/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/safe015_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-16 05:04:46,368 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 05:04:46,371 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 05:04:46,399 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 05:04:46,399 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 05:04:46,400 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 05:04:46,401 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 05:04:46,403 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 05:04:46,405 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 05:04:46,406 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 05:04:46,407 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 05:04:46,408 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 05:04:46,408 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 05:04:46,409 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 05:04:46,410 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 05:04:46,411 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 05:04:46,412 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 05:04:46,413 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 05:04:46,415 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 05:04:46,417 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 05:04:46,419 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 05:04:46,420 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 05:04:46,421 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 05:04:46,422 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 05:04:46,425 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 05:04:46,425 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 05:04:46,425 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 05:04:46,426 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 05:04:46,427 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 05:04:46,428 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 05:04:46,428 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 05:04:46,429 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 05:04:46,430 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 05:04:46,431 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 05:04:46,432 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 05:04:46,432 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 05:04:46,433 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 05:04:46,433 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 05:04:46,433 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 05:04:46,434 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 05:04:46,435 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 05:04:46,436 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 05:04:46,471 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 05:04:46,471 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 05:04:46,473 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 05:04:46,473 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 05:04:46,473 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 05:04:46,473 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 05:04:46,473 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 05:04:46,474 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 05:04:46,474 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 05:04:46,474 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 05:04:46,474 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 05:04:46,474 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 05:04:46,475 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 05:04:46,475 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 05:04:46,475 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 05:04:46,475 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 05:04:46,475 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 05:04:46,476 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 05:04:46,476 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 05:04:46,476 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 05:04:46,476 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 05:04:46,476 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 05:04:46,477 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 05:04:46,477 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 05:04:46,479 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 05:04:46,479 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 05:04:46,479 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 05:04:46,479 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-16 05:04:46,480 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 05:04:46,776 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 05:04:46,787 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 05:04:46,791 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 05:04:46,792 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 05:04:46,793 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 05:04:46,794 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe015_pso.oepc.i [2020-10-16 05:04:46,860 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5eb5b2ec3/325ee7c0818d44c498335015673cb7a1/FLAGb7a770f7e [2020-10-16 05:04:47,412 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 05:04:47,413 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe015_pso.oepc.i [2020-10-16 05:04:47,432 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5eb5b2ec3/325ee7c0818d44c498335015673cb7a1/FLAGb7a770f7e [2020-10-16 05:04:47,703 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5eb5b2ec3/325ee7c0818d44c498335015673cb7a1 [2020-10-16 05:04:47,713 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 05:04:47,715 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 05:04:47,716 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 05:04:47,717 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 05:04:47,720 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 05:04:47,721 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:04:47" (1/1) ... [2020-10-16 05:04:47,724 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d4b4aaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:04:47, skipping insertion in model container [2020-10-16 05:04:47,725 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:04:47" (1/1) ... [2020-10-16 05:04:47,732 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 05:04:47,771 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 05:04:48,224 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 05:04:48,236 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 05:04:48,279 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 05:04:48,349 INFO L208 MainTranslator]: Completed translation [2020-10-16 05:04:48,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:04:48 WrapperNode [2020-10-16 05:04:48,350 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 05:04:48,351 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 05:04:48,351 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 05:04:48,351 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 05:04:48,360 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:04:48" (1/1) ... [2020-10-16 05:04:48,376 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:04:48" (1/1) ... [2020-10-16 05:04:48,400 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 05:04:48,400 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 05:04:48,400 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 05:04:48,400 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 05:04:48,410 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:04:48" (1/1) ... [2020-10-16 05:04:48,410 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:04:48" (1/1) ... [2020-10-16 05:04:48,413 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:04:48" (1/1) ... [2020-10-16 05:04:48,414 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:04:48" (1/1) ... [2020-10-16 05:04:48,420 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:04:48" (1/1) ... [2020-10-16 05:04:48,422 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:04:48" (1/1) ... [2020-10-16 05:04:48,425 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:04:48" (1/1) ... [2020-10-16 05:04:48,428 