05:12:47,858 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:12:47,858 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 139 [2020-10-16 05:12:47,858 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:12:47,949 INFO L129 PetriNetUnfolder]: 112/205 cut-off events. [2020-10-16 05:12:47,950 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-10-16 05:12:47,951 INFO L80 FinitePrefix]: Finished finitePrefix Result has 410 conditions, 205 events. 112/205 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 724 event pairs, 43 based on Foata normal form. 0/160 useless extension candidates. Maximal degree in co-relation 399. Up to 153 conditions per place. [2020-10-16 05:12:47,953 INFO L132 encePairwiseOnDemand]: 134/139 looper letters, 12 selfloop transitions, 4 changer transitions 0/26 dead transitions. [2020-10-16 05:12:47,954 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 26 transitions, 108 flow [2020-10-16 05:12:47,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 05:12:47,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 05:12:47,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 308 transitions. [2020-10-16 05:12:47,961 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7386091127098321 [2020-10-16 05:12:47,961 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 308 transitions. [2020-10-16 05:12:47,962 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 308 transitions. [2020-10-16 05:12:47,963 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:12:47,963 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 308 transitions. [2020-10-16 05:12:47,965 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 05:12:47,967 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 05:12:47,967 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 05:12:47,967 INFO L185 Difference]: Start difference. First operand has 29 places, 19 transitions, 62 flow. Second operand 3 states and 308 transitions. [2020-10-16 05:12:47,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 26 transitions, 108 flow [2020-10-16 05:12:47,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 26 transitions, 101 flow, removed 3 selfloop flow, removed 1 redundant places. [2020-10-16 05:12:47,970 INFO L241 Difference]: Finished difference. Result has 31 places, 22 transitions, 81 flow [2020-10-16 05:12:47,970 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=55, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=81, PETRI_PLACES=31, PETRI_TRANSITIONS=22} [2020-10-16 05:12:47,971 INFO L342 CegarLoopForPetriNet]: 29 programPoint places, 2 predicate places. [2020-10-16 05:12:47,971 INFO L481 AbstractCegarLoop]: Abstraction has has 31 places, 22 transitions, 81 flow [2020-10-16 05:12:47,971 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 05:12:47,971 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:12:47,971 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:12:47,972 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 05:12:47,972 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:12:47,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:12:47,973 INFO L82 PathProgramCache]: Analyzing trace with hash -1496123826, now seen corresponding path program 1 times [2020-10-16 05:12:47,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:12:47,974 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682661057] [2020-10-16 05:12:47,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:12:47,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:12:48,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:12:48,054 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682661057] [2020-10-16 05:12:48,055 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:12:48,055 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:12:48,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422376051] [2020-10-16 05:12:48,056 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 05:12:48,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:12:48,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 05:12:48,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 05:12:48,057 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 139 [2020-10-16 05:12:48,058 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 22 transitions, 81 flow. Second operand 5 states. [2020-10-16 05:12:48,058 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:12:48,058 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 139 [2020-10-16 05:12:48,058 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:12:48,160 INFO L129 PetriNetUnfolder]: 136/271 cut-off events. [2020-10-16 05:12:48,160 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2020-10-16 05:12:48,161 INFO L80 FinitePrefix]: Finished finitePrefix Result has 691 conditions, 271 events. 136/271 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1144 event pairs, 34 based on Foata normal form. 9/258 useless extension candidates. Maximal degree in co-relation 678. Up to 124 conditions per place. [2020-10-16 05:12:48,164 INFO L132 encePairwiseOnDemand]: 133/139 looper letters, 24 selfloop transitions, 10 changer transitions 0/43 dead transitions. [2020-10-16 05:12:48,164 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 43 transitions, 209 flow [2020-10-16 05:12:48,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 05:12:48,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 05:12:48,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 605 transitions. [2020-10-16 05:12:48,167 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7254196642685852 [2020-10-16 05:12:48,167 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 605 transitions. [2020-10-16 05:12:48,167 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 605 transitions. [2020-10-16 05:12:48,168 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:12:48,168 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 605 transitions. [2020-10-16 05:12:48,185 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 05:12:48,187 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 05:12:48,187 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 05:12:48,187 INFO L185 Difference]: Start difference. First operand has 31 places, 22 transitions, 81 flow. Second operand 6 states and 605 transitions. [2020-10-16 05:12:48,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 43 transitions, 209 flow [2020-10-16 05:12:48,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 43 transitions, 203 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 05:12:48,189 INFO L241 Difference]: Finished difference. Result has 38 places, 28 transitions, 142 flow [2020-10-16 05:12:48,190 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=142, PETRI_PLACES=38, PETRI_TRANSITIONS=28} [2020-10-16 05:12:48,190 INFO L342 CegarLoopForPetriNet]: 29 programPoint places, 9 predicate places. [2020-10-16 05:12:48,190 INFO L481 AbstractCegarLoop]: Abstraction has has 38 places, 28 transitions, 142 flow [2020-10-16 05:12:48,190 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 05:12:48,190 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:12:48,191 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:12:48,191 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-16 05:12:48,191 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:12:48,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:12:48,191 INFO L82 PathProgramCache]: Analyzing trace with hash 407975478, now seen corresponding path program 1 times [2020-10-16 05:12:48,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:12:48,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234201143] [2020-10-16 05:12:48,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:12:48,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:12:48,226 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 05:12:48,226 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234201143] [2020-10-16 05:12:48,226 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:12:48,226 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:12:48,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595870226] [2020-10-16 05:12:48,227 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 05:12:48,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:12:48,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 05:12:48,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 05:12:48,229 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 139 [2020-10-16 05:12:48,229 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 28 transitions, 142 flow. Second operand 5 states. [2020-10-16 05:12:48,229 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:12:48,230 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 139 [2020-10-16 05:12:48,230 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:12:48,359 INFO L129 PetriNetUnfolder]: 159/369 cut-off events. [2020-10-16 05:12:48,360 INFO L130 PetriNetUnfolder]: For 296/296 co-relation queries the response was YES. [2020-10-16 05:12:48,361 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1169 conditions, 369 events. 159/369 cut-off events. For 296/296 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 1968 event pairs, 46 based on Foata normal form. 13/352 useless extension candidates. Maximal degree in co-relation 1152. Up to 166 conditions per place. [2020-10-16 05:12:48,364 INFO L132 encePairwiseOnDemand]: 133/139 looper letters, 30 selfloop transitions, 15 changer transitions 0/54 dead transitions. [2020-10-16 05:12:48,365 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 54 transitions, 359 flow [2020-10-16 05:12:48,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 05:12:48,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 05:12:48,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 600 transitions. [2020-10-16 05:12:48,367 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7194244604316546 [2020-10-16 05:12:48,367 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 600 transitions. [2020-10-16 05:12:48,368 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 600 transitions. [2020-10-16 05:12:48,368 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:12:48,368 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 600 transitions. [2020-10-16 05:12:48,370 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 05:12:48,371 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 05:12:48,372 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 05:12:48,372 INFO L185 Difference]: Start difference. First operand has 38 places, 28 transitions, 142 flow. Second operand 6 states and 600 transitions. [2020-10-16 05:12:48,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 54 transitions, 359 flow [2020-10-16 05:12:48,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 54 transitions, 338 flow, removed 4 selfloop flow, removed 2 redundant places. [2020-10-16 05:12:48,376 INFO L241 Difference]: Finished difference. Result has 44 places, 37 transitions, 244 flow [2020-10-16 05:12:48,376 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=244, PETRI_PLACES=44, PETRI_TRANSITIONS=37} [2020-10-16 05:12:48,377 INFO L342 CegarLoopForPetriNet]: 29 programPoint places, 15 predicate places. [2020-10-16 05:12:48,377 INFO L481 AbstractCegarLoop]: Abstraction has has 44 places, 37 transitions, 244 flow [2020-10-16 05:12:48,377 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 05:12:48,377 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:12:48,377 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:12:48,377 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-16 05:12:48,378 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:12:48,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:12:48,378 INFO L82 PathProgramCache]: Analyzing trace with hash -689102574, now seen corresponding path program 1 times [2020-10-16 05:12:48,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:12:48,378 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723887034] [2020-10-16 05:12:48,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:12:48,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:12:48,427 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:12:48,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723887034] [2020-10-16 05:12:48,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [743456746] [2020-10-16 05:12:48,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 05:12:48,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:12:48,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-16 05:12:48,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 05:12:48,537 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:12:48,538 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 05:12:48,538 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-10-16 05:12:48,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550367220] [2020-10-16 05:12:48,539 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 05:12:48,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:12:48,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 05:12:48,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-16 05:12:48,541 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 139 [2020-10-16 05:12:48,541 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 37 transitions, 244 flow. Second operand 9 states. [2020-10-16 05:12:48,541 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:12:48,542 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 139 [2020-10-16 05:12:48,542 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:12:48,759 INFO L129 PetriNetUnfolder]: 158/379 cut-off events. [2020-10-16 05:12:48,760 INFO L130 PetriNetUnfolder]: For 646/646 co-relation queries the response was YES. [2020-10-16 05:12:48,762 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1429 conditions, 379 events. 158/379 cut-off events. For 646/646 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2067 event pairs, 30 based on Foata normal form. 3/357 useless extension candidates. Maximal degree in co-relation 1409. Up to 146 conditions per place. [2020-10-16 05:12:48,765 INFO L132 encePairwiseOnDemand]: 132/139 looper letters, 39 selfloop transitions, 29 changer transitions 0/76 dead transitions. [2020-10-16 05:12:48,765 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 76 transitions, 558 flow [2020-10-16 05:12:48,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 05:12:48,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 05:12:48,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1262 transitions. [2020-10-16 05:12:48,771 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6983951300498064 [2020-10-16 05:12:48,771 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1262 transitions. [2020-10-16 05:12:48,771 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1262 transitions. [2020-10-16 05:12:48,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:12:48,772 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1262 transitions. [2020-10-16 05:12:48,775 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 05:12:48,778 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 05:12:48,779 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 05:12:48,779 INFO L185 Difference]: Start difference. First operand has 44 places, 37 transitions, 244 flow. Second operand 13 states and 1262 transitions. [2020-10-16 05:12:48,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 76 transitions, 558 flow [2020-10-16 05:12:48,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 76 transitions, 542 flow, removed 6 selfloop flow, removed 1 redundant places. [2020-10-16 05:12:48,786 INFO L241 Difference]: Finished difference. Result has 58 places, 47 transitions, 388 flow [2020-10-16 05:12:48,786 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=388, PETRI_PLACES=58, PETRI_TRANSITIONS=47} [2020-10-16 05:12:48,786 INFO L342 CegarLoopForPetriNet]: 29 programPoint places, 29 predicate places. [2020-10-16 05:12:48,786 INFO L481 AbstractCegarLoop]: Abstraction has has 58 places, 47 transitions, 388 flow [2020-10-16 05:12:48,787 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 05:12:48,787 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:12:48,787 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:12:49,000 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-10-16 05:12:49,001 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:12:49,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:12:49,002 INFO L82 PathProgramCache]: Analyzing trace with hash 1222415634, now seen corresponding path program 2 times [2020-10-16 05:12:49,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:12:49,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594318252] [2020-10-16 05:12:49,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:12:49,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:12:49,065 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 05:12:49,065 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594318252] [2020-10-16 05:12:49,066 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:12:49,066 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 05:12:49,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030206956] [2020-10-16 05:12:49,066 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 05:12:49,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:12:49,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 05:12:49,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 05:12:49,068 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 139 [2020-10-16 05:12:49,068 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 47 transitions, 388 flow. Second operand 7 states. [2020-10-16 05:12:49,068 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:12:49,068 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 139 [2020-10-16 05:12:49,069 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:12:49,308 INFO L129 PetriNetUnfolder]: 156/387 cut-off events. [2020-10-16 05:12:49,308 INFO L130 PetriNetUnfolder]: For 1045/1045 co-relation queries the response was YES. [2020-10-16 05:12:49,310 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1661 conditions, 387 events. 156/387 cut-off events. For 1045/1045 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2175 event pairs, 33 based on Foata normal form. 3/367 useless extension candidates. Maximal degree in co-relation 1637. Up to 126 conditions per place. [2020-10-16 05:12:49,314 INFO L132 encePairwiseOnDemand]: 132/139 looper letters, 40 selfloop transitions, 32 changer transitions 0/80 dead transitions. [2020-10-16 05:12:49,314 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 80 transitions, 681 flow [2020-10-16 05:12:49,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 05:12:49,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 05:12:49,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1262 transitions. [2020-10-16 05:12:49,319 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6983951300498064 [2020-10-16 05:12:49,320 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1262 transitions. [2020-10-16 05:12:49,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1262 transitions. [2020-10-16 05:12:49,321 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:12:49,321 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1262 transitions. [2020-10-16 05:12:49,324 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 05:12:49,327 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 05:12:49,328 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 05:12:49,328 INFO L185 Difference]: Start difference. First operand has 58 places, 47 transitions, 388 flow. Second operand 13 states and 1262 transitions. [2020-10-16 05:12:49,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 80 transitions, 681 flow [2020-10-16 05:12:49,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 80 transitions, 618 flow, removed 6 selfloop flow, removed 7 redundant places. [2020-10-16 05:12:49,338 INFO L241 Difference]: Finished difference. Result has 66 places, 52 transitions, 455 flow [2020-10-16 05:12:49,338 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=455, PETRI_PLACES=66, PETRI_TRANSITIONS=52} [2020-10-16 05:12:49,338 INFO L342 CegarLoopForPetriNet]: 29 programPoint places, 37 predicate places. [2020-10-16 05:12:49,339 INFO L481 AbstractCegarLoop]: Abstraction has has 66 places, 52 transitions, 455 flow [2020-10-16 05:12:49,339 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 05:12:49,339 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:12:49,339 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:12:49,339 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-16 05:12:49,339 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:12:49,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:12:49,340 INFO L82 PathProgramCache]: Analyzing trace with hash 38946908, now seen corresponding path program 1 times [2020-10-16 05:12:49,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:12:49,340 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200275570] [2020-10-16 05:12:49,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:12:49,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:12:49,374 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 05:12:49,374 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200275570] [2020-10-16 05:12:49,375 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:12:49,375 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:12:49,375 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765805022] [2020-10-16 05:12:49,375 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 05:12:49,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:12:49,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 05:12:49,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 05:12:49,377 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 139 [2020-10-16 05:12:49,378 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 52 transitions, 455 flow. Second operand 5 states. [2020-10-16 05:12:49,378 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:12:49,378 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 139 [2020-10-16 05:12:49,378 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:12:49,534 INFO L129 PetriNetUnfolder]: 193/509 cut-off events. [2020-10-16 05:12:49,534 INFO L130 PetriNetUnfolder]: For 1975/2003 co-relation queries the response was YES. [2020-10-16 05:12:49,537 INFO L80 FinitePrefix]: Finished finitePrefix Result has 2234 conditions, 509 events. 193/509 cut-off events. For 1975/2003 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 3298 event pairs, 44 based on Foata normal form. 25/507 useless extension candidates. Maximal degree in co-relation 2208. Up to 197 conditions per place. [2020-10-16 05:12:49,542 INFO L132 encePairwiseOnDemand]: 133/139 looper letters, 56 selfloop transitions, 30 changer transitions 0/95 dead transitions. [2020-10-16 05:12:49,542 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 95 transitions, 1023 flow [2020-10-16 05:12:49,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 05:12:49,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 05:12:49,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 606 transitions. [2020-10-16 05:12:49,546 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7266187050359713 [2020-10-16 05:12:49,546 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 606 transitions. [2020-10-16 05:12:49,546 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 606 transitions. [2020-10-16 05:12:49,547 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:12:49,547 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 606 transitions. [2020-10-16 05:12:49,549 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 05:12:49,551 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 05:12:49,551 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 05:12:49,551 INFO L185 Difference]: Start difference. First operand has 66 places, 52 transitions, 455 flow. Second operand 6 states and 606 transitions. [2020-10-16 05:12:49,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 95 transitions, 1023 flow [2020-10-16 05:12:49,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 95 transitions, 910 flow, removed 10 selfloop flow, removed 9 redundant places. [2020-10-16 05:12:49,573 INFO L241 Difference]: Finished difference. Result has 65 places, 73 transitions, 739 flow [2020-10-16 05:12:49,573 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=391, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=739, PETRI_PLACES=65, PETRI_TRANSITIONS=73} [2020-10-16 05:12:49,573 INFO L342 CegarLoopForPetriNet]: 29 programPoint places, 36 predicate places. [2020-10-16 05:12:49,573 INFO L481 AbstractCegarLoop]: Abstraction has has 65 places, 73 transitions, 739 flow [2020-10-16 05:12:49,573 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 05:12:49,574 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:12:49,574 INFO L255 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:12:49,574 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-16 05:12:49,574 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:12:49,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:12:49,574 INFO L82 PathProgramCache]: Analyzing trace with hash 1203907673, now seen corresponding path program 1 times [2020-10-16 05:12:49,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:12:49,575 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529012061] [2020-10-16 05:12:49,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:12:49,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 05:12:49,596 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 05:12:49,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 05:12:49,611 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 05:12:49,623 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 05:12:49,624 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 05:12:49,624 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-16 05:12:49,624 WARN L371 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-16 05:12:49,625 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2020-10-16 05:12:49,639 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,639 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,639 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,640 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,640 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,640 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,640 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,641 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,641 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,641 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,641 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,641 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,642 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,642 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,642 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,642 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,642 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,642 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,643 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,643 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,643 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,643 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,643 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,643 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,643 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,643 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,644 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,644 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,644 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,645 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,645 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,645 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,645 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,645 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,645 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,645 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,646 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,646 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,646 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,646 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,646 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,647 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,647 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,647 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,647 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,647 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,647 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,647 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,648 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,648 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,648 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,648 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,648 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,648 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,648 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,649 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,649 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,649 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,649 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,649 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,650 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,650 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,650 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,650 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,650 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,650 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,650 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,650 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,651 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,651 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,651 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,651 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,651 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,651 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,652 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,652 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,652 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,652 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,652 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,652 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,652 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,652 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,653 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,653 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,653 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,653 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,653 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,654 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,654 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,659 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,660 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,660 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,660 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,660 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,661 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,661 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,662 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,662 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,662 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,663 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,663 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,664 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,664 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,664 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,666 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,666 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,666 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,666 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,666 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,667 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,668 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,668 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,668 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,668 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,669 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,669 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,670 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,670 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,670 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,670 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,671 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,671 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,672 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,673 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,673 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,673 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,673 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,673 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:12:49,677 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-10-16 05:12:49,677 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 05:12:49,677 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 05:12:49,677 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 05:12:49,678 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 05:12:49,678 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 05:12:49,678 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 05:12:49,678 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 05:12:49,678 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 05:12:49,680 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 118 places, 105 transitions, 274 flow [2020-10-16 05:12:49,691 INFO L129 PetriNetUnfolder]: 6/127 cut-off events. [2020-10-16 05:12:49,691 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-10-16 05:12:49,692 INFO L80 FinitePrefix]: Finished finitePrefix Result has 156 conditions, 127 events. 