/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe-SemanticLooper.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe001_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-16 05:00:47,364 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 05:00:47,366 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 05:00:47,392 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 05:00:47,393 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 05:00:47,400 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 05:00:47,402 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 05:00:47,404 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 05:00:47,407 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 05:00:47,409 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 05:00:47,409 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 05:00:47,410 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 05:00:47,411 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 05:00:47,412 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 05:00:47,412 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 05:00:47,415 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 05:00:47,417 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 05:00:47,420 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 05:00:47,422 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 05:00:47,426 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 05:00:47,428 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 05:00:47,431 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 05:00:47,432 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 05:00:47,432 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 05:00:47,444 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 05:00:47,444 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 05:00:47,444 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 05:00:47,445 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 05:00:47,446 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 05:00:47,448 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 05:00:47,449 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 05:00:47,449 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 05:00:47,450 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 05:00:47,451 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 05:00:47,453 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 05:00:47,453 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 05:00:47,454 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 05:00:47,454 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 05:00:47,454 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 05:00:47,455 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 05:00:47,456 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 05:00:47,456 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe-SemanticLooper.epf [2020-10-16 05:00:47,497 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 05:00:47,497 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 05:00:47,501 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 05:00:47,501 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 05:00:47,501 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 05:00:47,501 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 05:00:47,502 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 05:00:47,502 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 05:00:47,502 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 05:00:47,502 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 05:00:47,502 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 05:00:47,503 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 05:00:47,503 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 05:00:47,504 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 05:00:47,504 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 05:00:47,504 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 05:00:47,505 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 05:00:47,505 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 05:00:47,505 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 05:00:47,505 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 05:00:47,505 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 05:00:47,506 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 05:00:47,506 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 05:00:47,506 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 05:00:47,507 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 05:00:47,507 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 05:00:47,507 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 05:00:47,507 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-16 05:00:47,507 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 05:00:47,808 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 05:00:47,818 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 05:00:47,821 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 05:00:47,822 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 05:00:47,822 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 05:00:47,823 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe001_tso.opt.i [2020-10-16 05:00:47,894 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0d62efcd/d71c8b77eb9349139da767dbb89c56b1/FLAG9fc987887 [2020-10-16 05:00:48,383 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 05:00:48,383 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe001_tso.opt.i [2020-10-16 05:00:48,399 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0d62efcd/d71c8b77eb9349139da767dbb89c56b1/FLAG9fc987887 [2020-10-16 05:00:48,694 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0d62efcd/d71c8b77eb9349139da767dbb89c56b1 [2020-10-16 05:00:48,705 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 05:00:48,707 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 05:00:48,710 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 05:00:48,710 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 05:00:48,714 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 05:00:48,714 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:00:48" (1/1) ... [2020-10-16 05:00:48,718 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3765c57d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:00:48, skipping insertion in model container [2020-10-16 05:00:48,718 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:00:48" (1/1) ... [2020-10-16 05:00:48,726 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 05:00:48,769 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 05:00:49,255 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 05:00:49,270 