/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/safe033_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-16 05:11:05,148 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 05:11:05,152 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 05:11:05,189 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 05:11:05,190 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 05:11:05,198 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 05:11:05,201 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 05:11:05,205 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 05:11:05,208 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 05:11:05,212 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 05:11:05,213 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 05:11:05,214 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 05:11:05,214 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 05:11:05,217 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 05:11:05,220 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 05:11:05,221 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 05:11:05,223 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 05:11:05,224 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 05:11:05,225 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 05:11:05,235 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 05:11:05,237 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 05:11:05,238 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 05:11:05,239 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 05:11:05,240 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 05:11:05,252 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 05:11:05,254 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 05:11:05,254 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 05:11:05,255 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 05:11:05,255 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 05:11:05,258 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 05:11:05,259 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 05:11:05,259 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 05:11:05,263 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 05:11:05,264 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 05:11:05,265 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 05:11:05,265 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 05:11:05,266 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 05:11:05,266 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 05:11:05,266 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 05:11:05,270 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 05:11:05,271 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 05:11:05,273 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 05:11:05,303 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 05:11:05,303 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 05:11:05,304 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 05:11:05,304 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 05:11:05,305 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 05:11:05,305 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 05:11:05,305 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 05:11:05,305 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 05:11:05,305 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 05:11:05,306 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 05:11:05,306 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 05:11:05,306 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 05:11:05,306 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 05:11:05,306 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 05:11:05,307 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 05:11:05,307 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 05:11:05,307 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 05:11:05,307 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 05:11:05,307 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 05:11:05,308 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 05:11:05,308 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 05:11:05,308 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 05:11:05,308 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 05:11:05,308 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 05:11:05,309 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 05:11:05,309 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 05:11:05,311 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 05:11:05,311 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-16 05:11:05,311 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 05:11:05,624 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 05:11:05,635 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 05:11:05,638 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 05:11:05,640 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 05:11:05,640 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 05:11:05,641 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe033_tso.oepc.i [2020-10-16 05:11:05,704 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/216abe579/a640f5b4db3645759696142a6f28b005/FLAG354715ec9 [2020-10-16 05:11:06,232 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 05:11:06,232 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe033_tso.oepc.i [2020-10-16 05:11:06,257 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/216abe579/a640f5b4db3645759696142a6f28b005/FLAG354715ec9 [2020-10-16 05:11:06,524 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/216abe579/a640f5b4db3645759696142a6f28b005 [2020-10-16 05:11:06,532 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 05:11:06,534 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 05:11:06,536 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 05:11:06,536 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 05:11:06,540 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 05:11:06,541 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:11:06" (1/1) ... [2020-10-16 05:11:06,545 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1eb40d40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:11:06, skipping insertion in model container [2020-10-16 05:11:06,545 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:11:06" (1/1) ... [2020-10-16 