/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/VMCAI2021_PN.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe032_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-11 18:46:11,140 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-11 18:46:11,142 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-11 18:46:11,164 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-11 18:46:11,165 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-11 18:46:11,166 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-11 18:46:11,167 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-11 18:46:11,168 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-11 18:46:11,170 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-11 18:46:11,171 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-11 18:46:11,172 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-11 18:46:11,173 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-11 18:46:11,173 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-11 18:46:11,174 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-11 18:46:11,175 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-11 18:46:11,176 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-11 18:46:11,176 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-11 18:46:11,177 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-11 18:46:11,179 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-11 18:46:11,180 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-11 18:46:11,182 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-11 18:46:11,183 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-11 18:46:11,184 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-11 18:46:11,184 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-11 18:46:11,187 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-11 18:46:11,187 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-11 18:46:11,187 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-11 18:46:11,188 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-11 18:46:11,188 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-11 18:46:11,189 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-11 18:46:11,189 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-11 18:46:11,190 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-11 18:46:11,191 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-11 18:46:11,191 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-11 18:46:11,192 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-11 18:46:11,192 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-11 18:46:11,193 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-11 18:46:11,193 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-11 18:46:11,193 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-11 18:46:11,194 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-11 18:46:11,195 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-11 18:46:11,196 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/VMCAI2021_PN.epf [2020-10-11 18:46:11,224 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-11 18:46:11,225 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-11 18:46:11,226 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-11 18:46:11,226 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-11 18:46:11,226 INFO L138 SettingsManager]: * Use SBE=true [2020-10-11 18:46:11,226 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-11 18:46:11,226 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-11 18:46:11,226 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-11 18:46:11,226 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-11 18:46:11,227 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-11 18:46:11,227 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-11 18:46:11,230 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-11 18:46:11,230 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-11 18:46:11,230 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-11 18:46:11,231 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-11 18:46:11,231 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-11 18:46:11,232 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-11 18:46:11,232 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-11 18:46:11,232 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-11 18:46:11,232 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-11 18:46:11,233 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-11 18:46:11,233 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-11 18:46:11,233 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-11 18:46:11,233 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-11 18:46:11,234 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-11 18:46:11,234 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-11 18:46:11,234 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-11 18:46:11,234 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-10-11 18:46:11,234 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-11 18:46:11,234 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-11 18:46:11,539 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-11 18:46:11,551 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-11 18:46:11,555 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-11 18:46:11,557 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-11 18:46:11,559 INFO L275 PluginConnector]: CDTParser initialized [2020-10-11 18:46:11,560 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe032_tso.opt.i [2020-10-11 18:46:11,630 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58449f0c6/1070acc3862e491d8a62a564258a8f39/FLAGdc6826db6 [2020-10-11 18:46:12,128 INFO L306 CDTParser]: Found 1 translation units. [2020-10-11 18:46:12,129 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe032_tso.opt.i [2020-10-11 18:46:12,145 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58449f0c6/1070acc3862e491d8a62a564258a8f39/FLAGdc6826db6 [2020-10-11 18:46:12,443 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58449f0c6/1070acc3862e491d8a62a564258a8f39 [2020-10-11 18:46:12,451 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-11 18:46:12,453 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-11 18:46:12,455 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-11 18:46:12,455 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-11 18:46:12,458 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-11 18:46:12,459 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 06:46:12" (1/1) ... [2020-10-11 18:46:12,462 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73ff41f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:46:12, skipping insertion in model container [2020-10-11 18:46:12,462 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 06:46:12" (1/1) ... [2020-10-11 18:46:12,469 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-11 18:46:12,513 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-11 18:46:12,919 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 18:46:12,932 INFO L203 MainTranslator]: Completed pre-run [2020-10-11 18:46:12,991 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 18:46:13,075 INFO L208 MainTranslator]: Completed translation [2020-10-11 18:46:13,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:46:13 WrapperNode [2020-10-11 18:46:13,076 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-11 18:46:13,077 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-11 18:46:13,077 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-11 18:46:13,077 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-11 18:46:13,085 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:46:13" (1/1) ... [2020-10-11 18:46:13,102 