6/127 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 212 event pairs, 0 based on Foata normal form. 0/115 useless extension candidates. Maximal degree in co-relation 147. Up to 10 conditions per place. [2020-10-16 05:12:49,692 INFO L82 GeneralOperation]: Start removeDead. Operand has 118 places, 105 transitions, 274 flow [2020-10-16 05:12:49,693 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 81 places, 71 transitions, 177 flow [2020-10-16 05:12:49,693 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 05:12:49,693 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 81 places, 71 transitions, 177 flow [2020-10-16 05:12:49,693 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 81 places, 71 transitions, 177 flow [2020-10-16 05:12:49,694 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 81 places, 71 transitions, 177 flow [2020-10-16 05:12:49,704 INFO L129 PetriNetUnfolder]: 6/127 cut-off events. [2020-10-16 05:12:49,704 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-10-16 05:12:49,705 INFO L80 FinitePrefix]: Finished finitePrefix Result has 153 conditions, 127 events. 6/127 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 225 event pairs, 0 based on Foata normal form. 0/115 useless extension candidates. Maximal degree in co-relation 130. Up to 10 conditions per place. [2020-10-16 05:12:49,709 INFO L117 LiptonReduction]: Number of co-enabled transitions 2192 [2020-10-16 05:12:50,578 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-10-16 05:12:50,663 INFO L132 LiptonReduction]: Checked pairs total: 2992 [2020-10-16 05:12:50,663 INFO L134 LiptonReduction]: Total number of compositions: 55 [2020-10-16 05:12:50,663 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 970 [2020-10-16 05:12:50,664 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2020-10-16 05:12:50,664 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:12:50,664 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:12:50,664 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2020-10-16 05:12:50,665 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 05:12:50,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:12:50,665 INFO L82 PathProgramCache]: Analyzing trace with hash 673501, now seen corresponding path program 1 times [2020-10-16 05:12:50,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:12:50,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019684899] [2020-10-16 05:12:50,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:12:50,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:12:50,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:12:50,689 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019684899] [2020-10-16 05:12:50,689 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:12:50,689 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 05:12:50,690 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856323330] [2020-10-16 05:12:50,690 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 05:12:50,690 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:12:50,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 05:12:50,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 05:12:50,692 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 160 [2020-10-16 05:12:50,695 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 22 transitions, 79 flow. Second operand 3 states. [2020-10-16 05:12:50,695 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:12:50,695 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 160 [2020-10-16 05:12:50,696 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:12:50,804 INFO L129 PetriNetUnfolder]: 504/756 cut-off events. [2020-10-16 05:12:50,804 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-10-16 05:12:50,807 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1514 conditions, 756 events. 504/756 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3091 event pairs, 233 based on Foata normal form. 0/624 useless extension candidates. Maximal degree in co-relation 1502. Up to 651 conditions per place. [2020-10-16 05:12:50,842 INFO L132 encePairwiseOnDemand]: 154/160 looper letters, 15 selfloop transitions, 5 changer transitions 0/31 dead transitions. [2020-10-16 05:12:50,843 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 31 transitions, 137 flow [2020-10-16 05:12:50,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 05:12:50,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 05:12:50,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 354 transitions. [2020-10-16 05:12:50,845 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7375 [2020-10-16 05:12:50,845 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 354 transitions. [2020-10-16 05:12:50,845 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 354 transitions. [2020-10-16 05:12:50,845 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:12:50,846 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 354 transitions. [2020-10-16 05:12:50,847 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 05:12:50,848 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 05:12:50,848 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 05:12:50,848 INFO L185 Difference]: Start difference. First operand has 34 places, 22 transitions, 79 flow. Second operand 3 states and 354 transitions. [2020-10-16 05:12:50,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 31 transitions, 137 flow [2020-10-16 05:12:50,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 31 transitions, 124 flow, removed 6 selfloop flow, removed 1 redundant places. [2020-10-16 05:12:50,850 INFO L241 Difference]: Finished difference. Result has 36 places, 26 transitions, 99 flow [2020-10-16 05:12:50,850 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=99, PETRI_PLACES=36, PETRI_TRANSITIONS=26} [2020-10-16 05:12:50,850 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 2 predicate places. [2020-10-16 05:12:50,850 INFO L481 AbstractCegarLoop]: Abstraction has has 36 places, 26 transitions, 99 flow [2020-10-16 05:12:50,850 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 05:12:50,851 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:12:50,851 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:12:50,851 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-16 05:12:50,851 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 05:12:50,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:12:50,852 INFO L82 PathProgramCache]: Analyzing trace with hash 979170514, now seen corresponding path program 1 times [2020-10-16 05:12:50,852 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:12:50,852 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120401872] [2020-10-16 05:12:50,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:12:50,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:12:50,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:12:50,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120401872] [2020-10-16 05:12:50,878 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:12:50,878 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:12:50,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406450421] [2020-10-16 05:12:50,878 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 05:12:50,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:12:50,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 05:12:50,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 05:12:50,880 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 160 [2020-10-16 05:12:50,880 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 26 transitions, 99 flow. Second operand 5 states. [2020-10-16 05:12:50,880 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:12:50,881 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 160 [2020-10-16 05:12:50,881 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:12:51,038 INFO L129 PetriNetUnfolder]: 732/1148 cut-off events. [2020-10-16 05:12:51,039 INFO L130 PetriNetUnfolder]: For 90/90 co-relation queries the response was YES. [2020-10-16 05:12:51,043 INFO L80 FinitePrefix]: Finished finitePrefix Result has 2928 conditions, 1148 events. 732/1148 cut-off events. For 90/90 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 5685 event pairs, 134 based on Foata normal form. 27/1106 useless extension candidates. Maximal degree in co-relation 2914. Up to 568 conditions per place. [2020-10-16 05:12:51,053 INFO L132 encePairwiseOnDemand]: 153/160 looper letters, 31 selfloop transitions, 13 changer transitions 0/54 dead transitions. [2020-10-16 05:12:51,053 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 54 transitions, 268 flow [2020-10-16 05:12:51,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 05:12:51,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 05:12:51,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 693 transitions. [2020-10-16 05:12:51,057 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.721875 [2020-10-16 05:12:51,057 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 693 transitions. [2020-10-16 05:12:51,057 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 693 transitions. [2020-10-16 05:12:51,058 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:12:51,058 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 693 transitions. [2020-10-16 05:12:51,059 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 05:12:51,061 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 05:12:51,061 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 05:12:51,061 INFO L185 Difference]: Start difference. First operand has 36 places, 26 transitions, 99 flow. Second operand 6 states and 693 transitions. [2020-10-16 05:12:51,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 54 transitions, 268 flow [2020-10-16 05:12:51,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 54 transitions, 260 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 05:12:51,064 INFO L241 Difference]: Finished difference. Result has 43 places, 34 transitions, 179 flow [2020-10-16 05:12:51,065 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=94, 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=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=179, PETRI_PLACES=43, PETRI_TRANSITIONS=34} [2020-10-16 05:12:51,065 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 9 predicate places. [2020-10-16 05:12:51,065 INFO L481 AbstractCegarLoop]: Abstraction has has 43 places, 34 transitions, 179 flow [2020-10-16 05:12:51,065 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 05:12:51,065 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:12:51,065 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:12:51,066 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-16 05:12:51,066 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 05:12:51,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:12:51,066 INFO L82 PathProgramCache]: Analyzing trace with hash 963155286, now seen corresponding path program 1 times [2020-10-16 05:12:51,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:12:51,067 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951842164] [2020-10-16 05:12:51,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:12:51,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:12:51,093 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 05:12:51,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951842164] [2020-10-16 05:12:51,094 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:12:51,094 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:12:51,094 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404337759] [2020-10-16 05:12:51,094 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 05:12:51,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:12:51,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 05:12:51,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 05:12:51,096 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 160 [2020-10-16 05:12:51,097 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 34 transitions, 179 flow. Second operand 5 states. [2020-10-16 05:12:51,097 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:12:51,097 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 160 [2020-10-16 05:12:51,097 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:12:51,337 INFO L129 PetriNetUnfolder]: 1039/1744 cut-off events. [2020-10-16 05:12:51,337 INFO L130 PetriNetUnfolder]: For 1188/1188 co-relation queries the response was YES. [2020-10-16 05:12:51,346 INFO L80 FinitePrefix]: Finished finitePrefix Result has 5632 conditions, 1744 events. 1039/1744 cut-off events. For 1188/1188 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 10196 event pairs, 319 based on Foata normal form. 41/1697 useless extension candidates. Maximal degree in co-relation 5614. Up to 890 conditions per place. [2020-10-16 05:12:51,363 INFO L132 encePairwiseOnDemand]: 153/160 looper letters, 39 selfloop transitions, 20 changer transitions 0/69 dead transitions. [2020-10-16 05:12:51,364 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 69 transitions, 466 flow [2020-10-16 05:12:51,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 05:12:51,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 05:12:51,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 694 transitions. [2020-10-16 05:12:51,367 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7229166666666667 [2020-10-16 05:12:51,367 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 694 transitions. [2020-10-16 05:12:51,367 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 694 transitions. [2020-10-16 05:12:51,368 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:12:51,368 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 694 transitions. [2020-10-16 05:12:51,369 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 05:12:51,371 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 05:12:51,372 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 05:12:51,372 INFO L185 Difference]: Start difference. First operand has 43 places, 34 transitions, 179 flow. Second operand 6 states and 694 transitions. [2020-10-16 05:12:51,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 69 transitions, 466 flow [2020-10-16 05:12:51,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 69 transitions, 435 flow, removed 6 selfloop flow, removed 2 redundant places. [2020-10-16 05:12:51,379 INFO L241 Difference]: Finished difference. Result has 49 places, 46 transitions, 311 flow [2020-10-16 05:12:51,379 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=311, PETRI_PLACES=49, PETRI_TRANSITIONS=46} [2020-10-16 05:12:51,380 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 15 predicate places. [2020-10-16 05:12:51,380 INFO L481 AbstractCegarLoop]: Abstraction has has 49 places, 46 transitions, 311 flow [2020-10-16 05:12:51,380 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 05:12:51,380 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:12:51,380 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:12:51,380 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-16 05:12:51,381 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 05:12:51,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:12:51,381 INFO L82 PathProgramCache]: Analyzing trace with hash -1828752198, now seen corresponding path program 1 times [2020-10-16 05:12:51,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:12:51,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894007330] [2020-10-16 05:12:51,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:12:51,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:12:51,421 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:12:51,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894007330] [2020-10-16 05:12:51,422 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [344235031] [2020-10-16 05:12:51,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 05:12:51,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:12:51,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-16 05:12:51,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 05:12:51,505 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:12:51,505 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 05:12:51,505 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2020-10-16 05:12:51,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242710731] [2020-10-16 05:12:51,506 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 05:12:51,506 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:12:51,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 05:12:51,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 05:12:51,508 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 160 [2020-10-16 05:12:51,508 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 46 transitions, 311 flow. Second operand 7 states. [2020-10-16 05:12:51,508 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:12:51,509 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 160 [2020-10-16 05:12:51,509 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:12:51,915 INFO L129 PetriNetUnfolder]: 1080/1842 cut-off events. [2020-10-16 05:12:51,916 INFO L130 PetriNetUnfolder]: For 3046/3046 co-relation queries the response was YES. [2020-10-16 05:12:51,926 INFO L80 FinitePrefix]: Finished finitePrefix Result has 7053 conditions, 1842 events. 1080/1842 cut-off events. For 3046/3046 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 11055 event pairs, 235 based on Foata normal form. 9/1775 useless extension candidates. Maximal degree in co-relation 7032. Up to 817 conditions per place. [2020-10-16 05:12:51,946 INFO L132 encePairwiseOnDemand]: 152/160 looper letters, 61 selfloop transitions, 38 changer transitions 0/108 dead transitions. [2020-10-16 05:12:51,947 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 108 transitions, 787 flow [2020-10-16 05:12:51,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 05:12:51,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 05:12:51,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1461 transitions. [2020-10-16 05:12:51,952 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7024038461538461 [2020-10-16 05:12:51,952 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1461 transitions. [2020-10-16 05:12:51,952 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1461 transitions. [2020-10-16 05:12:51,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:12:51,953 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1461 transitions. [2020-10-16 05:12:51,957 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 05:12:51,961 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 05:12:51,962 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 05:12:51,962 INFO L185 Difference]: Start difference. First operand has 49 places, 46 transitions, 311 flow. Second operand 13 states and 1461 transitions. [2020-10-16 05:12:51,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 108 transitions, 787 flow [2020-10-16 05:12:51,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 108 transitions, 761 flow, removed 10 selfloop flow, removed 1 redundant places. [2020-10-16 05:12:51,981 INFO L241 Difference]: Finished difference. Result has 63 places, 59 transitions, 496 flow [2020-10-16 05:12:51,981 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=496, PETRI_PLACES=63, PETRI_TRANSITIONS=59} [2020-10-16 05:12:51,981 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 29 predicate places. [2020-10-16 05:12:51,982 INFO L481 AbstractCegarLoop]: Abstraction has has 63 places, 59 transitions, 496 flow [2020-10-16 05:12:51,982 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 05:12:51,982 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:12:51,982 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:12:52,195 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-10-16 05:12:52,196 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 05:12:52,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:12:52,196 INFO L82 PathProgramCache]: Analyzing trace with hash -2120698438, now seen corresponding path program 2 times [2020-10-16 05:12:52,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:12:52,197 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418142582] [2020-10-16 05:12:52,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:12:52,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:12:52,239 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 05:12:52,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418142582] [2020-10-16 05:12:52,239 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:12:52,239 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 05:12:52,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191017636] [2020-10-16 05:12:52,240 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 05:12:52,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:12:52,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 05:12:52,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 05:12:52,242 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 160 [2020-10-16 05:12:52,242 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 59 transitions, 496 flow. Second operand 7 states. [2020-10-16 05:12:52,242 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:12:52,242 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 160 [2020-10-16 05:12:52,243 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:12:52,630 INFO L129 PetriNetUnfolder]: 1120/1938 cut-off events. [2020-10-16 05:12:52,630 INFO L130 PetriNetUnfolder]: For 5488/5488 co-relation queries the response was YES. [2020-10-16 05:12:52,645 INFO L80 FinitePrefix]: Finished finitePrefix Result has 8462 conditions, 1938 events. 1120/1938 cut-off events. For 5488/5488 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 12001 event pairs, 242 based on Foata normal form. 9/1877 useless extension candidates. Maximal degree in co-relation 8437. Up to 744 conditions per place. [2020-10-16 05:12:52,679 INFO L132 encePairwiseOnDemand]: 152/160 looper letters, 64 selfloop transitions, 43 changer transitions 0/116 dead transitions. [2020-10-16 05:12:52,679 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 116 transitions, 984 flow [2020-10-16 05:12:52,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 05:12:52,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 05:12:52,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1461 transitions. [2020-10-16 05:12:52,689 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7024038461538461 [2020-10-16 05:12:52,689 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1461 transitions. [2020-10-16 05:12:52,689 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1461 transitions. [2020-10-16 05:12:52,691 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:12:52,691 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1461 transitions. [2020-10-16 05:12:52,696 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 05:12:52,701 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 05:12:52,701 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 05:12:52,701 INFO L185 Difference]: Start difference. First operand has 63 places, 59 transitions, 496 flow. Second operand 13 states and 1461 transitions. [2020-10-16 05:12:52,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 116 transitions, 984 flow [2020-10-16 05:12:52,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 116 transitions, 900 flow, removed 8 selfloop flow, removed 7 redundant places. [2020-10-16 05:12:52,741 INFO L241 Difference]: Finished difference. Result has 71 places, 68 transitions, 613 flow [2020-10-16 05:12:52,742 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=418, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=613, PETRI_PLACES=71, PETRI_TRANSITIONS=68} [2020-10-16 05:12:52,742 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 37 predicate places. [2020-10-16 05:12:52,742 INFO L481 AbstractCegarLoop]: Abstraction has has 71 places, 68 transitions, 613 flow [2020-10-16 05:12:52,742 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 05:12:52,742 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:12:52,743 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:12:52,743 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-16 05:12:52,743 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 05:12:52,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:12:52,743 INFO L82 PathProgramCache]: Analyzing trace with hash -1204137406, now seen corresponding path program 1 times [2020-10-16 05:12:52,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:12:52,744 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844524510] [2020-10-16 05:12:52,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:12:52,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:12:52,785 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 05:12:52,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844524510] [2020-10-16 05:12:52,786 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:12:52,786 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:12:52,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578858454] [2020-10-16 05:12:52,787 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 05:12:52,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:12:52,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 05:12:52,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 05:12:52,788 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 160 [2020-10-16 05:12:52,788 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 68 transitions, 613 flow. Second operand 5 states. [2020-10-16 05:12:52,789 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:12:52,789 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 160 [2020-10-16 05:12:52,789 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:12:53,184 INFO L129 PetriNetUnfolder]: 1531/2853 cut-off events. [2020-10-16 05:12:53,184 INFO L130 PetriNetUnfolder]: For 11084/11112 co-relation queries the response was YES. [2020-10-16 05:12:53,205 INFO L80 FinitePrefix]: Finished finitePrefix Result has 13859 conditions, 2853 events. 