/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe025_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-16 01:43:30,153 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 01:43:30,155 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 01:43:30,191 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 01:43:30,192 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 01:43:30,199 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 01:43:30,202 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 01:43:30,205 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 01:43:30,208 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 01:43:30,210 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 01:43:30,211 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 01:43:30,212 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 01:43:30,212 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 01:43:30,215 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 01:43:30,217 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 01:43:30,218 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 01:43:30,219 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 01:43:30,220 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 01:43:30,221 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 01:43:30,229 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 01:43:30,230 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 01:43:30,231 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 01:43:30,232 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 01:43:30,233 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 01:43:30,244 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-16 01:43:30,252 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 01:43:30,253 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 01:43:30,253 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 01:43:30,259 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 01:43:30,260 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 01:43:30,260 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 01:43:30,261 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 01:43:30,261 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 01:43:30,261 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 01:43:30,262 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 01:43:30,262 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 01:43:30,263 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2020-10-16 01:43:30,297 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 01:43:30,297 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 01:43:30,299 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 01:43:30,299 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 01:43:30,299 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 01:43:30,299 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 01:43:30,300 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 01:43:30,300 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 01:43:30,300 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 01:43:30,300 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 01:43:30,301 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 01:43:30,301 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 01:43:30,302 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 01:43:30,302 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 01:43:30,302 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 01:43:30,302 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 01:43:30,302 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 01:43:30,303 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 01:43:30,303 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 01:43:30,303 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 01:43:30,303 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 01:43:30,303 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 01:43:30,304 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 01:43:30,304 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 01:43:30,304 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 01:43:30,304 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 01:43:30,304 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 01:43:30,304 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-16 01:43:30,305 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 01:43:30,585 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 01:43:30,599 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 01:43:30,603 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 01:43:30,604 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 01:43:30,604 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 01:43:30,605 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe025_pso.opt.i [2020-10-16 01:43:30,675 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a47e5672/f2b121053d6e432ab963feffd149f28b/FLAGcd93934bd [2020-10-16 01:43:31,235 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 01:43:31,236 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe025_pso.opt.i [2020-10-16 01:43:31,257 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a47e5672/f2b121053d6e432ab963feffd149f28b/FLAGcd93934bd [2020-10-16 01:43:31,562 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a47e5672/f2b121053d6e432ab963feffd149f28b [2020-10-16 01:43:31,571 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 01:43:31,573 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 01:43:31,574 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 01:43:31,574 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 01:43:31,579 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 01:43:31,580 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:43:31" (1/1) ... [2020-10-16 01:43:31,584 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48efa502 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:43:31, skipping insertion in model container [2020-10-16 01:43:31,584 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:43:31" (1/1) ... [2020-10-16 01:43:31,592 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 01:43:31,650 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 01:43:32,080 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 01:43:32,091 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 01:43:32,137 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 01:43:32,207 INFO L208 MainTranslator]: Completed translation [2020-10-16 01:43:32,207 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:43:32 WrapperNode [2020-10-16 01:43:32,207 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 01:43:32,208 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 01:43:32,208 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 01:43:32,208 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 01:43:32,217 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:43:32" (1/1) ... [2020-10-16 01:43:32,232 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:43:32" (1/1) ... [2020-10-16 01:43:32,251 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 01:43:32,252 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 01:43:32,252 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 01:43:32,252 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 01:43:32,259 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:43:32" (1/1) ... [2020-10-16 01:43:32,260 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:43:32" (1/1) ... [2020-10-16 01:43:32,263 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:43:32" (1/1) ... [2020-10-16 01:43:32,263 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:43:32" (1/1) ... [2020-10-16 01:43:32,269 