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 05:00:49,333 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 05:00:49,404 INFO L208 MainTranslator]: Completed translation [2020-10-16 05:00:49,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:00:49 WrapperNode [2020-10-16 05:00:49,405 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 05:00:49,405 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 05:00:49,406 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 05:00:49,406 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 05:00:49,414 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:00:49" (1/1) ... [2020-10-16 05:00:49,429 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:00:49" (1/1) ... [2020-10-16 05:00:49,458 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 05:00:49,460 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 05:00:49,460 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 05:00:49,460 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 05:00:49,469 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:00:49" (1/1) ... [2020-10-16 05:00:49,469 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:00:49" (1/1) ... [2020-10-16 05:00:49,474 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:00:49" (1/1) ... [2020-10-16 05:00:49,474 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:00:49" (1/1) ... [2020-10-16 05:00:49,480 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:00:49" (1/1) ... [2020-10-16 05:00:49,482 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:00:49" (1/1) ... [2020-10-16 05:00:49,484 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:00:49" (1/1) ... [2020-10-16 05:00:49,487 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 05:00:49,488 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 05:00:49,488 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 05:00:49,488 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 05:00:49,489 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:00:49" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 05:00:49,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 05:00:49,546 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 05:00:49,546 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 05:00:49,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 05:00:49,547 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 05:00:49,547 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 05:00:49,547 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 05:00:49,547 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 05:00:49,548 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 05:00:49,548 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 05:00:49,548 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 05:00:49,548 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 05:00:49,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 05:00:49,550 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 05:00:49,857 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 05:00:49,857 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 05:00:49,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:00:49 BoogieIcfgContainer [2020-10-16 05:00:49,860 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 05:00:49,861 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 05:00:49,861 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 05:00:49,864 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 05:00:49,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 05:00:48" (1/3) ... [2020-10-16 05:00:49,865 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d81f767 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:00:49, skipping insertion in model container [2020-10-16 05:00:49,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:00:49" (2/3) ... [2020-10-16 05:00:49,866 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d81f767 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:00:49, skipping insertion in model container [2020-10-16 05:00:49,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:00:49" (3/3) ... [2020-10-16 05:00:49,867 INFO L111 eAbstractionObserver]: Analyzing ICFG safe001_tso.opt.i [2020-10-16 05:00:49,878 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 05:00:49,885 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 05:00:49,888 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 05:00:49,917 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:00:49,917 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:00:49,917 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:00:49,917 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:00:49,918 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:00:49,918 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:00:49,919 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:00:49,919 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:00:49,919 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:00:49,919 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:00:49,920 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:00:49,920 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:00:49,921 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:00:49,921 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:00:49,921 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:00:49,921 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:00:49,922 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:00:49,922 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:00:49,928 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:00:49,928 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:00:49,933 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:00:49,933 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:00:49,938 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:00:49,939 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:00:49,939 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:00:49,939 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:00:49,941 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:00:49,942 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:00:49,942 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:00:49,942 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:00:49,960 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 05:00:49,980 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 05:00:49,981 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 05:00:49,981 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 05:00:49,981 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 05:00:49,981 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 05:00:49,981 