1531/2853 cut-off events. For 11084/11112 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 20892 event pairs, 465 based on Foata normal form. 74/2805 useless extension candidates. Maximal degree in co-relation 13832. Up to 1367 conditions per place. [2020-10-16 05:12:53,227 INFO L132 encePairwiseOnDemand]: 153/160 looper letters, 88 selfloop transitions, 40 changer transitions 0/138 dead transitions. [2020-10-16 05:12:53,228 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 138 transitions, 1538 flow [2020-10-16 05:12:53,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 05:12:53,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 05:12:53,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 700 transitions. [2020-10-16 05:12:53,230 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7291666666666666 [2020-10-16 05:12:53,230 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 700 transitions. [2020-10-16 05:12:53,230 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 700 transitions. [2020-10-16 05:12:53,230 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:12:53,231 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 700 transitions. [2020-10-16 05:12:53,232 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 05:12:53,233 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 05:12:53,233 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 05:12:53,234 INFO L185 Difference]: Start difference. First operand has 71 places, 68 transitions, 613 flow. Second operand 6 states and 700 transitions. [2020-10-16 05:12:53,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 138 transitions, 1538 flow [2020-10-16 05:12:53,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 138 transitions, 1365 flow, removed 16 selfloop flow, removed 9 redundant places. [2020-10-16 05:12:53,326 INFO L241 Difference]: Finished difference. Result has 70 places, 95 transitions, 962 flow [2020-10-16 05:12:53,326 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=524, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=962, PETRI_PLACES=70, PETRI_TRANSITIONS=95} [2020-10-16 05:12:53,326 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 36 predicate places. [2020-10-16 05:12:53,326 INFO L481 AbstractCegarLoop]: Abstraction has has 70 places, 95 transitions, 962 flow [2020-10-16 05:12:53,326 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 05:12:53,326 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:12:53,327 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:12:53,327 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-16 05:12:53,327 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 05:12:53,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:12:53,327 INFO L82 PathProgramCache]: Analyzing trace with hash -1563762778, now seen corresponding path program 1 times [2020-10-16 05:12:53,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:12:53,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432082541] [2020-10-16 05:12:53,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:12:53,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:12:53,377 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-16 05:12:53,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432082541] [2020-10-16 05:12:53,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12821967] [2020-10-16 05:12:53,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 05:12:53,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:12:53,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-16 05:12:53,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 05:12:53,474 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-16 05:12:53,475 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 05:12:53,475 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2020-10-16 05:12:53,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123907469] [2020-10-16 05:12:53,475 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 05:12:53,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:12:53,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 05:12:53,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 05:12:53,477 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 160 [2020-10-16 05:12:53,478 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 95 transitions, 962 flow. Second operand 7 states. [2020-10-16 05:12:53,478 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:12:53,478 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 160 [2020-10-16 05:12:53,479 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:12:54,125 INFO L129 PetriNetUnfolder]: 1583/2947 cut-off events. [2020-10-16 05:12:54,125 INFO L130 PetriNetUnfolder]: For 14398/14432 co-relation queries the response was YES. [2020-10-16 05:12:54,145 INFO L80 FinitePrefix]: Finished finitePrefix Result has 15599 conditions, 2947 events. 1583/2947 cut-off events. For 14398/14432 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 21901 event pairs, 348 based on Foata normal form. 28/2904 useless extension candidates. Maximal degree in co-relation 15569. Up to 1118 conditions per place. [2020-10-16 05:12:54,168 INFO L132 encePairwiseOnDemand]: 152/160 looper letters, 92 selfloop transitions, 80 changer transitions 0/181 dead transitions. [2020-10-16 05:12:54,168 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 181 transitions, 1998 flow [2020-10-16 05:12:54,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 05:12:54,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 05:12:54,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1476 transitions. [2020-10-16 05:12:54,171 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7096153846153846 [2020-10-16 05:12:54,172 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1476 transitions. [2020-10-16 05:12:54,172 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1476 transitions. [2020-10-16 05:12:54,172 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:12:54,172 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1476 transitions. [2020-10-16 05:12:54,174 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 05:12:54,177 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 05:12:54,178 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 05:12:54,178 INFO L185 Difference]: Start difference. First operand has 70 places, 95 transitions, 962 flow. Second operand 13 states and 1476 transitions. [2020-10-16 05:12:54,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 181 transitions, 1998 flow [2020-10-16 05:12:54,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 181 transitions, 1933 flow, removed 28 selfloop flow, removed 1 redundant places. [2020-10-16 05:12:54,338 INFO L241 Difference]: Finished difference. Result has 84 places, 121 transitions, 1430 flow [2020-10-16 05:12:54,339 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=911, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1430, PETRI_PLACES=84, PETRI_TRANSITIONS=121} [2020-10-16 05:12:54,339 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 50 predicate places. [2020-10-16 05:12:54,339 INFO L481 AbstractCegarLoop]: Abstraction has has 84 places, 121 transitions, 1430 flow [2020-10-16 05:12:54,339 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 05:12:54,339 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:12:54,339 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:12:54,553 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 05:12:54,553 INFO L429 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 05:12:54,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:12:54,554 INFO L82 PathProgramCache]: Analyzing trace with hash 160040113, now seen corresponding path program 1 times [2020-10-16 05:12:54,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:12:54,554 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397358234] [2020-10-16 05:12:54,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:12:54,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:12:54,597 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 05:12:54,597 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397358234] [2020-10-16 05:12:54,597 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1643146398] [2020-10-16 05:12:54,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 05:12:54,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:12:54,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-16 05:12:54,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 05:12:54,683 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 05:12:54,684 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 05:12:54,684 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2020-10-16 05:12:54,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587740639] [2020-10-16 05:12:54,685 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 05:12:54,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:12:54,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 05:12:54,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 05:12:54,688 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 160 [2020-10-16 05:12:54,688 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 121 transitions, 1430 flow. Second operand 7 states. [2020-10-16 05:12:54,689 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:12:54,689 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 160 [2020-10-16 05:12:54,689 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:12:55,380 INFO L129 PetriNetUnfolder]: 1624/3077 cut-off events. [2020-10-16 05:12:55,381 INFO L130 PetriNetUnfolder]: For 20152/20152 co-relation queries the response was YES. [2020-10-16 05:12:55,403 INFO L80 FinitePrefix]: Finished finitePrefix Result has 17732 conditions, 3077 events. 1624/3077 cut-off events. For 20152/20152 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 23280 event pairs, 329 based on Foata normal form. 19/3021 useless extension candidates. Maximal degree in co-relation 17698. Up to 985 conditions per place. [2020-10-16 05:12:55,427 INFO L132 encePairwiseOnDemand]: 152/160 looper letters, 112 selfloop transitions, 91 changer transitions 0/212 dead transitions. [2020-10-16 05:12:55,427 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 212 transitions, 2659 flow [2020-10-16 05:12:55,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 05:12:55,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 05:12:55,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1477 transitions. [2020-10-16 05:12:55,430 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7100961538461539 [2020-10-16 05:12:55,430 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1477 transitions. [2020-10-16 05:12:55,431 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1477 transitions. [2020-10-16 05:12:55,431 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:12:55,431 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1477 transitions. [2020-10-16 05:12:55,433 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 05:12:55,436 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 05:12:55,436 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 05:12:55,437 INFO L185 Difference]: Start difference. First operand has 84 places, 121 transitions, 1430 flow. Second operand 13 states and 1477 transitions. [2020-10-16 05:12:55,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 212 transitions, 2659 flow [2020-10-16 05:12:55,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 212 transitions, 2574 flow, removed 26 selfloop flow, removed 3 redundant places. [2020-10-16 05:12:55,667 INFO L241 Difference]: Finished difference. Result has 96 places, 150 transitions, 1973 flow [2020-10-16 05:12:55,668 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=1365, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1973, PETRI_PLACES=96, PETRI_TRANSITIONS=150} [2020-10-16 05:12:55,668 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 62 predicate places. [2020-10-16 05:12:55,668 INFO L481 AbstractCegarLoop]: Abstraction has has 96 places, 150 transitions, 1973 flow [2020-10-16 05:12:55,668 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 05:12:55,668 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:12:55,668 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:12:55,881 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 05:12:55,881 INFO L429 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 05:12:55,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:12:55,882 INFO L82 PathProgramCache]: Analyzing trace with hash -1829836890, now seen corresponding path program 2 times [2020-10-16 05:12:55,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:12:55,882 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353336800] [2020-10-16 05:12:55,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:12:55,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:12:55,932 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 05:12:55,932 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353336800] [2020-10-16 05:12:55,933 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:12:55,933 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 05:12:55,933 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690272362] [2020-10-16 05:12:55,933 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 05:12:55,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:12:55,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 05:12:55,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 05:12:55,936 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 160 [2020-10-16 05:12:55,937 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 150 transitions, 1973 flow. Second operand 7 states. [2020-10-16 05:12:55,937 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:12:55,937 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 160 [2020-10-16 05:12:55,937 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:12:56,557 INFO L129 PetriNetUnfolder]: 1655/3150 cut-off events. [2020-10-16 05:12:56,558 INFO L130 PetriNetUnfolder]: For 26283/26317 co-relation queries the response was YES. [2020-10-16 05:12:56,571 INFO L80 FinitePrefix]: Finished finitePrefix Result has 19911 conditions, 3150 events. 1655/3150 cut-off events. For 26283/26317 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 24287 event pairs, 311 based on Foata normal form. 24/3122 useless extension candidates. Maximal degree in co-relation 19874. Up to 996 conditions per place. [2020-10-16 05:12:56,594 INFO L132 encePairwiseOnDemand]: 152/160 looper letters, 119 selfloop transitions, 100 changer transitions 0/228 dead transitions. [2020-10-16 05:12:56,594 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 228 transitions, 3123 flow [2020-10-16 05:12:56,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 05:12:56,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 05:12:56,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1476 transitions. [2020-10-16 05:12:56,597 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7096153846153846 [2020-10-16 05:12:56,597 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1476 transitions. [2020-10-16 05:12:56,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1476 transitions. [2020-10-16 05:12:56,598 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:12:56,598 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1476 transitions. [2020-10-16 05:12:56,600 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 05:12:56,602 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 05:12:56,602 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 05:12:56,602 INFO L185 Difference]: Start difference. First operand has 96 places, 150 transitions, 1973 flow. Second operand 13 states and 1476 transitions. [2020-10-16 05:12:56,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 228 transitions, 3123 flow [2020-10-16 05:12:56,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 228 transitions, 3059 flow, removed 30 selfloop flow, removed 1 redundant places. [2020-10-16 05:12:56,893 INFO L241 Difference]: Finished difference. Result has 110 places, 167 transitions, 2420 flow [2020-10-16 05:12:56,893 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=1927, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2420, PETRI_PLACES=110, PETRI_TRANSITIONS=167} [2020-10-16 05:12:56,893 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 76 predicate places. [2020-10-16 05:12:56,894 INFO L481 AbstractCegarLoop]: Abstraction has has 110 places, 167 transitions, 2420 flow [2020-10-16 05:12:56,894 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 05:12:56,894 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:12:56,894 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:12:56,894 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-16 05:12:56,894 INFO L429 AbstractCegarLoop]: === Iteration 10 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 05:12:56,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:12:56,895 INFO L82 PathProgramCache]: Analyzing trace with hash -1829828303, now seen corresponding path program 2 times [2020-10-16 05:12:56,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:12:56,895 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650138923] [2020-10-16 05:12:56,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:12:56,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:12:56,934 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 05:12:56,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650138923] [2020-10-16 05:12:56,935 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:12:56,935 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 05:12:56,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656679583] [2020-10-16 05:12:56,936 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 05:12:56,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:12:56,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 05:12:56,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 05:12:56,937 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 160 [2020-10-16 05:12:56,938 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 167 transitions, 2420 flow. Second operand 7 states. [2020-10-16 05:12:56,938 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:12:56,938 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 160 [2020-10-16 05:12:56,938 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:12:57,543 INFO L129 PetriNetUnfolder]: 1696/3350 cut-off events. [2020-10-16 05:12:57,544 INFO L130 PetriNetUnfolder]: For 35247/35247 co-relation queries the response was YES. [2020-10-16 05:12:57,565 INFO L80 FinitePrefix]: Finished finitePrefix Result has 22414 conditions, 3350 events. 1696/3350 cut-off events. For 35247/35247 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 26423 event pairs, 367 based on Foata normal form. 19/3255 useless extension candidates. Maximal degree in co-relation 22373. Up to 1018 conditions per place. [2020-10-16 05:12:57,586 INFO L132 encePairwiseOnDemand]: 152/160 looper letters, 125 selfloop transitions, 113 changer transitions 0/247 dead transitions. [2020-10-16 05:12:57,586 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 247 transitions, 3717 flow [2020-10-16 05:12:57,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 05:12:57,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 05:12:57,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1477 transitions. [2020-10-16 05:12:57,589 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7100961538461539 [2020-10-16 05:12:57,589 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1477 transitions. [2020-10-16 05:12:57,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1477 transitions. [2020-10-16 05:12:57,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:12:57,590 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1477 transitions. [2020-10-16 05:12:57,592 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 05:12:57,595 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 05:12:57,595 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 05:12:57,595 INFO L185 Difference]: Start difference. First operand has 110 places, 167 transitions, 2420 flow. Second operand 13 states and 1477 transitions. [2020-10-16 05:12:57,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 247 transitions, 3717 flow [2020-10-16 05:12:58,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 247 transitions, 3470 flow, removed 29 selfloop flow, removed 9 redundant places. [2020-10-16 05:12:58,040 INFO L241 Difference]: Finished difference. Result has 116 places, 189 transitions, 2838 flow [2020-10-16 05:12:58,040 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=2221, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2838, PETRI_PLACES=116, PETRI_TRANSITIONS=189} [2020-10-16 05:12:58,040 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 82 predicate places. [2020-10-16 05:12:58,040 INFO L481 AbstractCegarLoop]: Abstraction has has 116 places, 189 transitions, 2838 flow [2020-10-16 05:12:58,040 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 05:12:58,041 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:12:58,041 INFO L255 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:12:58,041 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-16 05:12:58,041 INFO L429 AbstractCegarLoop]: === Iteration 11 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 05:12:58,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:12:58,041 INFO L82 PathProgramCache]: Analyzing trace with hash -916888880, now seen corresponding path program 1 times [2020-10-16 05:12:58,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:12:58,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774541278] [2020-10-16 05:12:58,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:12:58,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:12:58,090 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 05:12:58,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774541278] [2020-10-16 05:12:58,090 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:12:58,091 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:12:58,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692024362] [2020-10-16 05:12:58,091 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 05:12:58,091 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:12:58,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 05:12:58,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 05:12:58,093 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 160 [2020-10-16 05:12:58,093 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 189 transitions, 2838 flow. Second operand 5 states. [2020-10-16 05:12:58,093 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:12:58,093 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 160 [2020-10-16 05:12:58,093 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:12:58,968 INFO L129 PetriNetUnfolder]: 2404/4979 cut-off events. [2020-10-16 05:12:58,968 INFO L130 PetriNetUnfolder]: For 65735/66137 co-relation queries the response was YES. [2020-10-16 05:12:58,990 INFO L80 FinitePrefix]: Finished finitePrefix Result has 33364 conditions, 4979 events. 2404/4979 cut-off events. For 65735/66137 co-relation queries the response was YES. Maximal size of possible extension queue 650. Compared 44377 event pairs, 601 based on Foata normal form. 151/5042 useless extension candidates. Maximal degree in co-relation 33320. Up to 2607 conditions per place. [2020-10-16 05:12:59,012 INFO L132 encePairwiseOnDemand]: 153/160 looper letters, 269 selfloop transitions, 89 changer transitions 0/368 dead transitions. [2020-10-16 05:12:59,012 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 368 transitions, 6406 flow [2020-10-16 05:12:59,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 05:12:59,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 05:12:59,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 700 transitions. [2020-10-16 05:12:59,014 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7291666666666666 [2020-10-16 05:12:59,014 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 700 transitions. [2020-10-16 05:12:59,014 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 700 transitions. [2020-10-16 05:12:59,014 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:12:59,014 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 700 transitions. [2020-10-16 05:12:59,015 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 05:12:59,016 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 05:12:59,016 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 05:12:59,016 INFO L185 Difference]: Start difference. First operand has 116 places, 189 transitions, 2838 flow. Second operand 6 states and 700 transitions. [2020-10-16 05:12:59,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 368 transitions, 6406 flow [2020-10-16 05:12:59,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 368 transitions, 6168 flow, removed 45 selfloop flow, removed 6 redundant places. [2020-10-16 05:12:59,759 INFO L241 Difference]: Finished difference. Result has 118 places, 257 transitions, 4245 flow [2020-10-16 05:12:59,760 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=2708, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4245, PETRI_PLACES=118, PETRI_TRANSITIONS=257} [2020-10-16 05:12:59,760 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 84 predicate places. [2020-10-16 05:12:59,760 INFO L481 AbstractCegarLoop]: Abstraction has has 118 places, 257 transitions, 4245 flow [2020-10-16 05:12:59,760 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 05:12:59,760 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:12:59,760 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:12:59,760 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-16 05:12:59,761 INFO L429 AbstractCegarLoop]: === Iteration 12 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 05:12:59,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:12:59,761 INFO L82 PathProgramCache]: Analyzing trace with hash -1221556651, now seen corresponding path program 1 times [2020-10-16 05:12:59,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:12:59,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981339632] [2020-10-16 05:12:59,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:12:59,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:12:59,828 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 05:12:59,829 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981339632] [2020-10-16 05:12:59,829 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:12:59,829 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 05:12:59,829 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147963069] [2020-10-16 05:12:59,830 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 05:12:59,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:12:59,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 05:12:59,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 05:12:59,832 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 160 [2020-10-16 05:12:59,833 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 257 transitions, 4245 flow. Second operand 9 states. [2020-10-16 05:12:59,833 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:12:59,833 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 160 [2020-10-16 05:12:59,834 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:13:01,478 INFO L129 PetriNetUnfolder]: 2085/4347 cut-off events. [2020-10-16 05:13:01,479 INFO L130 PetriNetUnfolder]: For 59700/60462 co-relation queries the response was YES. [2020-10-16 05:13:01,502 INFO L80 FinitePrefix]: Finished finitePrefix Result has 31859 conditions, 4347 events. 2085/4347 cut-off events. For 59700/60462 co-relation queries the response was YES. Maximal size of possible extension queue 619. Compared 38644 event pairs, 274 based on Foata normal form. 33/4305 useless extension candidates. Maximal degree in co-relation 31812. Up to 1248 conditions per place. [2020-10-16 05:13:01,523 INFO L132 encePairwiseOnDemand]: 151/160 looper letters, 154 selfloop transitions, 244 changer transitions 0/406 dead transitions. [2020-10-16 05:13:01,523 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 406 transitions, 6854 flow [2020-10-16 05:13:01,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 05:13:01,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-16 05:13:01,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3182 transitions. [2020-10-16 05:13:01,526 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6857758620689656 [2020-10-16 05:13:01,526 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3182 transitions. [2020-10-16 05:13:01,527 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3182 transitions. [2020-10-16 05:13:01,527 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:13:01,527 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3182 transitions. [2020-10-16 05:13:01,530 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 30 states. [2020-10-16 05:13:01,533 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 30 states. [2020-10-16 05:13:01,533 INFO L81 ComplementDD]: Finished complementDD. Result 30 states. [2020-10-16 05:13:01,533 INFO L185 Difference]: Start difference. First operand has 118 places, 257 transitions, 4245 flow. Second operand 29 states and 3182 transitions. [2020-10-16 05:13:01,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 406 transitions, 6854 flow [2020-10-16 05:13:02,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 406 transitions, 6475 flow, removed 183 selfloop flow, removed 1 redundant places. [2020-10-16 05:13:02,493 INFO L241 Difference]: Finished difference. Result has 148 places, 290 transitions, 5180 flow [2020-10-16 05:13:02,493 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=4048, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=211, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=5180, PETRI_PLACES=148, PETRI_TRANSITIONS=290} [2020-10-16 05:13:02,493 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 114 predicate places. [2020-10-16 05:13:02,493 INFO L481 AbstractCegarLoop]: Abstraction has has 148 places, 290 transitions, 5180 flow [2020-10-16 05:13:02,493 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 05:13:02,494 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:13:02,494 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:13:02,494 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-16 05:13:02,494 INFO L429 AbstractCegarLoop]: === Iteration 13 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 05:13:02,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:13:02,494 INFO L82 PathProgramCache]: Analyzing trace with hash -1225961131, now seen corresponding path program 2 times [2020-10-16 05:13:02,494 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:13:02,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398209141] [2020-10-16 05:13:02,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:13:02,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:13:02,555 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 05:13:02,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398209141] [2020-10-16 05:13:02,556 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:13:02,556 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 05:13:02,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10676032] [2020-10-16 05:13:02,557 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 05:13:02,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:13:02,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 05:13:02,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 05:13:02,558 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 160 [2020-10-16 05:13:02,559 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 290 transitions, 5180 flow. Second operand 9 states. [2020-10-16 05:13:02,559 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:13:02,559 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 160 [2020-10-16 05:13:02,559 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:13:04,114 INFO L129 PetriNetUnfolder]: 2084/4468 cut-off events. [2020-10-16 05:13:04,114 INFO L130 PetriNetUnfolder]: For 66261/66557 co-relation queries the response was YES. [2020-10-16 05:13:04,140 INFO L80 FinitePrefix]: Finished finitePrefix Result has 33215 conditions, 4468 events. 