05:11:06,554 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 05:11:06,620 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 05:11:07,126 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 05:11:07,138 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 05:11:07,181 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 05:11:07,260 INFO L208 MainTranslator]: Completed translation [2020-10-16 05:11:07,261 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:11:07 WrapperNode [2020-10-16 05:11:07,261 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 05:11:07,262 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 05:11:07,262 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 05:11:07,262 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 05:11:07,272 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:11:07" (1/1) ... [2020-10-16 05:11:07,288 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:11:07" (1/1) ... [2020-10-16 05:11:07,311 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 05:11:07,312 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 05:11:07,312 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 05:11:07,312 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 05:11:07,322 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:11:07" (1/1) ... [2020-10-16 05:11:07,322 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:11:07" (1/1) ... [2020-10-16 05:11:07,325 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:11:07" (1/1) ... [2020-10-16 05:11:07,326 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:11:07" (1/1) ... [2020-10-16 05:11:07,331 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:11:07" (1/1) ... [2020-10-16 05:11:07,333 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:11:07" (1/1) ... [2020-10-16 05:11:07,335 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:11:07" (1/1) ... [2020-10-16 05:11:07,338 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 05:11:07,339 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 05:11:07,339 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 05:11:07,339 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 05:11:07,340 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:11:07" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 05:11:07,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 05:11:07,409 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 05:11:07,409 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 05:11:07,410 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 05:11:07,410 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 05:11:07,410 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 05:11:07,410 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 05:11:07,410 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 05:11:07,410 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 05:11:07,411 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 05:11:07,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 05:11:07,413 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 05:11:07,788 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 05:11:07,788 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 05:11:07,790 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:11:07 BoogieIcfgContainer [2020-10-16 05:11:07,791 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 05:11:07,793 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 05:11:07,794 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 05:11:07,797 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 05:11:07,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 05:11:06" (1/3) ... [2020-10-16 05:11:07,798 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f9a83e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:11:07, skipping insertion in model container [2020-10-16 05:11:07,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:11:07" (2/3) ... [2020-10-16 05:11:07,799 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f9a83e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:11:07, skipping insertion in model container [2020-10-16 05:11:07,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:11:07" (3/3) ... [2020-10-16 05:11:07,803 INFO L111 eAbstractionObserver]: Analyzing ICFG safe033_tso.oepc.i [2020-10-16 05:11:07,815 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 05:11:07,822 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 05:11:07,824 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 05:11:07,850 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:11:07,851 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:11:07,851 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:11:07,851 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:11:07,852 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:11:07,853 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:11:07,853 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:11:07,853 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:11:07,853 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:11:07,854 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:11:07,854 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:11:07,854 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:11:07,858 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:11:07,858 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:11:07,859 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:11:07,859 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:11:07,865 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:11:07,865 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:11:07,865 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:11:07,866 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:11:07,884 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-16 05:11:07,905 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 05:11:07,905 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 05:11:07,905 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 05:11:07,906 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 05:11:07,906 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 05:11:07,906 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 05:11:07,906 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 05:11:07,906 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 05:11:07,920 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 60 places, 55 transitions, 120 flow [2020-10-16 05:11:07,962 INFO L129 PetriNetUnfolder]: 2/53 cut-off events. [2020-10-16 05:11:07,962 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:11:07,967 INFO L80 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 53 events. 