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:43:32" (1/1) ... [2020-10-16 01:43:32,271 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:43:32" (1/1) ... [2020-10-16 01:43:32,273 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:43:32" (1/1) ... [2020-10-16 01:43:32,276 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 01:43:32,277 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 01:43:32,277 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 01:43:32,277 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 01:43:32,278 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:43:32" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 01:43:32,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 01:43:32,333 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 01:43:32,333 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 01:43:32,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 01:43:32,333 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 01:43:32,334 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 01:43:32,334 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 01:43:32,334 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 01:43:32,334 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 01:43:32,334 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 01:43:32,334 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 01:43:32,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 01:43:32,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 01:43:32,336 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 01:43:32,676 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 01:43:32,676 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 01:43:32,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:43:32 BoogieIcfgContainer [2020-10-16 01:43:32,679 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 01:43:32,680 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 01:43:32,680 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 01:43:32,683 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 01:43:32,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 01:43:31" (1/3) ... [2020-10-16 01:43:32,684 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e118089 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:43:32, skipping insertion in model container [2020-10-16 01:43:32,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:43:32" (2/3) ... [2020-10-16 01:43:32,685 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e118089 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:43:32, skipping insertion in model container [2020-10-16 01:43:32,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:43:32" (3/3) ... [2020-10-16 01:43:32,686 INFO L111 eAbstractionObserver]: Analyzing ICFG safe025_pso.opt.i [2020-10-16 01:43:32,697 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 01:43:32,704 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 01:43:32,705 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 01:43:32,730 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:43:32,731 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:43:32,731 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:43:32,731 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:43:32,732 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:43:32,732 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:43:32,733 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:43:32,733 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:43:32,733 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:43:32,733 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:43:32,734 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:43:32,734 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:43:32,734 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:43:32,734 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:43:32,735 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:43:32,735 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:43:32,735 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:43:32,735 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:43:32,739 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:43:32,739 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:43:32,740 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:43:32,740 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:43:32,749 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:43:32,749 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:43:32,750 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:43:32,750 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:43:32,761 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:43:32,761 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:43:32,761 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:43:32,761 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:43:32,787 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 01:43:32,804 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 01:43:32,804 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 01:43:32,804 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 01:43:32,804 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 01:43:32,805 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 01:43:32,805 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 01:43:32,805 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 01:43:32,805 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 01:43:32,817 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-10-16 01:43:32,860 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-10-16 01:43:32,860 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:43:32,865 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-16 01:43:32,865 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 70 transitions, 155 flow [2020-10-16 01:43:32,871 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 65 places, 56 transitions, 121 flow [2020-10-16 01:43:32,873 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 01:43:32,875 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 65 places, 56 transitions, 121 flow [2020-10-16 01:43:32,878 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 65 places, 56 transitions, 121 flow [2020-10-16 01:43:32,878 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 65 places, 56 transitions, 121 flow [2020-10-16 01:43:32,897 INFO L129 PetriNetUnfolder]: 1/56 cut-off events. [2020-10-16 01:43:32,897 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:43:32,898 INFO L80 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 56 events. 