/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.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe011_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-16 01:39:04,998 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 01:39:05,000 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 01:39:05,024 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 01:39:05,024 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 01:39:05,025 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 01:39:05,026 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 01:39:05,028 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 01:39:05,030 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 01:39:05,030 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 01:39:05,031 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 01:39:05,032 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 01:39:05,033 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 01:39:05,034 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 01:39:05,035 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 01:39:05,036 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 01:39:05,036 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 01:39:05,037 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 01:39:05,039 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 01:39:05,041 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 01:39:05,043 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 01:39:05,044 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 01:39:05,045 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 01:39:05,046 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 01:39:05,050 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-16 01:39:05,053 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 01:39:05,054 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 01:39:05,055 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 01:39:05,056 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 01:39:05,057 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 01:39:05,057 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 01:39:05,058 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 01:39:05,058 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 01:39:05,058 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 01:39:05,059 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 01:39:05,060 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 01:39:05,061 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2020-10-16 01:39:05,083 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 01:39:05,083 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 01:39:05,085 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 01:39:05,085 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 01:39:05,085 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 01:39:05,085 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 01:39:05,086 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 01:39:05,086 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 01:39:05,086 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 01:39:05,086 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 01:39:05,086 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 01:39:05,087 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 01:39:05,087 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 01:39:05,087 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 01:39:05,087 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 01:39:05,087 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 01:39:05,088 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 01:39:05,088 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 01:39:05,088 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 01:39:05,088 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 01:39:05,088 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 01:39:05,089 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 01:39:05,089 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 01:39:05,089 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 01:39:05,089 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 01:39:05,089 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 01:39:05,090 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 01:39:05,090 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-16 01:39:05,090 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 01:39:05,380 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 01:39:05,397 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 01:39:05,402 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 01:39:05,403 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 01:39:05,403 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 01:39:05,404 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe011_tso.oepc.i [2020-10-16 01:39:05,476 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e80fbe1c7/fe041d0a4abd49b8bbb717d18bcb729e/FLAGf4d619aea [2020-10-16 01:39:06,057 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 01:39:06,058 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe011_tso.oepc.i [2020-10-16 01:39:06,071 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e80fbe1c7/fe041d0a4abd49b8bbb717d18bcb729e/FLAGf4d619aea [2020-10-16 01:39:06,319 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e80fbe1c7/fe041d0a4abd49b8bbb717d18bcb729e [2020-10-16 01:39:06,327 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 01:39:06,329 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 01:39:06,331 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 01:39:06,331 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 01:39:06,334 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 01:39:06,335 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:39:06" (1/1) ... [2020-10-16 01:39:06,338 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e86d97c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:39:06, skipping insertion in model container [2020-10-16 01:39:06,339 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:39:06" (1/1) ... [2020-10-16 01:39:06,347 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 01:39:06,409 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 01:39:06,884 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 01:39:06,897 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 01:39:06,935 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 01:39:07,010 INFO L208 MainTranslator]: Completed translation [2020-10-16 01:39:07,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:39:07 WrapperNode [2020-10-16 01:39:07,011 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 01:39:07,012 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 01:39:07,012 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 01:39:07,012 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 01:39:07,021 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:39:07" (1/1) ... [2020-10-16 01:39:07,038 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:39:07" (1/1) ... [2020-10-16 01:39:07,062 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 01:39:07,063 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 01:39:07,063 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 01:39:07,063 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 01:39:07,071 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:39:07" (1/1) ... [2020-10-16 01:39:07,071 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:39:07" (1/1) ... [2020-10-16 01:39:07,074 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:39:07" (1/1) ... [2020-10-16 01:39:07,075 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:39:07" (1/1) ... [2020-10-16 