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 05:04:48,428 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 05:04:48,429 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 05:04:48,429 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 05:04:48,430 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:04:48" (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 05:04:48,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 05:04:48,497 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 05:04:48,497 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 05:04:48,497 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 05:04:48,497 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 05:04:48,498 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 05:04:48,498 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 05:04:48,498 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 05:04:48,499 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 05:04:48,499 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 05:04:48,500 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 05:04:48,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 05:04:48,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 05:04:48,502 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 05:04:48,874 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 05:04:48,874 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 05:04:48,876 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:04:48 BoogieIcfgContainer [2020-10-16 05:04:48,877 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 05:04:48,878 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 05:04:48,878 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 05:04:48,882 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 05:04:48,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 05:04:47" (1/3) ... [2020-10-16 05:04:48,883 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35f57226 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:04:48, skipping insertion in model container [2020-10-16 05:04:48,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:04:48" (2/3) ... [2020-10-16 05:04:48,883 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35f57226 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:04:48, skipping insertion in model container [2020-10-16 05:04:48,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:04:48" (3/3) ... [2020-10-16 05:04:48,885 INFO L111 eAbstractionObserver]: Analyzing ICFG safe015_pso.oepc.i [2020-10-16 05:04:48,897 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 05:04:48,905 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 05:04:48,906 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 05:04:48,932 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:48,932 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:48,932 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:48,933 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:48,933 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:48,934 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:48,934 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:48,934 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:48,935 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:48,935 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:48,935 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:48,935 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:48,936 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:48,936 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:48,936 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:48,936 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:48,937 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:48,937 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:48,941 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:48,941 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:48,941 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:48,942 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:48,948 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:48,948 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:48,949 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:48,949 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:48,951 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:48,952 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:48,952 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:48,952 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:04:48,971 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 05:04:48,992 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 05:04:48,992 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 05:04:48,992 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 05:04:48,993 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 05:04:48,993 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 05:04:48,993 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 05:04:48,993 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 05:04:48,993 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 05:04:49,007 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-10-16 05:04:49,049 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-10-16 05:04:49,049 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:04:49,054 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 46 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 05:04:49,054 INFO L82 GeneralOperation]: Start removeDead. Operand has 77 places, 69 transitions, 153 flow [2020-10-16 05:04:49,060 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 64 places, 55 transitions, 119 flow [2020-10-16 05:04:49,063 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 05:04:49,066 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 64 places, 55 transitions, 119 flow [2020-10-16 05:04:49,068 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 64 places, 55 transitions, 119 flow [2020-10-16 05:04:49,069 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 64 places, 55 transitions, 119 flow [2020-10-16 05:04:49,087 INFO L129 PetriNetUnfolder]: 1/55 cut-off events. [2020-10-16 05:04:49,087 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:04:49,088 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 49 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 05:04:49,090 INFO L117 LiptonReduction]: Number of co-enabled transitions 864 [2020-10-16 05:04:50,367 INFO L132 LiptonReduction]: Checked pairs total: 1770 [2020-10-16 05:04:50,368 INFO L134 LiptonReduction]: Total number of compositions: 42 [2020-10-16 05:04:50,371 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1309 [2020-10-16 05:04:50,379 INFO L129 PetriNetUnfolder]: 0/13 cut-off events. [2020-10-16 05:04:50,379 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:04:50,379 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:04:50,380 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:04:50,381 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:04:50,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:04:50,387 INFO L82 PathProgramCache]: Analyzing trace with hash -142927657, now seen corresponding path program 1 times [2020-10-16 05:04:50,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:04:50,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269900583] [2020-10-16 05:04:50,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:04:50,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:04:50,620 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 05:04:50,620 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269900583] [2020-10-16 05:04:50,621 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:04:50,622 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 05:04:50,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668859647] [2020-10-16 05:04:50,633 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 05:04:50,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:04:50,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 05:04:50,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 05:04:50,652 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 111 [2020-10-16 05:04:50,654 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 18 transitions, 45 flow. Second operand 3 states. [2020-10-16 05:04:50,654 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:04:50,654 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 111 [2020-10-16 05:04:50,656 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:04:50,678 INFO L129 PetriNetUnfolder]: 3/24 cut-off events. [2020-10-16 05:04:50,678 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:04:50,679 INFO L80 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 24 events. 