2/53 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 32 event pairs, 0 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2020-10-16 05:11:07,967 INFO L82 GeneralOperation]: Start removeDead. Operand has 60 places, 55 transitions, 120 flow [2020-10-16 05:11:07,972 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 50 places, 44 transitions, 94 flow [2020-10-16 05:11:07,975 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 05:11:07,977 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 50 places, 44 transitions, 94 flow [2020-10-16 05:11:07,980 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 50 places, 44 transitions, 94 flow [2020-10-16 05:11:07,981 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 50 places, 44 transitions, 94 flow [2020-10-16 05:11:07,998 INFO L129 PetriNetUnfolder]: 1/44 cut-off events. [2020-10-16 05:11:07,999 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:11:08,001 INFO L80 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 44 events. 1/44 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 32 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 32. Up to 2 conditions per place. [2020-10-16 05:11:08,003 INFO L117 LiptonReduction]: Number of co-enabled transitions 456 [2020-10-16 05:11:09,158 INFO L132 LiptonReduction]: Checked pairs total: 900 [2020-10-16 05:11:09,158 INFO L134 LiptonReduction]: Total number of compositions: 37 [2020-10-16 05:11:09,161 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1188 [2020-10-16 05:11:09,168 INFO L129 PetriNetUnfolder]: 0/6 cut-off events. [2020-10-16 05:11:09,168 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:11:09,168 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:11:09,169 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2020-10-16 05:11:09,170 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:11:09,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:11:09,176 INFO L82 PathProgramCache]: Analyzing trace with hash 189686472, now seen corresponding path program 1 times [2020-10-16 05:11:09,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:11:09,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871719944] [2020-10-16 05:11:09,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:11:09,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:11:09,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:11:09,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871719944] [2020-10-16 05:11:09,357 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:11:09,357 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 05:11:09,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068753364] [2020-10-16 05:11:09,368 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-16 05:11:09,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:11:09,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-16 05:11:09,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-16 05:11:09,387 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 92 [2020-10-16 05:11:09,388 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 13 transitions, 32 flow. Second operand 2 states. [2020-10-16 05:11:09,388 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:11:09,389 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 92 [2020-10-16 05:11:09,390 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:11:09,399 INFO L129 PetriNetUnfolder]: 0/12 cut-off events. [2020-10-16 05:11:09,399 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:11:09,399 INFO L80 FinitePrefix]: Finished finitePrefix Result has 20 conditions, 12 events. 0/12 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 13 event pairs, 0 based on Foata normal form. 1/13 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2020-10-16 05:11:09,400 INFO L132 encePairwiseOnDemand]: 91/92 looper letters, 0 selfloop transitions, 0 changer transitions 0/12 dead transitions. [2020-10-16 05:11:09,401 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 12 transitions, 30 flow [2020-10-16 05:11:09,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-16 05:11:09,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-10-16 05:11:09,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 171 transitions. [2020-10-16 05:11:09,415 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.9293478260869565 [2020-10-16 05:11:09,416 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 171 transitions. [2020-10-16 05:11:09,417 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 171 transitions. [2020-10-16 05:11:09,418 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:11:09,421 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 171 transitions. [2020-10-16 05:11:09,424 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 3 states. [2020-10-16 05:11:09,429 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 3 states. [2020-10-16 05:11:09,429 INFO L81 ComplementDD]: Finished complementDD. Result 3 states. [2020-10-16 05:11:09,432 INFO L185 Difference]: Start difference. First operand has 19 places, 13 transitions, 32 flow. Second operand 2 states and 171 transitions. [2020-10-16 05:11:09,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 12 transitions, 30 flow [2020-10-16 05:11:09,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 12 transitions, 28 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 05:11:09,437 INFO L241 Difference]: Finished difference. Result has 18 places, 12 transitions, 28 flow [2020-10-16 05:11:09,440 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=28, PETRI_PLACES=18, PETRI_TRANSITIONS=12} [2020-10-16 05:11:09,441 INFO L342 CegarLoopForPetriNet]: 19 programPoint places, -1 predicate places. [2020-10-16 05:11:09,441 INFO L481 AbstractCegarLoop]: Abstraction has has 18 places, 12 transitions, 28 flow [2020-10-16 05:11:09,441 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-16 05:11:09,441 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:11:09,441 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-16 05:11:09,442 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 05:11:09,442 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:11:09,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:11:09,442 INFO L82 PathProgramCache]: Analyzing trace with hash 1585313408, now seen corresponding path program 1 times [2020-10-16 05:11:09,443 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:11:09,443 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503157391] [2020-10-16 05:11:09,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:11:09,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:11:09,530 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 05:11:09,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503157391] [2020-10-16 05:11:09,531 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:11:09,531 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 05:11:09,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269890465] [2020-10-16 05:11:09,533 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 05:11:09,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:11:09,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 05:11:09,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 05:11:09,535 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 92 [2020-10-16 05:11:09,536 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 12 transitions, 28 flow. Second operand 3 states. [2020-10-16 05:11:09,536 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:11:09,536 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 92 [2020-10-16 05:11:09,536 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:11:09,557 INFO L129 PetriNetUnfolder]: 3/19 cut-off events. [2020-10-16 05:11:09,557 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:11:09,558 INFO L80 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 19 events. 3/19 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 31 event pairs, 1 based on Foata normal form. 1/20 useless extension candidates. Maximal degree in co-relation 33. Up to 10 conditions per place. [2020-10-16 05:11:09,558 INFO L132 encePairwiseOnDemand]: 88/92 looper letters, 3 selfloop transitions, 3 changer transitions 0/14 dead transitions. [2020-10-16 05:11:09,558 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 14 transitions, 44 flow [2020-10-16 05:11:09,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 05:11:09,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 05:11:09,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 223 transitions. [2020-10-16 05:11:09,562 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8079710144927537 [2020-10-16 05:11:09,562 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 223 transitions. [2020-10-16 05:11:09,562 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 223 transitions. [2020-10-16 05:11:09,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:11:09,563 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 223 transitions. [2020-10-16 05:11:09,564 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 05:11:09,567 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 05:11:09,567 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 05:11:09,567 INFO L185 Difference]: Start difference. First operand has 18 places, 12 transitions, 28 flow. Second operand 3 states and 223 transitions. [2020-10-16 05:11:09,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 14 transitions, 44 flow [2020-10-16 05:11:09,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 14 transitions, 44 flow, removed 0 selfloop flow, removed 0 redundant places. [2020-10-16 05:11:09,569 INFO L241 Difference]: Finished difference. Result has 21 places, 14 transitions, 47 flow [2020-10-16 05:11:09,569 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=47, PETRI_PLACES=21, PETRI_TRANSITIONS=14} [2020-10-16 05:11:09,570 INFO L342 CegarLoopForPetriNet]: 19 programPoint places, 2 predicate places. [2020-10-16 05:11:09,570 INFO L481 AbstractCegarLoop]: Abstraction has has 21 places, 14 transitions, 47 flow [2020-10-16 05:11:09,570 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 05:11:09,570 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:11:09,570 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:11:09,571 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 05:11:09,571 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:11:09,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:11:09,571 INFO L82 PathProgramCache]: Analyzing trace with hash 1888782877, now seen corresponding path program 1 times [2020-10-16 05:11:09,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:11:09,572 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540384839] [2020-10-16 05:11:09,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:11:09,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:11:09,674 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 05:11:09,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540384839] [2020-10-16 05:11:09,674 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:11:09,674 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 05:11:09,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290266015] [2020-10-16 05:11:09,675 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:11:09,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:11:09,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:11:09,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:11:09,678 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 92 [2020-10-16 05:11:09,680 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 14 transitions, 47 flow. Second operand 4 states. [2020-10-16 05:11:09,680 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:11:09,680 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 92 [2020-10-16 05:11:09,680 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:11:09,729 INFO L129 PetriNetUnfolder]: 9/36 cut-off events. [2020-10-16 05:11:09,729 INFO L130 PetriNetUnfolder]: For 7/10 co-relation queries the response was YES. [2020-10-16 05:11:09,730 INFO L80 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 36 events. 