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 05:00:49,981 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 05:00:49,982 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 05:00:49,995 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-10-16 05:00:50,036 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-10-16 05:00:50,037 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:00:50,041 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 05:00:50,042 INFO L82 GeneralOperation]: Start removeDead. Operand has 77 places, 69 transitions, 153 flow [2020-10-16 05:00:50,047 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 64 places, 55 transitions, 119 flow [2020-10-16 05:00:50,049 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 05:00:50,052 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 64 places, 55 transitions, 119 flow [2020-10-16 05:00:50,054 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 64 places, 55 transitions, 119 flow [2020-10-16 05:00:50,055 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 64 places, 55 transitions, 119 flow [2020-10-16 05:00:50,083 INFO L129 PetriNetUnfolder]: 1/55 cut-off events. [2020-10-16 05:00:50,084 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:00:50,087 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 45 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 05:00:50,089 INFO L117 LiptonReduction]: Number of co-enabled transitions 864 [2020-10-16 05:00:51,324 INFO L132 LiptonReduction]: Checked pairs total: 1587 [2020-10-16 05:00:51,325 INFO L134 LiptonReduction]: Total number of compositions: 40 [2020-10-16 05:00:51,327 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1280 [2020-10-16 05:00:51,336 INFO L129 PetriNetUnfolder]: 0/15 cut-off events. [2020-10-16 05:00:51,336 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:00:51,336 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:00:51,337 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:00:51,338 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:00:51,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:00:51,344 INFO L82 PathProgramCache]: Analyzing trace with hash -1628105853, now seen corresponding path program 1 times [2020-10-16 05:00:51,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:00:51,354 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600843581] [2020-10-16 05:00:51,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:00:51,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:00:51,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:00:51,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600843581] [2020-10-16 05:00:51,562 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:00:51,563 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 05:00:51,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179608181] [2020-10-16 05:00:51,573 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 05:00:51,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:00:51,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 05:00:51,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 05:00:51,593 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 109 [2020-10-16 05:00:51,595 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 43 flow. Second operand 3 states. [2020-10-16 05:00:51,595 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:00:51,596 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 109 [2020-10-16 05:00:51,597 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:00:51,617 INFO L129 PetriNetUnfolder]: 0/17 cut-off events. [2020-10-16 05:00:51,618 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:00:51,618 INFO L80 FinitePrefix]: Finished finitePrefix Result has 31 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 16 event pairs, 0 based on Foata normal form. 1/18 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2020-10-16 05:00:51,619 INFO L132 encePairwiseOnDemand]: 106/109 looper letters, 1 selfloop transitions, 2 changer transitions 0/17 dead transitions. [2020-10-16 05:00:51,619 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 17 transitions, 49 flow [2020-10-16 05:00:51,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 05:00:51,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 05:00:51,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 280 transitions. [2020-10-16 05:00:51,636 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8562691131498471 [2020-10-16 05:00:51,637 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 280 transitions. [2020-10-16 05:00:51,638 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 280 transitions. [2020-10-16 05:00:51,640 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:00:51,643 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 280 transitions. [2020-10-16 05:00:51,647 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 05:00:51,653 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 05:00:51,653 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 05:00:51,655 INFO L185 Difference]: Start difference. First operand has 27 places, 17 transitions, 43 flow. Second operand 3 states and 280 transitions. [2020-10-16 05:00:51,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 17 transitions, 49 flow [2020-10-16 05:00:51,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 17 transitions, 46 flow, removed 0 selfloop flow, removed 3 redundant places. [2020-10-16 05:00:51,661 INFO L241 Difference]: Finished difference. Result has 27 places, 17 transitions, 48 flow [2020-10-16 05:00:51,663 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=48, PETRI_PLACES=27, PETRI_TRANSITIONS=17} [2020-10-16 05:00:51,664 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 0 predicate places. [2020-10-16 05:00:51,665 INFO L481 AbstractCegarLoop]: Abstraction has has 27 places, 17 transitions, 48 flow [2020-10-16 05:00:51,665 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 05:00:51,665 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:00:51,665 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:00:51,665 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 05:00:51,666 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:00:51,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:00:51,666 INFO L82 PathProgramCache]: Analyzing trace with hash 1068325757, now seen corresponding path program 1 times [2020-10-16 05:00:51,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:00:51,667 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021338298] [2020-10-16 05:00:51,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:00:51,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:00:51,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:00:51,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021338298] [2020-10-16 