01:39:07,081 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:39:07" (1/1) ... [2020-10-16 01:39:07,083 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:39:07" (1/1) ... [2020-10-16 01:39:07,085 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:39:07" (1/1) ... [2020-10-16 01:39:07,089 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 01:39:07,089 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 01:39:07,090 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 01:39:07,090 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 01:39:07,091 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:39:07" (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 01:39:07,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 01:39:07,164 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 01:39:07,164 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 01:39:07,164 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 01:39:07,164 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 01:39:07,165 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 01:39:07,165 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 01:39:07,165 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 01:39:07,165 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 01:39:07,165 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 01:39:07,165 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 01:39:07,166 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 01:39:07,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 01:39:07,168 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 01:39:07,484 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 01:39:07,484 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 01:39:07,487 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:39:07 BoogieIcfgContainer [2020-10-16 01:39:07,487 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 01:39:07,488 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 01:39:07,488 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 01:39:07,492 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 01:39:07,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 01:39:06" (1/3) ... [2020-10-16 01:39:07,494 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@597f5749 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:39:07, skipping insertion in model container [2020-10-16 01:39:07,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:39:07" (2/3) ... [2020-10-16 01:39:07,494 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@597f5749 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:39:07, skipping insertion in model container [2020-10-16 01:39:07,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:39:07" (3/3) ... [2020-10-16 01:39:07,496 INFO L111 eAbstractionObserver]: Analyzing ICFG safe011_tso.oepc.i [2020-10-16 01:39:07,509 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 01:39:07,517 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 01:39:07,521 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 01:39:07,574 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:07,574 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:07,574 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:07,575 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:07,575 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:07,576 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:07,576 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:07,576 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:07,577 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:07,577 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:07,577 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:07,578 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:07,578 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:07,578 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:07,579 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:07,579 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:07,585 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:07,586 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:07,590 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:07,593 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:07,593 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:07,594 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:07,599 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:07,600 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:07,603 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:07,604 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:07,606 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:07,606 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:07,607 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:07,607 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:39:07,625 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 01:39:07,646 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 01:39:07,646 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 01:39:07,646 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 01:39:07,646 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 01:39:07,647 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 01:39:07,647 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 01:39:07,647 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 01:39:07,647 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 01:39:07,660 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-10-16 01:39:07,710 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-10-16 01:39:07,711 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:39:07,719 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-16 01:39:07,720 INFO L82 GeneralOperation]: Start removeDead. Operand has 77 places, 69 transitions, 153 flow [2020-10-16 01:39:07,726 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 64 places, 55 transitions, 119 flow [2020-10-16 01:39:07,728 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 01:39:07,730 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 64 places, 55 transitions, 119 flow [2020-10-16 01:39:07,732 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 64 places, 55 transitions, 119 flow [2020-10-16 01:39:07,733 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 64 places, 55 transitions, 119 flow [2020-10-16 01:39:07,753 INFO L129 PetriNetUnfolder]: 1/55 cut-off events. [2020-10-16 01:39:07,754 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:39:07,754 INFO L80 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 55 events. 