1/56 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 48 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2020-10-16 01:43:32,900 INFO L117 LiptonReduction]: Number of co-enabled transitions 864 [2020-10-16 01:43:34,230 INFO L132 LiptonReduction]: Checked pairs total: 1636 [2020-10-16 01:43:34,230 INFO L134 LiptonReduction]: Total number of compositions: 42 [2020-10-16 01:43:34,232 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1361 [2020-10-16 01:43:34,240 INFO L129 PetriNetUnfolder]: 0/15 cut-off events. [2020-10-16 01:43:34,241 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:43:34,241 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:43:34,242 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:43:34,242 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:43:34,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:43:34,248 INFO L82 PathProgramCache]: Analyzing trace with hash -1555680932, now seen corresponding path program 1 times [2020-10-16 01:43:34,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:43:34,258 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826950445] [2020-10-16 01:43:34,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:43:34,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:43:34,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:43:34,493 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826950445] [2020-10-16 01:43:34,494 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:43:34,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 01:43:34,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575081498] [2020-10-16 01:43:34,505 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:43:34,506 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:43:34,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:43:34,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:43:34,526 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 112 [2020-10-16 01:43:34,529 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 43 flow. Second operand 3 states. [2020-10-16 01:43:34,530 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:43:34,530 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 112 [2020-10-16 01:43:34,531 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:43:34,575 INFO L129 PetriNetUnfolder]: 21/70 cut-off events. [2020-10-16 01:43:34,576 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:43:34,577 INFO L80 FinitePrefix]: Finished finitePrefix Result has 122 conditions, 70 events. 21/70 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 238 event pairs, 11 based on Foata normal form. 3/68 useless extension candidates. Maximal degree in co-relation 112. Up to 37 conditions per place. [2020-10-16 01:43:34,579 INFO L132 encePairwiseOnDemand]: 109/112 looper letters, 6 selfloop transitions, 2 changer transitions 0/19 dead transitions. [2020-10-16 01:43:34,579 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 19 transitions, 63 flow [2020-10-16 01:43:34,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:43:34,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:43:34,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 276 transitions. [2020-10-16 01:43:34,595 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8214285714285714 [2020-10-16 01:43:34,596 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 276 transitions. [2020-10-16 01:43:34,596 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 276 transitions. [2020-10-16 01:43:34,598 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:43:34,601 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 276 transitions. [2020-10-16 01:43:34,605 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:43:34,611 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:43:34,612 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:43:34,614 INFO L185 Difference]: Start difference. First operand has 27 places, 17 transitions, 43 flow. Second operand 3 states and 276 transitions. [2020-10-16 01:43:34,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 19 transitions, 63 flow [2020-10-16 01:43:34,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 19 transitions, 60 flow, removed 0 selfloop flow, removed 3 redundant places. [2020-10-16 01:43:34,620 INFO L241 Difference]: Finished difference. Result has 27 places, 17 transitions, 48 flow [2020-10-16 01:43:34,623 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=48, PETRI_PLACES=27, PETRI_TRANSITIONS=17} [2020-10-16 01:43:34,624 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 0 predicate places. [2020-10-16 01:43:34,624 INFO L481 AbstractCegarLoop]: Abstraction has has 27 places, 17 transitions, 48 flow [2020-10-16 01:43:34,624 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:43:34,624 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:43:34,625 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:43:34,625 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 01:43:34,625 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:43:34,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:43:34,626 INFO L82 PathProgramCache]: Analyzing trace with hash -981469325, now seen corresponding path program 1 times [2020-10-16 01:43:34,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:43:34,627 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8590057] [2020-10-16 01:43:34,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:43:34,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:43:34,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:43:34,688 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8590057] [2020-10-16 01:43:34,688 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:43:34,689 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:43:34,689 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180294146] [2020-10-16 01:43:34,690 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:43:34,690 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:43:34,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:43:34,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:43:34,693 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 112 [2020-10-16 01:43:34,693 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 48 flow. Second operand 3 states. [2020-10-16 01:43:34,693 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:43:34,693 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 112 [2020-10-16 01:43:34,694 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:43:34,721 INFO L129 PetriNetUnfolder]: 13/45 cut-off events. [2020-10-16 01:43:34,721 INFO L130 PetriNetUnfolder]: For 10/17 co-relation queries the response was YES. [2020-10-16 01:43:34,722 INFO L80 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 45 events. 13/45 cut-off events. For 10/17 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 128 event pairs, 9 based on Foata normal form. 3/45 useless extension candidates. Maximal degree in co-relation 87. Up to 22 conditions per place. [2020-10-16 01:43:34,722 INFO L132 encePairwiseOnDemand]: 109/112 looper letters, 6 selfloop transitions, 2 changer transitions 0/19 dead transitions. [2020-10-16 01:43:34,723 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 19 transitions, 68 flow [2020-10-16 01:43:34,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:43:34,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:43:34,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 276 transitions. [2020-10-16 01:43:34,726 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8214285714285714 [2020-10-16 01:43:34,726 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 276 transitions. [2020-10-16 01:43:34,726 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 276 transitions. [2020-10-16 01:43:34,727 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:43:34,727 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 276 transitions. [2020-10-16 01:43:34,728 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:43:34,729 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:43:34,730 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:43:34,730 INFO L185 Difference]: Start difference. First operand has 27 places, 17 transitions, 48 flow. Second operand 3 states and 276 transitions. [2020-10-16 01:43:34,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 19 transitions, 68 flow [2020-10-16 01:43:34,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 19 transitions, 64 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 01:43:34,732 INFO L241 Difference]: Finished difference. Result has 28 places, 17 transitions, 52 flow [2020-10-16 01:43:34,732 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=52, PETRI_PLACES=28, PETRI_TRANSITIONS=17} [2020-10-16 01:43:34,733 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 1 predicate places. [2020-10-16 01:43:34,733 INFO L481 AbstractCegarLoop]: Abstraction has has 28 places, 17 transitions, 52 flow [2020-10-16 01:43:34,733 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:43:34,733 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:43:34,733 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:43:34,734 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 01:43:34,734 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:43:34,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:43:34,734 INFO L82 PathProgramCache]: Analyzing trace with hash -932507259, now seen corresponding path program 1 times [2020-10-16 01:43:34,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:43:34,735 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762687692] [2020-10-16 01:43:34,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:43:34,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:43:34,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:43:34,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762687692] [2020-10-16 01:43:34,794 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:43:34,794 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 01:43:34,795 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031286587] [2020-10-16 01:43:34,795 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:43:34,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:43:34,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:43:34,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:43:34,797 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 112 [2020-10-16 01:43:34,797 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 17 transitions, 52 flow. Second operand 3 states. [2020-10-16 01:43:34,797 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:43:34,797 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 112 [2020-10-16 01:43:34,797 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:43:34,808 INFO L129 PetriNetUnfolder]: 0/17 cut-off events. [2020-10-16 01:43:34,808 INFO L130 PetriNetUnfolder]: For 9/11 co-relation queries the response was YES. [2020-10-16 01:43:34,810 INFO L80 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 17 events. 0/17 cut-off events. For 9/11 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 15 event pairs, 0 based on Foata normal form. 1/18 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2020-10-16 01:43:34,810 INFO L132 encePairwiseOnDemand]: 109/112 looper letters, 1 selfloop transitions, 2 changer transitions 0/17 dead transitions. [2020-10-16 01:43:34,811 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 17 transitions, 58 flow [2020-10-16 01:43:34,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:43:34,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:43:34,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 283 transitions. [2020-10-16 01:43:34,813 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8422619047619048 [2020-10-16 01:43:34,813 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 283 transitions. [2020-10-16 01:43:34,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 283 transitions. [2020-10-16 01:43:34,814 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:43:34,815 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 283 transitions. [2020-10-16 01:43:34,815 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:43:34,817 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:43:34,817 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:43:34,817 INFO L185 Difference]: Start difference. First operand has 28 places, 17 transitions, 52 flow. Second operand 3 states and 283 transitions. [2020-10-16 01:43:34,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 17 transitions, 58 flow [2020-10-16 01:43:34,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 17 transitions, 54 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 01:43:34,819 INFO L241 Difference]: Finished difference. Result has 29 places, 17 transitions, 56 flow [2020-10-16 01:43:34,820 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=29, PETRI_TRANSITIONS=17} [2020-10-16 01:43:34,820 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 2 predicate places. [2020-10-16 01:43:34,820 INFO L481 AbstractCegarLoop]: Abstraction has has 29 places, 17 transitions, 56 flow [2020-10-16 01:43:34,820 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:43:34,820 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:43:34,821 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:43:34,821 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 01:43:34,821 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:43:34,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:43:34,821 INFO L82 PathProgramCache]: Analyzing trace with hash -187643692, now seen corresponding path program 1 times [2020-10-16 01:43:34,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:43:34,822 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814937563] [2020-10-16 01:43:34,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:43:34,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:43:34,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:43:34,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814937563] [2020-10-16 01:43:34,878 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:43:34,878 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:43:34,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955296976] [2020-10-16 01:43:34,879 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:43:34,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:43:34,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:43:34,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:43:34,881 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 112 [2020-10-16 01:43:34,882 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 17 transitions, 56 flow. Second operand 4 states. [2020-10-16 01:43:34,882 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:43:34,882 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 112 [2020-10-16 01:43:34,882 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:43:34,926 INFO L129 PetriNetUnfolder]: 28/69 cut-off events. [2020-10-16 01:43:34,927 INFO L130 PetriNetUnfolder]: For 80/87 co-relation queries the response was YES. [2020-10-16 01:43:34,928 INFO L80 FinitePrefix]: Finished finitePrefix Result has 165 conditions, 69 events. 28/69 cut-off events. For 80/87 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 215 event pairs, 12 based on Foata normal form. 8/76 useless extension candidates. Maximal degree in co-relation 153. Up to 45 conditions per place. [2020-10-16 01:43:34,928 INFO L132 encePairwiseOnDemand]: 106/112 looper letters, 5 selfloop transitions, 4 changer transitions 7/27 dead transitions. [2020-10-16 01:43:34,929 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 27 transitions, 108 flow [2020-10-16 01:43:34,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 01:43:34,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-16 01:43:34,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 423 transitions. [2020-10-16 01:43:34,931 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7553571428571428 [2020-10-16 01:43:34,931 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 423 transitions. [2020-10-16 01:43:34,931 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 423 transitions. [2020-10-16 01:43:34,932 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:43:34,932 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 423 transitions. [2020-10-16 01:43:34,933 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 6 states. [2020-10-16 01:43:34,934 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 6 states. [2020-10-16 01:43:34,934 INFO L81 ComplementDD]: Finished complementDD. Result 6 states. [2020-10-16 