2084/4468 cut-off events. For 66261/66557 co-relation queries the response was YES. Maximal size of possible extension queue 636. Compared 40234 event pairs, 289 based on Foata normal form. 41/4419 useless extension candidates. Maximal degree in co-relation 33164. Up to 1085 conditions per place. [2020-10-16 05:13:04,160 INFO L132 encePairwiseOnDemand]: 151/160 looper letters, 156 selfloop transitions, 253 changer transitions 0/417 dead transitions. [2020-10-16 05:13:04,160 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 417 transitions, 7334 flow [2020-10-16 05:13:04,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 05:13:04,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-16 05:13:04,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3182 transitions. [2020-10-16 05:13:04,164 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6857758620689656 [2020-10-16 05:13:04,164 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3182 transitions. [2020-10-16 05:13:04,164 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3182 transitions. [2020-10-16 05:13:04,165 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:13:04,165 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3182 transitions. [2020-10-16 05:13:04,168 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 30 states. [2020-10-16 05:13:04,172 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 30 states. [2020-10-16 05:13:04,172 INFO L81 ComplementDD]: Finished complementDD. Result 30 states. [2020-10-16 05:13:04,173 INFO L185 Difference]: Start difference. First operand has 148 places, 290 transitions, 5180 flow. Second operand 29 states and 3182 transitions. [2020-10-16 05:13:04,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 417 transitions, 7334 flow [2020-10-16 05:13:05,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 417 transitions, 6849 flow, removed 32 selfloop flow, removed 20 redundant places. [2020-10-16 05:13:05,515 INFO L241 Difference]: Finished difference. Result has 159 places, 309 transitions, 5637 flow [2020-10-16 05:13:05,516 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=4711, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=234, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=5637, PETRI_PLACES=159, PETRI_TRANSITIONS=309} [2020-10-16 05:13:05,516 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 125 predicate places. [2020-10-16 05:13:05,516 INFO L481 AbstractCegarLoop]: Abstraction has has 159 places, 309 transitions, 5637 flow [2020-10-16 05:13:05,516 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 05:13:05,516 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:13:05,517 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:13:05,517 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-16 05:13:05,517 INFO L429 AbstractCegarLoop]: === Iteration 14 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 05:13:05,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:13:05,517 INFO L82 PathProgramCache]: Analyzing trace with hash -1218502129, now seen corresponding path program 3 times [2020-10-16 05:13:05,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:13:05,518 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553483924] [2020-10-16 05:13:05,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:13:05,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:13:05,577 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 05:13:05,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553483924] [2020-10-16 05:13:05,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043499772] [2020-10-16 05:13:05,578 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 05:13:05,646 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2020-10-16 05:13:05,647 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 05:13:05,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 05:13:05,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 05:13:05,664 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 05:13:05,665 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 05:13:05,665 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2020-10-16 05:13:05,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122100784] [2020-10-16 05:13:05,667 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 05:13:05,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:13:05,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 05:13:05,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 05:13:05,669 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 160 [2020-10-16 05:13:05,669 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 309 transitions, 5637 flow. Second operand 9 states. [2020-10-16 05:13:05,669 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:13:05,669 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 160 [2020-10-16 05:13:05,669 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:13:06,893 INFO L129 PetriNetUnfolder]: 2083/4393 cut-off events. [2020-10-16 05:13:06,893 INFO L130 PetriNetUnfolder]: For 71932/72546 co-relation queries the response was YES. [2020-10-16 05:13:06,921 INFO L80 FinitePrefix]: Finished finitePrefix Result has 34447 conditions, 4393 events. 2083/4393 cut-off events. For 71932/72546 co-relation queries the response was YES. Maximal size of possible extension queue 633. Compared 39287 event pairs, 266 based on Foata normal form. 31/4345 useless extension candidates. Maximal degree in co-relation 34395. Up to 1089 conditions per place. [2020-10-16 05:13:06,942 INFO L132 encePairwiseOnDemand]: 151/160 looper letters, 162 selfloop transitions, 265 changer transitions 0/435 dead transitions. [2020-10-16 05:13:06,942 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 435 transitions, 7866 flow [2020-10-16 05:13:06,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 05:13:06,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-16 05:13:06,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3182 transitions. [2020-10-16 05:13:06,946 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6857758620689656 [2020-10-16 05:13:06,946 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3182 transitions. [2020-10-16 05:13:06,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3182 transitions. [2020-10-16 05:13:06,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:13:06,948 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3182 transitions. [2020-10-16 05:13:06,951 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 30 states. [2020-10-16 05:13:06,956 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 30 states. [2020-10-16 05:13:06,956 INFO L81 ComplementDD]: Finished complementDD. Result 30 states. [2020-10-16 05:13:06,956 INFO L185 Difference]: Start difference. First operand has 159 places, 309 transitions, 5637 flow. Second operand 29 states and 3182 transitions. [2020-10-16 05:13:06,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 435 transitions, 7866 flow [2020-10-16 05:13:08,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 435 transitions, 7426 flow, removed 28 selfloop flow, removed 19 redundant places. [2020-10-16 05:13:08,332 INFO L241 Difference]: Finished difference. Result has 171 places, 334 transitions, 6283 flow [2020-10-16 05:13:08,332 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=5211, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=240, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=6283, PETRI_PLACES=171, PETRI_TRANSITIONS=334} [2020-10-16 05:13:08,332 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 137 predicate places. [2020-10-16 05:13:08,332 INFO L481 AbstractCegarLoop]: Abstraction has has 171 places, 334 transitions, 6283 flow [2020-10-16 05:13:08,332 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 05:13:08,332 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:13:08,333 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:13:08,533 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-10-16 05:13:08,534 INFO L429 AbstractCegarLoop]: === Iteration 15 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 05:13:08,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:13:08,534 INFO L82 PathProgramCache]: Analyzing trace with hash -820266411, now seen corresponding path program 4 times [2020-10-16 05:13:08,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:13:08,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644154033] [2020-10-16 05:13:08,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:13:08,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:13:08,589 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 05:13:08,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644154033] [2020-10-16 05:13:08,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1672919812] [2020-10-16 05:13:08,589 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 05:13:08,660 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 05:13:08,660 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 05:13:08,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 05:13:08,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 05:13:08,677 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 05:13:08,678 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 05:13:08,678 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2020-10-16 05:13:08,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870942242] [2020-10-16 05:13:08,678 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 05:13:08,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:13:08,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 05:13:08,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 05:13:08,680 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 160 [2020-10-16 05:13:08,680 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 334 transitions, 6283 flow. Second operand 9 states. [2020-10-16 05:13:08,681 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:13:08,681 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 160 [2020-10-16 05:13:08,681 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:13:09,897 INFO L129 PetriNetUnfolder]: 2082/4434 cut-off events. [2020-10-16 05:13:09,897 INFO L130 PetriNetUnfolder]: For 78471/78893 co-relation queries the response was YES. [2020-10-16 05:13:09,928 INFO L80 FinitePrefix]: Finished finitePrefix Result has 35717 conditions, 4434 events. 2082/4434 cut-off events. For 78471/78893 co-relation queries the response was YES. Maximal size of possible extension queue 639. Compared 39934 event pairs, 253 based on Foata normal form. 46/4383 useless extension candidates. Maximal degree in co-relation 35662. Up to 1093 conditions per place. [2020-10-16 05:13:09,950 INFO L132 encePairwiseOnDemand]: 151/160 looper letters, 185 selfloop transitions, 266 changer transitions 0/459 dead transitions. [2020-10-16 05:13:09,950 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 459 transitions, 8589 flow [2020-10-16 05:13:09,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 05:13:09,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-16 05:13:09,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3182 transitions. [2020-10-16 05:13:09,955 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6857758620689656 [2020-10-16 05:13:09,955 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3182 transitions. [2020-10-16 05:13:09,955 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3182 transitions. [2020-10-16 05:13:09,956 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:13:09,956 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3182 transitions. [2020-10-16 05:13:09,959 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 30 states. [2020-10-16 05:13:09,963 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 30 states. [2020-10-16 05:13:09,964 INFO L81 ComplementDD]: Finished complementDD. Result 30 states. [2020-10-16 05:13:09,964 INFO L185 Difference]: Start difference. First operand has 171 places, 334 transitions, 6283 flow. Second operand 29 states and 3182 transitions. [2020-10-16 05:13:09,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 459 transitions, 8589 flow [2020-10-16 05:13:11,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 459 transitions, 8157 flow, removed 26 selfloop flow, removed 19 redundant places. [2020-10-16 05:13:11,634 INFO L241 Difference]: Finished difference. Result has 183 places, 353 transitions, 6847 flow [2020-10-16 05:13:11,634 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=5865, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=247, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=6847, PETRI_PLACES=183, PETRI_TRANSITIONS=353} [2020-10-16 05:13:11,635 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 149 predicate places. [2020-10-16 05:13:11,635 INFO L481 AbstractCegarLoop]: Abstraction has has 183 places, 353 transitions, 6847 flow [2020-10-16 05:13:11,635 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 05:13:11,635 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:13:11,635 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:13:11,835 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2020-10-16 05:13:11,836 INFO L429 AbstractCegarLoop]: === Iteration 16 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 05:13:11,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:13:11,837 INFO L82 PathProgramCache]: Analyzing trace with hash -1831610987, now seen corresponding path program 5 times [2020-10-16 05:13:11,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:13:11,837 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945976616] [2020-10-16 05:13:11,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:13:11,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:13:11,892 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 05:13:11,893 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945976616] [2020-10-16 05:13:11,893 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:13:11,893 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 05:13:11,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348663833] [2020-10-16 05:13:11,894 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 05:13:11,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:13:11,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 05:13:11,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 05:13:11,896 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 160 [2020-10-16 05:13:11,897 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 353 transitions, 6847 flow. Second operand 9 states. [2020-10-16 05:13:11,897 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:13:11,897 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 160 [2020-10-16 05:13:11,897 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:13:13,187 INFO L129 PetriNetUnfolder]: 2081/4379 cut-off events. [2020-10-16 05:13:13,187 INFO L130 PetriNetUnfolder]: For 84786/85614 co-relation queries the response was YES. [2020-10-16 05:13:13,218 INFO L80 FinitePrefix]: Finished finitePrefix Result has 36919 conditions, 4379 events. 2081/4379 cut-off events. For 84786/85614 co-relation queries the response was YES. Maximal size of possible extension queue 644. Compared 39370 event pairs, 240 based on Foata normal form. 22/4357 useless extension candidates. Maximal degree in co-relation 36861. Up to 1097 conditions per place. [2020-10-16 05:13:13,239 INFO L132 encePairwiseOnDemand]: 151/160 looper letters, 191 selfloop transitions, 274 changer transitions 0/473 dead transitions. [2020-10-16 05:13:13,240 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 473 transitions, 9092 flow [2020-10-16 05:13:13,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 05:13:13,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-16 05:13:13,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3182 transitions. [2020-10-16 05:13:13,242 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6857758620689656 [2020-10-16 05:13:13,242 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3182 transitions. [2020-10-16 05:13:13,243 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3182 transitions. [2020-10-16 05:13:13,243 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:13:13,243 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3182 transitions. [2020-10-16 05:13:13,245 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 30 states. [2020-10-16 05:13:13,249 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 30 states. [2020-10-16 05:13:13,249 INFO L81 ComplementDD]: Finished complementDD. Result 30 states. [2020-10-16 05:13:13,249 INFO L185 Difference]: Start difference. First operand has 183 places, 353 transitions, 6847 flow. Second operand 29 states and 3182 transitions. [2020-10-16 05:13:13,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 473 transitions, 9092 flow [2020-10-16 05:13:15,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 473 transitions, 8655 flow, removed 36 selfloop flow, removed 18 redundant places. [2020-10-16 05:13:15,082 INFO L241 Difference]: Finished difference. Result has 196 places, 374 transitions, 7438 flow [2020-10-16 05:13:15,082 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=6420, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=253, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=7438, PETRI_PLACES=196, PETRI_TRANSITIONS=374} [2020-10-16 05:13:15,083 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 162 predicate places. [2020-10-16 05:13:15,083 INFO L481 AbstractCegarLoop]: Abstraction has has 196 places, 374 transitions, 7438 flow [2020-10-16 05:13:15,083 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 05:13:15,083 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:13:15,083 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:13:15,083 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-16 05:13:15,083 INFO L429 AbstractCegarLoop]: === Iteration 17 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 05:13:15,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:13:15,084 INFO L82 PathProgramCache]: Analyzing trace with hash -1823367467, now seen corresponding path program 6 times [2020-10-16 05:13:15,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:13:15,084 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518846828] [2020-10-16 05:13:15,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:13:15,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:13:15,128 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 05:13:15,128 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518846828] [2020-10-16 05:13:15,128 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:13:15,128 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 05:13:15,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070099972] [2020-10-16 05:13:15,129 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 05:13:15,129 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:13:15,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 05:13:15,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 05:13:15,131 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 160 [2020-10-16 05:13:15,131 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 374 transitions, 7438 flow. Second operand 9 states. [2020-10-16 05:13:15,131 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:13:15,131 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 160 [2020-10-16 05:13:15,132 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:13:16,438 INFO L129 PetriNetUnfolder]: 2080/4480 cut-off events. [2020-10-16 05:13:16,438 INFO L130 PetriNetUnfolder]: For 92395/92793 co-relation queries the response was YES. [2020-10-16 05:13:16,471 INFO L80 FinitePrefix]: Finished finitePrefix Result has 38344 conditions, 4480 events. 2080/4480 cut-off events. For 92395/92793 co-relation queries the response was YES. Maximal size of possible extension queue 656. Compared 40617 event pairs, 259 based on Foata normal form. 54/4461 useless extension candidates. Maximal degree in co-relation 38283. Up to 1101 conditions per place. [2020-10-16 05:13:16,494 INFO L132 encePairwiseOnDemand]: 151/160 looper letters, 193 selfloop transitions, 279 changer transitions 0/480 dead transitions. [2020-10-16 05:13:16,494 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 480 transitions, 9490 flow [2020-10-16 05:13:16,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 05:13:16,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-16 05:13:16,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3182 transitions. [2020-10-16 05:13:16,498 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6857758620689656 [2020-10-16 05:13:16,498 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3182 transitions. [2020-10-16 05:13:16,498 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3182 transitions. [2020-10-16 05:13:16,499 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:13:16,499 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3182 transitions. [2020-10-16 05:13:16,501 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 30 states. [2020-10-16 05:13:16,503 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 30 states. [2020-10-16 05:13:16,504 INFO L81 ComplementDD]: Finished complementDD. Result 30 states. [2020-10-16 05:13:16,504 INFO L185 Difference]: Start difference. First operand has 196 places, 374 transitions, 7438 flow. Second operand 29 states and 3182 transitions. [2020-10-16 05:13:16,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 480 transitions, 9490 flow [2020-10-16 05:13:18,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 480 transitions, 9055 flow, removed 27 selfloop flow, removed 19 redundant places. [2020-10-16 05:13:18,442 INFO L241 Difference]: Finished difference. Result has 208 places, 387 transitions, 7889 flow [2020-10-16 05:13:18,442 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=7009, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=266, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=7889, PETRI_PLACES=208, PETRI_TRANSITIONS=387} [2020-10-16 05:13:18,442 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 174 predicate places. [2020-10-16 05:13:18,442 INFO L481 AbstractCegarLoop]: Abstraction has has 208 places, 387 transitions, 7889 flow [2020-10-16 05:13:18,442 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 05:13:18,443 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:13:18,443 INFO L255 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:13:18,443 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-16 05:13:18,443 INFO L429 AbstractCegarLoop]: === Iteration 18 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 05:13:18,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:13:18,443 INFO L82 PathProgramCache]: Analyzing trace with hash 1637118645, now seen corresponding path program 1 times [2020-10-16 05:13:18,443 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:13:18,444 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449470993] [2020-10-16 05:13:18,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:13:18,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 05:13:18,451 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 05:13:18,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 05:13:18,458 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 05:13:18,464 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 05:13:18,464 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 05:13:18,464 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-16 05:13:18,465 WARN L371 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-16 05:13:18,465 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2020-10-16 05:13:18,483 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,483 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,483 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,483 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,483 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,484 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,484 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,484 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,484 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,484 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,484 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,484 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,485 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,485 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,485 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,485 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,485 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,485 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,485 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,486 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,486 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,486 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,486 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,486 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,486 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,486 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,487 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,487 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,487 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,487 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,487 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,487 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,487 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,488 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,488 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,488 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,488 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,488 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,488 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,488 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,488 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,489 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,489 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,489 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,489 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,489 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,489 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,489 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,489 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,490 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,490 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,490 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,490 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,490 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,490 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,490 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,491 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,491 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,491 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,491 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,491 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,491 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,491 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,491 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,492 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,492 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,492 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,492 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,492 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,492 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,492 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,493 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,493 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,493 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,493 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,493 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,493 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,493 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,493 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,494 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,494 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,494 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,494 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,494 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,494 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,495 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,495 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,495 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,495 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,495 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,495 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,495 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,495 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,496 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,496 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,496 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,496 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,496 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,496 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,497 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,497 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,497 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,497 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,497 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,497 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,498 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,498 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,498 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,498 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,498 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,504 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,504 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,504 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,504 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,505 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,506 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,506 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,506 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,506 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,506 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,507 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,507 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,507 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,507 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,508 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,509 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,509 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,509 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,509 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,509 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,510 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,510 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,510 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,511 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,511 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,511 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,511 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,512 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,512 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,512 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,512 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,512 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,513 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,513 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,513 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,513 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,513 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,513 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,514 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,514 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,514 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,514 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,514 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,514 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,515 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,515 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,515 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,515 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,515 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,515 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:13:18,516 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-10-16 05:13:18,517 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 05:13:18,517 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 05:13:18,517 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 05:13:18,517 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 05:13:18,517 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 05:13:18,518 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 05:13:18,518 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 05:13:18,518 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 05:13:18,520 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 139 places, 123 transitions, 336 flow [2020-10-16 05:13:18,530 INFO L129 PetriNetUnfolder]: 7/149 cut-off events. [2020-10-16 05:13:18,530 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-10-16 05:13:18,530 INFO L80 FinitePrefix]: Finished finitePrefix Result has 187 conditions, 149 events. 