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:46:13" (1/1) ... [2020-10-11 18:46:13,124 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-11 18:46:13,124 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-11 18:46:13,124 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-11 18:46:13,124 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-11 18:46:13,131 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:46:13" (1/1) ... [2020-10-11 18:46:13,131 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:46:13" (1/1) ... [2020-10-11 18:46:13,134 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:46:13" (1/1) ... [2020-10-11 18:46:13,134 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:46:13" (1/1) ... [2020-10-11 18:46:13,140 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:46:13" (1/1) ... [2020-10-11 18:46:13,142 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:46:13" (1/1) ... [2020-10-11 18:46:13,144 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:46:13" (1/1) ... [2020-10-11 18:46:13,147 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-11 18:46:13,148 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-11 18:46:13,148 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-11 18:46:13,148 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-11 18:46:13,149 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:46:13" (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 [2020-10-11 18:46:13,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-11 18:46:13,215 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-11 18:46:13,215 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-11 18:46:13,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-11 18:46:13,215 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-11 18:46:13,215 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-11 18:46:13,215 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-11 18:46:13,216 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-11 18:46:13,216 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-11 18:46:13,216 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-11 18:46:13,216 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-11 18:46:13,216 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-11 18:46:13,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-11 18:46:13,218 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-11 18:46:13,565 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-11 18:46:13,565 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-11 18:46:13,567 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 06:46:13 BoogieIcfgContainer [2020-10-11 18:46:13,567 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-11 18:46:13,568 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-11 18:46:13,569 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-11 18:46:13,572 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-11 18:46:13,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 06:46:12" (1/3) ... [2020-10-11 18:46:13,573 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7adbee1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 06:46:13, skipping insertion in model container [2020-10-11 18:46:13,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:46:13" (2/3) ... [2020-10-11 18:46:13,573 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7adbee1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 06:46:13, skipping insertion in model container [2020-10-11 18:46:13,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 06:46:13" (3/3) ... [2020-10-11 18:46:13,575 INFO L111 eAbstractionObserver]: Analyzing ICFG safe032_tso.opt.i [2020-10-11 18:46:13,586 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-11 18:46:13,593 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-11 18:46:13,594 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-11 18:46:13,621 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:46:13,621 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:46:13,621 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:46:13,621 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:46:13,622 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:46:13,622 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:46:13,623 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:46:13,623 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:46:13,623 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:46:13,623 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:46:13,624 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:46:13,624 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:46:13,624 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:46:13,625 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:46:13,625 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:46:13,625 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:46:13,625 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:46:13,626 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:46:13,629 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:46:13,630 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:46:13,630 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:46:13,630 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:46:13,636 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:46:13,636 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:46:13,636 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:46:13,637 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:46:13,641 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:46:13,642 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:46:13,642 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:46:13,642 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:46:13,659 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-11 18:46:13,680 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-11 18:46:13,680 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-11 18:46:13,680 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-11 18:46:13,680 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-11 18:46:13,681 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-11 18:46:13,681 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-11 18:46:13,681 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-11 18:46:13,681 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-11 18:46:13,694 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-10-11 18:46:13,737 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-10-11 18:46:13,737 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 18:46:13,742 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 49 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. [2020-10-11 18:46:13,742 INFO L82 GeneralOperation]: Start removeDead. Operand has 77 places, 69 transitions, 153 flow [2020-10-11 18:46:13,748 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 64 places, 55 transitions, 119 flow [2020-10-11 18:46:13,768 INFO L129 PetriNetUnfolder]: 1/54 cut-off events. [2020-10-11 18:46:13,768 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 18:46:13,773 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:46:13,774 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:46:13,774 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:46:13,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:46:13,785 INFO L82 PathProgramCache]: Analyzing trace with hash 60883713, now seen corresponding path program 1 times [2020-10-11 18:46:13,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:46:13,795 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818747154] [2020-10-11 