01:43:34,934 INFO L185 Difference]: Start difference. First operand has 29 places, 17 transitions, 56 flow. Second operand 5 states and 423 transitions. [2020-10-16 01:43:34,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 27 transitions, 108 flow [2020-10-16 01:43:34,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 27 transitions, 104 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 01:43:34,936 INFO L241 Difference]: Finished difference. Result has 34 places, 20 transitions, 88 flow [2020-10-16 01:43:34,936 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=88, PETRI_PLACES=34, PETRI_TRANSITIONS=20} [2020-10-16 01:43:34,937 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 7 predicate places. [2020-10-16 01:43:34,937 INFO L481 AbstractCegarLoop]: Abstraction has has 34 places, 20 transitions, 88 flow [2020-10-16 01:43:34,937 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:43:34,937 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:43:34,937 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:43:34,937 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 01:43:34,938 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:43:34,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:43:34,938 INFO L82 PathProgramCache]: Analyzing trace with hash 381601389, now seen corresponding path program 1 times [2020-10-16 01:43:34,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:43:34,939 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447970610] [2020-10-16 01:43:34,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:43:34,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:43:34,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:43:34,974 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447970610] [2020-10-16 01:43:34,975 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:43:34,975 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:43:34,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128560548] [2020-10-16 01:43:34,976 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:43:34,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:43:34,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:43:34,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:43:34,978 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 112 [2020-10-16 01:43:34,978 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 20 transitions, 88 flow. Second operand 4 states. [2020-10-16 01:43:34,978 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:43:34,978 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 112 [2020-10-16 01:43:34,978 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:43:35,018 INFO L129 PetriNetUnfolder]: 60/141 cut-off events. [2020-10-16 01:43:35,018 INFO L130 PetriNetUnfolder]: For 381/409 co-relation queries the response was YES. [2020-10-16 01:43:35,020 INFO L80 FinitePrefix]: Finished finitePrefix Result has 423 conditions, 141 events. 60/141 cut-off events. For 381/409 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 600 event pairs, 22 based on Foata normal form. 16/145 useless extension candidates. Maximal degree in co-relation 408. Up to 93 conditions per place. [2020-10-16 01:43:35,021 INFO L132 encePairwiseOnDemand]: 108/112 looper letters, 6 selfloop transitions, 3 changer transitions 1/24 dead transitions. [2020-10-16 01:43:35,021 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 24 transitions, 118 flow [2020-10-16 01:43:35,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 01:43:35,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 01:43:35,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 351 transitions. [2020-10-16 01:43:35,023 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7834821428571429 [2020-10-16 01:43:35,023 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 351 transitions. [2020-10-16 01:43:35,023 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 351 transitions. [2020-10-16 01:43:35,024 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:43:35,024 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 351 transitions. [2020-10-16 01:43:35,025 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 01:43:35,025 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 01:43:35,026 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 01:43:35,026 INFO L185 Difference]: Start difference. First operand has 34 places, 20 transitions, 88 flow. Second operand 4 states and 351 transitions. [2020-10-16 01:43:35,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 24 transitions, 118 flow [2020-10-16 01:43:35,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 24 transitions, 112 flow, removed 1 selfloop flow, removed 2 redundant places. [2020-10-16 01:43:35,029 INFO L241 Difference]: Finished difference. Result has 34 places, 20 transitions, 92 flow [2020-10-16 01:43:35,029 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=92, PETRI_PLACES=34, PETRI_TRANSITIONS=20} [2020-10-16 01:43:35,029 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 7 predicate places. [2020-10-16 01:43:35,030 INFO L481 AbstractCegarLoop]: Abstraction has has 34 places, 20 transitions, 92 flow [2020-10-16 01:43:35,030 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:43:35,030 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:43:35,030 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:43:35,030 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 01:43:35,030 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:43:35,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:43:35,031 INFO L82 PathProgramCache]: Analyzing trace with hash 529727139, now seen corresponding path program 2 times [2020-10-16 01:43:35,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:43:35,031 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790811843] [2020-10-16 01:43:35,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:43:35,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:43:35,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:43:35,074 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790811843] [2020-10-16 01:43:35,075 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:43:35,075 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:43:35,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997777689] [2020-10-16 01:43:35,075 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 01:43:35,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:43:35,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 01:43:35,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 01:43:35,077 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 112 [2020-10-16 01:43:35,078 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 20 transitions, 92 flow. Second operand 5 states. [2020-10-16 01:43:35,078 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:43:35,078 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 112 [2020-10-16 01:43:35,078 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:43:35,136 INFO L129 PetriNetUnfolder]: 16/50 cut-off events. [2020-10-16 01:43:35,137 INFO L130 PetriNetUnfolder]: For 143/154 co-relation queries the response was YES. [2020-10-16 01:43:35,137 INFO L80 FinitePrefix]: Finished finitePrefix Result has 190 conditions, 50 events. 