05:00:51,749 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:00:51,749 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 05:00:51,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194064238] [2020-10-16 05:00:51,750 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:00:51,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:00:51,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:00:51,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:00:51,753 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 109 [2020-10-16 05:00:51,753 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 48 flow. Second operand 4 states. [2020-10-16 05:00:51,754 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:00:51,754 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 109 [2020-10-16 05:00:51,754 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:00:51,799 INFO L129 PetriNetUnfolder]: 11/56 cut-off events. [2020-10-16 05:00:51,799 INFO L130 PetriNetUnfolder]: For 12/19 co-relation queries the response was YES. [2020-10-16 05:00:51,800 INFO L80 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 56 events. 11/56 cut-off events. For 12/19 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 203 event pairs, 1 based on Foata normal form. 6/60 useless extension candidates. Maximal degree in co-relation 104. Up to 15 conditions per place. [2020-10-16 05:00:51,800 INFO L132 encePairwiseOnDemand]: 104/109 looper letters, 8 selfloop transitions, 4 changer transitions 1/24 dead transitions. [2020-10-16 05:00:51,801 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 24 transitions, 91 flow [2020-10-16 05:00:51,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 05:00:51,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 05:00:51,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 351 transitions. [2020-10-16 05:00:51,804 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.805045871559633 [2020-10-16 05:00:51,805 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 351 transitions. [2020-10-16 05:00:51,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 351 transitions. [2020-10-16 05:00:51,805 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:00:51,805 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 351 transitions. [2020-10-16 05:00:51,807 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 05:00:51,809 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 05:00:51,809 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 05:00:51,809 INFO L185 Difference]: Start difference. First operand has 27 places, 17 transitions, 48 flow. Second operand 4 states and 351 transitions. [2020-10-16 05:00:51,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 24 transitions, 91 flow [2020-10-16 05:00:51,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 24 transitions, 85 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 05:00:51,811 INFO L241 Difference]: Finished difference. Result has 30 places, 19 transitions, 70 flow [2020-10-16 05:00:51,811 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=70, PETRI_PLACES=30, PETRI_TRANSITIONS=19} [2020-10-16 05:00:51,812 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 3 predicate places. [2020-10-16 05:00:51,812 INFO L481 AbstractCegarLoop]: Abstraction has has 30 places, 19 transitions, 70 flow [2020-10-16 05:00:51,812 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:00:51,812 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:00:51,812 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:00:51,813 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 05:00:51,813 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:00:51,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:00:51,813 INFO L82 PathProgramCache]: Analyzing trace with hash 1965831898, now seen corresponding path program 1 times [2020-10-16 05:00:51,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:00:51,814 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587815827] [2020-10-16 05:00:51,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:00:51,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:00:51,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:00:51,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587815827] [2020-10-16 05:00:51,879 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:00:51,879 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:00:51,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40208448] [2020-10-16 05:00:51,880 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:00:51,882 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:00:51,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:00:51,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:00:51,884 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 109 [2020-10-16 05:00:51,884 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 19 transitions, 70 flow. Second operand 4 states. [2020-10-16 05:00:51,885 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:00:51,885 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 109 [2020-10-16 05:00:51,886 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:00:51,932 INFO L129 PetriNetUnfolder]: 2/43 cut-off events. [2020-10-16 05:00:51,933 INFO L130 PetriNetUnfolder]: For 29/33 co-relation queries the response was YES. [2020-10-16 05:00:51,936 INFO L80 FinitePrefix]: Finished finitePrefix Result has 107 conditions, 43 events. 2/43 cut-off events. For 29/33 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 142 event pairs, 0 based on Foata normal form. 7/50 useless extension candidates. Maximal degree in co-relation 95. Up to 11 conditions per place. [2020-10-16 05:00:51,936 INFO L132 encePairwiseOnDemand]: 105/109 looper letters, 6 selfloop transitions, 3 changer transitions 3/23 dead transitions. [2020-10-16 05:00:51,937 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 23 transitions, 108 flow [2020-10-16 05:00:51,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 05:00:51,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-16 05:00:51,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 434 transitions. [2020-10-16 05:00:51,952 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7963302752293578 [2020-10-16 05:00:51,952 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 434 transitions. [2020-10-16 05:00:51,952 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 434 transitions. [2020-10-16 05:00:51,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:00:51,955 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 434 transitions. [2020-10-16 05:00:51,957 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 6 states. [2020-10-16 05:00:51,958 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 6 states. [2020-10-16 05:00:51,958 INFO L81 