18:46:13,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:46:13,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:46:14,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:46:14,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818747154] [2020-10-11 18:46:14,179 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:46:14,179 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 18:46:14,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471780249] [2020-10-11 18:46:14,190 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 18:46:14,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:46:14,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 18:46:14,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 18:46:14,474 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 69 [2020-10-11 18:46:14,476 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 55 transitions, 119 flow. Second operand 6 states. [2020-10-11 18:46:14,476 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:46:14,477 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 69 [2020-10-11 18:46:14,478 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:46:14,649 INFO L129 PetriNetUnfolder]: 24/135 cut-off events. [2020-10-11 18:46:14,649 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 18:46:14,651 INFO L80 FinitePrefix]: Finished finitePrefix Result has 206 conditions, 135 events. 24/135 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 461 event pairs, 5 based on Foata normal form. 6/138 useless extension candidates. Maximal degree in co-relation 182. Up to 31 conditions per place. [2020-10-11 18:46:14,653 INFO L132 encePairwiseOnDemand]: 61/69 looper letters, 8 selfloop transitions, 3 changer transitions 19/75 dead transitions. [2020-10-11 18:46:14,653 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 75 transitions, 219 flow [2020-10-11 18:46:14,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 18:46:14,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-11 18:46:14,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 556 transitions. [2020-10-11 18:46:14,672 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.895330112721417 [2020-10-11 18:46:14,673 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 556 transitions. [2020-10-11 18:46:14,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 556 transitions. [2020-10-11 18:46:14,676 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:46:14,679 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 556 transitions. [2020-10-11 18:46:14,684 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-11 18:46:14,692 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-11 18:46:14,693 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-11 18:46:14,695 INFO L185 Difference]: Start difference. First operand has 64 places, 55 transitions, 119 flow. Second operand 9 states and 556 transitions. [2020-10-11 18:46:14,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 75 transitions, 219 flow [2020-10-11 18:46:14,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 75 transitions, 216 flow, removed 0 selfloop flow, removed 3 redundant places. [2020-10-11 18:46:14,708 INFO L241 Difference]: Finished difference. Result has 76 places, 56 transitions, 157 flow [2020-10-11 18:46:14,711 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=157, PETRI_PLACES=76, PETRI_TRANSITIONS=56} [2020-10-11 18:46:14,712 INFO L341 CegarLoopForPetriNet]: 64 programPoint places, 12 predicate places. [2020-10-11 18:46:14,712 INFO L481 AbstractCegarLoop]: Abstraction has has 76 places, 56 transitions, 157 flow [2020-10-11 18:46:14,713 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 18:46:14,713 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:46:14,713 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:46:14,713 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-11 18:46:14,714 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:46:14,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:46:14,714 INFO L82 PathProgramCache]: Analyzing trace with hash -1480569918, now seen corresponding path program 1 times [2020-10-11 18:46:14,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:46:14,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288456903] [2020-10-11 18:46:14,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:46:14,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:46:14,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:46:14,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288456903] [2020-10-11 18:46:14,898 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:46:14,898 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 18:46:14,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039067228] [2020-10-11 18:46:14,900 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 18:46:14,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:46:14,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 18:46:14,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 18:46:15,065 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 69 [2020-10-11 18:46:15,065 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 56 transitions, 157 flow. Second operand 6 states. [2020-10-11 18:46:15,066 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:46:15,066 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 69 [2020-10-11 18:46:15,066 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:46:15,223 INFO L129 PetriNetUnfolder]: 77/293 cut-off events. [2020-10-11 18:46:15,224 INFO L130 PetriNetUnfolder]: For 260/266 co-relation queries the response was YES. [2020-10-11 18:46:15,227 INFO L80 FinitePrefix]: Finished finitePrefix Result has 646 conditions, 293 events. 77/293 cut-off events. For 260/266 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1546 event pairs, 18 based on Foata normal form. 10/295 useless extension candidates. Maximal degree in co-relation 616. Up to 64 conditions per place. [2020-10-11 18:46:15,229 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 8 selfloop transitions, 3 changer transitions 19/77 dead transitions. [2020-10-11 18:46:15,229 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 77 transitions, 277 flow [2020-10-11 18:46:15,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 18:46:15,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-11 18:46:15,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 554 transitions. [2020-10-11 18:46:15,232 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8921095008051529 [2020-10-11 18:46:15,232 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 554 transitions. [2020-10-11 18:46:15,233 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 554 transitions. [2020-10-11 18:46:15,233 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:46:15,233 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 554 transitions. [2020-10-11 18:46:15,235 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-11 18:46:15,237 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-11 18:46:15,237 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-11 18:46:15,237 INFO L185 Difference]: Start difference. First operand has 76 places, 56 transitions, 157 flow. Second operand 9 states and 554 transitions. [2020-10-11 18:46:15,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 77 transitions, 277 flow [2020-10-11 18:46:15,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 77 transitions, 260 flow, removed 7 selfloop flow, removed 4 redundant places. [2020-10-11 18:46:15,243 INFO L241 Difference]: Finished difference. Result has 81 places, 58 transitions, 191 flow [2020-10-11 18:46:15,243 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=191, PETRI_PLACES=81, PETRI_TRANSITIONS=58} [2020-10-11 18:46:15,244 INFO L341 CegarLoopForPetriNet]: 64 programPoint places, 17 predicate places. [2020-10-11 18:46:15,244 INFO L481 AbstractCegarLoop]: Abstraction has has 