1/55 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2020-10-16 01:39:07,756 INFO L117 LiptonReduction]: Number of co-enabled transitions 864 [2020-10-16 01:39:09,178 INFO L132 LiptonReduction]: Checked pairs total: 1700 [2020-10-16 01:39:09,178 INFO L134 LiptonReduction]: Total number of compositions: 43 [2020-10-16 01:39:09,181 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1455 [2020-10-16 01:39:09,189 INFO L129 PetriNetUnfolder]: 0/13 cut-off events. [2020-10-16 01:39:09,189 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:39:09,190 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:39:09,191 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:39:09,191 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:39:09,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:39:09,197 INFO L82 PathProgramCache]: Analyzing trace with hash -304121032, now seen corresponding path program 1 times [2020-10-16 01:39:09,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:39:09,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113103163] [2020-10-16 01:39:09,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:39:09,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:39:09,388 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 01:39:09,389 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113103163] [2020-10-16 01:39:09,389 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:39:09,390 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 01:39:09,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195386281] [2020-10-16 01:39:09,401 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-16 01:39:09,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:39:09,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-16 01:39:09,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-16 01:39:09,420 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 112 [2020-10-16 01:39:09,422 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 18 transitions, 45 flow. Second operand 2 states. [2020-10-16 01:39:09,423 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:39:09,423 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 112 [2020-10-16 01:39:09,424 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:39:09,435 INFO L129 PetriNetUnfolder]: 0/17 cut-off events. [2020-10-16 01:39:09,435 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:39:09,435 INFO L80 FinitePrefix]: Finished finitePrefix Result has 28 conditions, 17 events. 0/17 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 15 event pairs, 0 based on Foata normal form. 1/18 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2020-10-16 01:39:09,437 INFO L132 encePairwiseOnDemand]: 111/112 looper letters, 0 selfloop transitions, 0 changer transitions 0/17 dead transitions. [2020-10-16 01:39:09,437 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 17 transitions, 43 flow [2020-10-16 01:39:09,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-16 01:39:09,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-10-16 01:39:09,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 213 transitions. [2020-10-16 01:39:09,453 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.9508928571428571 [2020-10-16 01:39:09,453 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 213 transitions. [2020-10-16 01:39:09,454 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 213 transitions. [2020-10-16 01:39:09,456 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:39:09,459 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 213 transitions. [2020-10-16 01:39:09,462 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 3 states. [2020-10-16 01:39:09,468 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 3 states. [2020-10-16 01:39:09,468 INFO L81 ComplementDD]: Finished complementDD. Result 3 states. [2020-10-16 01:39:09,470 INFO L185 Difference]: Start difference. First operand has 27 places, 18 transitions, 45 flow. Second operand 2 states and 213 transitions. [2020-10-16 01:39:09,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 17 transitions, 43 flow [2020-10-16 01:39:09,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 17 transitions, 40 flow, removed 0 selfloop flow, removed 3 redundant places. [2020-10-16 01:39:09,475 INFO L241 Difference]: Finished difference. Result has 25 places, 17 transitions, 40 flow [2020-10-16 01:39:09,478 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=40, PETRI_PLACES=25, PETRI_TRANSITIONS=17} [2020-10-16 01:39:09,479 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, -2 predicate places. [2020-10-16 01:39:09,479 INFO L481 AbstractCegarLoop]: Abstraction has has 25 places, 17 transitions, 40 flow [2020-10-16 01:39:09,480 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-16 01:39:09,480 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:39:09,480 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:39:09,480 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 01:39:09,481 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:39:09,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:39:09,481 INFO L82 PathProgramCache]: Analyzing trace with hash -837817873, now seen corresponding path program 1 times [2020-10-16 01:39:09,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:39:09,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825577522] [2020-10-16 01:39:09,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:39:09,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:39:09,567 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 01:39:09,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825577522] [2020-10-16 01:39:09,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:39:09,568 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 01:39:09,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243130026] [2020-10-16 01:39:09,570 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:39:09,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:39:09,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:39:09,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:39:09,577 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 112 [2020-10-16 01:39:09,578 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 17 transitions, 40 flow. Second operand 3 states. [2020-10-16 01:39:09,580 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:39:09,580 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 112 [2020-10-16 01:39:09,580 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:39:09,600 INFO L129 PetriNetUnfolder]: 3/25 cut-off events. [2020-10-16 01:39:09,601 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:39:09,601 INFO L80 FinitePrefix]: Finished finitePrefix Result has 44 conditions, 25 events. 3/25 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 32 event pairs, 1 based on Foata normal form. 1/26 useless extension candidates. Maximal degree in co-relation 41. Up to 10 conditions per place. [2020-10-16 01:39:09,602 INFO L132 encePairwiseOnDemand]: 108/112 looper letters, 3 selfloop transitions, 3 changer transitions 0/19 dead transitions. [2020-10-16 01:39:09,602 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 19 transitions, 56 flow [2020-10-16 01:39:09,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:39:09,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:39:09,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 292 transitions. [2020-10-16 01:39:09,606 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8690476190476191 [2020-10-16 01:39:09,606 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 292 transitions. [2020-10-16 01:39:09,607 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 292 transitions. [2020-10-16 01:39:09,607 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:39:09,608 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 292 transitions. [2020-10-16 01:39:09,609 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:39:09,611 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:39:09,612 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:39:09,612 INFO L185 Difference]: Start difference. First operand has 25 places, 17 transitions, 40 flow. Second operand 3 states and 292 transitions. [2020-10-16 01:39:09,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 19 transitions, 56 flow [2020-10-16 01:39:09,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 19 transitions, 56 flow, removed 0 selfloop flow, removed 0 redundant places. [2020-10-16 01:39:09,614 INFO L241 Difference]: Finished difference. Result has 28 places, 19 transitions, 59 flow [2020-10-16 01:39:09,615 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=59, PETRI_PLACES=28, PETRI_TRANSITIONS=19} [2020-10-16 01:39:09,615 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 1 predicate places. [2020-10-16 01:39:09,615 INFO L481 AbstractCegarLoop]: Abstraction has has 28 places, 