3/24 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 33 event pairs, 1 based on Foata normal form. 5/29 useless extension candidates. Maximal degree in co-relation 35. Up to 10 conditions per place. [2020-10-16 05:04:50,680 INFO L132 encePairwiseOnDemand]: 106/111 looper letters, 3 selfloop transitions, 3 changer transitions 0/19 dead transitions. [2020-10-16 05:04:50,680 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 19 transitions, 59 flow [2020-10-16 05:04:50,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 05:04:50,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 05:04:50,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 282 transitions. [2020-10-16 05:04:50,697 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8468468468468469 [2020-10-16 05:04:50,698 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 282 transitions. [2020-10-16 05:04:50,699 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 282 transitions. [2020-10-16 05:04:50,701 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:04:50,704 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 282 transitions. [2020-10-16 05:04:50,708 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 05:04:50,714 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 05:04:50,715 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 05:04:50,717 INFO L185 Difference]: Start difference. First operand has 27 places, 18 transitions, 45 flow. Second operand 3 states and 282 transitions. [2020-10-16 05:04:50,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 19 transitions, 59 flow [2020-10-16 05:04:50,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 19 transitions, 56 flow, removed 0 selfloop flow, removed 3 redundant places. [2020-10-16 05:04:50,724 INFO L241 Difference]: Finished difference. Result has 27 places, 19 transitions, 59 flow [2020-10-16 05:04:50,727 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, 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=27, PETRI_TRANSITIONS=19} [2020-10-16 05:04:50,728 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 0 predicate places. [2020-10-16 05:04:50,728 INFO L481 AbstractCegarLoop]: Abstraction has has 27 places, 19 transitions, 59 flow [2020-10-16 05:04:50,728 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 05:04:50,728 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:04:50,729 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:04:50,729 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 05:04:50,729 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:04:50,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:04:50,730 INFO L82 PathProgramCache]: Analyzing trace with hash -135790335, now seen corresponding path program 1 times [2020-10-16 05:04:50,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:04:50,730 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594615454] [2020-10-16 05:04:50,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:04:50,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:04:50,813 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 05:04:50,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594615454] [2020-10-16 05:04:50,814 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:04:50,815 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 05:04:50,815 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636812729] [2020-10-16 05:04:50,816 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 05:04:50,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:04:50,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 05:04:50,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 05:04:50,819 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 111 [2020-10-16 05:04:50,820 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 19 transitions, 59 flow. Second operand 3 states. [2020-10-16 05:04:50,820 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:04:50,820 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 111 [2020-10-16 05:04:50,820 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:04:50,884 INFO L129 PetriNetUnfolder]: 29/85 cut-off events. [2020-10-16 05:04:50,885 INFO L130 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2020-10-16 05:04:50,890 INFO L80 FinitePrefix]: Finished finitePrefix Result has 174 conditions, 85 events. 29/85 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 329 event pairs, 16 based on Foata normal form. 4/81 useless extension candidates. Maximal degree in co-relation 164. Up to 44 conditions per place. [2020-10-16 05:04:50,892 INFO L132 encePairwiseOnDemand]: 108/111 looper letters, 6 selfloop transitions, 2 changer transitions 0/21 dead transitions. [2020-10-16 05:04:50,893 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 21 transitions, 79 flow [2020-10-16 05:04:50,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 05:04:50,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 05:04:50,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 273 transitions. [2020-10-16 05:04:50,901 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8198198198198198 [2020-10-16 05:04:50,901 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 273 transitions. [2020-10-16 05:04:50,901 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 273 transitions. [2020-10-16 05:04:50,902 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:04:50,902 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 273 transitions. [2020-10-16 05:04:50,905 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 05:04:50,907 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 05:04:50,908 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 05:04:50,908 INFO L185 Difference]: Start difference. First operand has 27 places, 19 transitions, 59 flow. Second operand 3 states and 273 transitions. [2020-10-16 05:04:50,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 21 transitions, 79 flow [2020-10-16 05:04:50,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 21 transitions, 76 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 05:04:50,910 INFO L241 Difference]: Finished difference. Result has 29 places, 19 transitions, 64 flow [2020-10-16 05:04:50,910 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=26, 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=29, PETRI_TRANSITIONS=19} [2020-10-16 05:04:50,911 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 2 predicate places. [2020-10-16 05:04:50,911 INFO L481 AbstractCegarLoop]: Abstraction has has 29 places, 19 transitions, 64 flow [2020-10-16 05:04:50,912 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 05:04:50,912 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:04:50,912 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:04:50,912 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 05:04:50,912 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:04:50,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:04:50,913 INFO L82 PathProgramCache]: Analyzing trace with hash -201967492, now seen corresponding path program 1 times [2020-10-16 05:04:50,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:04:50,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310137021] [2020-10-16 05:04:50,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:04:50,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:04:50,978 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 05:04:50,978 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310137021] [2020-10-16 05:04:50,979 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:04:50,979 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 05:04:50,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888827343] [2020-10-16 05:04:50,980 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 05:04:50,980 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:04:50,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 05:04:50,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 05:04:50,982 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 111 [2020-10-16 05:04:50,982 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 19 transitions, 64 flow. Second operand 3 states. [2020-10-16 05:04:50,983 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:04:50,983 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 111 [2020-10-16 05:04:50,983 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:04:51,008 INFO L129 PetriNetUnfolder]: 17/56 cut-off events. [2020-10-16 05:04:51,008 INFO L130 PetriNetUnfolder]: For 37/49 co-relation queries the response was YES. [2020-10-16 05:04:51,009 INFO L80 FinitePrefix]: Finished finitePrefix Result has 130 conditions, 56 events. 