9/36 cut-off events. For 7/10 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 99 event pairs, 3 based on Foata normal form. 10/45 useless extension candidates. Maximal degree in co-relation 79. Up to 19 conditions per place. [2020-10-16 05:11:09,731 INFO L132 encePairwiseOnDemand]: 87/92 looper letters, 4 selfloop transitions, 5 changer transitions 3/21 dead transitions. [2020-10-16 05:11:09,731 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 21 transitions, 85 flow [2020-10-16 05:11:09,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 05:11:09,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-16 05:11:09,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 319 transitions. [2020-10-16 05:11:09,735 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6934782608695652 [2020-10-16 05:11:09,735 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 319 transitions. [2020-10-16 05:11:09,735 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 319 transitions. [2020-10-16 05:11:09,736 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:11:09,736 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 319 transitions. [2020-10-16 05:11:09,737 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 6 states. [2020-10-16 05:11:09,739 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 6 states. [2020-10-16 05:11:09,739 INFO L81 ComplementDD]: Finished complementDD. Result 6 states. [2020-10-16 05:11:09,739 INFO L185 Difference]: Start difference. First operand has 21 places, 14 transitions, 47 flow. Second operand 5 states and 319 transitions. [2020-10-16 05:11:09,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 21 transitions, 85 flow [2020-10-16 05:11:09,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 21 transitions, 82 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 05:11:09,741 INFO L241 Difference]: Finished difference. Result has 27 places, 18 transitions, 81 flow [2020-10-16 05:11:09,741 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=81, PETRI_PLACES=27, PETRI_TRANSITIONS=18} [2020-10-16 05:11:09,742 INFO L342 CegarLoopForPetriNet]: 19 programPoint places, 8 predicate places. [2020-10-16 05:11:09,742 INFO L481 AbstractCegarLoop]: Abstraction has has 27 places, 18 transitions, 81 flow [2020-10-16 05:11:09,742 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:11:09,742 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:11:09,742 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:11:09,742 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 05:11:09,743 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:11:09,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:11:09,743 INFO L82 PathProgramCache]: Analyzing trace with hash 1580909445, now seen corresponding path program 1 times [2020-10-16 05:11:09,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:11:09,744 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742326656] [2020-10-16 05:11:09,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:11:09,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:11:09,795 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 05:11:09,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742326656] [2020-10-16 05:11:09,796 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:11:09,796 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:11:09,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812997557] [2020-10-16 05:11:09,797 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 05:11:09,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:11:09,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 05:11:09,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 05:11:09,799 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 92 [2020-10-16 05:11:09,799 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 18 transitions, 81 flow. Second operand 5 states. [2020-10-16 05:11:09,800 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:11:09,800 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 92 [2020-10-16 05:11:09,800 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:11:09,865 INFO L129 PetriNetUnfolder]: 3/26 cut-off events. [2020-10-16 05:11:09,865 INFO L130 PetriNetUnfolder]: For 51/64 co-relation queries the response was YES. [2020-10-16 05:11:09,867 INFO L80 FinitePrefix]: Finished finitePrefix Result has 88 conditions, 26 events. 3/26 cut-off events. For 51/64 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 54 event pairs, 0 based on Foata normal form. 17/43 useless extension candidates. Maximal degree in co-relation 80. Up to 12 conditions per place. [2020-10-16 05:11:09,868 INFO L132 encePairwiseOnDemand]: 87/92 looper letters, 2 selfloop transitions, 8 changer transitions 2/21 dead transitions. [2020-10-16 05:11:09,868 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 21 transitions, 119 flow [2020-10-16 05:11:09,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 05:11:09,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-16 05:11:09,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 441 transitions. [2020-10-16 05:11:09,872 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6847826086956522 [2020-10-16 05:11:09,872 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 441 transitions. [2020-10-16 05:11:09,873 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 441 transitions. [2020-10-16 05:11:09,873 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:11:09,873 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 441 transitions. [2020-10-16 05:11:09,875 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-16 05:11:09,877 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-16 05:11:09,877 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-16 05:11:09,877 INFO L185 Difference]: Start difference. First operand has 27 places, 18 transitions, 81 flow. Second operand 7 states and 441 transitions. [2020-10-16 05:11:09,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 21 transitions, 119 flow [2020-10-16 05:11:09,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 21 transitions, 119 flow, removed 0 selfloop flow, removed 0 redundant places. [2020-10-16 05:11:09,880 INFO L241 Difference]: Finished difference. Result has 36 places, 19 transitions, 114 flow [2020-10-16 05:11:09,880 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=114, PETRI_PLACES=36, PETRI_TRANSITIONS=19} [2020-10-16 05:11:09,881 INFO L342 CegarLoopForPetriNet]: 19 programPoint places, 17 predicate places. [2020-10-16 05:11:09,881 INFO L481 AbstractCegarLoop]: Abstraction has has 36 places, 19 transitions, 114 flow [2020-10-16 05:11:09,881 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 05:11:09,881 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:11:09,881 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:11:09,881 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 05:11:09,882 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:11:09,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:11:09,882 INFO L82 PathProgramCache]: Analyzing trace with