ComplementDD]: Finished complementDD. Result 6 states. [2020-10-16 05:00:51,958 INFO L185 Difference]: Start difference. First operand has 30 places, 19 transitions, 70 flow. Second operand 5 states and 434 transitions. [2020-10-16 05:00:51,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 23 transitions, 108 flow [2020-10-16 05:00:51,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 23 transitions, 96 flow, removed 1 selfloop flow, removed 3 redundant places. [2020-10-16 05:00:51,960 INFO L241 Difference]: Finished difference. Result has 34 places, 19 transitions, 78 flow [2020-10-16 05:00:51,961 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=61, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=78, PETRI_PLACES=34, PETRI_TRANSITIONS=19} [2020-10-16 05:00:51,961 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 7 predicate places. [2020-10-16 05:00:51,961 INFO L481 AbstractCegarLoop]: Abstraction has has 34 places, 19 transitions, 78 flow [2020-10-16 05:00:51,961 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:00:51,961 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:00:51,962 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:00:51,962 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 05:00:51,962 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:00:51,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:00:51,963 INFO L82 PathProgramCache]: Analyzing trace with hash 154652174, now seen corresponding path program 1 times [2020-10-16 05:00:51,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:00:51,963 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54047869] [2020-10-16 05:00:51,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:00:51,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:00:52,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:00:52,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54047869] [2020-10-16 05:00:52,003 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:00:52,003 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 05:00:52,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58596220] [2020-10-16 05:00:52,004 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:00:52,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:00:52,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:00:52,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:00:52,006 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 109 [2020-10-16 05:00:52,006 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 19 transitions, 78 flow. Second operand 4 states. [2020-10-16 05:00:52,006 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:00:52,006 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 109 [2020-10-16 05:00:52,007 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:00:52,037 INFO L129 PetriNetUnfolder]: 0/34 cut-off events. [2020-10-16 05:00:52,037 INFO L130 PetriNetUnfolder]: For 37/37 co-relation queries the response was YES. [2020-10-16 05:00:52,037 INFO L80 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 34 events. 0/34 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 94 event pairs, 0 based on Foata normal form. 2/36 useless extension candidates. Maximal degree in co-relation 0. Up to 9 conditions per place. [2020-10-16 05:00:52,038 INFO L132 encePairwiseOnDemand]: 104/109 looper letters, 3 selfloop transitions, 3 changer transitions 5/22 dead transitions. [2020-10-16 05:00:52,038 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 22 transitions, 114 flow [2020-10-16 05:00:52,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 05:00:52,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 05:00:52,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 348 transitions. [2020-10-16 05:00:52,040 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7981651376146789 [2020-10-16 05:00:52,040 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 348 transitions. [2020-10-16 05:00:52,040 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 348 transitions. [2020-10-16 05:00:52,041 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:00:52,041 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 348 transitions. [2020-10-16 05:00:52,042 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 05:00:52,042 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 05:00:52,043 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 05:00:52,043 INFO L185 Difference]: Start difference. First operand has 34 places, 19 transitions, 78 flow. Second operand 4 states and 348 transitions. [2020-10-16 05:00:52,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 22 transitions, 114 flow [2020-10-16 05:00:52,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 22 transitions, 102 flow, removed 4 selfloop flow, removed 3 redundant places. [2020-10-16 05:00:52,045 INFO L241 Difference]: Finished difference. Result has 33 places, 17 transitions, 68 flow [2020-10-16 05:00:52,045 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=69, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=68, PETRI_PLACES=33, PETRI_TRANSITIONS=17} [2020-10-16 05:00:52,045 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 6 predicate places. [2020-10-16 05:00:52,046 INFO L481 AbstractCegarLoop]: Abstraction has has 33 places, 17 transitions, 68 flow [2020-10-16 05:00:52,046 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:00:52,046 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:00:52,046 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:00:52,046 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 05:00:52,046 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:00:52,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:00:52,047 INFO L82 PathProgramCache]: Analyzing trace with hash -2068679953, now seen corresponding path program 1 times [2020-10-16 05:00:52,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:00:52,047 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284532789] [2020-10-16 05:00:52,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:00:52,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:00:52,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:00:52,112 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284532789] [2020-10-16 05:00:52,112 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:00:52,112 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 05:00:52,112 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388954895] [2020-10-16 05:00:52,113 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:00:52,113 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:00:52,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:00:52,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:00:52,116 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 109 [2020-10-16 05:00:52,117 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 17 transitions, 68 flow. Second operand 4 states. [2020-10-16 05:00:52,118 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:00:52,118 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 109 [2020-10-16 05:00:52,118 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:00:52,171 INFO L129 PetriNetUnfolder]: 28/69 cut-off events. [2020-10-16 05:00:52,172 INFO L130 PetriNetUnfolder]: For 154/165 co-relation queries the response was YES. [2020-10-16 05:00:52,172 INFO L80 FinitePrefix]: Finished finitePrefix Result has 178 conditions, 69 events. 