17/56 cut-off events. For 37/49 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 183 event pairs, 11 based on Foata normal form. 7/57 useless extension candidates. Maximal degree in co-relation 118. Up to 25 conditions per place. [2020-10-16 05:04:51,009 INFO L132 encePairwiseOnDemand]: 108/111 looper letters, 6 selfloop transitions, 2 changer transitions 0/21 dead transitions. [2020-10-16 05:04:51,010 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 21 transitions, 84 flow [2020-10-16 05:04:51,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 05:04:51,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 05:04:51,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 273 transitions. [2020-10-16 05:04:51,012 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8198198198198198 [2020-10-16 05:04:51,012 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 273 transitions. [2020-10-16 05:04:51,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 273 transitions. [2020-10-16 05:04:51,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:04:51,013 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 273 transitions. [2020-10-16 05:04:51,013 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 05:04:51,014 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 05:04:51,015 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 05:04:51,015 INFO L185 Difference]: Start difference. First operand has 29 places, 19 transitions, 64 flow. Second operand 3 states and 273 transitions. [2020-10-16 05:04:51,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 21 transitions, 84 flow [2020-10-16 05:04:51,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 21 transitions, 80 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 05:04:51,017 INFO L241 Difference]: Finished difference. Result has 30 places, 19 transitions, 68 flow [2020-10-16 05:04:51,017 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=60, 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=68, PETRI_PLACES=30, PETRI_TRANSITIONS=19} [2020-10-16 05:04:51,017 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 3 predicate places. [2020-10-16 05:04:51,018 INFO L481 AbstractCegarLoop]: Abstraction has has 30 places, 19 transitions, 68 flow [2020-10-16 05:04:51,018 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 05:04:51,018 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:04:51,018 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:04:51,018 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 05:04:51,018 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:04:51,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:04:51,019 INFO L82 PathProgramCache]: Analyzing trace with hash 1971283482, now seen corresponding path program 1 times [2020-10-16 05:04:51,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:04:51,020 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982456885] [2020-10-16 05:04:51,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:04:51,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:04:51,064 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 05:04:51,065 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982456885] [2020-10-16 05:04:51,065 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:04:51,065 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 05:04:51,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463263506] [2020-10-16 05:04:51,066 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 05:04:51,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:04:51,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 05:04:51,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 05:04:51,068 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 111 [2020-10-16 05:04:51,068 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 19 transitions, 68 flow. Second operand 3 states. [2020-10-16 05:04:51,069 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:04:51,069 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 111 [2020-10-16 05:04:51,069 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:04:51,081 INFO L129 PetriNetUnfolder]: 3/24 cut-off events. [2020-10-16 05:04:51,081 INFO L130 PetriNetUnfolder]: For 33/37 co-relation queries the response was YES. [2020-10-16 05:04:51,081 INFO L80 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 24 events. 3/24 cut-off events. For 33/37 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 39 event pairs, 1 based on Foata normal form. 1/25 useless extension candidates. Maximal degree in co-relation 49. Up to 10 conditions per place. [2020-10-16 05:04:51,082 INFO L132 encePairwiseOnDemand]: 108/111 looper letters, 1 selfloop transitions, 2 changer transitions 0/19 dead transitions. [2020-10-16 05:04:51,082 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 19 transitions, 74 flow [2020-10-16 05:04:51,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 05:04:51,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 05:04:51,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 283 transitions. [2020-10-16 05:04:51,088 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8498498498498499 [2020-10-16 05:04:51,088 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 283 transitions. [2020-10-16 05:04:51,088 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 283 transitions. [2020-10-16 05:04:51,104 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:04:51,104 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 283 transitions. [2020-10-16 05:04:51,105 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 05:04:51,106 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 05:04:51,106 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 05:04:51,106 INFO L185 Difference]: Start difference. First operand has 30 places, 19 transitions, 68 flow. Second operand 3 states and 283 transitions. [2020-10-16 05:04:51,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 19 transitions, 74 flow [2020-10-16 05:04:51,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 19 transitions, 70 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 05:04:51,108 INFO L241 Difference]: Finished difference. Result has 31 places, 19 transitions, 72 flow [2020-10-16 05:04:51,108 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=28, 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=72, PETRI_PLACES=31, PETRI_TRANSITIONS=19} [2020-10-16 05:04:51,108 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 4 predicate places. [2020-10-16 05:04:51,109 INFO L481 AbstractCegarLoop]: Abstraction has has 31 places, 19 transitions, 72 flow [2020-10-16 05:04:51,109 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 05:04:51,109 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:04:51,109 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:04:51,109 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 05:04:51,109 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:04:51,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:04:51,110 INFO L82 PathProgramCache]: Analyzing trace with hash 980225973, now seen corresponding path program 1 times [2020-10-16 05:04:51,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:04:51,110 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612207690] [2020-10-16 05:04:51,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:04:51,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:04:51,177 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 05:04:51,177 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612207690] [2020-10-16 05:04:51,178 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:04:51,178 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 05:04:51,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507337280] [2020-10-16 05:04:51,179 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:04:51,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:04:51,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:04:51,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:04:51,181 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 111 [2020-10-16 05:04:51,181 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 19 transitions, 72 flow. Second operand 4 states. [2020-10-16 05:04:51,181 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:04:51,181 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 111 [2020-10-16 05:04:51,182 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:04:51,235 INFO L129 PetriNetUnfolder]: 42/96 cut-off events. [2020-10-16 05:04:51,235 INFO L130 PetriNetUnfolder]: For 243/264 co-relation queries the response was YES. [2020-10-16 05:04:51,237 INFO L80 FinitePrefix]: Finished finitePrefix Result has 254 conditions, 96 events. 