16/50 cut-off events. For 143/154 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 131 event pairs, 2 based on Foata normal form. 12/61 useless extension candidates. Maximal degree in co-relation 174. Up to 35 conditions per place. [2020-10-16 01:43:35,138 INFO L132 encePairwiseOnDemand]: 106/112 looper letters, 5 selfloop transitions, 7 changer transitions 7/30 dead transitions. [2020-10-16 01:43:35,138 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 30 transitions, 188 flow [2020-10-16 01:43:35,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 01:43:35,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 01:43:35,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 507 transitions. [2020-10-16 01:43:35,140 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7544642857142857 [2020-10-16 01:43:35,140 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 507 transitions. [2020-10-16 01:43:35,141 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 507 transitions. [2020-10-16 01:43:35,141 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:43:35,141 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 507 transitions. [2020-10-16 01:43:35,142 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 01:43:35,143 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 01:43:35,144 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 01:43:35,144 INFO L185 Difference]: Start difference. First operand has 34 places, 20 transitions, 92 flow. Second operand 6 states and 507 transitions. [2020-10-16 01:43:35,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 30 transitions, 188 flow [2020-10-16 01:43:35,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 30 transitions, 176 flow, removed 2 selfloop flow, removed 4 redundant places. [2020-10-16 01:43:35,147 INFO L241 Difference]: Finished difference. Result has 38 places, 23 transitions, 136 flow [2020-10-16 01:43:35,147 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=136, PETRI_PLACES=38, PETRI_TRANSITIONS=23} [2020-10-16 01:43:35,147 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 11 predicate places. [2020-10-16 01:43:35,147 INFO L481 AbstractCegarLoop]: Abstraction has has 38 places, 23 transitions, 136 flow [2020-10-16 01:43:35,147 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 01:43:35,148 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:43:35,148 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:43:35,148 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 01:43:35,148 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:43:35,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:43:35,148 INFO L82 PathProgramCache]: Analyzing trace with hash -1640147321, now seen corresponding path program 1 times [2020-10-16 01:43:35,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:43:35,149 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842828781] [2020-10-16 01:43:35,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:43:35,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:43:35,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:43:35,176 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842828781] [2020-10-16 01:43:35,176 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:43:35,176 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:43:35,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178776237] [2020-10-16 01:43:35,177 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:43:35,177 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:43:35,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:43:35,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:43:35,178 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 112 [2020-10-16 01:43:35,179 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 23 transitions, 136 flow. Second operand 4 states. [2020-10-16 01:43:35,179 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:43:35,179 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 112 [2020-10-16 01:43:35,179 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:43:35,210 INFO L129 PetriNetUnfolder]: 27/83 cut-off events. [2020-10-16 01:43:35,211 INFO L130 PetriNetUnfolder]: For 273/297 co-relation queries the response was YES. [2020-10-16 01:43:35,211 INFO L80 FinitePrefix]: Finished finitePrefix Result has 321 conditions, 83 events. 27/83 cut-off events. For 273/297 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 273 event pairs, 6 based on Foata normal form. 12/93 useless extension candidates. Maximal degree in co-relation 304. Up to 51 conditions per place. [2020-10-16 01:43:35,212 INFO L132 encePairwiseOnDemand]: 108/112 looper letters, 5 selfloop transitions, 2 changer transitions 4/28 dead transitions. [2020-10-16 01:43:35,212 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 28 transitions, 171 flow [2020-10-16 01:43:35,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 01:43:35,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-16 01:43:35,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 437 transitions. [2020-10-16 01:43:35,214 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7803571428571429 [2020-10-16 01:43:35,215 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 437 transitions. [2020-10-16 01:43:35,215 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 437 transitions. [2020-10-16 01:43:35,215 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:43:35,215 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 437 transitions. [2020-10-16 01:43:35,216 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 6 states. [2020-10-16 01:43:35,217 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 6 states. [2020-10-16 01:43:35,217 INFO L81 ComplementDD]: Finished complementDD. Result 6 states. [2020-10-16 01:43:35,218 INFO L185 Difference]: Start difference. First operand has 38 places, 23 transitions, 136 flow. Second operand 5 states and 437 transitions. [2020-10-16 01:43:35,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 28 transitions, 171 flow [2020-10-16 01:43:35,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 28 transitions, 141 flow, removed 11 selfloop flow, removed 4 redundant places. [2020-10-16 01:43:35,220 INFO L241 Difference]: Finished difference. Result has 38 places, 23 transitions, 116 flow [2020-10-16 01:43:35,221 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=116, PETRI_PLACES=38, PETRI_TRANSITIONS=23} [2020-10-16 01:43:35,221 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 11 predicate places. [2020-10-16 01:43:35,221 INFO L481 AbstractCegarLoop]: Abstraction has has 38 places, 23 transitions, 116 flow [2020-10-16 01:43:35,221 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:43:35,221 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:43:35,221 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:43:35,222 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 01:43:35,222 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:43:35,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:43:35,222 INFO L82 PathProgramCache]: Analyzing trace with hash -2059638127, now seen corresponding path program 2 times [2020-10-16 01:43:35,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:43:35,223 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628197370] [2020-10-16 01:43:35,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:43:35,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:43:35,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:43:35,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628197370] [2020-10-16 01:43:35,268 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:43:35,268 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 01:43:35,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730705602] [2020-10-16 01:43:35,269 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 01:43:35,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:43:35,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 01:43:35,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-16 01:43:35,271 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 112 [2020-10-16 01:43:35,271 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 23 transitions, 116 flow. Second operand 6 states. [2020-10-16 01:43:35,271 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:43:35,271 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 112 [2020-10-16 01:43:35,272 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:43:35,318 INFO L129 PetriNetUnfolder]: 7/32 cut-off events. [2020-10-16 01:43:35,319 INFO L130 PetriNetUnfolder]: For 72/101 co-relation queries the response was YES. [2020-10-16 01:43:35,319 INFO L80 FinitePrefix]: Finished finitePrefix Result has 119 conditions, 32 events. 