28/69 cut-off events. For 154/165 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 210 event pairs, 12 based on Foata normal form. 9/72 useless extension candidates. Maximal degree in co-relation 165. Up to 45 conditions per place. [2020-10-16 05:00:52,173 INFO L132 encePairwiseOnDemand]: 103/109 looper letters, 5 selfloop transitions, 4 changer transitions 7/27 dead transitions. [2020-10-16 05:00:52,173 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 27 transitions, 120 flow [2020-10-16 05:00:52,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 05:00:52,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-16 05:00:52,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 418 transitions. [2020-10-16 05:00:52,175 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7669724770642202 [2020-10-16 05:00:52,176 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 418 transitions. [2020-10-16 05:00:52,176 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 418 transitions. [2020-10-16 05:00:52,176 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:00:52,176 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 418 transitions. [2020-10-16 05:00:52,177 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 6 states. [2020-10-16 05:00:52,178 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 6 states. [2020-10-16 05:00:52,178 INFO L81 ComplementDD]: Finished complementDD. Result 6 states. [2020-10-16 05:00:52,179 INFO L185 Difference]: Start difference. First operand has 33 places, 17 transitions, 68 flow. Second operand 5 states and 418 transitions. [2020-10-16 05:00:52,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 27 transitions, 120 flow [2020-10-16 05:00:52,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 27 transitions, 102 flow, removed 3 selfloop flow, removed 6 redundant places. [2020-10-16 05:00:52,181 INFO L241 Difference]: Finished difference. Result has 34 places, 20 transitions, 86 flow [2020-10-16 05:00:52,181 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=86, PETRI_PLACES=34, PETRI_TRANSITIONS=20} [2020-10-16 05:00:52,181 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 7 predicate places. [2020-10-16 05:00:52,181 INFO L481 AbstractCegarLoop]: Abstraction has has 34 places, 20 transitions, 86 flow [2020-10-16 05:00:52,181 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:00:52,181 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:00:52,182 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:00:52,182 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 05:00:52,182 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:00:52,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:00:52,182 INFO L82 PathProgramCache]: Analyzing trace with hash 1341191340, now seen corresponding path program 1 times [2020-10-16 05:00:52,183 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:00:52,183 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441678323] [2020-10-16 05:00:52,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:00:52,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:00:52,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:00:52,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441678323] [2020-10-16 05:00:52,230 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:00:52,230 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:00:52,231 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851993423] [2020-10-16 05:00:52,231 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 05:00:52,231 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:00:52,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 05:00:52,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 05:00:52,233 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 109 [2020-10-16 05:00:52,234 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 20 transitions, 86 flow. Second operand 5 states. [2020-10-16 05:00:52,234 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:00:52,234 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 109 [2020-10-16 05:00:52,234 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:00:52,298 INFO L129 PetriNetUnfolder]: 16/50 cut-off events. [2020-10-16 05:00:52,298 INFO L130 PetriNetUnfolder]: For 83/128 co-relation queries the response was YES. [2020-10-16 05:00:52,299 INFO L80 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 50 events. 16/50 cut-off events. For 83/128 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 115 event pairs, 2 based on Foata normal form. 16/64 useless extension candidates. Maximal degree in co-relation 168. Up to 35 conditions per place. [2020-10-16 05:00:52,299 INFO L132 encePairwiseOnDemand]: 103/109 looper letters, 5 selfloop transitions, 7 changer transitions 7/30 dead transitions. [2020-10-16 05:00:52,300 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 30 transitions, 182 flow [2020-10-16 05:00:52,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 05:00:52,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 05:00:52,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 501 transitions. [2020-10-16 05:00:52,302 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7660550458715596 [2020-10-16 05:00:52,302 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 501 transitions. [2020-10-16 05:00:52,302 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 501 transitions. [2020-10-16 05:00:52,303 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:00:52,303 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 501 transitions. [2020-10-16 05:00:52,304 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 05:00:52,305 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 05:00:52,306 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 05:00:52,306 INFO L185 Difference]: Start difference. First operand has 34 places, 20 transitions, 86 flow. Second operand 6 states and 501 transitions. [2020-10-16 05:00:52,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 30 transitions, 182 flow [2020-10-16 05:00:52,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 30 transitions, 176 flow, removed 1 selfloop flow, removed 2 redundant