42/96 cut-off events. For 243/264 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 350 event pairs, 18 based on Foata normal form. 16/105 useless extension candidates. Maximal degree in co-relation 240. Up to 61 conditions per place. [2020-10-16 05:04:51,238 INFO L132 encePairwiseOnDemand]: 105/111 looper letters, 7 selfloop transitions, 7 changer transitions 2/29 dead transitions. [2020-10-16 05:04:51,238 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 29 transitions, 124 flow [2020-10-16 05:04:51,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 05:04:51,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-16 05:04:51,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 418 transitions. [2020-10-16 05:04:51,241 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7531531531531531 [2020-10-16 05:04:51,241 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 418 transitions. [2020-10-16 05:04:51,241 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 418 transitions. [2020-10-16 05:04:51,241 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:04:51,242 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 418 transitions. [2020-10-16 05:04:51,243 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 6 states. [2020-10-16 05:04:51,244 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 6 states. [2020-10-16 05:04:51,244 INFO L81 ComplementDD]: Finished complementDD. Result 6 states. [2020-10-16 05:04:51,244 INFO L185 Difference]: Start difference. First operand has 31 places, 19 transitions, 72 flow. Second operand 5 states and 418 transitions. [2020-10-16 05:04:51,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 29 transitions, 124 flow [2020-10-16 05:04:51,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 29 transitions, 120 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 05:04:51,247 INFO L241 Difference]: Finished difference. Result has 36 places, 25 transitions, 122 flow [2020-10-16 05:04:51,248 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=122, PETRI_PLACES=36, PETRI_TRANSITIONS=25} [2020-10-16 05:04:51,248 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 9 predicate places. [2020-10-16 05:04:51,248 INFO L481 AbstractCegarLoop]: Abstraction has has 36 places, 25 transitions, 122 flow [2020-10-16 05:04:51,248 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:04:51,248 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:04:51,249 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:04:51,249 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 05:04:51,249 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:04:51,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:04:51,250 INFO L82 PathProgramCache]: Analyzing trace with hash 2055609306, now seen corresponding path program 1 times [2020-10-16 05:04:51,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:04:51,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028120788] [2020-10-16 05:04:51,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:04:51,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:04:51,292 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 05:04:51,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028120788] [2020-10-16 05:04:51,292 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:04:51,293 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 05:04:51,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776612593] [2020-10-16 05:04:51,293 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:04:51,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:04:51,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:04:51,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:04:51,295 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 111 [2020-10-16 05:04:51,295 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 25 transitions, 122 flow. Second operand 4 states. [2020-10-16 05:04:51,295 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:04:51,296 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 111 [2020-10-16 05:04:51,296 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:04:51,356 INFO L129 PetriNetUnfolder]: 88/215 cut-off events. [2020-10-16 05:04:51,356 INFO L130 PetriNetUnfolder]: For 858/932 co-relation queries the response was YES. [2020-10-16 05:04:51,358 INFO L80 FinitePrefix]: Finished finitePrefix Result has 681 conditions, 215 events. 88/215 cut-off events. For 858/932 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 1157 event pairs, 32 based on Foata normal form. 31/226 useless extension candidates. Maximal degree in co-relation 664. Up to 136 conditions per place. [2020-10-16 05:04:51,360 INFO L132 encePairwiseOnDemand]: 107/111 looper letters, 6 selfloop transitions, 3 changer transitions 1/29 dead transitions. [2020-10-16 05:04:51,361 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 29 transitions, 152 flow [2020-10-16 05:04:51,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 05:04:51,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 05:04:51,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 347 transitions. [2020-10-16 05:04:51,363 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7815315315315315 [2020-10-16 05:04:51,363 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 347 transitions. [2020-10-16 05:04:51,363 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 347 transitions. [2020-10-16 05:04:51,363 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:04:51,364 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 347 transitions. [2020-10-16 05:04:51,365 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 05:04:51,366 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 05:04:51,366 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 05:04:51,366 INFO L185 Difference]: Start difference. First operand has 36 places, 25 transitions, 122 flow. Second operand 4 states and 347 transitions. [2020-10-16 05:04:51,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 29 transitions, 152 flow [2020-10-16 05:04:51,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 29 transitions, 148 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 05:04:51,371 INFO L241 Difference]: Finished difference. Result has 39 places, 25 transitions, 128 flow [2020-10-16 05:04:51,371 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=128, PETRI_PLACES=39, PETRI_TRANSITIONS=25} [2020-10-16 05:04:51,372 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 12 predicate places. [2020-10-16 05:04:51,372 INFO L481 AbstractCegarLoop]: Abstraction has has 39 places, 25 transitions, 128 flow [2020-10-16 05:04:51,372 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:04:51,372 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:04:51,372 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:04:51,372 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 05:04:51,373 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:04:51,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:04:51,373 INFO L82 PathProgramCache]: Analyzing trace with hash 1154321482, now seen corresponding path program 2 times [2020-10-16 05:04:51,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:04:51,374 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366677514] [2020-10-16 05:04:51,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:04:51,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:04:51,436 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 