7/32 cut-off events. For 72/101 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 43 event pairs, 0 based on Foata normal form. 17/48 useless extension candidates. Maximal degree in co-relation 103. Up to 17 conditions per place. [2020-10-16 01:43:35,319 INFO L132 encePairwiseOnDemand]: 106/112 looper letters, 2 selfloop transitions, 10 changer transitions 4/27 dead transitions. [2020-10-16 01:43:35,320 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 27 transitions, 178 flow [2020-10-16 01:43:35,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 01:43:35,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-16 01:43:35,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 585 transitions. [2020-10-16 01:43:35,322 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7461734693877551 [2020-10-16 01:43:35,322 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 585 transitions. [2020-10-16 01:43:35,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 585 transitions. [2020-10-16 01:43:35,323 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:43:35,323 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 585 transitions. [2020-10-16 01:43:35,324 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-16 01:43:35,326 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-16 01:43:35,326 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-16 01:43:35,326 INFO L185 Difference]: Start difference. First operand has 38 places, 23 transitions, 116 flow. Second operand 7 states and 585 transitions. [2020-10-16 01:43:35,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 27 transitions, 178 flow [2020-10-16 01:43:35,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 27 transitions, 156 flow, removed 8 selfloop flow, removed 4 redundant places. [2020-10-16 01:43:35,328 INFO L241 Difference]: Finished difference. Result has 41 places, 23 transitions, 132 flow [2020-10-16 01:43:35,328 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=132, PETRI_PLACES=41, PETRI_TRANSITIONS=23} [2020-10-16 01:43:35,329 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 14 predicate places. [2020-10-16 01:43:35,329 INFO L481 AbstractCegarLoop]: Abstraction has has 41 places, 23 transitions, 132 flow [2020-10-16 01:43:35,329 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 01:43:35,329 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:43:35,329 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:43:35,329 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 01:43:35,329 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:43:35,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:43:35,330 INFO L82 PathProgramCache]: Analyzing trace with hash 263191936, now seen corresponding path program 1 times [2020-10-16 01:43:35,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:43:35,330 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088702434] [2020-10-16 01:43:35,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:43:35,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:43:35,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:43:35,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088702434] [2020-10-16 01:43:35,359 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:43:35,359 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:43:35,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025874477] [2020-10-16 01:43:35,360 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:43:35,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:43:35,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:43:35,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:43:35,361 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 112 [2020-10-16 01:43:35,362 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 23 transitions, 132 flow. Second operand 4 states. [2020-10-16 01:43:35,362 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:43:35,362 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 112 [2020-10-16 01:43:35,362 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:43:35,384 INFO L129 PetriNetUnfolder]: 13/51 cut-off events. [2020-10-16 01:43:35,385 INFO L130 PetriNetUnfolder]: For 92/103 co-relation queries the response was YES. [2020-10-16 01:43:35,385 INFO L80 FinitePrefix]: Finished finitePrefix Result has 179 conditions, 51 events. 13/51 cut-off events. For 92/103 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 132 event pairs, 1 based on Foata normal form. 3/52 useless extension candidates. Maximal degree in co-relation 162. Up to 23 conditions per place. [2020-10-16 01:43:35,386 INFO L132 encePairwiseOnDemand]: 109/112 looper letters, 5 selfloop transitions, 1 changer transitions 2/25 dead transitions. [2020-10-16 01:43:35,386 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 25 transitions, 156 flow [2020-10-16 01:43:35,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 01:43:35,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 01:43:35,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 353 transitions. [2020-10-16 01:43:35,387 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7879464285714286 [2020-10-16 01:43:35,388 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 353 transitions. [2020-10-16 01:43:35,388 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 353 transitions. [2020-10-16 01:43:35,388 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:43:35,388 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 353 transitions. [2020-10-16 01:43:35,389 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 01:43:35,390 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 01:43:35,390 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 01:43:35,390 INFO L185 Difference]: Start difference. First operand has 41 places, 23 transitions, 132 flow. Second operand 4 states and 353 transitions. [2020-10-16 01:43:35,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 25 transitions, 156 flow [2020-10-16 01:43:35,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 25 transitions, 119 flow, removed 10 selfloop flow, removed 7 redundant places. [2020-10-16 01:43:35,392 INFO L241 Difference]: Finished difference. Result has 37 places, 23 transitions, 103 flow [2020-10-16 01:43:35,392 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=103, PETRI_PLACES=37, PETRI_TRANSITIONS=23} [2020-10-16 01:43:35,392 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 10 predicate places. [2020-10-16 01:43:35,393 INFO L481 AbstractCegarLoop]: Abstraction has has 37 places, 23 transitions, 103 flow [2020-10-16 01:43:35,393 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:43:35,393 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:43:35,393 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:43:35,393 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-16 01:43:35,393 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:43:35,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:43:35,394 INFO L82 PathProgramCache]: Analyzing trace with hash -1879784306, now seen corresponding path program 2 times [2020-10-16 01:43:35,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:43:35,394 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409962378] [2020-10-16 