places. [2020-10-16 05:00:52,309 INFO L241 Difference]: Finished difference. Result has 38 places, 23 transitions, 136 flow [2020-10-16 05:00:52,309 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=136, PETRI_PLACES=38, PETRI_TRANSITIONS=23} [2020-10-16 05:00:52,309 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 11 predicate places. [2020-10-16 05:00:52,309 INFO L481 AbstractCegarLoop]: Abstraction has has 38 places, 23 transitions, 136 flow [2020-10-16 05:00:52,309 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 05:00:52,310 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:00:52,310 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:00:52,310 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 05:00:52,310 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:00:52,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:00:52,311 INFO L82 PathProgramCache]: Analyzing trace with hash 568448593, now seen corresponding path program 1 times [2020-10-16 05:00:52,311 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:00:52,311 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103636218] [2020-10-16 05:00:52,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:00:52,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:00:52,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:00:52,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103636218] [2020-10-16 05:00:52,360 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:00:52,360 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 05:00:52,360 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504216052] [2020-10-16 05:00:52,360 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 05:00:52,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:00:52,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 05:00:52,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-16 05:00:52,363 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 109 [2020-10-16 05:00:52,363 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 23 transitions, 136 flow. Second operand 6 states. [2020-10-16 05:00:52,363 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:00:52,364 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 109 [2020-10-16 05:00:52,364 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:00:52,417 INFO L129 PetriNetUnfolder]: 7/32 cut-off events. [2020-10-16 05:00:52,418 INFO L130 PetriNetUnfolder]: For 98/136 co-relation queries the response was YES. [2020-10-16 05:00:52,418 INFO L80 FinitePrefix]: Finished finitePrefix Result has 141 conditions, 32 events. 7/32 cut-off events. For 98/136 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 45 event pairs, 0 based on Foata normal form. 14/45 useless extension candidates. Maximal degree in co-relation 125. Up to 20 conditions per place. [2020-10-16 05:00:52,419 INFO L132 encePairwiseOnDemand]: 103/109 looper letters, 2 selfloop transitions, 10 changer transitions 4/27 dead transitions. [2020-10-16 05:00:52,419 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 27 transitions, 204 flow [2020-10-16 05:00:52,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 05:00:52,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-16 05:00:52,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 578 transitions. [2020-10-16 05:00:52,421 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7575360419397117 [2020-10-16 05:00:52,421 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 578 transitions. [2020-10-16 05:00:52,421 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 578 transitions. [2020-10-16 05:00:52,422 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:00:52,422 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 578 transitions. [2020-10-16 05:00:52,423 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-16 05:00:52,425 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-16 05:00:52,425 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-16 05:00:52,425 INFO L185 Difference]: Start difference. First operand has 38 places, 23 transitions, 136 flow. Second operand 7 states and 578 transitions. [2020-10-16 05:00:52,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 27 transitions, 204 flow [2020-10-16 05:00:52,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 27 transitions, 168 flow, removed 14 selfloop flow, removed 4 redundant places. [2020-10-16 05:00:52,428 INFO L241 Difference]: Finished difference. Result has 41 places, 23 transitions, 138 flow [2020-10-16 05:00:52,428 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=138, PETRI_PLACES=41, PETRI_TRANSITIONS=23} [2020-10-16 05:00:52,428 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 14 predicate places. [2020-10-16 05:00:52,429 INFO L481 AbstractCegarLoop]: Abstraction has has 41 places, 23 transitions, 138 flow [2020-10-16 05:00:52,429 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 05:00:52,429 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:00:52,429 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:00:52,429 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 05:00:52,429 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:00:52,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:00:52,430 INFO L82 PathProgramCache]: Analyzing trace with hash 1010226051, now seen corresponding path program 1 times [2020-10-16 05:00:52,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:00:52,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540950729] [2020-10-16 05:00:52,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:00:52,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:00:52,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:00:52,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540950729] [2020-10-16 05:00:52,456 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:00:52,456 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 05:00:52,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081580082] [2020-10-16 05:00:52,457 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 05:00:52,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:00:52,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 05:00:52,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 05:00:52,458 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 109 [2020-10-16 05:00:52,459 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 23 transitions, 138 flow. Second operand 3 states. [2020-10-16 05:00:52,459 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:00:52,459 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 109 [2020-10-16 05:00:52,459 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:00:52,466 INFO L129 PetriNetUnfolder]: 5/25 cut-off events. [2020-10-16 05:00:52,466 INFO L130 PetriNetUnfolder]: For 47/52 co-relation queries the response was YES. [2020-10-16 05:00:52,467 INFO L80 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 25 events. 