81 places, 58 transitions, 191 flow [2020-10-11 18:46:15,244 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 18:46:15,244 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:46:15,244 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:46:15,245 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-11 18:46:15,245 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:46:15,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:46:15,245 INFO L82 PathProgramCache]: Analyzing trace with hash -1018280100, now seen corresponding path program 1 times [2020-10-11 18:46:15,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:46:15,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980845469] [2020-10-11 18:46:15,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:46:15,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:46:15,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:46:15,364 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980845469] [2020-10-11 18:46:15,365 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:46:15,365 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 18:46:15,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559305624] [2020-10-11 18:46:15,365 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 18:46:15,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:46:15,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 18:46:15,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 18:46:15,514 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 69 [2020-10-11 18:46:15,514 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 58 transitions, 191 flow. Second operand 6 states. [2020-10-11 18:46:15,515 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:46:15,515 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 69 [2020-10-11 18:46:15,515 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:46:15,660 INFO L129 PetriNetUnfolder]: 53/219 cut-off events. [2020-10-11 18:46:15,661 INFO L130 PetriNetUnfolder]: For 476/487 co-relation queries the response was YES. [2020-10-11 18:46:15,663 INFO L80 FinitePrefix]: Finished finitePrefix Result has 626 conditions, 219 events. 53/219 cut-off events. For 476/487 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 982 event pairs, 19 based on Foata normal form. 11/222 useless extension candidates. Maximal degree in co-relation 591. Up to 42 conditions per place. [2020-10-11 18:46:15,664 INFO L132 encePairwiseOnDemand]: 63/69 looper letters, 6 selfloop transitions, 2 changer transitions 10/68 dead transitions. [2020-10-11 18:46:15,664 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 68 transitions, 275 flow [2020-10-11 18:46:15,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 18:46:15,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-11 18:46:15,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 551 transitions. [2020-10-11 18:46:15,667 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8872785829307569 [2020-10-11 18:46:15,668 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 551 transitions. [2020-10-11 18:46:15,668 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 551 transitions. [2020-10-11 18:46:15,668 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:46:15,669 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 551 transitions. [2020-10-11 18:46:15,670 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-11 18:46:15,672 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-11 18:46:15,672 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-11 18:46:15,672 INFO L185 Difference]: Start difference. First operand has 81 places, 58 transitions, 191 flow. Second operand 9 states and 551 transitions. [2020-10-11 18:46:15,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 68 transitions, 275 flow [2020-10-11 18:46:15,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 68 transitions, 256 flow, removed 8 selfloop flow, removed 4 redundant places. [2020-10-11 18:46:15,679 INFO L241 Difference]: Finished difference. Result has 86 places, 58 transitions, 200 flow [2020-10-11 18:46:15,679 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=200, PETRI_PLACES=86, PETRI_TRANSITIONS=58} [2020-10-11 18:46:15,679 INFO L341 CegarLoopForPetriNet]: 64 programPoint places, 22 predicate places. [2020-10-11 18:46:15,679 INFO L481 AbstractCegarLoop]: Abstraction has has 86 places, 58 transitions, 200 flow [2020-10-11 18:46:15,679 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 18:46:15,679 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:46:15,680 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:46:15,680 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-11 18:46:15,680 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:46:15,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:46:15,680 INFO L82 PathProgramCache]: Analyzing trace with hash -1736138671, now seen corresponding path program 1 times [2020-10-11 18:46:15,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:46:15,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406547603] [2020-10-11 18:46:15,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:46:15,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:46:15,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:46:15,819 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406547603] [2020-10-11 18:46:15,819 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:46:15,819 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 18:46:15,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830557104] [2020-10-11 18:46:15,820 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 18:46:15,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:46:15,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 18:46:15,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 18:46:16,017 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 69 [2020-10-11 18:46:16,018 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 58 transitions, 200 flow. Second operand 6 states. [2020-10-11 18:46:16,018 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:46:16,018 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 69 [2020-10-11 18:46:16,018 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:46:16,133 INFO L129 PetriNetUnfolder]: 21/138 cut-off events. [2020-10-11 18:46:16,133 INFO L130 PetriNetUnfolder]: For 396/440 co-relation queries the response was YES. [2020-10-11 18:46:16,134 INFO L80 FinitePrefix]: Finished finitePrefix Result has 433 conditions, 138 events. 21/138 cut-off events. For 396/440 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 487 event pairs, 9 based on Foata normal form. 8/141 useless extension candidates. Maximal degree in co-relation 393. Up to 32 conditions per place. [2020-10-11 18:46:16,135 INFO L132 encePairwiseOnDemand]: 63/69 looper letters, 7 selfloop transitions, 2 changer transitions 12/68 dead transitions. [2020-10-11 18:46:16,135 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 68 transitions, 324 flow [2020-10-11 18:46:16,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 18:46:16,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-11 18:46:16,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 544 transitions. [2020-10-11 18:46:16,138 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8760064412238325 [2020-10-11 18:46:16,138 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 544 transitions. [2020-10-11 18:46:16,139 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 544 transitions. [2020-10-11 18:46:16,139 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:46:16,139 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 544 transitions. [2020-10-11 18:46:16,141 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-11 18:46:16,142 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-11 