hash -1153598993, now seen corresponding path program 1 times [2020-10-16 05:11:09,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:11:09,882 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349268215] [2020-10-16 05:11:09,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:11:09,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:11:09,917 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 05:11:09,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349268215] [2020-10-16 05:11:09,918 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:11:09,918 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 05:11:09,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949053438] [2020-10-16 05:11:09,919 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 05:11:09,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:11:09,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 05:11:09,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 05:11:09,920 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 92 [2020-10-16 05:11:09,921 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 19 transitions, 114 flow. Second operand 3 states. [2020-10-16 05:11:09,921 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:11:09,921 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 92 [2020-10-16 05:11:09,921 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:11:09,939 INFO L129 PetriNetUnfolder]: 2/29 cut-off events. [2020-10-16 05:11:09,939 INFO L130 PetriNetUnfolder]: For 98/104 co-relation queries the response was YES. [2020-10-16 05:11:09,940 INFO L80 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 29 events. 2/29 cut-off events. For 98/104 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 67 event pairs, 0 based on Foata normal form. 4/33 useless extension candidates. Maximal degree in co-relation 102. Up to 14 conditions per place. [2020-10-16 05:11:09,940 INFO L132 encePairwiseOnDemand]: 89/92 looper letters, 2 selfloop transitions, 2 changer transitions 5/19 dead transitions. [2020-10-16 05:11:09,940 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 19 transitions, 126 flow [2020-10-16 05:11:09,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 05:11:09,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 05:11:09,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 222 transitions. [2020-10-16 05:11:09,942 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8043478260869565 [2020-10-16 05:11:09,942 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 222 transitions. [2020-10-16 05:11:09,942 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 222 transitions. [2020-10-16 05:11:09,943 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:11:09,943 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 222 transitions. [2020-10-16 05:11:09,944 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 05:11:09,944 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 05:11:09,945 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 05:11:09,945 INFO L185 Difference]: Start difference. First operand has 36 places, 19 transitions, 114 flow. Second operand 3 states and 222 transitions. [2020-10-16 05:11:09,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 19 transitions, 126 flow [2020-10-16 05:11:09,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 19 transitions, 101 flow, removed 6 selfloop flow, removed 6 redundant places. [2020-10-16 05:11:09,948 INFO L241 Difference]: Finished difference. Result has 32 places, 14 transitions, 70 flow [2020-10-16 05:11:09,948 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=89, PETRI_DIFFERENCE_MINUEND_PLACES=29, 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=70, PETRI_PLACES=32, PETRI_TRANSITIONS=14} [2020-10-16 05:11:09,949 INFO L342 CegarLoopForPetriNet]: 19 programPoint places, 13 predicate places. [2020-10-16 05:11:09,949 INFO L481 AbstractCegarLoop]: Abstraction has has 32 places, 14 transitions, 70 flow [2020-10-16 05:11:09,949 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 05:11:09,949 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:11:09,949 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:11:09,950 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 05:11:09,950 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:11:09,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:11:09,950 INFO L82 PathProgramCache]: Analyzing trace with hash -2045185969, now seen corresponding path program 2 times [2020-10-16 05:11:09,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:11:09,951 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364619144] [2020-10-16 05:11:09,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:11:09,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:11:09,988 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 05:11:09,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364619144] [2020-10-16 05:11:09,989 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:11:09,989 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:11:09,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644883809] [2020-10-16 05:11:09,990 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:11:09,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:11:09,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:11:09,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:11:09,994 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 92 [2020-10-16 05:11:09,995 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 14 transitions, 70 flow. Second operand 4 states. [2020-10-16 05:11:09,995 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:11:09,995 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 92 [2020-10-16 05:11:09,995 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:11:10,010 INFO L129 PetriNetUnfolder]: 1/13 cut-off events. [2020-10-16 05:11:10,010 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-10-16 05:11:10,010 INFO L80 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 13 events. 