7/149 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 256 event pairs, 0 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 176. Up to 12 conditions per place. [2020-10-16 05:13:18,531 INFO L82 GeneralOperation]: Start removeDead. Operand has 139 places, 123 transitions, 336 flow [2020-10-16 05:13:18,531 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 90 places, 78 transitions, 204 flow [2020-10-16 05:13:18,531 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 05:13:18,531 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 90 places, 78 transitions, 204 flow [2020-10-16 05:13:18,532 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 90 places, 78 transitions, 204 flow [2020-10-16 05:13:18,532 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 90 places, 78 transitions, 204 flow [2020-10-16 05:13:18,539 INFO L129 PetriNetUnfolder]: 7/149 cut-off events. [2020-10-16 05:13:18,539 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-10-16 05:13:18,539 INFO L80 FinitePrefix]: Finished finitePrefix Result has 183 conditions, 149 events. 7/149 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 282 event pairs, 0 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 159. Up to 12 conditions per place. [2020-10-16 05:13:18,543 INFO L117 LiptonReduction]: Number of co-enabled transitions 2860 [2020-10-16 05:13:19,609 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-10-16 05:13:19,687 INFO L132 LiptonReduction]: Checked pairs total: 3913 [2020-10-16 05:13:19,687 INFO L134 LiptonReduction]: Total number of compositions: 61 [2020-10-16 05:13:19,687 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1156 [2020-10-16 05:13:19,689 INFO L129 PetriNetUnfolder]: 0/4 cut-off events. [2020-10-16 05:13:19,689 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:13:19,689 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:13:19,689 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2020-10-16 05:13:19,689 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:13:19,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:13:19,690 INFO L82 PathProgramCache]: Analyzing trace with hash 874831, now seen corresponding path program 1 times [2020-10-16 05:13:19,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:13:19,690 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713286383] [2020-10-16 05:13:19,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:13:19,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:13:19,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:13:19,703 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713286383] [2020-10-16 05:13:19,703 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:13:19,704 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 05:13:19,704 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060488118] [2020-10-16 05:13:19,704 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 05:13:19,704 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:13:19,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 05:13:19,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 05:13:19,705 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 184 [2020-10-16 05:13:19,705 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 25 transitions, 98 flow. Second operand 3 states. [2020-10-16 05:13:19,706 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:13:19,706 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 184 [2020-10-16 05:13:19,706 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:13:19,924 INFO L129 PetriNetUnfolder]: 2028/2755 cut-off events. [2020-10-16 05:13:19,924 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-10-16 05:13:19,930 INFO L80 FinitePrefix]: Finished finitePrefix Result has 5515 conditions, 2755 events. 2028/2755 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 12233 event pairs, 449 based on Foata normal form. 0/2376 useless extension candidates. Maximal degree in co-relation 5502. Up to 2533 conditions per place. [2020-10-16 05:13:19,938 INFO L132 encePairwiseOnDemand]: 177/184 looper letters, 18 selfloop transitions, 6 changer transitions 0/36 dead transitions. [2020-10-16 05:13:19,938 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 36 transitions, 168 flow [2020-10-16 05:13:19,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 05:13:19,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 05:13:19,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 415 transitions. [2020-10-16 05:13:19,939 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7518115942028986 [2020-10-16 05:13:19,939 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 415 transitions. [2020-10-16 05:13:19,939 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 415 transitions. [2020-10-16 05:13:19,940 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:13:19,940 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 415 transitions. [2020-10-16 05:13:19,940 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 05:13:19,941 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 05:13:19,941 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 05:13:19,941 INFO L185 Difference]: Start difference. First operand has 39 places, 25 transitions, 98 flow. Second operand 3 states and 415 transitions. [2020-10-16 05:13:19,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 36 transitions, 168 flow [2020-10-16 05:13:19,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 36 transitions, 147 flow, removed 10 selfloop flow, removed 1 redundant places. [2020-10-16 05:13:19,942 INFO L241 Difference]: Finished difference. Result has 41 places, 30 transitions, 117 flow [2020-10-16 05:13:19,942 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=117, PETRI_PLACES=41, PETRI_TRANSITIONS=30} [2020-10-16 05:13:19,942 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 2 predicate places. [2020-10-16 05:13:19,942 INFO L481 AbstractCegarLoop]: Abstraction has has 41 places, 30 transitions, 117 flow [2020-10-16 05:13:19,942 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 05:13:19,942 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:13:19,942 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:13:19,943 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-16 05:13:19,943 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:13:19,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:13:19,943 INFO L82 PathProgramCache]: Analyzing trace with hash 1633370748, now seen corresponding path program 1 times [2020-10-16 05:13:19,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:13:19,943 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639730205] [2020-10-16 05:13:19,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:13:19,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:13:19,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:13:19,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639730205] [2020-10-16 05:13:19,965 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:13:19,966 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:13:19,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818416732] [2020-10-16 05:13:19,966 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 05:13:19,966 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:13:19,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 05:13:19,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 05:13:19,967 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 184 [2020-10-16 05:13:19,967 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 30 transitions, 117 flow. Second operand 5 states. [2020-10-16 05:13:19,968 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:13:19,968 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 184 [2020-10-16 05:13:19,968 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:13:20,288 INFO L129 PetriNetUnfolder]: 3268/4565 cut-off events. [2020-10-16 05:13:20,288 INFO L130 PetriNetUnfolder]: For 475/475 co-relation queries the response was YES. [2020-10-16 05:13:20,301 INFO L80 FinitePrefix]: Finished finitePrefix Result has 11597 conditions, 4565 events. 3268/4565 cut-off events. For 475/475 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 23786 event pairs, 1090 based on Foata normal form. 81/4436 useless extension candidates. Maximal degree in co-relation 11582. Up to 2308 conditions per place. [2020-10-16 05:13:20,318 INFO L132 encePairwiseOnDemand]: 176/184 looper letters, 38 selfloop transitions, 16 changer transitions 0/65 dead transitions. [2020-10-16 05:13:20,318 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 65 transitions, 327 flow [2020-10-16 05:13:20,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 05:13:20,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 05:13:20,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 823 transitions. [2020-10-16 05:13:20,320 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7454710144927537 [2020-10-16 05:13:20,320 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 823 transitions. [2020-10-16 05:13:20,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 823 transitions. [2020-10-16 05:13:20,321 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:13:20,321 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 823 transitions. [2020-10-16 05:13:20,322 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 05:13:20,323 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 05:13:20,323 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 05:13:20,323 INFO L185 Difference]: Start difference. First operand has 41 places, 30 transitions, 117 flow. Second operand 6 states and 823 transitions. [2020-10-16 05:13:20,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 65 transitions, 327 flow [2020-10-16 05:13:20,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 65 transitions, 317 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 05:13:20,325 INFO L241 Difference]: Finished difference. Result has 48 places, 40 transitions, 216 flow [2020-10-16 05:13:20,325 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=216, PETRI_PLACES=48, PETRI_TRANSITIONS=40} [2020-10-16 05:13:20,326 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 9 predicate places. [2020-10-16 05:13:20,326 INFO L481 AbstractCegarLoop]: Abstraction has has 48 places, 40 transitions, 216 flow [2020-10-16 05:13:20,326 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 05:13:20,326 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:13:20,326 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:13:20,326 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-16 05:13:20,326 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:13:20,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:13:20,327 INFO L82 PathProgramCache]: Analyzing trace with hash -1187441432, now seen corresponding path program 1 times [2020-10-16 05:13:20,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:13:20,327 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227373028] [2020-10-16 05:13:20,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:13:20,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:13:20,354 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 05:13:20,354 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227373028] [2020-10-16 05:13:20,355 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:13:20,355 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:13:20,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561159472] [2020-10-16 05:13:20,355 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 05:13:20,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:13:20,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 05:13:20,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 05:13:20,357 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 184 [2020-10-16 05:13:20,357 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 40 transitions, 216 flow. Second operand 5 states. [2020-10-16 05:13:20,357 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:13:20,357 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 184 [2020-10-16 05:13:20,357 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:13:20,887 INFO L129 PetriNetUnfolder]: 5187/7497 cut-off events. [2020-10-16 05:13:20,887 INFO L130 PetriNetUnfolder]: For 4892/4892 co-relation queries the response was YES. [2020-10-16 05:13:20,913 INFO L80 FinitePrefix]: Finished finitePrefix Result has 24154 conditions, 7497 events. 5187/7497 cut-off events. For 4892/4892 co-relation queries the response was YES. Maximal size of possible extension queue 694. Compared 45042 event pairs, 1734 based on Foata normal form. 127/7325 useless extension candidates. Maximal degree in co-relation 24135. Up to 3925 conditions per place. [2020-10-16 05:13:20,947 INFO L132 encePairwiseOnDemand]: 176/184 looper letters, 48 selfloop transitions, 25 changer transitions 0/84 dead transitions. [2020-10-16 05:13:20,947 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 84 transitions, 573 flow [2020-10-16 05:13:20,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 05:13:20,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 05:13:20,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 818 transitions. [2020-10-16 05:13:20,948 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7409420289855072 [2020-10-16 05:13:20,948 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 818 transitions. [2020-10-16 05:13:20,948 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 818 transitions. [2020-10-16 05:13:20,948 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:13:20,949 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 818 transitions. [2020-10-16 05:13:20,949 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 05:13:20,950 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 05:13:20,950 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 05:13:20,950 INFO L185 Difference]: Start difference. First operand has 48 places, 40 transitions, 216 flow. Second operand 6 states and 818 transitions. [2020-10-16 05:13:20,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 84 transitions, 573 flow [2020-10-16 05:13:20,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 84 transitions, 532 flow, removed 8 selfloop flow, removed 2 redundant places. [2020-10-16 05:13:20,962 INFO L241 Difference]: Finished difference. Result has 54 places, 55 transitions, 378 flow [2020-10-16 05:13:20,962 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=378, PETRI_PLACES=54, PETRI_TRANSITIONS=55} [2020-10-16 05:13:20,962 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 15 predicate places. [2020-10-16 05:13:20,962 INFO L481 AbstractCegarLoop]: Abstraction has has 54 places, 55 transitions, 378 flow [2020-10-16 05:13:20,962 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 05:13:20,963 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:13:20,963 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:13:20,963 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-16 05:13:20,963 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:13:20,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:13:20,963 INFO L82 PathProgramCache]: Analyzing trace with hash -1467459476, now seen corresponding path program 1 times [2020-10-16 05:13:20,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:13:20,964 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530300648] [2020-10-16 05:13:20,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:13:20,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:13:21,004 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-16 05:13:21,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530300648] [2020-10-16 05:13:21,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [913505748] [2020-10-16 05:13:21,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 05:13:21,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:13:21,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-16 05:13:21,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 05:13:21,098 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-16 05:13:21,098 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 05:13:21,099 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-10-16 05:13:21,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326769381] [2020-10-16 05:13:21,099 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 05:13:21,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:13:21,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 05:13:21,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-16 05:13:21,101 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 184 [2020-10-16 05:13:21,101 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 55 transitions, 378 flow. Second operand 9 states. [2020-10-16 05:13:21,101 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:13:21,102 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 184 [2020-10-16 05:13:21,102 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:13:21,883 INFO L129 PetriNetUnfolder]: 5524/8095 cut-off events. [2020-10-16 05:13:21,883 INFO L130 PetriNetUnfolder]: For 10687/10687 co-relation queries the response was YES. [2020-10-16 05:13:21,913 INFO L80 FinitePrefix]: Finished finitePrefix Result has 30612 conditions, 8095 events. 5524/8095 cut-off events. For 10687/10687 co-relation queries the response was YES. Maximal size of possible extension queue 759. Compared 49996 event pairs, 1393 based on Foata normal form. 27/7827 useless extension candidates. Maximal degree in co-relation 30590. Up to 3668 conditions per place. [2020-10-16 05:13:21,950 INFO L132 encePairwiseOnDemand]: 175/184 looper letters, 77 selfloop transitions, 47 changer transitions 0/134 dead transitions. [2020-10-16 05:13:21,950 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 134 transitions, 974 flow [2020-10-16 05:13:21,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 05:13:21,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 05:13:21,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1745 transitions. [2020-10-16 05:13:21,952 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7295150501672241 [2020-10-16 05:13:21,952 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1745 transitions. [2020-10-16 05:13:21,952 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1745 transitions. [2020-10-16 05:13:21,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:13:21,953 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1745 transitions. [2020-10-16 05:13:21,954 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 05:13:21,955 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 05:13:21,955 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 05:13:21,955 INFO L185 Difference]: Start difference. First operand has 54 places, 55 transitions, 378 flow. Second operand 13 states and 1745 transitions. [2020-10-16 05:13:21,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 134 transitions, 974 flow [2020-10-16 05:13:21,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 134 transitions, 938 flow, removed 14 selfloop flow, removed 1 redundant places. [2020-10-16 05:13:21,990 INFO L241 Difference]: Finished difference. Result has 68 places, 71 transitions, 604 flow [2020-10-16 05:13:21,990 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=604, PETRI_PLACES=68, PETRI_TRANSITIONS=71} [2020-10-16 05:13:21,990 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 29 predicate places. [2020-10-16 05:13:21,990 INFO L481 AbstractCegarLoop]: Abstraction has has 68 places, 71 transitions, 604 flow [2020-10-16 05:13:21,990 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 05:13:21,990 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:13:21,990 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:13:22,191 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2020-10-16 05:13:22,191 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:13:22,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:13:22,192 INFO L82 PathProgramCache]: Analyzing trace with hash 1330099940, now seen corresponding path program 2 times [2020-10-16 05:13:22,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:13:22,193 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151373282] [2020-10-16 05:13:22,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:13:22,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:13:22,224 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 05:13:22,225 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151373282] [2020-10-16 05:13:22,225 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:13:22,225 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 05:13:22,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281046793] [2020-10-16 05:13:22,226 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 05:13:22,226 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:13:22,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 05:13:22,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 05:13:22,228 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 184 [2020-10-16 05:13:22,228 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 71 transitions, 604 flow. Second operand 7 states. [2020-10-16 05:13:22,229 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:13:22,229 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 184 [2020-10-16 05:13:22,229 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:13:23,036 INFO L129 PetriNetUnfolder]: 5860/8571 cut-off events. [2020-10-16 05:13:23,036 INFO L130 PetriNetUnfolder]: For 20675/20675 co-relation queries the response was YES. [2020-10-16 05:13:23,078 INFO L80 FinitePrefix]: Finished finitePrefix Result has 37129 conditions, 8571 events. 5860/8571 cut-off events. For 20675/20675 co-relation queries the response was YES. Maximal size of possible extension queue 821. Compared 54145 event pairs, 1396 based on Foata normal form. 27/8330 useless extension candidates. Maximal degree in co-relation 37103. Up to 3411 conditions per place. [2020-10-16 05:13:23,119 INFO L132 encePairwiseOnDemand]: 175/184 looper letters, 81 selfloop transitions, 54 changer transitions 0/145 dead transitions. [2020-10-16 05:13:23,120 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 145 transitions, 1227 flow [2020-10-16 05:13:23,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 05:13:23,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 05:13:23,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1745 transitions. [2020-10-16 05:13:23,122 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7295150501672241 [2020-10-16 05:13:23,122 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1745 transitions. [2020-10-16 05:13:23,122 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1745 transitions. [2020-10-16 05:13:23,123 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:13:23,123 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1745 transitions. [2020-10-16 05:13:23,124 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 05:13:23,126 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 05:13:23,126 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 05:13:23,126 INFO L185 Difference]: Start difference. First operand has 68 places, 71 transitions, 604 flow. Second operand 13 states and 1745 transitions. [2020-10-16 05:13:23,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 145 transitions, 1227 flow [2020-10-16 05:13:23,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 145 transitions, 1122 flow, removed 10 selfloop flow, removed 7 redundant places. [2020-10-16 05:13:23,288 INFO L241 Difference]: Finished difference. Result has 76 places, 83 transitions, 759 flow [2020-10-16 05:13:23,288 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=507, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=759, PETRI_PLACES=76, PETRI_TRANSITIONS=83} [2020-10-16 05:13:23,288 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 37 predicate places. [2020-10-16 05:13:23,289 INFO L481 AbstractCegarLoop]: Abstraction has has 76 places, 83 transitions, 759 flow [2020-10-16 05:13:23,289 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 05:13:23,289 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:13:23,289 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:13:23,289 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-16 05:13:23,289 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:13:23,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:13:23,289 INFO L82 PathProgramCache]: Analyzing trace with hash -301070015, now seen corresponding path program 1 times [2020-10-16 05:13:23,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:13:23,290 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986772969] [2020-10-16 05:13:23,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:13:23,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:13:23,324 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 05:13:23,324 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986772969] [2020-10-16 05:13:23,325 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:13:23,325 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:13:23,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905414981] [2020-10-16 05:13:23,325 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 05:13:23,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:13:23,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 05:13:23,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 05:13:23,327 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 184 [2020-10-16 05:13:23,328 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 83 transitions, 759 flow. Second operand 5 states. [2020-10-16 05:13:23,328 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:13:23,328 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 184 [2020-10-16 05:13:23,328 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:13:24,562 INFO L129 PetriNetUnfolder]: 9063/13811 cut-off events. [2020-10-16 05:13:24,563 INFO L130 PetriNetUnfolder]: For 49101/49129 co-relation queries the response was YES. [2020-10-16 05:13:24,649 INFO L80 FinitePrefix]: Finished finitePrefix Result has 67489 conditions, 13811 events. 