19 transitions, 59 flow [2020-10-16 01:39:09,616 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:39:09,616 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:39:09,616 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:39:09,616 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 01:39:09,617 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:39:09,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:39:09,617 INFO L82 PathProgramCache]: Analyzing trace with hash -202550729, now seen corresponding path program 1 times [2020-10-16 01:39:09,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:39:09,618 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955618463] [2020-10-16 01:39:09,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:39:09,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:39:09,693 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 01:39:09,694 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955618463] [2020-10-16 01:39:09,711 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:39:09,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 01:39:09,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721793824] [2020-10-16 01:39:09,712 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:39:09,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:39:09,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:39:09,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:39:09,717 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 112 [2020-10-16 01:39:09,717 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 19 transitions, 59 flow. Second operand 3 states. [2020-10-16 01:39:09,717 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:39:09,718 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 112 [2020-10-16 01:39:09,718 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:39:09,738 INFO L129 PetriNetUnfolder]: 3/24 cut-off events. [2020-10-16 01:39:09,738 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-10-16 01:39:09,739 INFO L80 FinitePrefix]: Finished finitePrefix Result has 52 conditions, 24 events. 3/24 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 32 event pairs, 1 based on Foata normal form. 1/25 useless extension candidates. Maximal degree in co-relation 47. Up to 10 conditions per place. [2020-10-16 01:39:09,739 INFO L132 encePairwiseOnDemand]: 109/112 looper letters, 1 selfloop transitions, 2 changer transitions 0/19 dead transitions. [2020-10-16 01:39:09,739 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 19 transitions, 65 flow [2020-10-16 01:39:09,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:39:09,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:39:09,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 286 transitions. [2020-10-16 01:39:09,742 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8511904761904762 [2020-10-16 01:39:09,743 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 286 transitions. [2020-10-16 01:39:09,743 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 286 transitions. [2020-10-16 01:39:09,743 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:39:09,743 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 286 transitions. [2020-10-16 01:39:09,744 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:39:09,746 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:39:09,746 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:39:09,746 INFO L185 Difference]: Start difference. First operand has 28 places, 19 transitions, 59 flow. Second operand 3 states and 286 transitions. [2020-10-16 01:39:09,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 19 transitions, 65 flow [2020-10-16 01:39:09,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 19 transitions, 62 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 01:39:09,748 INFO L241 Difference]: Finished difference. Result has 30 places, 19 transitions, 64 flow [2020-10-16 01:39:09,748 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=64, PETRI_PLACES=30, PETRI_TRANSITIONS=19} [2020-10-16 01:39:09,749 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 3 predicate places. [2020-10-16 01:39:09,749 INFO L481 AbstractCegarLoop]: Abstraction has has 30 places, 19 transitions, 64 flow [2020-10-16 01:39:09,749 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:39:09,749 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:39:09,749 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:39:09,749 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 01:39:09,750 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:39:09,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:39:09,750 INFO L82 PathProgramCache]: Analyzing trace with hash -1984110550, now seen corresponding path program 1 times [2020-10-16 01:39:09,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:39:09,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26949659] [2020-10-16 01:39:09,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:39:09,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:39:09,804 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 01:39:09,805 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26949659] [2020-10-16 01:39:09,805 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:39:09,805 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 01:39:09,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499060413] [2020-10-16 01:39:09,806 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:39:09,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:39:09,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:39:09,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:39:09,808 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 112 [2020-10-16 01:39:09,808 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 19 transitions, 64 flow. Second operand 3 states. [2020-10-16 01:39:09,809 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:39:09,809 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 112 [2020-10-16 01:39:09,809 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:39:09,826 INFO L129 PetriNetUnfolder]: 9/41 cut-off events. [2020-10-16 01:39:09,826 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-10-16 01:39:09,827 INFO L80 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 41 events. 9/41 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 92 event pairs, 4 based on Foata normal form. 3/40 useless extension candidates. Maximal degree in co-relation 88. Up to 16 conditions per place. [2020-10-16 01:39:09,827 INFO L132 encePairwiseOnDemand]: 108/112 looper letters, 3 selfloop transitions, 3 changer transitions 0/21 dead transitions. [2020-10-16 01:39:09,828 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 21 transitions, 80 flow [2020-10-16 01:39:09,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:39:09,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:39:09,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 283 transitions. [2020-10-16 01:39:09,830 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8422619047619048 [2020-10-16 01:39:09,830 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 283 transitions. [2020-10-16 01:39:09,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 283 transitions. [2020-10-16 01:39:09,830 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:39:09,831 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 283 transitions. [2020-10-16 01:39:09,831 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:39:09,833 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:39:09,833 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:39:09,833 INFO L185 Difference]: Start difference. First operand has 30 places, 19 transitions, 64 flow. Second operand 3 states and 283 transitions. [2020-10-16 