01:43:35,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:43:35,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:43:35,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:43:35,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409962378] [2020-10-16 01:43:35,421 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:43:35,422 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:43:35,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532193786] [2020-10-16 01:43:35,422 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:43:35,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:43:35,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:43:35,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:43:35,424 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 112 [2020-10-16 01:43:35,424 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 23 transitions, 103 flow. Second operand 4 states. [2020-10-16 01:43:35,424 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:43:35,424 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 112 [2020-10-16 01:43:35,424 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:43:35,438 INFO L129 PetriNetUnfolder]: 7/37 cut-off events. [2020-10-16 01:43:35,438 INFO L130 PetriNetUnfolder]: For 26/29 co-relation queries the response was YES. [2020-10-16 01:43:35,438 INFO L80 FinitePrefix]: Finished finitePrefix Result has 105 conditions, 37 events. 7/37 cut-off events. For 26/29 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 73 event pairs, 0 based on Foata normal form. 2/37 useless extension candidates. Maximal degree in co-relation 96. Up to 12 conditions per place. [2020-10-16 01:43:35,439 INFO L132 encePairwiseOnDemand]: 109/112 looper letters, 0 selfloop transitions, 0 changer transitions 23/23 dead transitions. [2020-10-16 01:43:35,439 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 23 transitions, 109 flow [2020-10-16 01:43:35,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 01:43:35,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 01:43:35,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 357 transitions. [2020-10-16 01:43:35,440 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.796875 [2020-10-16 01:43:35,440 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 357 transitions. [2020-10-16 01:43:35,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 357 transitions. [2020-10-16 01:43:35,441 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:43:35,441 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 357 transitions. [2020-10-16 01:43:35,442 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 01:43:35,443 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 01:43:35,443 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 01:43:35,443 INFO L185 Difference]: Start difference. First operand has 37 places, 23 transitions, 103 flow. Second operand 4 states and 357 transitions. [2020-10-16 01:43:35,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 23 transitions, 109 flow [2020-10-16 01:43:35,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 23 transitions, 108 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 01:43:35,444 INFO L241 Difference]: Finished difference. Result has 37 places, 0 transitions, 0 flow [2020-10-16 01:43:35,445 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=37, PETRI_TRANSITIONS=0} [2020-10-16 01:43:35,445 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 10 predicate places. [2020-10-16 01:43:35,445 INFO L481 AbstractCegarLoop]: Abstraction has has 37 places, 0 transitions, 0 flow [2020-10-16 01:43:35,445 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:43:35,445 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-16 01:43:35,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 01:43:35 BasicIcfg [2020-10-16 01:43:35,449 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 01:43:35,452 INFO L168 Benchmark]: Toolchain (without parser) took 3877.97 ms. Allocated memory was 252.2 MB in the beginning and 369.6 MB in the end (delta: 117.4 MB). Free memory was 205.4 MB in the beginning and 208.6 MB in the end (delta: -3.1 MB). Peak memory consumption was 114.3 MB. Max. memory is 14.2 GB. [2020-10-16 01:43:35,452 INFO L168 Benchmark]: CDTParser took 0.39 ms. Allocated memory is still 252.2 MB. Free memory is still 226.0 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 01:43:35,453 INFO L168 Benchmark]: CACSL2BoogieTranslator took 633.77 ms. Allocated memory was 252.2 MB in the beginning and 314.0 MB in the end (delta: 61.9 MB). Free memory was 205.4 MB in the beginning and 267.4 MB in the end (delta: -62.0 MB). Peak memory consumption was 27.6 MB. Max. memory is 14.2 GB. [2020-10-16 01:43:35,454 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.53 ms. Allocated memory is still 314.0 MB. Free memory was 267.4 MB in the beginning and 264.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 01:43:35,455 INFO L168 Benchmark]: Boogie Preprocessor took 24.63 ms. Allocated memory is still 314.0 MB. Free memory was 264.9 MB in the beginning and 262.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 01:43:35,455 INFO L168 Benchmark]: RCFGBuilder took 401.88 ms. Allocated memory is still 314.0 MB. Free memory was 262.4 MB in the beginning and 240.6 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. [2020-10-16 01:43:35,456 INFO L168 Benchmark]: TraceAbstraction took 2769.60 ms. Allocated memory was 314.0 MB in the beginning and 369.6 MB in the end (delta: 55.6 MB). Free memory was 240.6 MB in the beginning and 208.6 MB in the end (delta: 32.0 MB). Peak memory consumption was 87.5 MB. Max. memory is 14.2 GB. [2020-10-16 01:43:35,460 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39 ms. Allocated memory is still 252.2 MB. Free memory is still 226.0 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 633.77 ms. Allocated memory was 252.2 MB in the beginning and 314.0 MB in the end (delta: 61.9 MB). Free memory was 205.4 MB in the beginning and 267.4 MB in the end (delta: -62.0 MB). Peak memory consumption was 27.6 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 43.53 ms. Allocated memory is still 314.0 MB. Free memory was 267.4 MB in the beginning and 264.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 24.63 ms. Allocated memory is still 314.0 MB. Free memory was 264.9 MB in the beginning and 262.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 401.88 ms. Allocated memory is still 314.0 MB. Free memory was 262.4 MB in the beginning and 240.6 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. * TraceAbstraction took 2769.60 ms. Allocated memory was 314.0 MB in the beginning and 369.6 MB in the end (delta: 55.6 MB). Free memory was 240.6 MB in the beginning and 208.6 MB in the end (delta: 32.0 MB). Peak memory consumption was 87.5 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 596 VarBasedMoverChecksPositive, 54 VarBasedMoverChecksNegative, 12 SemBasedMoverChecksPositive, 42 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 72 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.3s, 65 PlacesBefore, 27 PlacesAfterwards, 56 TransitionsBefore, 17 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 5 FixpointIterations, 14 TrivialSequentialCompositions, 23 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 1 ChoiceCompositions, 42 TotalNumberOfCompositions, 1636 MoverChecksTotal - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2.6s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.4s, HoareTripleCheckerStatistics: 41 SDtfs, 24 SDslu, 19 SDs, 0 SdLazy, 141 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=136occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 124 NumberOfCodeBlocks, 124 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 114 ConstructedInterpolants, 0 QuantifiedInterpolants, 3570 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...