18:46:16,142 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-11 18:46:16,143 INFO L185 Difference]: Start difference. First operand has 86 places, 58 transitions, 200 flow. Second operand 9 states and 544 transitions. [2020-10-11 18:46:16,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 68 transitions, 324 flow [2020-10-11 18:46:16,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 68 transitions, 280 flow, removed 20 selfloop flow, removed 8 redundant places. [2020-10-11 18:46:16,148 INFO L241 Difference]: Finished difference. Result has 87 places, 56 transitions, 190 flow [2020-10-11 18:46:16,148 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=190, PETRI_PLACES=87, PETRI_TRANSITIONS=56} [2020-10-11 18:46:16,148 INFO L341 CegarLoopForPetriNet]: 64 programPoint places, 23 predicate places. [2020-10-11 18:46:16,148 INFO L481 AbstractCegarLoop]: Abstraction has has 87 places, 56 transitions, 190 flow [2020-10-11 18:46:16,148 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 18:46:16,149 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:46:16,149 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:46:16,149 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-11 18:46:16,149 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:46:16,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:46:16,150 INFO L82 PathProgramCache]: Analyzing trace with hash 1148255955, now seen corresponding path program 1 times [2020-10-11 18:46:16,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:46:16,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349743148] [2020-10-11 18:46:16,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:46:16,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:46:16,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:46:16,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349743148] [2020-10-11 18:46:16,241 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:46:16,241 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 18:46:16,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826323381] [2020-10-11 18:46:16,242 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 18:46:16,242 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:46:16,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 18:46:16,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-11 18:46:16,507 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 69 [2020-10-11 18:46:16,507 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 56 transitions, 190 flow. Second operand 7 states. [2020-10-11 18:46:16,507 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:46:16,508 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 69 [2020-10-11 18:46:16,508 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:46:16,596 INFO L129 PetriNetUnfolder]: 16/117 cut-off events. [2020-10-11 18:46:16,596 INFO L130 PetriNetUnfolder]: For 318/357 co-relation queries the response was YES. [2020-10-11 18:46:16,597 INFO L80 FinitePrefix]: Finished finitePrefix Result has 352 conditions, 117 events. 16/117 cut-off events. For 318/357 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 350 event pairs, 7 based on Foata normal form. 5/118 useless extension candidates. Maximal degree in co-relation 311. Up to 28 conditions per place. [2020-10-11 18:46:16,598 INFO L132 encePairwiseOnDemand]: 63/69 looper letters, 10 selfloop transitions, 1 changer transitions 5/61 dead transitions. [2020-10-11 18:46:16,598 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 61 transitions, 257 flow [2020-10-11 18:46:16,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-11 18:46:16,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-11 18:46:16,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 409 transitions. [2020-10-11 18:46:16,600 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8467908902691511 [2020-10-11 18:46:16,600 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 409 transitions. [2020-10-11 18:46:16,600 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 409 transitions. [2020-10-11 18:46:16,601 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:46:16,601 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 409 transitions. [2020-10-11 18:46:16,602 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-11 18:46:16,603 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-11 18:46:16,603 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-11 18:46:16,603 INFO L185 Difference]: Start difference. First operand has 87 places, 56 transitions, 190 flow. Second operand 7 states and 409 transitions. [2020-10-11 18:46:16,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 61 transitions, 257 flow [2020-10-11 18:46:16,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 61 transitions, 217 flow, removed 18 selfloop flow, removed 11 redundant places. [2020-10-11 18:46:16,607 INFO L241 Difference]: Finished difference. Result has 81 places, 56 transitions, 175 flow [2020-10-11 18:46:16,607 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=175, PETRI_PLACES=81, PETRI_TRANSITIONS=56} [2020-10-11 18:46:16,607 INFO L341 CegarLoopForPetriNet]: 64 programPoint places, 17 predicate places. [2020-10-11 18:46:16,608 INFO L481 AbstractCegarLoop]: Abstraction has has 81 places, 56 transitions, 175 flow [2020-10-11 18:46:16,608 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 18:46:16,608 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:46:16,608 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:46:16,608 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-11 18:46:16,608 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:46:16,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:46:16,609 INFO L82 PathProgramCache]: Analyzing trace with hash -558922379, now seen corresponding path program 2 times [2020-10-11 18:46:16,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:46:16,609 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016966067] [2020-10-11 18:46:16,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:46:16,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:46:16,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:46:16,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016966067] [2020-10-11 18:46:16,684 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:46:16,684 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 18:46:16,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498449372] [2020-10-11 18:46:16,685 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 18:46:16,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:46:16,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 18:46:16,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 18:46:16,849 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 69 [2020-10-11 18:46:16,850 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 56 transitions, 175 flow. Second operand 6 states. [2020-10-11 18:46:16,850 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:46:16,850 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 69 [2020-10-11 18:46:16,850 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:46:16,943 INFO L129 PetriNetUnfolder]: 7/134 cut-off events. [2020-10-11 18:46:16,944 INFO L130 PetriNetUnfolder]: For 197/227 co-relation queries the response was YES. [2020-10-11 18:46:16,944 INFO L80 FinitePrefix]: Finished finitePrefix Result has 312 conditions, 134 events. 