9063/13811 cut-off events. For 49101/49129 co-relation queries the response was YES. Maximal size of possible extension queue 1357. Compared 99671 event pairs, 2889 based on Foata normal form. 230/13585 useless extension candidates. Maximal degree in co-relation 67461. Up to 7113 conditions per place. [2020-10-16 05:13:24,720 INFO L132 encePairwiseOnDemand]: 176/184 looper letters, 111 selfloop transitions, 49 changer transitions 0/171 dead transitions. [2020-10-16 05:13:24,720 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 171 transitions, 1905 flow [2020-10-16 05:13:24,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 05:13:24,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 05:13:24,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 824 transitions. [2020-10-16 05:13:24,722 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7463768115942029 [2020-10-16 05:13:24,722 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 824 transitions. [2020-10-16 05:13:24,722 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 824 transitions. [2020-10-16 05:13:24,722 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:13:24,722 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 824 transitions. [2020-10-16 05:13:24,723 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 05:13:24,723 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 05:13:24,723 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 05:13:24,723 INFO L185 Difference]: Start difference. First operand has 76 places, 83 transitions, 759 flow. Second operand 6 states and 824 transitions. [2020-10-16 05:13:24,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 171 transitions, 1905 flow [2020-10-16 05:13:25,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 171 transitions, 1682 flow, removed 22 selfloop flow, removed 9 redundant places. [2020-10-16 05:13:25,125 INFO L241 Difference]: Finished difference. Result has 75 places, 115 transitions, 1155 flow [2020-10-16 05:13:25,125 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=645, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1155, PETRI_PLACES=75, PETRI_TRANSITIONS=115} [2020-10-16 05:13:25,125 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 36 predicate places. [2020-10-16 05:13:25,125 INFO L481 AbstractCegarLoop]: Abstraction has has 75 places, 115 transitions, 1155 flow [2020-10-16 05:13:25,125 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 05:13:25,126 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:13:25,126 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:13:25,126 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-16 05:13:25,126 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:13:25,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:13:25,126 INFO L82 PathProgramCache]: Analyzing trace with hash 458807869, now seen corresponding path program 1 times [2020-10-16 05:13:25,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:13:25,127 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481332212] [2020-10-16 05:13:25,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:13:25,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:13:25,167 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-16 05:13:25,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481332212] [2020-10-16 05:13:25,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1263579386] [2020-10-16 05:13:25,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 05:13:25,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:13:25,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-16 05:13:25,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 05:13:25,269 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-16 05:13:25,269 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 05:13:25,269 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-10-16 05:13:25,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232413232] [2020-10-16 05:13:25,270 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 05:13:25,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:13:25,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 05:13:25,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-16 05:13:25,271 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 184 [2020-10-16 05:13:25,272 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 115 transitions, 1155 flow. Second operand 9 states. [2020-10-16 05:13:25,272 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:13:25,272 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 184 [2020-10-16 05:13:25,272 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:13:26,845 INFO L129 PetriNetUnfolder]: 9689/14859 cut-off events. [2020-10-16 05:13:26,845 INFO L130 PetriNetUnfolder]: For 68531/68565 co-relation queries the response was YES. [2020-10-16 05:13:26,939 INFO L80 FinitePrefix]: Finished finitePrefix Result has 78371 conditions, 14859 events. 9689/14859 cut-off events. For 68531/68565 co-relation queries the response was YES. Maximal size of possible extension queue 1491. Compared 110073 event pairs, 2334 based on Foata normal form. 68/14534 useless extension candidates. Maximal degree in co-relation 78340. Up to 5972 conditions per place. [2020-10-16 05:13:27,019 INFO L132 encePairwiseOnDemand]: 175/184 looper letters, 118 selfloop transitions, 97 changer transitions 0/225 dead transitions. [2020-10-16 05:13:27,019 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 225 transitions, 2441 flow [2020-10-16 05:13:27,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 05:13:27,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 05:13:27,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1760 transitions. [2020-10-16 05:13:27,022 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7357859531772575 [2020-10-16 05:13:27,022 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1760 transitions. [2020-10-16 05:13:27,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1760 transitions. [2020-10-16 05:13:27,022 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:13:27,022 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1760 transitions. [2020-10-16 05:13:27,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 05:13:27,025 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 05:13:27,026 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 05:13:27,026 INFO L185 Difference]: Start difference. First operand has 75 places, 115 transitions, 1155 flow. Second operand 13 states and 1760 transitions. [2020-10-16 05:13:27,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 225 transitions, 2441 flow [2020-10-16 05:13:27,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 225 transitions, 2352 flow, removed 38 selfloop flow, removed 1 redundant places. [2020-10-16 05:13:27,733 INFO L241 Difference]: Finished difference. Result has 89 places, 146 transitions, 1704 flow [2020-10-16 05:13:27,733 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=1090, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1704, PETRI_PLACES=89, PETRI_TRANSITIONS=146} [2020-10-16 05:13:27,733 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 50 predicate places. [2020-10-16 05:13:27,734 INFO L481 AbstractCegarLoop]: Abstraction has has 89 places, 146 transitions, 1704 flow [2020-10-16 05:13:27,734 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 05:13:27,734 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:13:27,734 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:13:27,934 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-10-16 05:13:27,935 INFO L429 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:13:27,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:13:27,935 INFO L82 PathProgramCache]: Analyzing trace with hash 965067293, now seen corresponding path program 1 times [2020-10-16 05:13:27,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:13:27,936 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236118658] [2020-10-16 05:13:27,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:13:27,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:13:27,974 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 05:13:27,974 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236118658] [2020-10-16 05:13:27,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994817047] [2020-10-16 05:13:27,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 05:13:28,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:13:28,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-16 05:13:28,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 05:13:28,090 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 05:13:28,091 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 05:13:28,091 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-10-16 05:13:28,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135933915] [2020-10-16 05:13:28,092 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 05:13:28,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:13:28,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 05:13:28,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-16 05:13:28,094 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 184 [2020-10-16 05:13:28,096 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 146 transitions, 1704 flow. Second operand 9 states. [2020-10-16 05:13:28,096 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:13:28,096 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 184 [2020-10-16 05:13:28,096 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:13:30,428 INFO L129 PetriNetUnfolder]: 10260/15910 cut-off events. [2020-10-16 05:13:30,428 INFO L130 PetriNetUnfolder]: For 95501/95501 co-relation queries the response was YES. [2020-10-16 05:13:30,545 INFO L80 FinitePrefix]: Finished finitePrefix Result has 90775 conditions, 15910 events. 10260/15910 cut-off events. For 95501/95501 co-relation queries the response was YES. Maximal size of possible extension queue 1613. Compared 120417 event pairs, 2369 based on Foata normal form. 59/15547 useless extension candidates. Maximal degree in co-relation 90740. Up to 5634 conditions per place. [2020-10-16 05:13:30,632 INFO L132 encePairwiseOnDemand]: 175/184 looper letters, 144 selfloop transitions, 110 changer transitions 0/264 dead transitions. [2020-10-16 05:13:30,632 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 264 transitions, 3250 flow [2020-10-16 05:13:30,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 05:13:30,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 05:13:30,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1748 transitions. [2020-10-16 05:13:30,635 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7307692307692307 [2020-10-16 05:13:30,635 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1748 transitions. [2020-10-16 05:13:30,635 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1748 transitions. [2020-10-16 05:13:30,636 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:13:30,636 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1748 transitions. [2020-10-16 05:13:30,638 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 05:13:30,639 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 05:13:30,639 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 05:13:30,639 INFO L185 Difference]: Start difference. First operand has 89 places, 146 transitions, 1704 flow. Second operand 13 states and 1748 transitions. [2020-10-16 05:13:30,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 264 transitions, 3250 flow [2020-10-16 05:13:31,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 264 transitions, 3135 flow, removed 36 selfloop flow, removed 3 redundant places. [2020-10-16 05:13:31,937 INFO L241 Difference]: Finished difference. Result has 101 places, 181 transitions, 2342 flow [2020-10-16 05:13:31,937 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=1619, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2342, PETRI_PLACES=101, PETRI_TRANSITIONS=181} [2020-10-16 05:13:31,938 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 62 predicate places. [2020-10-16 05:13:31,938 INFO L481 AbstractCegarLoop]: Abstraction has has 101 places, 181 transitions, 2342 flow [2020-10-16 05:13:31,938 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 05:13:31,938 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:13:31,938 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:13:32,144 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2020-10-16 05:13:32,145 INFO L429 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:13:32,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:13:32,145 INFO L82 PathProgramCache]: Analyzing trace with hash -1565460227, now seen corresponding path program 2 times [2020-10-16 05:13:32,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:13:32,146 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567336136] [2020-10-16 05:13:32,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:13:32,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:13:32,186 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 05:13:32,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567336136] [2020-10-16 05:13:32,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:13:32,187 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 05:13:32,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100113782] [2020-10-16 05:13:32,188 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 05:13:32,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:13:32,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 05:13:32,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 05:13:32,189 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 184 [2020-10-16 05:13:32,190 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 181 transitions, 2342 flow. Second operand 7 states. [2020-10-16 05:13:32,190 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:13:32,190 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 184 [2020-10-16 05:13:32,190 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:13:34,148 INFO L129 PetriNetUnfolder]: 10713/16682 cut-off events. [2020-10-16 05:13:34,148 INFO L130 PetriNetUnfolder]: For 129074/129108 co-relation queries the response was YES. [2020-10-16 05:13:34,277 INFO L80 FinitePrefix]: Finished finitePrefix Result has 103642 conditions, 16682 events. 10713/16682 cut-off events. For 129074/129108 co-relation queries the response was YES. Maximal size of possible extension queue 1713. Compared 128786 event pairs, 2456 based on Foata normal form. 54/16340 useless extension candidates. Maximal degree in co-relation 103604. Up to 5806 conditions per place. [2020-10-16 05:13:34,372 INFO L132 encePairwiseOnDemand]: 175/184 looper letters, 152 selfloop transitions, 124 changer transitions 0/286 dead transitions. [2020-10-16 05:13:34,372 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 286 transitions, 3841 flow [2020-10-16 05:13:34,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 05:13:34,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 05:13:34,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1760 transitions. [2020-10-16 05:13:34,374 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7357859531772575 [2020-10-16 05:13:34,374 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1760 transitions. [2020-10-16 05:13:34,374 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1760 transitions. [2020-10-16 05:13:34,374 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:13:34,374 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1760 transitions. [2020-10-16 05:13:34,375 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 05:13:34,377 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 05:13:34,377 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 05:13:34,377 INFO L185 Difference]: Start difference. First operand has 101 places, 181 transitions, 2342 flow. Second operand 13 states and 1760 transitions. [2020-10-16 05:13:34,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 286 transitions, 3841 flow [2020-10-16 05:13:36,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 286 transitions, 3755 flow, removed 40 selfloop flow, removed 1 redundant places. [2020-10-16 05:13:36,511 INFO L241 Difference]: Finished difference. Result has 115 places, 204 transitions, 2919 flow [2020-10-16 05:13:36,511 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=2284, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2919, PETRI_PLACES=115, PETRI_TRANSITIONS=204} [2020-10-16 05:13:36,511 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 76 predicate places. [2020-10-16 05:13:36,511 INFO L481 AbstractCegarLoop]: Abstraction has has 115 places, 204 transitions, 2919 flow [2020-10-16 05:13:36,511 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 05:13:36,511 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:13:36,511 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:13:36,511 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-16 05:13:36,512 INFO L429 AbstractCegarLoop]: === Iteration 10 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:13:36,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:13:36,512 INFO L82 PathProgramCache]: Analyzing trace with hash -1565467171, now seen corresponding path program 2 times [2020-10-16 05:13:36,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:13:36,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034314765] [2020-10-16 05:13:36,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:13:36,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:13:36,549 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 05:13:36,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034314765] [2020-10-16 05:13:36,549 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:13:36,549 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 05:13:36,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981108799] [2020-10-16 05:13:36,550 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 05:13:36,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:13:36,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 05:13:36,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 05:13:36,551 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 184 [2020-10-16 05:13:36,552 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 204 transitions, 2919 flow. Second operand 7 states. [2020-10-16 05:13:36,552 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:13:36,552 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 184 [2020-10-16 05:13:36,552 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:13:38,704 INFO L129 PetriNetUnfolder]: 11284/17673 cut-off events. [2020-10-16 05:13:38,705 INFO L130 PetriNetUnfolder]: For 158825/158825 co-relation queries the response was YES. [2020-10-16 05:13:38,872 INFO L80 FinitePrefix]: Finished finitePrefix Result has 118403 conditions, 17673 events. 11284/17673 cut-off events. For 158825/158825 co-relation queries the response was YES. Maximal size of possible extension queue 1836. Compared 139543 event pairs, 2498 based on Foata normal form. 59/17386 useless extension candidates. Maximal degree in co-relation 118361. Up to 6174 conditions per place. [2020-10-16 05:13:38,977 INFO L132 encePairwiseOnDemand]: 175/184 looper letters, 160 selfloop transitions, 140 changer transitions 0/310 dead transitions. [2020-10-16 05:13:38,977 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 310 transitions, 4580 flow [2020-10-16 05:13:38,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 05:13:38,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 05:13:38,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1748 transitions. [2020-10-16 05:13:38,979 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7307692307692307 [2020-10-16 05:13:38,979 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1748 transitions. [2020-10-16 05:13:38,980 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1748 transitions. [2020-10-16 05:13:38,980 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:13:38,980 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1748 transitions. [2020-10-16 05:13:38,982 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 05:13:38,983 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 05:13:38,983 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 05:13:38,983 INFO L185 Difference]: Start difference. First operand has 115 places, 204 transitions, 2919 flow. Second operand 13 states and 1748 transitions. [2020-10-16 05:13:38,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 310 transitions, 4580 flow [2020-10-16 05:13:44,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 310 transitions, 4261 flow, removed 41 selfloop flow, removed 9 redundant places. [2020-10-16 05:13:44,219 INFO L241 Difference]: Finished difference. Result has 121 places, 233 transitions, 3449 flow [2020-10-16 05:13:44,220 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=2668, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3449, PETRI_PLACES=121, PETRI_TRANSITIONS=233} [2020-10-16 05:13:44,220 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 82 predicate places. [2020-10-16 05:13:44,220 INFO L481 AbstractCegarLoop]: Abstraction has has 121 places, 233 transitions, 3449 flow [2020-10-16 05:13:44,220 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 05:13:44,220 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:13:44,220 INFO L255 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:13:44,221 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-16 05:13:44,221 INFO L429 AbstractCegarLoop]: === Iteration 11 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:13:44,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:13:44,221 INFO L82 PathProgramCache]: Analyzing trace with hash -251848556, now seen corresponding path program 1 times [2020-10-16 05:13:44,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:13:44,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938658030] [2020-10-16 05:13:44,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:13:44,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:13:44,245 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 05:13:44,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938658030] [2020-10-16 05:13:44,246 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:13:44,246 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:13:44,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382966470] [2020-10-16 05:13:44,246 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 05:13:44,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:13:44,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 05:13:44,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 05:13:44,248 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 184 [2020-10-16 05:13:44,248 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 233 transitions, 3449 flow. Second operand 5 states. [2020-10-16 05:13:44,248 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:13:44,248 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 184 [2020-10-16 05:13:44,248 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:13:48,077 INFO L129 PetriNetUnfolder]: 17075/27646 cut-off events. [2020-10-16 05:13:48,078 INFO L130 PetriNetUnfolder]: For 330076/330452 co-relation queries the response was YES. [2020-10-16 05:13:48,357 INFO L80 FinitePrefix]: Finished finitePrefix Result has 199256 conditions, 27646 events. 17075/27646 cut-off events. For 330076/330452 co-relation queries the response was YES. Maximal size of possible extension queue 2852. Compared 243704 event pairs, 3741 based on Foata normal form. 478/27985 useless extension candidates. Maximal degree in co-relation 199211. Up to 14958 conditions per place. [2020-10-16 05:13:48,537 INFO L132 encePairwiseOnDemand]: 176/184 looper letters, 360 selfloop transitions, 106 changer transitions 0/477 dead transitions. [2020-10-16 05:13:48,537 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 477 transitions, 8157 flow [2020-10-16 05:13:48,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 05:13:48,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 05:13:48,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 818 transitions. [2020-10-16 05:13:48,538 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7409420289855072 [2020-10-16 05:13:48,538 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 818 transitions. [2020-10-16 05:13:48,538 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 818 transitions. [2020-10-16 05:13:48,539 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:13:48,539 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 818 transitions. [2020-10-16 05:13:48,540 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 05:13:48,540 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 05:13:48,540 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 05:13:48,540 INFO L185 Difference]: Start difference. First operand has 121 places, 233 transitions, 3449 flow. Second operand 6 states and 818 transitions. [2020-10-16 05:13:48,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 477 transitions, 8157 flow [2020-10-16 05:13:59,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 477 transitions, 7807 flow, removed 60 selfloop flow, removed 7 redundant places. [2020-10-16 05:13:59,596 INFO L241 Difference]: Finished difference. Result has 122 places, 310 transitions, 4984 flow [2020-10-16 05:13:59,596 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=3268, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4984, PETRI_PLACES=122, PETRI_TRANSITIONS=310} [2020-10-16 05:13:59,596 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 83 predicate places. [2020-10-16 05:13:59,596 INFO L481 AbstractCegarLoop]: Abstraction has has 122 places, 310 transitions, 4984 flow [2020-10-16 05:13:59,596 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 05:13:59,596 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:13:59,597 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:13:59,597 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-16 05:13:59,597 INFO L429 AbstractCegarLoop]: === Iteration 12 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:13:59,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:13:59,597 INFO L82 PathProgramCache]: Analyzing trace with hash -1481129127, now seen corresponding path program 1 times [2020-10-16 05:13:59,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:13:59,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049842867] [2020-10-16 05:13:59,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:13:59,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:13:59,670 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-16 05:13:59,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049842867] [2020-10-16 05:13:59,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1409065331] [2020-10-16 05:13:59,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 05:13:59,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:13:59,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 05:13:59,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 05:13:59,779 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-16 05:13:59,780 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 05:13:59,780 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-16 05:13:59,780 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701680433] [2020-10-16 05:13:59,780 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 05:13:59,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:13:59,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 05:13:59,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-16 05:13:59,787 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 184 [2020-10-16 05:13:59,788 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 310 transitions, 4984 flow. Second operand 11 states. [2020-10-16 05:13:59,788 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:13:59,788 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 184 [2020-10-16 05:13:59,788 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:14:05,475 INFO L129 PetriNetUnfolder]: 16818/27359 cut-off events. [2020-10-16 05:14:05,476 INFO L130 PetriNetUnfolder]: For 360098/360602 co-relation queries the response was YES. [2020-10-16 05:14:05,765 INFO L80 FinitePrefix]: Finished finitePrefix Result has 209081 conditions, 27359 events. 16818/27359 cut-off events. For 360098/360602 co-relation queries the response was YES. Maximal size of possible extension queue 2879. Compared 243565 event pairs, 3530 based on Foata normal form. 54/27051 useless extension candidates. Maximal degree in co-relation 209033. Up to 9653 conditions per place. [2020-10-16 05:14:05,943 INFO L132 encePairwiseOnDemand]: 174/184 looper letters, 216 selfloop transitions, 297 changer transitions 0/522 dead transitions. [2020-10-16 05:14:05,943 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 522 transitions, 8566 flow [2020-10-16 05:14:05,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 05:14:05,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-16 05:14:05,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3826 transitions. [2020-10-16 05:14:05,947 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.717016491754123 [2020-10-16 05:14:05,947 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3826 transitions. [2020-10-16 05:14:05,947 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3826 transitions. [2020-10-16 05:14:05,948 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:14:05,948 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3826 transitions. [2020-10-16 05:14:05,951 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 30 states. [2020-10-16 05:14:05,954 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 30 states. [2020-10-16 05:14:05,954 INFO L81 ComplementDD]: Finished complementDD. Result 30 states. [2020-10-16 05:14:05,954 INFO L185 Difference]: Start difference. First operand has 122 places, 310 transitions, 4984 flow. Second operand 29 states and 3826 transitions. [2020-10-16 05:14:05,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 522 transitions, 8566 flow [2020-10-16 05:14:18,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 522 transitions, 8019 flow, removed 263 selfloop flow, removed 1 redundant places. [2020-10-16 05:14:18,419 INFO L241 Difference]: Finished difference. Result has 152 places, 350 transitions, 6117 flow [2020-10-16 05:14:18,420 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=4759, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=257, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=6117, PETRI_PLACES=152, PETRI_TRANSITIONS=350} [2020-10-16 05:14:18,420 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 113 predicate places. [2020-10-16 05:14:18,420 INFO L481 AbstractCegarLoop]: Abstraction has has 152 places, 350 transitions, 6117 flow [2020-10-16 05:14:18,420 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 05:14:18,420 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:14:18,420 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:14:18,621 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 05:14:18,621 INFO L429 AbstractCegarLoop]: === Iteration 13 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:14:18,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:14:18,622 INFO L82 PathProgramCache]: Analyzing trace with hash 1603723083, now seen corresponding path program 2 times [2020-10-16 05:14:18,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:14:18,622 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831291345] [2020-10-16 05:14:18,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:14:18,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:14:18,670 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-16 05:14:18,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831291345] [2020-10-16 05:14:18,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2085066628] [2020-10-16 05:14:18,671 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 05:14:18,740 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 05:14:18,740 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 05:14:18,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 05:14:18,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 05:14:18,773 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-16 05:14:18,773 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 05:14:18,774 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-16 05:14:18,774 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203262269] [2020-10-16 05:14:18,774 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 05:14:18,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:14:18,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 05:14:18,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-16 05:14:18,776 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 184 [2020-10-16 05:14:18,777 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 350 transitions, 6117 flow. Second operand 11 states. [2020-10-16 05:14:18,777 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:14:18,777 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 184 [2020-10-16 05:14:18,777 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:14:23,708 INFO L129 PetriNetUnfolder]: 16879/27446 cut-off events. [2020-10-16 05:14:23,708 INFO L130 PetriNetUnfolder]: For 430340/431168 co-relation queries the response was YES. [2020-10-16 05:14:24,061 INFO L80 FinitePrefix]: Finished finitePrefix Result has 217802 conditions, 27446 events. 