05:04:51,436 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366677514] [2020-10-16 05:04:51,436 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:04:51,437 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:04:51,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061658400] [2020-10-16 05:04:51,438 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 05:04:51,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:04:51,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 05:04:51,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 05:04:51,440 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 111 [2020-10-16 05:04:51,445 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 25 transitions, 128 flow. Second operand 5 states. [2020-10-16 05:04:51,446 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:04:51,446 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 111 [2020-10-16 05:04:51,446 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:04:51,523 INFO L129 PetriNetUnfolder]: 25/76 cut-off events. [2020-10-16 05:04:51,523 INFO L130 PetriNetUnfolder]: For 534/609 co-relation queries the response was YES. [2020-10-16 05:04:51,524 INFO L80 FinitePrefix]: Finished finitePrefix Result has 306 conditions, 76 events. 25/76 cut-off events. For 534/609 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 273 event pairs, 3 based on Foata normal form. 40/112 useless extension candidates. Maximal degree in co-relation 287. Up to 52 conditions per place. [2020-10-16 05:04:51,524 INFO L132 encePairwiseOnDemand]: 105/111 looper letters, 5 selfloop transitions, 13 changer transitions 4/35 dead transitions. [2020-10-16 05:04:51,525 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 35 transitions, 230 flow [2020-10-16 05:04:51,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 05:04:51,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-16 05:04:51,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 584 transitions. [2020-10-16 05:04:51,527 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7516087516087516 [2020-10-16 05:04:51,527 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 584 transitions. [2020-10-16 05:04:51,527 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 584 transitions. [2020-10-16 05:04:51,528 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:04:51,528 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 584 transitions. [2020-10-16 05:04:51,530 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-16 05:04:51,531 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-16 05:04:51,531 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-16 05:04:51,531 INFO L185 Difference]: Start difference. First operand has 39 places, 25 transitions, 128 flow. Second operand 7 states and 584 transitions. [2020-10-16 05:04:51,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 35 transitions, 230 flow [2020-10-16 05:04:51,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 35 transitions, 218 flow, removed 2 selfloop flow, removed 4 redundant places. [2020-10-16 05:04:51,534 INFO L241 Difference]: Finished difference. Result has 44 places, 31 transitions, 204 flow [2020-10-16 05:04:51,535 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=204, PETRI_PLACES=44, PETRI_TRANSITIONS=31} [2020-10-16 05:04:51,535 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 17 predicate places. [2020-10-16 05:04:51,535 INFO L481 AbstractCegarLoop]: Abstraction has has 44 places, 31 transitions, 204 flow [2020-10-16 05:04:51,535 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 05:04:51,535 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:04:51,536 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:04:51,536 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 05:04:51,536 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:04:51,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:04:51,536 INFO L82 PathProgramCache]: Analyzing trace with hash 980865761, now seen corresponding path program 1 times [2020-10-16 05:04:51,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:04:51,537 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745372738] [2020-10-16 05:04:51,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:04:51,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:04:51,562 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 05:04:51,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745372738] [2020-10-16 05:04:51,562 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:04:51,563 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 05:04:51,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820289187] [2020-10-16 05:04:51,563 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 05:04:51,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:04:51,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 05:04:51,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 05:04:51,565 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 111 [2020-10-16 05:04:51,565 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 31 transitions, 204 flow. Second operand 3 states. [2020-10-16 05:04:51,565 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:04:51,565 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 111 [2020-10-16 05:04:51,566 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:04:51,585 INFO L129 PetriNetUnfolder]: 23/87 cut-off events. [2020-10-16 05:04:51,586 INFO L130 PetriNetUnfolder]: For 512/579 co-relation queries the response was YES. [2020-10-16 05:04:51,586 INFO L80 FinitePrefix]: Finished finitePrefix Result has 380 conditions, 87 events. 23/87 cut-off events. For 512/579 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 372 event pairs, 3 based on Foata normal form. 11/94 useless extension candidates. Maximal degree in co-relation 360. Up to 64 conditions per place. [2020-10-16 05:04:51,587 INFO L132 encePairwiseOnDemand]: 108/111 looper letters, 3 selfloop transitions, 3 changer transitions 6/31 dead transitions. [2020-10-16 05:04:51,587 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 31 transitions, 216 flow [2020-10-16 05:04:51,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 05:04:51,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 05:04:51,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 279 transitions. [2020-10-16 05:04:51,589 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8378378378378378 [2020-10-16 05:04:51,589 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 279 transitions. [2020-10-16 05:04:51,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 279 transitions. [2020-10-16 05:04:51,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:04:51,590 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 279 transitions. [2020-10-16 05:04:51,590 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 05:04:51,591 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 05:04:51,591 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 05:04:51,591 INFO L185 Difference]: Start difference. First operand has 44 places, 31 transitions, 204 flow. Second operand 3 states and 279 transitions. [2020-10-16 05:04:51,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 31 transitions, 216 flow [2020-10-16 05:04:51,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 31 transitions, 186 flow, removed 11 selfloop flow, removed 2 redundant places. [2020-10-16 05:04:51,595 INFO L241 Difference]: Finished difference. Result has 45 places, 25 transitions, 145 flow [2020-10-16 05:04:51,595 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=145, PETRI_PLACES=45, PETRI_TRANSITIONS=25} [2020-10-16 05:04:51,596 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 18 predicate places. [2020-10-16 05:04:51,596 INFO L481 AbstractCegarLoop]: Abstraction has has 45 places, 25 transitions, 145 flow [2020-10-16 05:04:51,596 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 05:04:51,596 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:04:51,596 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:04:51,596 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 05:04:51,597 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:04:51,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:04:51,597 INFO L82 PathProgramCache]: Analyzing trace with hash 1436437043, now seen corresponding path program 1 times [2020-10-16 