7/134 cut-off events. For 197/227 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 489 event pairs, 0 based on Foata normal form. 3/135 useless extension candidates. Maximal degree in co-relation 277. Up to 21 conditions per place. [2020-10-11 18:46:16,945 INFO L132 encePairwiseOnDemand]: 63/69 looper letters, 12 selfloop transitions, 3 changer transitions 11/70 dead transitions. [2020-10-11 18:46:16,945 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 70 transitions, 315 flow [2020-10-11 18:46:16,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 18:46:16,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-11 18:46:16,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 548 transitions. [2020-10-11 18:46:16,948 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8824476650563607 [2020-10-11 18:46:16,948 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 548 transitions. [2020-10-11 18:46:16,948 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 548 transitions. [2020-10-11 18:46:16,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:46:16,949 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 548 transitions. [2020-10-11 18:46:16,951 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-11 18:46:16,952 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-11 18:46:16,952 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-11 18:46:16,953 INFO L185 Difference]: Start difference. First operand has 81 places, 56 transitions, 175 flow. Second operand 9 states and 548 transitions. [2020-10-11 18:46:16,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 70 transitions, 315 flow [2020-10-11 18:46:16,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 70 transitions, 276 flow, removed 18 selfloop flow, removed 6 redundant places. [2020-10-11 18:46:16,957 INFO L241 Difference]: Finished difference. Result has 86 places, 55 transitions, 181 flow [2020-10-11 18:46:16,957 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=181, PETRI_PLACES=86, PETRI_TRANSITIONS=55} [2020-10-11 18:46:16,958 INFO L341 CegarLoopForPetriNet]: 64 programPoint places, 22 predicate places. [2020-10-11 18:46:16,958 INFO L481 AbstractCegarLoop]: Abstraction has has 86 places, 55 transitions, 181 flow [2020-10-11 18:46:16,958 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 18:46:16,958 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:46:16,959 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:46:16,959 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-11 18:46:16,959 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:46:16,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:46:16,959 INFO L82 PathProgramCache]: Analyzing trace with hash -1890394592, now seen corresponding path program 1 times [2020-10-11 18:46:16,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:46:16,960 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56191594] [2020-10-11 18:46:16,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:46:17,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:46:17,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:46:17,086 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56191594] [2020-10-11 18:46:17,086 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:46:17,087 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 18:46:17,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436527948] [2020-10-11 18:46:17,087 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 18:46:17,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:46:17,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 18:46:17,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 18:46:17,176 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 69 [2020-10-11 18:46:17,176 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 55 transitions, 181 flow. Second operand 6 states. [2020-10-11 18:46:17,176 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:46:17,176 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 69 [2020-10-11 18:46:17,177 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:46:17,362 INFO L129 PetriNetUnfolder]: 235/643 cut-off events. [2020-10-11 18:46:17,364 INFO L130 PetriNetUnfolder]: For 410/427 co-relation queries the response was YES. [2020-10-11 18:46:17,368 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1331 conditions, 643 events. 235/643 cut-off events. For 410/427 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 4393 event pairs, 13 based on Foata normal form. 19/617 useless extension candidates. Maximal degree in co-relation 1294. Up to 206 conditions per place. [2020-10-11 18:46:17,373 INFO L132 encePairwiseOnDemand]: 60/69 looper letters, 10 selfloop transitions, 6 changer transitions 19/80 dead transitions. [2020-10-11 18:46:17,375 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 80 transitions, 301 flow [2020-10-11 18:46:17,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 18:46:17,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-11 18:46:17,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 541 transitions. [2020-10-11 18:46:17,383 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8711755233494364 [2020-10-11 18:46:17,383 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 541 transitions. [2020-10-11 18:46:17,383 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 541 transitions. [2020-10-11 18:46:17,384 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:46:17,384 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 541 transitions. [2020-10-11 18:46:17,385 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-11 18:46:17,386 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-11 18:46:17,387 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-11 18:46:17,387 INFO L185 Difference]: Start difference. First operand has 86 places, 55 transitions, 181 flow. Second operand 9 states and 541 transitions. [2020-10-11 18:46:17,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 80 transitions, 301 flow [2020-10-11 18:46:17,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 80 transitions, 280 flow, removed 9 selfloop flow, removed 7 redundant places. [2020-10-11 18:46:17,392 INFO L241 Difference]: Finished difference. Result has 86 places, 58 transitions, 216 flow [2020-10-11 18:46:17,393 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=216, PETRI_PLACES=86, PETRI_TRANSITIONS=58} [2020-10-11 18:46:17,393 INFO L341 CegarLoopForPetriNet]: 64 programPoint places, 22 predicate places. [2020-10-11 18:46:17,393 INFO L481 AbstractCegarLoop]: Abstraction has has 86 places, 58 transitions, 216 flow [2020-10-11 18:46:17,394 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 18:46:17,394 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:46:17,394 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:46:17,394 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-11 18:46:17,395 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:46:17,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:46:17,395 INFO L82 PathProgramCache]: Analyzing trace with hash -1289000795, now seen corresponding path program 1 times [2020-10-11 18:46:17,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:46:17,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548065881] [2020-10-11 18:46:17,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:46:17,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:46:17,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:46:17,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548065881] [2020-10-11 18:46:17,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:46:17,568 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 18:46:17,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146900266] [2020-10-11 18:46:17,569 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 18:46:17,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:46:17,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 18:46:17,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-11 18:46:17,738 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 69 [2020-10-11 18:46:17,738 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 58 transitions, 216 flow. Second operand 7 states. [2020-10-11 18:46:17,739 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:46:17,739 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 69 [2020-10-11 18:46:17,739 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:46:17,926 INFO L129 PetriNetUnfolder]: 123/415 cut-off events. [2020-10-11 18:46:17,926 INFO L130 PetriNetUnfolder]: For 779/961 co-relation queries the response was YES. [2020-10-11 18:46:17,928 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1393 conditions, 415 events. 