5/25 cut-off events. For 47/52 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 22 event pairs, 0 based on Foata normal form. 1/25 useless extension candidates. Maximal degree in co-relation 79. Up to 11 conditions per place. [2020-10-16 05:00:52,467 INFO L132 encePairwiseOnDemand]: 107/109 looper letters, 0 selfloop transitions, 0 changer transitions 22/22 dead transitions. [2020-10-16 05:00:52,467 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 22 transitions, 134 flow [2020-10-16 05:00:52,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 05:00:52,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 05:00:52,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 277 transitions. [2020-10-16 05:00:52,469 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8470948012232415 [2020-10-16 05:00:52,469 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 277 transitions. [2020-10-16 05:00:52,469 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 277 transitions. [2020-10-16 05:00:52,470 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:00:52,470 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 277 transitions. [2020-10-16 05:00:52,470 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 05:00:52,471 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 05:00:52,471 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 05:00:52,471 INFO L185 Difference]: Start difference. First operand has 41 places, 23 transitions, 138 flow. Second operand 3 states and 277 transitions. [2020-10-16 05:00:52,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 22 transitions, 134 flow [2020-10-16 05:00:52,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 22 transitions, 100 flow, removed 9 selfloop flow, removed 5 redundant places. [2020-10-16 05:00:52,473 INFO L241 Difference]: Finished difference. Result has 35 places, 0 transitions, 0 flow [2020-10-16 05:00:52,473 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=35, PETRI_TRANSITIONS=0} [2020-10-16 05:00:52,474 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 8 predicate places. [2020-10-16 05:00:52,474 INFO L481 AbstractCegarLoop]: Abstraction has has 35 places, 0 transitions, 0 flow [2020-10-16 05:00:52,474 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 05:00:52,474 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 05:00:52,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 05:00:52 BasicIcfg [2020-10-16 05:00:52,478 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 05:00:52,481 INFO L168 Benchmark]: Toolchain (without parser) took 3773.16 ms. Allocated memory was 253.2 MB in the beginning and 371.7 MB in the end (delta: 118.5 MB). Free memory was 209.1 MB in the beginning and 253.4 MB in the end (delta: -44.3 MB). Peak memory consumption was 74.2 MB. Max. memory is 14.2 GB. [2020-10-16 05:00:52,482 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 253.2 MB. Free memory was 231.3 MB in the beginning and 230.4 MB in the end (delta: 839.2 kB). Peak memory consumption was 839.2 kB. Max. memory is 14.2 GB. [2020-10-16 05:00:52,483 INFO L168 Benchmark]: CACSL2BoogieTranslator took 694.89 ms. Allocated memory was 253.2 MB in the beginning and 318.8 MB in the end (delta: 65.5 MB). Free memory was 208.3 MB in the beginning and 271.4 MB in the end (delta: -63.2 MB). Peak memory consumption was 29.6 MB. Max. memory is 14.2 GB. [2020-10-16 05:00:52,484 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.98 ms. Allocated memory is still 318.8 MB. Free memory was 271.4 MB in the beginning and 269.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 14.2 GB. [2020-10-16 05:00:52,484 INFO L168 Benchmark]: Boogie Preprocessor took 28.06 ms. Allocated memory is still 318.8 MB. Free memory was 269.6 MB in the beginning and 268.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. [2020-10-16 05:00:52,485 INFO L168 Benchmark]: RCFGBuilder took 371.81 ms. Allocated memory is still 318.8 MB. Free memory was 268.0 MB in the beginning and 245.9 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 14.2 GB. [2020-10-16 05:00:52,486 INFO L168 Benchmark]: TraceAbstraction took 2617.51 ms. Allocated memory was 318.8 MB in the beginning and 371.7 MB in the end (delta: 53.0 MB). Free memory was 245.0 MB in the beginning and 253.4 MB in the end (delta: -8.4 MB). Peak memory consumption was 44.6 MB. Max. memory is 14.2 GB. [2020-10-16 05:00:52,490 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 253.2 MB. Free memory was 231.3 MB in the beginning and 230.4 MB in the end (delta: 839.2 kB). Peak memory consumption was 839.2 kB. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 694.89 ms. Allocated memory was 253.2 MB in the beginning and 318.8 MB in the end (delta: 65.5 MB). Free memory was 208.3 MB in the beginning and 271.4 MB in the end (delta: -63.2 MB). Peak memory consumption was 29.6 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 53.98 ms. Allocated memory is still 318.8 MB. Free memory was 271.4 MB in the beginning and 269.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 28.06 ms. Allocated memory is still 318.8 MB. Free memory was 269.6 MB in the beginning and 268.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. * RCFGBuilder took 371.81 ms. Allocated memory is still 318.8 MB. Free memory was 268.0 MB in the beginning and 245.9 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 14.2 GB. * TraceAbstraction took 2617.51 ms. Allocated memory was 318.8 MB in the beginning and 371.7 MB in the end (delta: 53.0 MB). Free memory was 245.0 MB in the beginning and 253.4 MB in the end (delta: -8.4 MB). Peak memory consumption was 44.6 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 550 VarBasedMoverChecksPositive, 46 VarBasedMoverChecksNegative, 10 SemBasedMoverChecksPositive, 36 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 80 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.2s, 64 PlacesBefore, 27 PlacesAfterwards, 55 TransitionsBefore, 17 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 5 FixpointIterations, 13 TrivialSequentialCompositions, 24 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 40 TotalNumberOfCompositions, 1587 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: 2.4s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.3s, HoareTripleCheckerStatistics: 32 SDtfs, 21 SDslu, 20 SDs, 0 SdLazy, 119 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=138occurred in iteration=7, 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, 98 NumberOfCodeBlocks, 98 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 90 ConstructedInterpolants, 0 QuantifiedInterpolants, 3030 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...