01:39:09,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 21 transitions, 80 flow [2020-10-16 01:39:09,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 21 transitions, 76 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 01:39:09,835 INFO L241 Difference]: Finished difference. Result has 31 places, 21 transitions, 79 flow [2020-10-16 01:39:09,835 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=60, 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=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=79, PETRI_PLACES=31, PETRI_TRANSITIONS=21} [2020-10-16 01:39:09,836 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 4 predicate places. [2020-10-16 01:39:09,836 INFO L481 AbstractCegarLoop]: Abstraction has has 31 places, 21 transitions, 79 flow [2020-10-16 01:39:09,836 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:39:09,836 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:39:09,836 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:39:09,837 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 01:39:09,837 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:39:09,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:39:09,837 INFO L82 PathProgramCache]: Analyzing trace with hash 299736864, now seen corresponding path program 1 times [2020-10-16 01:39:09,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:39:09,838 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932537052] [2020-10-16 01:39:09,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:39:09,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:39:09,868 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 01:39:09,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932537052] [2020-10-16 01:39:09,870 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:39:09,870 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:39:09,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320631648] [2020-10-16 01:39:09,871 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:39:09,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:39:09,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:39:09,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:39:09,873 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 112 [2020-10-16 01:39:09,873 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 21 transitions, 79 flow. Second operand 3 states. [2020-10-16 01:39:09,874 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:39:09,874 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 112 [2020-10-16 01:39:09,874 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:39:09,892 INFO L129 PetriNetUnfolder]: 4/36 cut-off events. [2020-10-16 01:39:09,892 INFO L130 PetriNetUnfolder]: For 66/101 co-relation queries the response was YES. [2020-10-16 01:39:09,893 INFO L80 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 36 events. 4/36 cut-off events. For 66/101 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 92 event pairs, 2 based on Foata normal form. 4/38 useless extension candidates. Maximal degree in co-relation 85. Up to 13 conditions per place. [2020-10-16 01:39:09,893 INFO L132 encePairwiseOnDemand]: 109/112 looper letters, 3 selfloop transitions, 3 changer transitions 0/21 dead transitions. [2020-10-16 01:39:09,894 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 21 transitions, 91 flow [2020-10-16 01:39:09,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:39:09,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:39:09,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 282 transitions. [2020-10-16 01:39:09,895 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8392857142857143 [2020-10-16 01:39:09,896 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 282 transitions. [2020-10-16 01:39:09,896 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 282 transitions. [2020-10-16 01:39:09,896 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:39:09,896 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 282 transitions. [2020-10-16 01:39:09,897 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:39:09,898 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:39:09,898 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:39:09,899 INFO L185 Difference]: Start difference. First operand has 31 places, 21 transitions, 79 flow. Second operand 3 states and 282 transitions. [2020-10-16 01:39:09,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 21 transitions, 91 flow [2020-10-16 01:39:09,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 21 transitions, 88 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 01:39:09,900 INFO L241 Difference]: Finished difference. Result has 33 places, 21 transitions, 87 flow [2020-10-16 01:39:09,901 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=87, PETRI_PLACES=33, PETRI_TRANSITIONS=21} [2020-10-16 01:39:09,901 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 6 predicate places. [2020-10-16 01:39:09,901 INFO L481 AbstractCegarLoop]: Abstraction has has 33 places, 21 transitions, 87 flow [2020-10-16 01:39:09,901 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:39:09,902 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:39:09,902 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:39:09,902 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 01:39:09,902 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:39:09,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:39:09,903 INFO L82 PathProgramCache]: Analyzing trace with hash -1377860362, now seen corresponding path program 1 times [2020-10-16 01:39:09,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:39:09,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433092307] [2020-10-16 01:39:09,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:39:09,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:39:09,943 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 01:39:09,944 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433092307] [2020-10-16 01:39:09,945 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:39:09,945 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:39:09,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329253335] [2020-10-16 01:39:09,946 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:39:09,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:39:09,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:39:09,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:39:09,948 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 112 [2020-10-16 01:39:09,948 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 21 transitions, 87 flow. Second operand 4 states. [2020-10-16 01:39:09,948 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:39:09,948 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 112 [2020-10-16 01:39:09,949 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:39:09,978 INFO L129 PetriNetUnfolder]: 5/49 cut-off events. [2020-10-16 01:39:09,979 INFO L130 PetriNetUnfolder]: For 179/196 co-relation queries the response was YES. [2020-10-16 01:39:09,979 INFO L80 FinitePrefix]: Finished finitePrefix Result has 124 conditions, 49 events. 