16879/27446 cut-off events. For 430340/431168 co-relation queries the response was YES. Maximal size of possible extension queue 2901. Compared 245601 event pairs, 3131 based on Foata normal form. 32/27195 useless extension candidates. Maximal degree in co-relation 217750. Up to 8561 conditions per place. [2020-10-16 05:14:24,246 INFO L132 encePairwiseOnDemand]: 174/184 looper letters, 221 selfloop transitions, 309 changer transitions 0/539 dead transitions. [2020-10-16 05:14:24,247 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 539 transitions, 9169 flow [2020-10-16 05:14:24,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 05:14:24,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-16 05:14:24,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3826 transitions. [2020-10-16 05:14:24,250 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.717016491754123 [2020-10-16 05:14:24,250 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3826 transitions. [2020-10-16 05:14:24,251 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3826 transitions. [2020-10-16 05:14:24,251 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:14:24,252 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3826 transitions. [2020-10-16 05:14:24,255 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 30 states. [2020-10-16 05:14:24,258 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 30 states. [2020-10-16 05:14:24,258 INFO L81 ComplementDD]: Finished complementDD. Result 30 states. [2020-10-16 05:14:24,258 INFO L185 Difference]: Start difference. First operand has 152 places, 350 transitions, 6117 flow. Second operand 29 states and 3826 transitions. [2020-10-16 05:14:24,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 539 transitions, 9169 flow [2020-10-16 05:14:46,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 539 transitions, 8582 flow, removed 41 selfloop flow, removed 19 redundant places. [2020-10-16 05:14:46,295 INFO L241 Difference]: Finished difference. Result has 164 places, 374 transitions, 6684 flow [2020-10-16 05:14:46,296 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=5550, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=285, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=6684, PETRI_PLACES=164, PETRI_TRANSITIONS=374} [2020-10-16 05:14:46,296 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 125 predicate places. [2020-10-16 05:14:46,296 INFO L481 AbstractCegarLoop]: Abstraction has has 164 places, 374 transitions, 6684 flow [2020-10-16 05:14:46,296 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 05:14:46,296 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:14:46,296 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:14:46,497 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2020-10-16 05:14:46,497 INFO L429 AbstractCegarLoop]: === Iteration 14 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:14:46,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:14:46,498 INFO L82 PathProgramCache]: Analyzing trace with hash -1624984167, now seen corresponding path program 3 times [2020-10-16 05:14:46,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:14:46,498 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533387327] [2020-10-16 05:14:46,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:14:46,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:14:46,563 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 05:14:46,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533387327] [2020-10-16 05:14:46,563 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:14:46,564 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 05:14:46,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655678849] [2020-10-16 05:14:46,564 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 05:14:46,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:14:46,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 05:14:46,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 05:14:46,566 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 184 [2020-10-16 05:14:46,567 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 374 transitions, 6684 flow. Second operand 9 states. [2020-10-16 05:14:46,567 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:14:46,568 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 184 [2020-10-16 05:14:46,568 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:14:51,853 INFO L129 PetriNetUnfolder]: 16940/27729 cut-off events. [2020-10-16 05:14:51,853 INFO L130 PetriNetUnfolder]: For 485973/486371 co-relation queries the response was YES. [2020-10-16 05:14:52,148 INFO L80 FinitePrefix]: Finished finitePrefix Result has 229121 conditions, 27729 events. 16940/27729 cut-off events. For 485973/486371 co-relation queries the response was YES. Maximal size of possible extension queue 2928. Compared 248460 event pairs, 3319 based on Foata normal form. 58/27422 useless extension candidates. Maximal degree in co-relation 229068. Up to 8608 conditions per place. [2020-10-16 05:14:52,330 INFO L132 encePairwiseOnDemand]: 174/184 looper letters, 231 selfloop transitions, 323 changer transitions 0/563 dead transitions. [2020-10-16 05:14:52,331 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 563 transitions, 9913 flow [2020-10-16 05:14:52,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 05:14:52,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-16 05:14:52,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3826 transitions. [2020-10-16 05:14:52,334 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.717016491754123 [2020-10-16 05:14:52,334 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3826 transitions. [2020-10-16 05:14:52,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3826 transitions. [2020-10-16 05:14:52,335 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:14:52,335 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3826 transitions. [2020-10-16 05:14:52,338 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 30 states. [2020-10-16 05:14:52,341 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 30 states. [2020-10-16 05:14:52,342 INFO L81 ComplementDD]: Finished complementDD. Result 30 states. [2020-10-16 05:14:52,342 INFO L185 Difference]: Start difference. First operand has 164 places, 374 transitions, 6684 flow. Second operand 29 states and 3826 transitions. [2020-10-16 05:14:52,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 563 transitions, 9913 flow [2020-10-16 05:15:15,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 563 transitions, 9378 flow, removed 38 selfloop flow, removed 18 redundant places. [2020-10-16 05:15:15,353 INFO L241 Difference]: Finished difference. Result has 177 places, 404 transitions, 7458 flow [2020-10-16 05:15:15,354 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=6166, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=293, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=7458, PETRI_PLACES=177, PETRI_TRANSITIONS=404} [2020-10-16 05:15:15,354 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 138 predicate places. [2020-10-16 05:15:15,354 INFO L481 AbstractCegarLoop]: Abstraction has has 177 places, 404 transitions, 7458 flow [2020-10-16 05:15:15,355 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 05:15:15,355 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:15:15,355 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:15:15,355 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-16 05:15:15,355 INFO L429 AbstractCegarLoop]: === Iteration 15 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:15:15,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:15:15,355 INFO L82 PathProgramCache]: Analyzing trace with hash 1655972161, now seen corresponding path program 4 times [2020-10-16 05:15:15,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:15:15,356 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089734660] [2020-10-16 05:15:15,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:15:15,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:15:15,414 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 05:15:15,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089734660] [2020-10-16 05:15:15,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1027786648] [2020-10-16 05:15:15,415 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 05:15:15,486 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 05:15:15,486 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 05:15:15,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 05:15:15,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 05:15:15,512 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 05:15:15,512 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 05:15:15,512 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-16 05:15:15,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064371452] [2020-10-16 05:15:15,513 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 05:15:15,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:15:15,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 05:15:15,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-16 05:15:15,514 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 184 [2020-10-16 05:15:15,515 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 404 transitions, 7458 flow. Second operand 11 states. [2020-10-16 05:15:15,515 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:15:15,515 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 184 [2020-10-16 05:15:15,515 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:15:21,078 INFO L129 PetriNetUnfolder]: 17001/27786 cut-off events. [2020-10-16 05:15:21,078 INFO L130 PetriNetUnfolder]: For 561259/561899 co-relation queries the response was YES. [2020-10-16 05:15:21,450 INFO L80 FinitePrefix]: Finished finitePrefix Result has 238877 conditions, 27786 events. 17001/27786 cut-off events. For 561259/561899 co-relation queries the response was YES. Maximal size of possible extension queue 2948. Compared 249798 event pairs, 3206 based on Foata normal form. 31/27532 useless extension candidates. Maximal degree in co-relation 238821. Up to 8649 conditions per place. [2020-10-16 05:15:21,647 INFO L132 encePairwiseOnDemand]: 174/184 looper letters, 259 selfloop transitions, 325 changer transitions 0/593 dead transitions. [2020-10-16 05:15:21,647 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 593 transitions, 10830 flow [2020-10-16 05:15:21,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 05:15:21,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-16 05:15:21,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3826 transitions. [2020-10-16 05:15:21,650 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.717016491754123 [2020-10-16 05:15:21,651 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3826 transitions. [2020-10-16 05:15:21,651 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3826 transitions. [2020-10-16 05:15:21,651 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:15:21,651 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3826 transitions. [2020-10-16 05:15:21,654 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 30 states. [2020-10-16 05:15:21,657 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 30 states. [2020-10-16 05:15:21,657 INFO L81 ComplementDD]: Finished complementDD. Result 30 states. [2020-10-16 05:15:21,658 INFO L185 Difference]: Start difference. First operand has 177 places, 404 transitions, 7458 flow. Second operand 29 states and 3826 transitions. [2020-10-16 05:15:21,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 593 transitions, 10830 flow [2020-10-16 05:15:48,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 593 transitions, 10293 flow, removed 35 selfloop flow, removed 19 redundant places. [2020-10-16 05:15:48,230 INFO L241 Difference]: Finished difference. Result has 189 places, 428 transitions, 8145 flow [2020-10-16 05:15:48,230 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=6939, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=301, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=8145, PETRI_PLACES=189, PETRI_TRANSITIONS=428} [2020-10-16 05:15:48,230 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 150 predicate places. [2020-10-16 05:15:48,231 INFO L481 AbstractCegarLoop]: Abstraction has has 189 places, 428 transitions, 8145 flow [2020-10-16 05:15:48,231 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 05:15:48,231 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:15:48,231 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:15:48,438 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2020-10-16 05:15:48,439 INFO L429 AbstractCegarLoop]: === Iteration 16 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:15:48,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:15:48,439 INFO L82 PathProgramCache]: Analyzing trace with hash -1168716135, now seen corresponding path program 5 times [2020-10-16 05:15:48,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:15:48,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143712987] [2020-10-16 05:15:48,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:15:48,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:15:48,488 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 05:15:48,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143712987] [2020-10-16 05:15:48,488 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:15:48,489 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 05:15:48,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454675131] [2020-10-16 05:15:48,489 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 05:15:48,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:15:48,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 05:15:48,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 05:15:48,491 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 184 [2020-10-16 05:15:48,492 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 428 transitions, 8145 flow. Second operand 9 states. [2020-10-16 05:15:48,492 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:15:48,492 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 184 [2020-10-16 05:15:48,492 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:15:54,207 INFO L129 PetriNetUnfolder]: 17062/27979 cut-off events. [2020-10-16 05:15:54,207 INFO L130 PetriNetUnfolder]: For 626891/627395 co-relation queries the response was YES. [2020-10-16 05:15:54,584 INFO L80 FinitePrefix]: Finished finitePrefix Result has 249197 conditions, 27979 events. 17062/27979 cut-off events. For 626891/627395 co-relation queries the response was YES. Maximal size of possible extension queue 2968. Compared 252399 event pairs, 3411 based on Foata normal form. 60/27701 useless extension candidates. Maximal degree in co-relation 249138. Up to 8700 conditions per place. [2020-10-16 05:15:54,778 INFO L132 encePairwiseOnDemand]: 174/184 looper letters, 269 selfloop transitions, 334 changer transitions 0/612 dead transitions. [2020-10-16 05:15:54,778 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 612 transitions, 11544 flow [2020-10-16 05:15:54,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 05:15:54,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-16 05:15:54,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3826 transitions. [2020-10-16 05:15:54,781 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.717016491754123 [2020-10-16 05:15:54,781 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3826 transitions. [2020-10-16 05:15:54,781 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3826 transitions. [2020-10-16 05:15:54,782 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:15:54,782 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3826 transitions. [2020-10-16 05:15:54,784 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 30 states. [2020-10-16 05:15:54,786 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 30 states. [2020-10-16 05:15:54,786 INFO L81 ComplementDD]: Finished complementDD. Result 30 states. [2020-10-16 05:15:54,786 INFO L185 Difference]: Start difference. First operand has 189 places, 428 transitions, 8145 flow. Second operand 29 states and 3826 transitions. [2020-10-16 05:15:54,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 612 transitions, 11544 flow [2020-10-16 05:16:24,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 612 transitions, 10988 flow, removed 49 selfloop flow, removed 19 redundant places. [2020-10-16 05:16:24,894 INFO L241 Difference]: Finished difference. Result has 201 places, 453 transitions, 8832 flow [2020-10-16 05:16:24,895 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=7601, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=428, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=309, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=8832, PETRI_PLACES=201, PETRI_TRANSITIONS=453} [2020-10-16 05:16:24,895 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 162 predicate places. [2020-10-16 05:16:24,895 INFO L481 AbstractCegarLoop]: Abstraction has has 201 places, 453 transitions, 8832 flow [2020-10-16 05:16:24,895 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 05:16:24,895 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:16:24,895 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:16:24,896 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-16 05:16:24,896 INFO L429 AbstractCegarLoop]: === Iteration 17 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:16:24,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:16:24,896 INFO L82 PathProgramCache]: Analyzing trace with hash -1175382375, now seen corresponding path program 6 times [2020-10-16 05:16:24,896 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:16:24,896 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815859233] [2020-10-16 05:16:24,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:16:24,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:16:24,949 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 05:16:24,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815859233] [2020-10-16 05:16:24,949 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:16:24,950 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 05:16:24,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969376073] [2020-10-16 05:16:24,950 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 05:16:24,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:16:24,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 05:16:24,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 05:16:24,952 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 184 [2020-10-16 05:16:24,953 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 453 transitions, 8832 flow. Second operand 9 states. [2020-10-16 05:16:24,953 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:16:24,953 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 184 [2020-10-16 05:16:24,953 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:16:31,137 INFO L129 PetriNetUnfolder]: 17123/28164 cut-off events. [2020-10-16 05:16:31,138 INFO L130 PetriNetUnfolder]: For 691214/691636 co-relation queries the response was YES. [2020-10-16 05:16:31,529 INFO L80 FinitePrefix]: Finished finitePrefix Result has 259730 conditions, 28164 events. 17123/28164 cut-off events. For 691214/691636 co-relation queries the response was YES. Maximal size of possible extension queue 2987. Compared 254309 event pairs, 3225 based on Foata normal form. 59/27822 useless extension candidates. Maximal degree in co-relation 259668. Up to 8726 conditions per place. [2020-10-16 05:16:31,728 INFO L132 encePairwiseOnDemand]: 174/184 looper letters, 274 selfloop transitions, 341 changer transitions 0/624 dead transitions. [2020-10-16 05:16:31,728 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 624 transitions, 12152 flow [2020-10-16 05:16:31,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 05:16:31,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-16 05:16:31,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3826 transitions. [2020-10-16 05:16:31,730 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.717016491754123 [2020-10-16 05:16:31,731 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3826 transitions. [2020-10-16 05:16:31,731 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3826 transitions. [2020-10-16 05:16:31,732 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:16:31,732 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3826 transitions. [2020-10-16 05:16:31,734 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 30 states. [2020-10-16 05:16:31,736 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 30 states. [2020-10-16 05:16:31,737 INFO L81 ComplementDD]: Finished complementDD. Result 30 states. [2020-10-16 05:16:31,737 INFO L185 Difference]: Start difference. First operand has 201 places, 453 transitions, 8832 flow. Second operand 29 states and 3826 transitions. [2020-10-16 05:16:31,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 624 transitions, 12152 flow [2020-10-16 05:17:01,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 624 transitions, 11582 flow, removed 38 selfloop flow, removed 20 redundant places. [2020-10-16 05:17:01,731 INFO L241 Difference]: Finished difference. Result has 212 places, 472 transitions, 9447 flow [2020-10-16 05:17:01,731 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=8270, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=453, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=322, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=9447, PETRI_PLACES=212, PETRI_TRANSITIONS=472} [2020-10-16 05:17:01,732 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 173 predicate places. [2020-10-16 05:17:01,732 INFO L481 AbstractCegarLoop]: Abstraction has has 212 places, 472 transitions, 9447 flow [2020-10-16 05:17:01,732 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 05:17:01,732 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:17:01,732 INFO L255 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:17:01,732 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-16 05:17:01,732 INFO L429 AbstractCegarLoop]: === Iteration 18 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:17:01,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:17:01,732 INFO L82 PathProgramCache]: Analyzing trace with hash 2107807768, now seen corresponding path program 1 times [2020-10-16 05:17:01,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:17:01,733 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204037067] [2020-10-16 05:17:01,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:17:01,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:17:01,773 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-16 05:17:01,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204037067] [2020-10-16 05:17:01,774 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [258352248] [2020-10-16 05:17:01,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 05:17:01,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:17:01,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-16 05:17:01,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 05:17:01,866 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-16 05:17:01,867 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 05:17:01,867 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-10-16 05:17:01,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498391907] [2020-10-16 05:17:01,867 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 05:17:01,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:17:01,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 05:17:01,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-16 05:17:01,870 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 184 [2020-10-16 05:17:01,871 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 472 transitions, 9447 flow. Second operand 9 states. [2020-10-16 05:17:01,871 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:17:01,871 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 184 [2020-10-16 05:17:01,871 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:17:09,211 INFO L129 PetriNetUnfolder]: 18563/30810 cut-off events. [2020-10-16 05:17:09,211 INFO L130 PetriNetUnfolder]: For 810437/811111 co-relation queries the response was YES. [2020-10-16 05:17:09,663 INFO L80 FinitePrefix]: Finished finitePrefix Result has 295198 conditions, 30810 events. 18563/30810 cut-off events. For 810437/811111 co-relation queries the response was YES. Maximal size of possible extension queue 3270. Compared 284457 event pairs, 3336 based on Foata normal form. 217/30901 useless extension candidates. Maximal degree in co-relation 295133. Up to 9791 conditions per place. [2020-10-16 05:17:09,881 INFO L132 encePairwiseOnDemand]: 175/184 looper letters, 471 selfloop transitions, 326 changer transitions 0/807 dead transitions. [2020-10-16 05:17:09,881 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 807 transitions, 17539 flow [2020-10-16 05:17:09,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 05:17:09,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 05:17:09,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1747 transitions. [2020-10-16 05:17:09,883 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7303511705685619 [2020-10-16 05:17:09,883 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1747 transitions. [2020-10-16 05:17:09,883 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1747 transitions. [2020-10-16 05:17:09,883 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:17:09,883 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1747 transitions. [2020-10-16 05:17:09,884 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 05:17:09,885 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 05:17:09,885 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 05:17:09,885 INFO L185 Difference]: Start difference. First operand has 212 places, 472 transitions, 9447 flow. Second operand 13 states and 1747 transitions. [2020-10-16 05:17:09,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 807 transitions, 17539 flow [2020-10-16 05:17:48,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 807 transitions, 16666 flow, removed 56 selfloop flow, removed 20 redundant places. [2020-10-16 05:17:48,797 INFO L241 Difference]: Finished difference. Result has 207 places, 578 transitions, 12310 flow [2020-10-16 05:17:48,798 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=8884, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=472, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=220, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=12310, PETRI_PLACES=207, PETRI_TRANSITIONS=578} [2020-10-16 05:17:48,798 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 168 predicate places. [2020-10-16 05:17:48,798 INFO L481 AbstractCegarLoop]: Abstraction has has 207 places, 578 transitions, 12310 flow [2020-10-16 05:17:48,798 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 05:17:48,798 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:17:48,798 INFO L255 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:17:48,999 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2020-10-16 05:17:48,999 INFO L429 AbstractCegarLoop]: === Iteration 19 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:17:49,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:17:49,000 INFO L82 PathProgramCache]: Analyzing trace with hash -1509505488, now seen corresponding path program 1 times [2020-10-16 05:17:49,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:17:49,001 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499133463] [2020-10-16 05:17:49,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:17:49,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:17:49,041 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 05:17:49,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499133463] [2020-10-16 05:17:49,041 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:17:49,041 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 05:17:49,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551757644] [2020-10-16 05:17:49,042 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 05:17:49,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:17:49,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 05:17:49,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 05:17:49,043 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 184 [2020-10-16 05:17:49,044 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 578 transitions, 12310 flow. Second operand 7 states. [2020-10-16 05:17:49,044 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:17:49,044 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 184 [2020-10-16 05:17:49,044 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:17:56,682 INFO L129 PetriNetUnfolder]: 19556/32996 cut-off events. [2020-10-16 05:17:56,682 INFO L130 PetriNetUnfolder]: For 967862/968290 co-relation queries the response was YES. [2020-10-16 05:17:57,183 INFO L80 FinitePrefix]: Finished finitePrefix Result has 326396 conditions, 32996 events. 