123/415 cut-off events. For 779/961 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2519 event pairs, 3 based on Foata normal form. 36/435 useless extension candidates. Maximal degree in co-relation 1354. Up to 178 conditions per place. [2020-10-11 18:46:17,930 INFO L132 encePairwiseOnDemand]: 60/69 looper letters, 10 selfloop transitions, 9 changer transitions 19/83 dead transitions. [2020-10-11 18:46:17,930 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 83 transitions, 469 flow [2020-10-11 18:46:17,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-11 18:46:17,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-11 18:46:17,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 600 transitions. [2020-10-11 18:46:17,932 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8695652173913043 [2020-10-11 18:46:17,933 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 600 transitions. [2020-10-11 18:46:17,933 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 600 transitions. [2020-10-11 18:46:17,933 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:46:17,934 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 600 transitions. [2020-10-11 18:46:17,935 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-10-11 18:46:17,937 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-10-11 18:46:17,937 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-10-11 18:46:17,937 INFO L185 Difference]: Start difference. First operand has 86 places, 58 transitions, 216 flow. Second operand 10 states and 600 transitions. [2020-10-11 18:46:17,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 83 transitions, 469 flow [2020-10-11 18:46:17,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 83 transitions, 445 flow, removed 7 selfloop flow, removed 5 redundant places. [2020-10-11 18:46:17,944 INFO L241 Difference]: Finished difference. Result has 92 places, 61 transitions, 284 flow [2020-10-11 18:46:17,945 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=284, PETRI_PLACES=92, PETRI_TRANSITIONS=61} [2020-10-11 18:46:17,945 INFO L341 CegarLoopForPetriNet]: 64 programPoint places, 28 predicate places. [2020-10-11 18:46:17,945 INFO L481 AbstractCegarLoop]: Abstraction has has 92 places, 61 transitions, 284 flow [2020-10-11 18:46:17,945 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 18:46:17,945 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:46:17,946 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:46:17,946 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-11 18:46:17,946 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:46:17,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:46:17,946 INFO L82 PathProgramCache]: Analyzing trace with hash 1635018630, now seen corresponding path program 1 times [2020-10-11 18:46:17,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:46:17,948 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331640904] [2020-10-11 18:46:17,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:46:17,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:46:18,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:46:18,112 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331640904] [2020-10-11 18:46:18,112 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:46:18,112 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-11 18:46:18,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73196142] [2020-10-11 18:46:18,113 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-11 18:46:18,113 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:46:18,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-11 18:46:18,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-11 18:46:18,249 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 69 [2020-10-11 18:46:18,249 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 61 transitions, 284 flow. Second operand 8 states. [2020-10-11 18:46:18,249 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:46:18,249 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 69 [2020-10-11 18:46:18,250 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:46:18,425 INFO L129 PetriNetUnfolder]: 34/189 cut-off events. [2020-10-11 18:46:18,426 INFO L130 PetriNetUnfolder]: For 786/882 co-relation queries the response was YES. [2020-10-11 18:46:18,427 INFO L80 FinitePrefix]: Finished finitePrefix Result has 736 conditions, 189 events. 34/189 cut-off events. For 786/882 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 830 event pairs, 0 based on Foata normal form. 38/224 useless extension candidates. Maximal degree in co-relation 693. Up to 67 conditions per place. [2020-10-11 18:46:18,427 INFO L132 encePairwiseOnDemand]: 60/69 looper letters, 4 selfloop transitions, 12 changer transitions 15/74 dead transitions. [2020-10-11 18:46:18,427 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 74 transitions, 468 flow [2020-10-11 18:46:18,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-11 18:46:18,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-10-11 18:46:18,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 647 transitions. [2020-10-11 18:46:18,430 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.852437417654809 [2020-10-11 18:46:18,430 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 647 transitions. [2020-10-11 18:46:18,431 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 647 transitions. [2020-10-11 18:46:18,431 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:46:18,431 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 647 transitions. [2020-10-11 18:46:18,433 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 12 states. [2020-10-11 18:46:18,434 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 12 states. [2020-10-11 18:46:18,434 INFO L81 ComplementDD]: Finished complementDD. Result 12 states. [2020-10-11 18:46:18,435 INFO L185 Difference]: Start difference. First operand has 92 places, 61 transitions, 284 flow. Second operand 11 states and 647 transitions. [2020-10-11 18:46:18,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 74 transitions, 468 flow [2020-10-11 18:46:18,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 74 transitions, 351 flow, removed 47 selfloop flow, removed 14 redundant places. [2020-10-11 18:46:18,439 INFO L241 Difference]: Finished difference. Result has 90 places, 59 transitions, 242 flow [2020-10-11 18:46:18,439 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=242, PETRI_PLACES=90, PETRI_TRANSITIONS=59} [2020-10-11 18:46:18,439 INFO L341 CegarLoopForPetriNet]: 64 programPoint places, 26 predicate places. [2020-10-11 18:46:18,439 INFO L481 AbstractCegarLoop]: Abstraction has has 90 places, 59 transitions, 242 flow [2020-10-11 18:46:18,440 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-11 18:46:18,440 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:46:18,440 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:46:18,440 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-11 18:46:18,440 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:46:18,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:46:18,441 INFO L82 PathProgramCache]: Analyzing trace with hash -248873003, now seen corresponding path program 1 times [2020-10-11 18:46:18,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:46:18,441 