05:04:51,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:04:51,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931976830] [2020-10-16 05:04:51,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:04:51,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:04:51,654 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 05:04:51,654 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931976830] [2020-10-16 05:04:51,654 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:04:51,654 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:04:51,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960881368] [2020-10-16 05:04:51,655 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:04:51,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:04:51,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:04:51,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:04:51,657 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 111 [2020-10-16 05:04:51,658 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 25 transitions, 145 flow. Second operand 4 states. [2020-10-16 05:04:51,658 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:04:51,658 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 111 [2020-10-16 05:04:51,658 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:04:51,714 INFO L129 PetriNetUnfolder]: 42/126 cut-off events. [2020-10-16 05:04:51,714 INFO L130 PetriNetUnfolder]: For 576/589 co-relation queries the response was YES. [2020-10-16 05:04:51,715 INFO L80 FinitePrefix]: Finished finitePrefix Result has 462 conditions, 126 events. 42/126 cut-off events. For 576/589 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 535 event pairs, 7 based on Foata normal form. 11/131 useless extension candidates. Maximal degree in co-relation 441. Up to 62 conditions per place. [2020-10-16 05:04:51,716 INFO L132 encePairwiseOnDemand]: 108/111 looper letters, 6 selfloop transitions, 2 changer transitions 1/28 dead transitions. [2020-10-16 05:04:51,716 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 28 transitions, 173 flow [2020-10-16 05:04:51,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 05:04:51,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 05:04:51,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 346 transitions. [2020-10-16 05:04:51,719 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7792792792792793 [2020-10-16 05:04:51,719 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 346 transitions. [2020-10-16 05:04:51,719 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 346 transitions. [2020-10-16 05:04:51,719 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:04:51,719 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 346 transitions. [2020-10-16 05:04:51,720 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 05:04:51,721 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 05:04:51,722 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 05:04:51,722 INFO L185 Difference]: Start difference. First operand has 45 places, 25 transitions, 145 flow. Second operand 4 states and 346 transitions. [2020-10-16 05:04:51,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 28 transitions, 173 flow [2020-10-16 05:04:51,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 28 transitions, 160 flow, removed 5 selfloop flow, removed 4 redundant places. [2020-10-16 05:04:51,725 INFO L241 Difference]: Finished difference. Result has 42 places, 26 transitions, 145 flow [2020-10-16 05:04:51,725 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=145, PETRI_PLACES=42, PETRI_TRANSITIONS=26} [2020-10-16 05:04:51,725 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 15 predicate places. [2020-10-16 05:04:51,725 INFO L481 AbstractCegarLoop]: Abstraction has has 42 places, 26 transitions, 145 flow [2020-10-16 05:04:51,725 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:04:51,726 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:04:51,726 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:04:51,726 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-16 05:04:51,728 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:04:51,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:04:51,729 INFO L82 PathProgramCache]: Analyzing trace with hash -1641346049, now seen corresponding path program 2 times [2020-10-16 05:04:51,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:04:51,729 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038729689] [2020-10-16 05:04:51,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:04:51,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:04:51,798 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 05:04:51,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038729689] [2020-10-16 05:04:51,799 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:04:51,799 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:04:51,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304403121] [2020-10-16 05:04:51,800 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:04:51,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:04:51,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:04:51,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:04:51,801 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 111 [2020-10-16 05:04:51,801 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 26 transitions, 145 flow. Second operand 4 states. [2020-10-16 05:04:51,802 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:04:51,802 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 111 [2020-10-16 05:04:51,802 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:04:51,853 INFO L129 PetriNetUnfolder]: 48/152 cut-off events. [2020-10-16 05:04:51,853 INFO L130 PetriNetUnfolder]: For 355/374 co-relation queries the response was YES. [2020-10-16 05:04:51,854 INFO L80 FinitePrefix]: Finished finitePrefix Result has 516 conditions, 152 events. 48/152 cut-off events. For 355/374 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 748 event pairs, 6 based on Foata normal form. 9/156 useless extension candidates. Maximal degree in co-relation 496. Up to 74 conditions per place. [2020-10-16 05:04:51,854 INFO L132 encePairwiseOnDemand]: 107/111 looper letters, 6 selfloop transitions, 2 changer transitions 5/31 dead transitions. [2020-10-16 05:04:51,855 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 31 transitions, 191 flow [2020-10-16 05:04:51,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 05:04:51,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-16 05:04:51,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 432 transitions. [2020-10-16 05:04:51,857 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7783783783783784 [2020-10-16 05:04:51,857 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 432 transitions. [2020-10-16 05:04:51,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 432 transitions. [2020-10-16 05:04:51,858 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:04:51,858 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 432 transitions. [2020-10-16 05:04:51,859 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 6 states. [2020-10-16 05:04:51,860 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 6 states. [2020-10-16 05:04:51,860 INFO L81 ComplementDD]: Finished complementDD. Result 6 states. [2020-10-16 05:04:51,860 INFO L185 Difference]: Start difference. First operand has 42 places, 26 transitions, 145 flow. Second operand 5 states and 432 transitions. [2020-10-16 05:04:51,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 31 transitions, 191 flow [2020-10-16 05:04:51,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 31 transitions, 183 flow, removed 3 selfloop flow, removed 1 redundant places. [2020-10-16 05:04:51,863 INFO L241 Difference]: Finished difference. Result has 47 places, 25 transitions, 142 flow [2020-10-16 05:04:51,864 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=142, PETRI_PLACES=47, PETRI_TRANSITIONS=25} [2020-10-16 05:04:51,864 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 20 predicate places. [2020-10-16 05:04:51,864 INFO L481 AbstractCegarLoop]: Abstraction has has 47 places, 25 transitions, 142 flow [2020-10-16 05:04:51,864 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:04:51,864 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:04:51,865 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:04:51,865 