19556/32996 cut-off events. For 967862/968290 co-relation queries the response was YES. Maximal size of possible extension queue 3522. Compared 311102 event pairs, 4471 based on Foata normal form. 189/32740 useless extension candidates. Maximal degree in co-relation 326328. Up to 10425 conditions per place. [2020-10-16 05:17:57,418 INFO L132 encePairwiseOnDemand]: 175/184 looper letters, 562 selfloop transitions, 348 changer transitions 0/920 dead transitions. [2020-10-16 05:17:57,418 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 920 transitions, 20795 flow [2020-10-16 05:17:57,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 05:17:57,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 05:17:57,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1735 transitions. [2020-10-16 05:17:57,419 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7253344481605352 [2020-10-16 05:17:57,420 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1735 transitions. [2020-10-16 05:17:57,420 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1735 transitions. [2020-10-16 05:17:57,420 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:17:57,420 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1735 transitions. [2020-10-16 05:17:57,421 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 05:17:57,422 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 05:17:57,422 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 05:17:57,422 INFO L185 Difference]: Start difference. First operand has 207 places, 578 transitions, 12310 flow. Second operand 13 states and 1735 transitions. [2020-10-16 05:17:57,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 920 transitions, 20795 flow [2020-10-16 05:18:47,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 920 transitions, 20413 flow, removed 158 selfloop flow, removed 3 redundant places. [2020-10-16 05:18:47,726 INFO L241 Difference]: Finished difference. Result has 219 places, 688 transitions, 15627 flow [2020-10-16 05:18:47,726 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=11990, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=578, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=238, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=15627, PETRI_PLACES=219, PETRI_TRANSITIONS=688} [2020-10-16 05:18:47,727 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 180 predicate places. [2020-10-16 05:18:47,727 INFO L481 AbstractCegarLoop]: Abstraction has has 219 places, 688 transitions, 15627 flow [2020-10-16 05:18:47,727 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 05:18:47,727 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:18:47,727 INFO L255 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:18:47,727 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-16 05:18:47,727 INFO L429 AbstractCegarLoop]: === Iteration 20 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:18:47,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:18:47,728 INFO L82 PathProgramCache]: Analyzing trace with hash 154202698, now seen corresponding path program 1 times [2020-10-16 05:18:47,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:18:47,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726732832] [2020-10-16 05:18:47,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:18:47,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:18:47,776 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-16 05:18:47,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726732832] [2020-10-16 05:18:47,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1713130465] [2020-10-16 05:18:47,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 05:18:47,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:18:47,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-16 05:18:47,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 05:18:47,870 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-16 05:18:47,871 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 05:18:47,871 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-10-16 05:18:47,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242078652] [2020-10-16 05:18:47,871 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 05:18:47,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:18:47,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 05:18:47,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-16 05:18:47,873 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 184 [2020-10-16 05:18:47,873 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 688 transitions, 15627 flow. Second operand 9 states. [2020-10-16 05:18:47,874 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:18:47,874 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 184 [2020-10-16 05:18:47,874 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:18:57,599 INFO L129 PetriNetUnfolder]: 20416/35053 cut-off events. [2020-10-16 05:18:57,600 INFO L130 PetriNetUnfolder]: For 1105509/1105539 co-relation queries the response was YES. [2020-10-16 05:18:58,123 INFO L80 FinitePrefix]: Finished finitePrefix Result has 359767 conditions, 35053 events. 20416/35053 cut-off events. For 1105509/1105539 co-relation queries the response was YES. Maximal size of possible extension queue 3757. Compared 340295 event pairs, 4102 based on Foata normal form. 150/34638 useless extension candidates. Maximal degree in co-relation 359696. Up to 10783 conditions per place. [2020-10-16 05:18:58,370 INFO L132 encePairwiseOnDemand]: 175/184 looper letters, 650 selfloop transitions, 377 changer transitions 0/1037 dead transitions. [2020-10-16 05:18:58,370 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 1037 transitions, 24751 flow [2020-10-16 05:18:58,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 05:18:58,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 05:18:58,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1748 transitions. [2020-10-16 05:18:58,372 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7307692307692307 [2020-10-16 05:18:58,372 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1748 transitions. [2020-10-16 05:18:58,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1748 transitions. [2020-10-16 05:18:58,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:18:58,372 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1748 transitions. [2020-10-16 05:18:58,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 05:18:58,374 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 05:18:58,374 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 05:18:58,374 INFO L185 Difference]: Start difference. First operand has 219 places, 688 transitions, 15627 flow. Second operand 13 states and 1748 transitions. [2020-10-16 05:18:58,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 1037 transitions, 24751 flow [2020-10-16 05:20:12,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 1037 transitions, 24410 flow, removed 166 selfloop flow, removed 1 redundant places. [2020-10-16 05:20:12,787 INFO L241 Difference]: Finished difference. Result has 233 places, 805 transitions, 19305 flow [2020-10-16 05:20:12,788 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=15348, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=688, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=260, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=387, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=19305, PETRI_PLACES=233, PETRI_TRANSITIONS=805} [2020-10-16 05:20:12,788 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 194 predicate places. [2020-10-16 05:20:12,788 INFO L481 AbstractCegarLoop]: Abstraction has has 233 places, 805 transitions, 19305 flow [2020-10-16 05:20:12,789 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 05:20:12,789 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:20:12,789 INFO L255 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:20:12,994 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 05:20:12,995 INFO L429 AbstractCegarLoop]: === Iteration 21 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:20:12,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:20:12,995 INFO L82 PathProgramCache]: Analyzing trace with hash -1508285328, now seen corresponding path program 2 times [2020-10-16 05:20:12,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:20:12,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156460655] [2020-10-16 05:20:12,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:20:13,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:20:13,035 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 05:20:13,036 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156460655] [2020-10-16 05:20:13,036 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:20:13,038 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 05:20:13,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333637607] [2020-10-16 05:20:13,038 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 05:20:13,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:20:13,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 05:20:13,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 05:20:13,042 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 184 [2020-10-16 05:20:13,042 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 805 transitions, 19305 flow. Second operand 7 states. [2020-10-16 05:20:13,043 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:20:13,043 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 184 [2020-10-16 05:20:13,043 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:20:23,304 INFO L129 PetriNetUnfolder]: 20963/35844 cut-off events. [2020-10-16 05:20:23,304 INFO L130 PetriNetUnfolder]: For 1247511/1247939 co-relation queries the response was YES. [2020-10-16 05:20:23,964 INFO L80 FinitePrefix]: Finished finitePrefix Result has 384149 conditions, 35844 events. 20963/35844 cut-off events. For 1247511/1247939 co-relation queries the response was YES. Maximal size of possible extension queue 3877. Compared 348807 event pairs, 4043 based on Foata normal form. 131/35646 useless extension candidates. Maximal degree in co-relation 384074. Up to 10947 conditions per place. [2020-10-16 05:20:24,241 INFO L132 encePairwiseOnDemand]: 175/184 looper letters, 690 selfloop transitions, 398 changer transitions 0/1098 dead transitions. [2020-10-16 05:20:24,241 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 1098 transitions, 26903 flow [2020-10-16 05:20:24,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 05:20:24,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 05:20:24,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1735 transitions. [2020-10-16 05:20:24,243 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7253344481605352 [2020-10-16 05:20:24,243 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1735 transitions. [2020-10-16 05:20:24,243 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1735 transitions. [2020-10-16 05:20:24,243 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:20:24,243 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1735 transitions. [2020-10-16 05:20:24,244 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 05:20:24,245 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 05:20:24,245 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 05:20:24,245 INFO L185 Difference]: Start difference. First operand has 233 places, 805 transitions, 19305 flow. Second operand 13 states and 1735 transitions. [2020-10-16 05:20:24,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 1098 transitions, 26903 flow [2020-10-16 05:21:54,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 1098 transitions, 26546 flow, removed 174 selfloop flow, removed 1 redundant places. [2020-10-16 05:21:54,652 INFO L241 Difference]: Finished difference. Result has 247 places, 867 transitions, 21483 flow [2020-10-16 05:21:54,653 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=19014, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=805, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=336, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=450, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=21483, PETRI_PLACES=247, PETRI_TRANSITIONS=867} [2020-10-16 05:21:54,653 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 208 predicate places. [2020-10-16 05:21:54,653 INFO L481 AbstractCegarLoop]: Abstraction has has 247 places, 867 transitions, 21483 flow [2020-10-16 05:21:54,653 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 05:21:54,653 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:21:54,653 INFO L255 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:21:54,654 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-16 05:21:54,654 INFO L429 AbstractCegarLoop]: === Iteration 22 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:21:54,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:21:54,654 INFO L82 PathProgramCache]: Analyzing trace with hash -1508278384, now seen corresponding path program 2 times [2020-10-16 05:21:54,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:21:54,654 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90276952] [2020-10-16 05:21:54,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:21:54,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:21:54,693 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 05:21:54,693 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90276952] [2020-10-16 05:21:54,693 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:21:54,693 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 05:21:54,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704491699] [2020-10-16 05:21:54,694 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 05:21:54,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:21:54,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 05:21:54,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 05:21:54,697 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 184 [2020-10-16 05:21:54,698 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 867 transitions, 21483 flow. Second operand 7 states. [2020-10-16 05:21:54,698 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:21:54,698 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 184 [2020-10-16 05:21:54,698 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:22:06,851 INFO L129 PetriNetUnfolder]: 21640/37526 cut-off events. [2020-10-16 05:22:06,852 INFO L130 PetriNetUnfolder]: For 1438392/1439060 co-relation queries the response was YES. [2020-10-16 05:22:07,546 INFO L80 FinitePrefix]: Finished finitePrefix Result has 411573 conditions, 37526 events. 21640/37526 cut-off events. For 1438392/1439060 co-relation queries the response was YES. Maximal size of possible extension queue 4092. Compared 371276 event pairs, 5107 based on Foata normal form. 181/36980 useless extension candidates. Maximal degree in co-relation 411494. Up to 11169 conditions per place. [2020-10-16 05:22:07,833 INFO L132 encePairwiseOnDemand]: 175/184 looper letters, 707 selfloop transitions, 431 changer transitions 0/1148 dead transitions. [2020-10-16 05:22:07,833 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 1148 transitions, 29104 flow [2020-10-16 05:22:07,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 05:22:07,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 05:22:07,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1747 transitions. [2020-10-16 05:22:07,835 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7303511705685619 [2020-10-16 05:22:07,835 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1747 transitions. [2020-10-16 05:22:07,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1747 transitions. [2020-10-16 05:22:07,835 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:22:07,835 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1747 transitions. [2020-10-16 05:22:07,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 05:22:07,837 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 05:22:07,837 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 05:22:07,837 INFO L185 Difference]: Start difference. First operand has 247 places, 867 transitions, 21483 flow. Second operand 13 states and 1747 transitions. [2020-10-16 05:22:07,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 1148 transitions, 29104 flow [2020-10-16 05:23:53,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 1148 transitions, 28203 flow, removed 116 selfloop flow, removed 7 redundant places. [2020-10-16 05:23:53,165 INFO L241 Difference]: Finished difference. Result has 255 places, 939 transitions, 23525 flow [2020-10-16 05:23:53,166 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=20735, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=867, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=359, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=487, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=23525, PETRI_PLACES=255, PETRI_TRANSITIONS=939} [2020-10-16 05:23:53,166 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 216 predicate places. [2020-10-16 05:23:53,166 INFO L481 AbstractCegarLoop]: Abstraction has has 255 places, 939 transitions, 23525 flow [2020-10-16 05:23:53,167 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 05:23:53,167 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:23:53,167 INFO L255 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:23:53,167 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-16 05:23:53,167 INFO L429 AbstractCegarLoop]: === Iteration 23 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:23:53,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:23:53,167 INFO L82 PathProgramCache]: Analyzing trace with hash -1508270882, now seen corresponding path program 2 times [2020-10-16 05:23:53,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:23:53,168 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398330462] [2020-10-16 05:23:53,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:23:53,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:23:53,199 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 05:23:53,199 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398330462] [2020-10-16 05:23:53,199 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:23:53,199 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 05:23:53,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954860027] [2020-10-16 05:23:53,200 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 05:23:53,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:23:53,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 05:23:53,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 05:23:53,201 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 184 [2020-10-16 05:23:53,201 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 939 transitions, 23525 flow. Second operand 7 states. [2020-10-16 05:23:53,201 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:23:53,202 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 184 [2020-10-16 05:23:53,202 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:24:06,043 INFO L129 PetriNetUnfolder]: 22448/38961 cut-off events. [2020-10-16 05:24:06,043 INFO L130 PetriNetUnfolder]: For 1540535/1540565 co-relation queries the response was YES. [2020-10-16 05:24:07,957 INFO L80 FinitePrefix]: Finished finitePrefix Result has 436981 conditions, 38961 events. 22448/38961 cut-off events. For 1540535/1540565 co-relation queries the response was YES. Maximal size of possible extension queue 4229. Compared 387592 event pairs, 4464 based on Foata normal form. 142/38543 useless extension candidates. Maximal degree in co-relation 436899. Up to 11783 conditions per place. [2020-10-16 05:24:08,250 INFO L132 encePairwiseOnDemand]: 175/184 looper letters, 730 selfloop transitions, 476 changer transitions 0/1216 dead transitions. [2020-10-16 05:24:08,250 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 1216 transitions, 31250 flow [2020-10-16 05:24:08,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 05:24:08,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 05:24:08,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1748 transitions. [2020-10-16 05:24:08,252 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7307692307692307 [2020-10-16 05:24:08,252 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1748 transitions. [2020-10-16 05:24:08,252 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1748 transitions. [2020-10-16 05:24:08,252 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:24:08,252 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1748 transitions. [2020-10-16 05:24:08,253 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 05:24:08,254 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 05:24:08,254 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 05:24:08,254 INFO L185 Difference]: Start difference. First operand has 255 places, 939 transitions, 23525 flow. Second operand 13 states and 1748 transitions. [2020-10-16 05:24:08,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 1216 transitions, 31250 flow [2020-10-16 05:26:27,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 1216 transitions, 30616 flow, removed 141 selfloop flow, removed 7 redundant places. [2020-10-16 05:26:28,001 INFO L241 Difference]: Finished difference. Result has 263 places, 1025 transitions, 26293 flow [2020-10-16 05:26:28,002 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=23020, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=939, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=390, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=526, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=26293, PETRI_PLACES=263, PETRI_TRANSITIONS=1025} [2020-10-16 05:26:28,003 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 224 predicate places. [2020-10-16 05:26:28,003 INFO L481 AbstractCegarLoop]: Abstraction has has 263 places, 1025 transitions, 26293 flow [2020-10-16 05:26:28,003 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 05:26:28,003 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:26:28,003 INFO L255 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:26:28,003 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-10-16 05:26:28,003 INFO L429 AbstractCegarLoop]: === Iteration 24 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:26:28,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:26:28,003 INFO L82 PathProgramCache]: Analyzing trace with hash -1852153529, now seen corresponding path program 1 times [2020-10-16 05:26:28,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:26:28,004 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040123418] [2020-10-16 05:26:28,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:26:28,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:26:28,028 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-16 05:26:28,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040123418] [2020-10-16 05:26:28,029 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:26:28,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:26:28,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838875162] [2020-10-16 05:26:28,029 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 05:26:28,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:26:28,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 05:26:28,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 05:26:28,031 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 184 [2020-10-16 05:26:28,031 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 1025 transitions, 26293 flow. Second operand 5 states. [2020-10-16 05:26:28,031 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:26:28,032 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 184 [2020-10-16 05:26:28,032 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2020-10-16 05:26:43,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 05:26:43,042 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2020-10-16 05:26:43,042 WARN L546 AbstractCegarLoop]: Verification canceled [2020-10-16 05:26:43,045 WARN L235 ceAbstractionStarter]: Timeout [2020-10-16 05:26:43,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 05:26:43 BasicIcfg [2020-10-16 05:26:43,045 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 05:26:43,047 INFO L168 Benchmark]: Toolchain (without parser) took 840840.51 ms. Allocated memory was 250.6 MB in the beginning and 5.0 GB in the end (delta: 4.7 GB). Free memory was 205.9 MB in the beginning and 3.5 GB in the end (delta: -3.3 GB). Peak memory consumption was 4.1 GB. Max. memory is 14.2 GB. [2020-10-16 05:26:43,047 INFO L168 Benchmark]: CDTParser took 0.47 ms. Allocated memory is still 250.6 MB. Free memory is still 227.0 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 05:26:43,047 INFO L168 Benchmark]: CACSL2BoogieTranslator took 629.42 ms. Allocated memory was 250.6 MB in the beginning and 313.0 MB in the end (delta: 62.4 MB). Free memory was 205.9 MB in the beginning and 267.0 MB in the end (delta: -61.0 MB). Peak memory consumption was 27.0 MB. Max. memory is 14.2 GB. [2020-10-16 05:26:43,048 INFO L168 Benchmark]: Boogie Procedure Inliner took 71.88 ms. Allocated memory is still 313.0 MB. Free memory was 267.0 MB in the beginning and 263.6 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 14.2 GB. [2020-10-16 05:26:43,048 INFO L168 Benchmark]: Boogie Preprocessor took 24.55 ms. Allocated memory is still 313.0 MB. Free memory was 263.6 MB in the beginning and 261.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 05:26:43,048 INFO L168 Benchmark]: RCFGBuilder took 387.92 ms. Allocated memory is still 313.0 MB. Free memory was 261.1 MB in the beginning and 241.8 MB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 14.2 GB. [2020-10-16 05:26:43,049 INFO L168 Benchmark]: TraceAbstraction took 839721.76 ms. Allocated memory was 313.0 MB in the beginning and 5.0 GB in the end (delta: 4.7 GB). Free memory was 241.8 MB in the beginning and 3.5 GB in the end (delta: -3.2 GB). Peak memory consumption was 4.1 GB. Max. memory is 14.2 GB. [2020-10-16 05:26:43,051 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.47 ms. Allocated memory is still 250.6 MB. Free memory is still 227.0 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 629.42 ms. Allocated memory was 250.6 MB in the beginning and 313.0 MB in the end (delta: 62.4 MB). Free memory was 205.9 MB in the beginning and 267.0 MB in the end (delta: -61.0 MB). Peak memory consumption was 27.0 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 71.88 ms. Allocated memory is still 313.0 MB. Free memory was 267.0 MB in the beginning and 263.6 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 24.55 ms. Allocated memory is still 313.0 MB. Free memory was 263.6 MB in the beginning and 261.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 387.92 ms. Allocated memory is still 313.0 MB. Free memory was 261.1 MB in the beginning and 241.8 MB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 14.2 GB. * TraceAbstraction took 839721.76 ms. Allocated memory was 313.0 MB in the beginning and 5.0 GB in the end (delta: 4.7 GB). Free memory was 241.8 MB in the beginning and 3.5 GB in the end (delta: -3.2 GB). Peak memory consumption was 4.1 GB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 484 VarBasedMoverChecksPositive, 4 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 4 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 3 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.1s, 54 PlacesBefore, 17 PlacesAfterwards, 50 TransitionsBefore, 11 TransitionsAfterwards, 692 CoEnabledTransitionPairs, 5 FixpointIterations, 13 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 2 ChoiceCompositions, 47 TotalNumberOfCompositions, 670 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 741 VarBasedMoverChecksPositive, 9 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 9 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 31 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 0.9s, 63 PlacesBefore, 24 PlacesAfterwards, 57 TransitionsBefore, 16 TransitionsAfterwards, 1108 CoEnabledTransitionPairs, 4 FixpointIterations, 13 TrivialSequentialCompositions, 29 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 2 ChoiceCompositions, 49 TotalNumberOfCompositions, 1246 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1057 VarBasedMoverChecksPositive, 19 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 19 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 45 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.0s, 72 PlacesBefore, 29 PlacesAfterwards, 64 TransitionsBefore, 19 TransitionsAfterwards, 1608 CoEnabledTransitionPairs, 5 FixpointIterations, 13 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 2 ChoiceCompositions, 52 TotalNumberOfCompositions, 2267 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1336 VarBasedMoverChecksPositive, 22 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 22 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 60 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 0.9s, 81 PlacesBefore, 34 PlacesAfterwards, 71 TransitionsBefore, 22 TransitionsAfterwards, 2192 CoEnabledTransitionPairs, 4 FixpointIterations, 13 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 2 ChoiceCompositions, 55 TotalNumberOfCompositions, 2992 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1867 VarBasedMoverChecksPositive, 24 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 24 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 112 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.1s, 90 PlacesBefore, 39 PlacesAfterwards, 78 TransitionsBefore, 25 TransitionsAfterwards, 2860 CoEnabledTransitionPairs, 4 FixpointIterations, 13 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 2 ChoiceCompositions, 61 TotalNumberOfCompositions, 3913 MoverChecksTotal - TimeoutResultAtElement [Line: 679]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 679). Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (5states, 128/184 universal loopers) in iteration 24,while PetriNetUnfolder was constructing finite prefix that currently has 363196 conditions, 38198 events (23406/38197 cut-off events. For 2104413/2108351 co-relation queries the response was YES. Maximal size of possible extension queue 6875. Compared 388440 event pairs, 7372 based on Foata normal form. 897/45545 useless extension candidates. Maximal degree in co-relation 363111. Up to 24452 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 49 locations, 1 error locations. Started 5 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 839.4s, OverallIterations: 56, TraceHistogramMax: 5, AutomataDifference: 826.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.4s, HoareTripleCheckerStatistics: 844 SDtfs, 4116 SDslu, 1191 SDs, 0 SdLazy, 7147 SolverSat, 659 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 941 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 715 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3446 ImplicationChecksByTransitivity, 5.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26293occurred in iteration=23, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 1131 NumberOfCodeBlocks, 1123 NumberOfCodeBlocksAsserted, 73 NumberOfCheckSat, 1006 ConstructedInterpolants, 0 QuantifiedInterpolants, 51948 SizeOfPredicates, 66 NumberOfNonLiveVariables, 1497 ConjunctsInSsa, 94 ConjunctsInUnsatCore, 66 InterpolantComputations, 38 PerfectInterpolantSequences, 380/494 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 could not prove your program: Timeout Completed graceful shutdown