5/49 cut-off events. For 179/196 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 151 event pairs, 2 based on Foata normal form. 5/53 useless extension candidates. Maximal degree in co-relation 116. Up to 17 conditions per place. [2020-10-16 01:39:09,980 INFO L132 encePairwiseOnDemand]: 108/112 looper letters, 1 selfloop transitions, 3 changer transitions 1/22 dead transitions. [2020-10-16 01:39:09,980 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 22 transitions, 100 flow [2020-10-16 01:39:09,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 01:39:09,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 01:39:09,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 367 transitions. [2020-10-16 01:39:09,982 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8191964285714286 [2020-10-16 01:39:09,982 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 367 transitions. [2020-10-16 01:39:09,983 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 367 transitions. [2020-10-16 01:39:09,983 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:39:09,983 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 367 transitions. [2020-10-16 01:39:09,984 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 01:39:09,985 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 01:39:09,985 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 01:39:09,986 INFO L185 Difference]: Start difference. First operand has 33 places, 21 transitions, 87 flow. Second operand 4 states and 367 transitions. [2020-10-16 01:39:09,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 22 transitions, 100 flow [2020-10-16 01:39:09,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 22 transitions, 95 flow, removed 1 selfloop flow, removed 1 redundant places. [2020-10-16 01:39:09,988 INFO L241 Difference]: Finished difference. Result has 37 places, 21 transitions, 96 flow [2020-10-16 01:39:09,988 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=96, PETRI_PLACES=37, PETRI_TRANSITIONS=21} [2020-10-16 01:39:09,989 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 10 predicate places. [2020-10-16 01:39:09,989 INFO L481 AbstractCegarLoop]: Abstraction has has 37 places, 21 transitions, 96 flow [2020-10-16 01:39:09,989 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:39:09,989 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:39:09,989 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:39:09,989 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 01:39:09,990 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:39:09,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:39:09,990 INFO L82 PathProgramCache]: Analyzing trace with hash 235072970, now seen corresponding path program 1 times [2020-10-16 01:39:09,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:39:09,990 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233907173] [2020-10-16 01:39:09,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:39:10,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:39:10,045 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 01:39:10,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233907173] [2020-10-16 01:39:10,045 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:39:10,045 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:39:10,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648646813] [2020-10-16 01:39:10,046 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:39:10,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:39:10,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:39:10,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:39:10,048 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 112 [2020-10-16 01:39:10,049 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 21 transitions, 96 flow. Second operand 4 states. [2020-10-16 01:39:10,049 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:39:10,049 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 112 [2020-10-16 01:39:10,049 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:39:10,108 INFO L129 PetriNetUnfolder]: 65/154 cut-off events. [2020-10-16 01:39:10,108 INFO L130 PetriNetUnfolder]: For 852/929 co-relation queries the response was YES. [2020-10-16 01:39:10,109 INFO L80 FinitePrefix]: Finished finitePrefix Result has 434 conditions, 154 events. 65/154 cut-off events. For 852/929 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 667 event pairs, 14 based on Foata normal form. 21/157 useless extension candidates. Maximal degree in co-relation 424. Up to 73 conditions per place. [2020-10-16 01:39:10,111 INFO L132 encePairwiseOnDemand]: 106/112 looper letters, 8 selfloop transitions, 5 changer transitions 0/28 dead transitions. [2020-10-16 01:39:10,111 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 28 transitions, 136 flow [2020-10-16 01:39:10,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 01:39:10,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 01:39:10,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 339 transitions. [2020-10-16 01:39:10,113 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7566964285714286 [2020-10-16 01:39:10,113 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 339 transitions. [2020-10-16 01:39:10,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 339 transitions. [2020-10-16 01:39:10,114 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:39:10,114 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 339 transitions. [2020-10-16 01:39:10,115 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 01:39:10,116 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 01:39:10,116 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 01:39:10,116 INFO L185 Difference]: Start difference. First operand has 37 places, 21 transitions, 96 flow. Second operand 4 states and 339 transitions. [2020-10-16 01:39:10,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 28 transitions, 136 flow [2020-10-16 01:39:10,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 28 transitions, 124 flow, removed 2 selfloop flow, removed 4 redundant places. [2020-10-16 01:39:10,119 INFO L241 Difference]: Finished difference. Result has 38 places, 25 transitions, 122 flow [2020-10-16 01:39:10,120 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=122, PETRI_PLACES=38, PETRI_TRANSITIONS=25} [2020-10-16 01:39:10,120 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 11 predicate places. [2020-10-16 01:39:10,120 INFO L481 AbstractCegarLoop]: Abstraction has has 38 places, 25 transitions, 122 flow [2020-10-16 01:39:10,120 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:39:10,120 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:39:10,121 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:39:10,121 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 01:39:10,121 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:39:10,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:39:10,121 INFO L82 PathProgramCache]: Analyzing trace with hash -507782499, now seen corresponding path program 1 times [2020-10-16 01:39:10,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:39:10,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977123367] [2020-10-16 01:39:10,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:39:10,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:39:10,163 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 01:39:10,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977123367] [2020-10-16 01:39:10,163 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:39:10,164 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:39:10,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325017812] [2020-10-16 01:39:10,164 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 01:39:10,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:39:10,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 01:39:10,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 01:39:10,167 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 112 [2020-10-16 01:39:10,167 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 25 transitions, 122 flow. Second operand 5 states. [2020-10-16 01:39:10,167 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:39:10,167 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 112 [2020-10-16 01:39:10,167 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:39:10,229 INFO L129 PetriNetUnfolder]: 45/130 cut-off events. [2020-10-16 01:39:10,229 INFO L130 PetriNetUnfolder]: For 487/826 co-relation queries the response was YES. [2020-10-16 01:39:10,230 INFO L80 FinitePrefix]: Finished finitePrefix Result has 450 conditions, 130 events. 