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-16 05:04:51,865 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:04:51,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:04:51,865 INFO L82 PathProgramCache]: Analyzing trace with hash 1693034047, now seen corresponding path program 3 times [2020-10-16 05:04:51,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:04:51,870 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977221713] [2020-10-16 05:04:51,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:04:51,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:04:51,949 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 05:04:51,950 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977221713] [2020-10-16 05:04:51,950 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:04:51,950 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 05:04:51,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744281843] [2020-10-16 05:04:51,951 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 05:04:51,951 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:04:51,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 05:04:51,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-16 05:04:51,952 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 111 [2020-10-16 05:04:51,953 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 25 transitions, 142 flow. Second operand 6 states. [2020-10-16 05:04:51,953 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:04:51,953 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 111 [2020-10-16 05:04:51,953 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:04:52,001 INFO L129 PetriNetUnfolder]: 15/70 cut-off events. [2020-10-16 05:04:52,002 INFO L130 PetriNetUnfolder]: For 123/181 co-relation queries the response was YES. [2020-10-16 05:04:52,002 INFO L80 FinitePrefix]: Finished finitePrefix Result has 272 conditions, 70 events. 15/70 cut-off events. For 123/181 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 269 event pairs, 0 based on Foata normal form. 29/95 useless extension candidates. Maximal degree in co-relation 257. Up to 37 conditions per place. [2020-10-16 05:04:52,002 INFO L132 encePairwiseOnDemand]: 105/111 looper letters, 0 selfloop transitions, 0 changer transitions 27/27 dead transitions. [2020-10-16 05:04:52,003 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 27 transitions, 170 flow [2020-10-16 05:04:52,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 05:04:52,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-16 05:04:52,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 574 transitions. [2020-10-16 05:04:52,005 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7387387387387387 [2020-10-16 05:04:52,005 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 574 transitions. [2020-10-16 05:04:52,005 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 574 transitions. [2020-10-16 05:04:52,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:04:52,006 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 574 transitions. [2020-10-16 05:04:52,007 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-16 05:04:52,009 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-16 05:04:52,009 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-16 05:04:52,009 INFO L185 Difference]: Start difference. First operand has 47 places, 25 transitions, 142 flow. Second operand 7 states and 574 transitions. [2020-10-16 05:04:52,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 27 transitions, 170 flow [2020-10-16 05:04:52,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 27 transitions, 158 flow, removed 0 selfloop flow, removed 6 redundant places. [2020-10-16 05:04:52,011 INFO L241 Difference]: Finished difference. Result has 44 places, 0 transitions, 0 flow [2020-10-16 05:04:52,011 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=44, PETRI_TRANSITIONS=0} [2020-10-16 05:04:52,011 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 17 predicate places. [2020-10-16 05:04:52,011 INFO L481 AbstractCegarLoop]: Abstraction has has 44 places, 0 transitions, 0 flow [2020-10-16 05:04:52,012 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 05:04:52,012 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-16 05:04:52,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 05:04:52 BasicIcfg [2020-10-16 05:04:52,016 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 05:04:52,019 INFO L168 Benchmark]: Toolchain (without parser) took 4303.06 ms. Allocated memory was 245.9 MB in the beginning and 365.4 MB in the end (delta: 119.5 MB). Free memory was 201.0 MB in the beginning and 189.3 MB in the end (delta: 11.7 MB). Peak memory consumption was 131.2 MB. Max. memory is 14.2 GB. [2020-10-16 05:04:52,019 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 245.9 MB. Free memory is still 222.3 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 05:04:52,020 INFO L168 Benchmark]: CACSL2BoogieTranslator took 634.04 ms. Allocated memory was 245.9 MB in the beginning and 298.8 MB in the end (delta: 53.0 MB). Free memory was 201.0 MB in the beginning and 252.0 MB in the end (delta: -51.0 MB). Peak memory consumption was 29.4 MB. Max. memory is 14.2 GB. [2020-10-16 05:04:52,021 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.96 ms. Allocated memory is still 298.8 MB. Free memory was 252.0 MB in the beginning and 249.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 05:04:52,022 INFO L168 Benchmark]: Boogie Preprocessor took 28.01 ms. Allocated memory is still 298.8 MB. Free memory was 249.5 MB in the beginning and 247.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 05:04:52,022 INFO L168 Benchmark]: RCFGBuilder took 448.44 ms. Allocated memory is still 298.8 MB. Free memory was 247.0 MB in the beginning and 225.2 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. [2020-10-16 05:04:52,023 INFO L168 Benchmark]: TraceAbstraction took 3138.12 ms. Allocated memory was 298.8 MB in the beginning and 365.4 MB in the end (delta: 66.6 MB). Free memory was 225.2 MB in the beginning and 189.3 MB in the end (delta: 35.8 MB). Peak memory consumption was 102.4 MB. Max. memory is 14.2 GB. [2020-10-16 05:04:52,027 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 245.9 MB. Free memory is still 222.3 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 634.04 ms. Allocated memory was 245.9 MB in the beginning and 298.8 MB in the end (delta: 53.0 MB). Free memory was 201.0 MB in the beginning and 252.0 MB in the end (delta: -51.0 MB). Peak memory consumption was 29.4 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 48.96 ms. Allocated memory is still 298.8 MB. Free memory was 252.0 MB in the beginning and 249.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 28.01 ms. Allocated memory is still 298.8 MB. Free memory was 249.5 MB in the beginning and 247.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 448.44 ms. Allocated memory is still 298.8 MB. Free memory was 247.0 MB in the beginning and 225.2 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. * TraceAbstraction took 3138.12 ms. Allocated memory was 298.8 MB in the beginning and 365.4 MB in the end (delta: 66.6 MB). Free memory was 225.2 MB in the beginning and 189.3 MB in the end (delta: 35.8 MB). Peak memory consumption was 102.4 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 576 VarBasedMoverChecksPositive, 55 VarBasedMoverChecksNegative, 11 SemBasedMoverChecksPositive, 44 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 79 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.2s, 64 PlacesBefore, 27 PlacesAfterwards, 55 TransitionsBefore, 18 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 5 FixpointIterations, 13 TrivialSequentialCompositions, 24 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 0 ChoiceCompositions, 42 TotalNumberOfCompositions, 1770 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: 3.0s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.3s, HoareTripleCheckerStatistics: 49 SDtfs, 23 SDslu, 16 SDs, 0 SdLazy, 132 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=204occurred 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, 0.5s InterpolantComputationTime, 135 NumberOfCodeBlocks, 135 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 124 ConstructedInterpolants, 0 QuantifiedInterpolants, 3822 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...