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301332125] [2020-10-11 18:46:18,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:46:18,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:46:18,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:46:18,517 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301332125] [2020-10-11 18:46:18,518 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:46:18,518 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 18:46:18,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879844984] [2020-10-11 18:46:18,518 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 18:46:18,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:46:18,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 18:46:18,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-11 18:46:18,716 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 69 [2020-10-11 18:46:18,717 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 59 transitions, 242 flow. Second operand 7 states. [2020-10-11 18:46:18,717 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:46:18,717 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 69 [2020-10-11 18:46:18,717 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:46:18,784 INFO L129 PetriNetUnfolder]: 6/82 cut-off events. [2020-10-11 18:46:18,784 INFO L130 PetriNetUnfolder]: For 85/92 co-relation queries the response was YES. [2020-10-11 18:46:18,784 INFO L80 FinitePrefix]: Finished finitePrefix Result has 200 conditions, 82 events. 6/82 cut-off events. For 85/92 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 155 event pairs, 0 based on Foata normal form. 1/81 useless extension candidates. Maximal degree in co-relation 171. Up to 13 conditions per place. [2020-10-11 18:46:18,785 INFO L132 encePairwiseOnDemand]: 63/69 looper letters, 0 selfloop transitions, 0 changer transitions 57/57 dead transitions. [2020-10-11 18:46:18,785 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 57 transitions, 258 flow [2020-10-11 18:46:18,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-11 18:46:18,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-11 18:46:18,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 403 transitions. [2020-10-11 18:46:18,787 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8343685300207039 [2020-10-11 18:46:18,787 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 403 transitions. [2020-10-11 18:46:18,787 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 403 transitions. [2020-10-11 18:46:18,787 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:46:18,787 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 403 transitions. [2020-10-11 18:46:18,788 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-11 18:46:18,789 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-11 18:46:18,790 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-11 18:46:18,790 INFO L185 Difference]: Start difference. First operand has 90 places, 59 transitions, 242 flow. Second operand 7 states and 403 transitions. [2020-10-11 18:46:18,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 57 transitions, 258 flow [2020-10-11 18:46:18,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 57 transitions, 168 flow, removed 23 selfloop flow, removed 18 redundant places. [2020-10-11 18:46:18,792 INFO L241 Difference]: Finished difference. Result has 72 places, 0 transitions, 0 flow [2020-10-11 18:46:18,792 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=72, PETRI_TRANSITIONS=0} [2020-10-11 18:46:18,792 INFO L341 CegarLoopForPetriNet]: 64 programPoint places, 8 predicate places. [2020-10-11 18:46:18,792 INFO L481 AbstractCegarLoop]: Abstraction has has 72 places, 0 transitions, 0 flow [2020-10-11 18:46:18,792 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 18:46:18,793 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-11 18:46:18,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 06:46:18 BasicIcfg [2020-10-11 18:46:18,799 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-11 18:46:18,801 INFO L168 Benchmark]: Toolchain (without parser) took 6347.39 ms. Allocated memory was 250.6 MB in the beginning and 424.7 MB in the end (delta: 174.1 MB). Free memory was 205.8 MB in the beginning and 276.5 MB in the end (delta: -70.7 MB). Peak memory consumption was 103.4 MB. Max. memory is 14.2 GB. [2020-10-11 18:46:18,802 INFO L168 Benchmark]: CDTParser took 0.46 ms. Allocated memory is still 250.6 MB. Free memory is still 227.0 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-11 18:46:18,803 INFO L168 Benchmark]: CACSL2BoogieTranslator took 621.56 ms. Allocated memory was 250.6 MB in the beginning and 309.9 MB in the end (delta: 59.2 MB). Free memory was 205.8 MB in the beginning and 263.3 MB in the end (delta: -57.5 MB). Peak memory consumption was 33.1 MB. Max. memory is 14.2 GB. [2020-10-11 18:46:18,803 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.46 ms. Allocated memory is still 309.9 MB. Free memory was 263.3 MB in the beginning and 262.7 MB in the end (delta: 629.2 kB). Peak memory consumption was 629.2 kB. Max. memory is 14.2 GB. [2020-10-11 18:46:18,804 INFO L168 Benchmark]: Boogie Preprocessor took 23.15 ms. Allocated memory is still 309.9 MB. Free memory was 262.7 MB in the beginning and 260.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-11 18:46:18,805 INFO L168 Benchmark]: RCFGBuilder took 419.65 ms. Allocated memory is still 309.9 MB. Free memory was 260.1 MB in the beginning and 238.0 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 14.2 GB. [2020-10-11 18:46:18,806 INFO L168 Benchmark]: TraceAbstraction took 5230.36 ms. Allocated memory was 309.9 MB in the beginning and 424.7 MB in the end (delta: 114.8 MB). Free memory was 238.0 MB in the beginning and 276.5 MB in the end (delta: -38.5 MB). Peak memory consumption was 76.4 MB. Max. memory is 14.2 GB. [2020-10-11 18:46:18,810 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.46 ms. Allocated memory is still 250.6 MB. Free memory is still 227.0 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 621.56 ms. Allocated memory was 250.6 MB in the beginning and 309.9 MB in the end (delta: 59.2 MB). Free memory was 205.8 MB in the beginning and 263.3 MB in the end (delta: -57.5 MB). Peak memory consumption was 33.1 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 47.46 ms. Allocated memory is still 309.9 MB. Free memory was 263.3 MB in the beginning and 262.7 MB in the end (delta: 629.2 kB). Peak memory consumption was 629.2 kB. Max. memory is 14.2 GB. * Boogie Preprocessor took 23.15 ms. Allocated memory is still 309.9 MB. Free memory was 262.7 MB in the beginning and 260.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 419.65 ms. Allocated memory is still 309.9 MB. Free memory was 260.1 MB in the beginning and 238.0 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 14.2 GB. * TraceAbstraction took 5230.36 ms. Allocated memory was 309.9 MB in the beginning and 424.7 MB in the end (delta: 114.8 MB). Free memory was 238.0 MB in the beginning and 276.5 MB in the end (delta: -38.5 MB). Peak memory consumption was 76.4 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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: 5.1s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 3.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 221 SDtfs, 286 SDslu, 662 SDs, 0 SdLazy, 684 SolverSat, 96 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 116 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=284occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 409 NumberOfCodeBlocks, 409 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 399 ConstructedInterpolants, 0 QuantifiedInterpolants, 43605 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...