45/130 cut-off events. For 487/826 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 576 event pairs, 1 based on Foata normal form. 36/148 useless extension candidates. Maximal degree in co-relation 440. Up to 92 conditions per place. [2020-10-16 01:39:10,231 INFO L132 encePairwiseOnDemand]: 106/112 looper letters, 9 selfloop transitions, 8 changer transitions 0/32 dead transitions. [2020-10-16 01:39:10,231 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 32 transitions, 185 flow [2020-10-16 01:39:10,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 01:39:10,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-16 01:39:10,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 424 transitions. [2020-10-16 01:39:10,234 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7571428571428571 [2020-10-16 01:39:10,234 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 424 transitions. [2020-10-16 01:39:10,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 424 transitions. [2020-10-16 01:39:10,234 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:39:10,235 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 424 transitions. [2020-10-16 01:39:10,236 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 6 states. [2020-10-16 01:39:10,237 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 6 states. [2020-10-16 01:39:10,237 INFO L81 ComplementDD]: Finished complementDD. Result 6 states. [2020-10-16 01:39:10,237 INFO L185 Difference]: Start difference. First operand has 38 places, 25 transitions, 122 flow. Second operand 5 states and 424 transitions. [2020-10-16 01:39:10,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 32 transitions, 185 flow [2020-10-16 01:39:10,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 32 transitions, 182 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 01:39:10,241 INFO L241 Difference]: Finished difference. Result has 43 places, 29 transitions, 174 flow [2020-10-16 01:39:10,241 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=174, PETRI_PLACES=43, PETRI_TRANSITIONS=29} [2020-10-16 01:39:10,241 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 16 predicate places. [2020-10-16 01:39:10,241 INFO L481 AbstractCegarLoop]: Abstraction has has 43 places, 29 transitions, 174 flow [2020-10-16 01:39:10,241 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 01:39:10,242 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:39:10,242 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:39:10,242 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 01:39:10,242 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:39:10,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:39:10,243 INFO L82 PathProgramCache]: Analyzing trace with hash 2090520510, now seen corresponding path program 1 times [2020-10-16 01:39:10,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:39:10,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096911788] [2020-10-16 01:39:10,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:39:10,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:39:10,265 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 01:39:10,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096911788] [2020-10-16 01:39:10,266 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:39:10,266 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:39:10,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873250606] [2020-10-16 01:39:10,267 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:39:10,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:39:10,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:39:10,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:39:10,268 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 112 [2020-10-16 01:39:10,269 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 29 transitions, 174 flow. Second operand 3 states. [2020-10-16 01:39:10,269 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:39:10,269 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 112 [2020-10-16 01:39:10,269 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:39:10,299 INFO L129 PetriNetUnfolder]: 45/141 cut-off events. [2020-10-16 01:39:10,299 INFO L130 PetriNetUnfolder]: For 578/790 co-relation queries the response was YES. [2020-10-16 01:39:10,300 INFO L80 FinitePrefix]: Finished finitePrefix Result has 520 conditions, 141 events. 45/141 cut-off events. For 578/790 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 724 event pairs, 0 based on Foata normal form. 15/135 useless extension candidates. Maximal degree in co-relation 508. Up to 102 conditions per place. [2020-10-16 01:39:10,300 INFO L132 encePairwiseOnDemand]: 109/112 looper letters, 3 selfloop transitions, 3 changer transitions 3/29 dead transitions. [2020-10-16 01:39:10,301 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 29 transitions, 186 flow [2020-10-16 01:39:10,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:39:10,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:39:10,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 291 transitions. [2020-10-16 01:39:10,303 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8660714285714286 [2020-10-16 01:39:10,303 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 291 transitions. [2020-10-16 01:39:10,303 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 291 transitions. [2020-10-16 01:39:10,303 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:39:10,303 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 291 transitions. [2020-10-16 01:39:10,304 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:39:10,305 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:39:10,305 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:39:10,305 INFO L185 Difference]: Start difference. First operand has 43 places, 29 transitions, 174 flow. Second operand 3 states and 291 transitions. [2020-10-16 01:39:10,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 29 transitions, 186 flow [2020-10-16 01:39:10,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 29 transitions, 174 flow, removed 3 selfloop flow, removed 2 redundant places. [2020-10-16 01:39:10,309 INFO L241 Difference]: Finished difference. Result has 44 places, 26 transitions, 157 flow [2020-10-16 01:39:10,309 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=157, PETRI_PLACES=44, PETRI_TRANSITIONS=26} [2020-10-16 01:39:10,310 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 17 predicate places. [2020-10-16 01:39:10,310 INFO L481 AbstractCegarLoop]: Abstraction has has 44 places, 26 transitions, 157 flow [2020-10-16 01:39:10,310 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:39:10,310 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:39:10,310 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:39:10,310 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-16 01:39:10,311 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:39:10,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:39:10,311 INFO L82 PathProgramCache]: Analyzing trace with hash 579252735, now seen corresponding path program 1 times [2020-10-16 01:39:10,311 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:39:10,312 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701986192] [2020-10-16 01:39:10,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:39:10,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:39:10,355 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 01:39:10,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701986192] [2020-10-16 