1/13 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 4 event pairs, 0 based on Foata normal form. 1/14 useless extension candidates. Maximal degree in co-relation 35. Up to 4 conditions per place. [2020-10-16 05:11:10,011 INFO L132 encePairwiseOnDemand]: 89/92 looper letters, 0 selfloop transitions, 0 changer transitions 13/13 dead transitions. [2020-10-16 05:11:10,011 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 13 transitions, 66 flow [2020-10-16 05:11:10,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 05:11:10,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 05:11:10,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 280 transitions. [2020-10-16 05:11:10,013 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7608695652173914 [2020-10-16 05:11:10,013 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 280 transitions. [2020-10-16 05:11:10,013 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 280 transitions. [2020-10-16 05:11:10,014 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:11:10,014 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 280 transitions. [2020-10-16 05:11:10,015 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 05:11:10,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 05:11:10,016 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 05:11:10,016 INFO L185 Difference]: Start difference. First operand has 32 places, 14 transitions, 70 flow. Second operand 4 states and 280 transitions. [2020-10-16 05:11:10,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 13 transitions, 66 flow [2020-10-16 05:11:10,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 13 transitions, 54 flow, removed 1 selfloop flow, removed 5 redundant places. [2020-10-16 05:11:10,017 INFO L241 Difference]: Finished difference. Result has 26 places, 0 transitions, 0 flow [2020-10-16 05:11:10,017 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=26, PETRI_TRANSITIONS=0} [2020-10-16 05:11:10,018 INFO L342 CegarLoopForPetriNet]: 19 programPoint places, 7 predicate places. [2020-10-16 05:11:10,018 INFO L481 AbstractCegarLoop]: Abstraction has has 26 places, 0 transitions, 0 flow [2020-10-16 05:11:10,018 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:11:10,018 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 05:11:10,022 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 05:11:10 BasicIcfg [2020-10-16 05:11:10,023 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 05:11:10,025 INFO L168 Benchmark]: Toolchain (without parser) took 3490.37 ms. Allocated memory was 251.7 MB in the beginning and 357.6 MB in the end (delta: 105.9 MB). Free memory was 206.8 MB in the beginning and 183.3 MB in the end (delta: 23.4 MB). Peak memory consumption was 129.3 MB. Max. memory is 14.2 GB. [2020-10-16 05:11:10,026 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 251.7 MB. Free memory was 229.7 MB in the beginning and 228.9 MB in the end (delta: 839.0 kB). Peak memory consumption was 839.0 kB. Max. memory is 14.2 GB. [2020-10-16 05:11:10,027 INFO L168 Benchmark]: CACSL2BoogieTranslator took 725.45 ms. Allocated memory was 251.7 MB in the beginning and 315.1 MB in the end (delta: 63.4 MB). Free memory was 206.8 MB in the beginning and 267.5 MB in the end (delta: -60.7 MB). Peak memory consumption was 27.2 MB. Max. memory is 14.2 GB. [2020-10-16 05:11:10,028 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.71 ms. Allocated memory is still 315.1 MB. Free memory was 267.5 MB in the beginning and 265.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 05:11:10,029 INFO L168 Benchmark]: Boogie Preprocessor took 26.48 ms. Allocated memory is still 315.1 MB. Free memory was 265.0 MB in the beginning and 264.1 MB in the end (delta: 838.8 kB). Peak memory consumption was 838.8 kB. Max. memory is 14.2 GB. [2020-10-16 05:11:10,030 INFO L168 Benchmark]: RCFGBuilder took 451.98 ms. Allocated memory is still 315.1 MB. Free memory was 264.1 MB in the beginning and 242.8 MB in the end (delta: 21.3 MB). Peak memory consumption was 21.3 MB. Max. memory is 14.2 GB. [2020-10-16 05:11:10,030 INFO L168 Benchmark]: TraceAbstraction took 2229.24 ms. Allocated memory was 315.1 MB in the beginning and 357.6 MB in the end (delta: 42.5 MB). Free memory was 242.8 MB in the beginning and 183.3 MB in the end (delta: 59.5 MB). Peak memory consumption was 101.9 MB. Max. memory is 14.2 GB. [2020-10-16 05:11:10,035 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 251.7 MB. Free memory was 229.7 MB in the beginning and 228.9 MB in the end (delta: 839.0 kB). Peak memory consumption was 839.0 kB. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 725.45 ms. Allocated memory was 251.7 MB in the beginning and 315.1 MB in the end (delta: 63.4 MB). Free memory was 206.8 MB in the beginning and 267.5 MB in the end (delta: -60.7 MB). Peak memory consumption was 27.2 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 49.71 ms. Allocated memory is still 315.1 MB. Free memory was 267.5 MB in the beginning and 265.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 26.48 ms. Allocated memory is still 315.1 MB. Free memory was 265.0 MB in the beginning and 264.1 MB in the end (delta: 838.8 kB). Peak memory consumption was 838.8 kB. Max. memory is 14.2 GB. * RCFGBuilder took 451.98 ms. Allocated memory is still 315.1 MB. Free memory was 264.1 MB in the beginning and 242.8 MB in the end (delta: 21.3 MB). Peak memory consumption was 21.3 MB. Max. memory is 14.2 GB. * TraceAbstraction took 2229.24 ms. Allocated memory was 315.1 MB in the beginning and 357.6 MB in the end (delta: 42.5 MB). Free memory was 242.8 MB in the beginning and 183.3 MB in the end (delta: 59.5 MB). Peak memory consumption was 101.9 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 319 VarBasedMoverChecksPositive, 28 VarBasedMoverChecksNegative, 1 SemBasedMoverChecksPositive, 27 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 37 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.1s, 50 PlacesBefore, 19 PlacesAfterwards, 44 TransitionsBefore, 13 TransitionsAfterwards, 456 CoEnabledTransitionPairs, 5 FixpointIterations, 12 TrivialSequentialCompositions, 20 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 0 ChoiceCompositions, 37 TotalNumberOfCompositions, 900 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 3 procedures, 54 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2.1s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.2s, HoareTripleCheckerStatistics: 16 SDtfs, 6 SDslu, 6 SDs, 0 SdLazy, 44 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=114occurred in iteration=4, 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, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 51 NumberOfCodeBlocks, 51 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 45 ConstructedInterpolants, 0 QuantifiedInterpolants, 897 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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...