01:39:10,356 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:39:10,356 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 01:39:10,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505770533] [2020-10-16 01:39:10,357 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 01:39:10,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:39:10,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 01:39:10,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-16 01:39:10,359 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 112 [2020-10-16 01:39:10,359 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 26 transitions, 157 flow. Second operand 6 states. [2020-10-16 01:39:10,359 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:39:10,359 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 112 [2020-10-16 01:39:10,359 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:39:10,414 INFO L129 PetriNetUnfolder]: 15/70 cut-off events. [2020-10-16 01:39:10,414 INFO L130 PetriNetUnfolder]: For 200/259 co-relation queries the response was YES. [2020-10-16 01:39:10,415 INFO L80 FinitePrefix]: Finished finitePrefix Result has 273 conditions, 70 events. 15/70 cut-off events. For 200/259 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 259 event pairs, 0 based on Foata normal form. 24/91 useless extension candidates. Maximal degree in co-relation 260. Up to 31 conditions per place. [2020-10-16 01:39:10,415 INFO L132 encePairwiseOnDemand]: 106/112 looper letters, 0 selfloop transitions, 0 changer transitions 26/26 dead transitions. [2020-10-16 01:39:10,415 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 26 transitions, 165 flow [2020-10-16 01:39:10,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 01:39:10,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 01:39:10,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 498 transitions. [2020-10-16 01:39:10,418 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7410714285714286 [2020-10-16 01:39:10,418 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 498 transitions. [2020-10-16 01:39:10,418 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 498 transitions. [2020-10-16 01:39:10,418 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:39:10,419 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 498 transitions. [2020-10-16 01:39:10,420 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 01:39:10,421 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 01:39:10,421 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 01:39:10,421 INFO L185 Difference]: Start difference. First operand has 44 places, 26 transitions, 157 flow. Second operand 6 states and 498 transitions. [2020-10-16 01:39:10,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 26 transitions, 165 flow [2020-10-16 01:39:10,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 26 transitions, 137 flow, removed 1 selfloop flow, removed 7 redundant places. [2020-10-16 01:39:10,423 INFO L241 Difference]: Finished difference. Result has 41 places, 0 transitions, 0 flow [2020-10-16 01:39:10,424 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=41, PETRI_TRANSITIONS=0} [2020-10-16 01:39:10,424 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 14 predicate places. [2020-10-16 01:39:10,424 INFO L481 AbstractCegarLoop]: Abstraction has has 41 places, 0 transitions, 0 flow [2020-10-16 01:39:10,424 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 01:39:10,424 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-16 01:39:10,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 01:39:10 BasicIcfg [2020-10-16 01:39:10,429 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 01:39:10,432 INFO L168 Benchmark]: Toolchain (without parser) took 4101.80 ms. Allocated memory was 250.1 MB in the beginning and 370.1 MB in the end (delta: 120.1 MB). Free memory was 205.2 MB in the beginning and 211.6 MB in the end (delta: -6.4 MB). Peak memory consumption was 113.7 MB. Max. memory is 14.2 GB. [2020-10-16 01:39:10,432 INFO L168 Benchmark]: CDTParser took 0.50 ms. Allocated memory is still 250.1 MB. Free memory is still 226.5 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 01:39:10,433 INFO L168 Benchmark]: CACSL2BoogieTranslator took 680.55 ms. Allocated memory was 250.1 MB in the beginning and 311.4 MB in the end (delta: 61.3 MB). Free memory was 205.2 MB in the beginning and 262.1 MB in the end (delta: -56.9 MB). Peak memory consumption was 26.9 MB. Max. memory is 14.2 GB. [2020-10-16 01:39:10,434 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.00 ms. Allocated memory is still 311.4 MB. Free memory was 262.1 MB in the beginning and 259.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 01:39:10,435 INFO L168 Benchmark]: Boogie Preprocessor took 26.36 ms. Allocated memory is still 311.4 MB. Free memory was 259.6 MB in the beginning and 257.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 01:39:10,435 INFO L168 Benchmark]: RCFGBuilder took 397.49 ms. Allocated memory is still 311.4 MB. Free memory was 257.1 MB in the beginning and 235.2 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. [2020-10-16 01:39:10,436 INFO L168 Benchmark]: TraceAbstraction took 2940.83 ms. Allocated memory was 311.4 MB in the beginning and 370.1 MB in the end (delta: 58.7 MB). Free memory was 235.2 MB in the beginning and 211.6 MB in the end (delta: 23.6 MB). Peak memory consumption was 82.4 MB. Max. memory is 14.2 GB. [2020-10-16 01:39:10,440 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.50 ms. Allocated memory is still 250.1 MB. Free memory is still 226.5 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 680.55 ms. Allocated memory was 250.1 MB in the beginning and 311.4 MB in the end (delta: 61.3 MB). Free memory was 205.2 MB in the beginning and 262.1 MB in the end (delta: -56.9 MB). Peak memory consumption was 26.9 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 51.00 ms. Allocated memory is still 311.4 MB. Free memory was 262.1 MB in the beginning and 259.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 26.36 ms. Allocated memory is still 311.4 MB. Free memory was 259.6 MB in the beginning and 257.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 397.49 ms. Allocated memory is still 311.4 MB. Free memory was 257.1 MB in the beginning and 235.2 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. * TraceAbstraction took 2940.83 ms. Allocated memory was 311.4 MB in the beginning and 370.1 MB in the end (delta: 58.7 MB). Free memory was 235.2 MB in the beginning and 211.6 MB in the end (delta: 23.6 MB). Peak memory consumption was 82.4 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 621 VarBasedMoverChecksPositive, 56 VarBasedMoverChecksNegative, 10 SemBasedMoverChecksPositive, 46 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 95 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.4s, 64 PlacesBefore, 27 PlacesAfterwards, 55 TransitionsBefore, 18 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 5 FixpointIterations, 13 TrivialSequentialCompositions, 25 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 0 ChoiceCompositions, 43 TotalNumberOfCompositions, 1700 MoverChecksTotal - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 68 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2.7s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 35 SDtfs, 7 SDslu, 10 SDs, 0 SdLazy, 70 SolverSat, 32 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=174occurred in iteration=8, 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: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 110 NumberOfCodeBlocks, 110 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 100 ConstructedInterpolants, 0 QuantifiedInterpolants, 2788 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...