/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe017_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bf34d27 [2022-01-18 22:51:33,212 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-18 22:51:33,213 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-18 22:51:33,233 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-18 22:51:33,233 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-18 22:51:33,234 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-18 22:51:33,235 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-18 22:51:33,236 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-18 22:51:33,237 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-18 22:51:33,238 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-18 22:51:33,239 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-18 22:51:33,239 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-18 22:51:33,240 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-18 22:51:33,240 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-18 22:51:33,241 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-18 22:51:33,241 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-18 22:51:33,242 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-18 22:51:33,243 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-18 22:51:33,243 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-18 22:51:33,245 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-18 22:51:33,245 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-18 22:51:33,248 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-18 22:51:33,250 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-18 22:51:33,251 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-18 22:51:33,255 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-18 22:51:33,257 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-18 22:51:33,258 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-18 22:51:33,258 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-18 22:51:33,258 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-18 22:51:33,259 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-18 22:51:33,259 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-18 22:51:33,260 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-18 22:51:33,260 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-18 22:51:33,260 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-18 22:51:33,260 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-18 22:51:33,261 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-18 22:51:33,265 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-NoLbe.epf [2022-01-18 22:51:33,292 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-18 22:51:33,292 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-18 22:51:33,293 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-18 22:51:33,293 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-18 22:51:33,293 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-18 22:51:33,293 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-18 22:51:33,293 INFO L138 SettingsManager]: * Use SBE=true [2022-01-18 22:51:33,294 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-18 22:51:33,294 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-18 22:51:33,294 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-18 22:51:33,294 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-18 22:51:33,294 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-18 22:51:33,294 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-18 22:51:33,294 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-18 22:51:33,294 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-18 22:51:33,294 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-18 22:51:33,294 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-18 22:51:33,294 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-18 22:51:33,295 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-18 22:51:33,295 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-18 22:51:33,295 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-18 22:51:33,295 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-18 22:51:33,295 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-18 22:51:33,295 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 22:51:33,295 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-18 22:51:33,295 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-18 22:51:33,295 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-18 22:51:33,295 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-18 22:51:33,296 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-18 22:51:33,296 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-18 22:51:33,296 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-18 22:51:33,296 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-18 22:51:33,482 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-18 22:51:33,497 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-18 22:51:33,499 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-18 22:51:33,500 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-18 22:51:33,500 INFO L275 PluginConnector]: CDTParser initialized [2022-01-18 22:51:33,501 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe017_tso.i [2022-01-18 22:51:33,562 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2599c2437/b57334d6cd5d4233bdca117e24dbc6ed/FLAGc77ab18a2 [2022-01-18 22:51:33,963 INFO L306 CDTParser]: Found 1 translation units. [2022-01-18 22:51:33,964 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe017_tso.i [2022-01-18 22:51:33,971 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2599c2437/b57334d6cd5d4233bdca117e24dbc6ed/FLAGc77ab18a2 [2022-01-18 22:51:34,360 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2599c2437/b57334d6cd5d4233bdca117e24dbc6ed [2022-01-18 22:51:34,361 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-18 22:51:34,362 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-18 22:51:34,363 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-18 22:51:34,363 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-18 22:51:34,365 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-18 22:51:34,365 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 10:51:34" (1/1) ... [2022-01-18 22:51:34,366 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3deda102 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:51:34, skipping insertion in model container [2022-01-18 22:51:34,366 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 10:51:34" (1/1) ... [2022-01-18 22:51:34,375 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-18 22:51:34,405 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-18 22:51:34,528 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe017_tso.i[945,958] [2022-01-18 22:51:34,607 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 22:51:34,611 INFO L203 MainTranslator]: Completed pre-run [2022-01-18 22:51:34,618 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe017_tso.i[945,958] [2022-01-18 22:51:34,637 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 22:51:34,659 INFO L208 MainTranslator]: Completed translation [2022-01-18 22:51:34,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:51:34 WrapperNode [2022-01-18 22:51:34,660 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-18 22:51:34,660 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-18 22:51:34,660 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-18 22:51:34,661 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-18 22:51:34,665 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:51:34" (1/1) ... [2022-01-18 22:51:34,673 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:51:34" (1/1) ... [2022-01-18 22:51:34,686 INFO L137 Inliner]: procedures = 176, calls = 51, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 69 [2022-01-18 22:51:34,686 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-18 22:51:34,687 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-18 22:51:34,687 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-18 22:51:34,687 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-18 22:51:34,691 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:51:34" (1/1) ... [2022-01-18 22:51:34,691 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:51:34" (1/1) ... [2022-01-18 22:51:34,693 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:51:34" (1/1) ... [2022-01-18 22:51:34,693 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:51:34" (1/1) ... [2022-01-18 22:51:34,696 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:51:34" (1/1) ... [2022-01-18 22:51:34,697 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:51:34" (1/1) ... [2022-01-18 22:51:34,698 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:51:34" (1/1) ... [2022-01-18 22:51:34,700 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-18 22:51:34,700 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-18 22:51:34,700 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-18 22:51:34,700 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-18 22:51:34,701 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:51:34" (1/1) ... [2022-01-18 22:51:34,705 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 22:51:34,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 22:51:34,744 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-18 22:51:34,762 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-18 22:51:34,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-18 22:51:34,771 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-01-18 22:51:34,771 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-18 22:51:34,771 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-18 22:51:34,771 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-18 22:51:34,771 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-01-18 22:51:34,771 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-01-18 22:51:34,771 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-01-18 22:51:34,771 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-01-18 22:51:34,772 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-01-18 22:51:34,772 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-01-18 22:51:34,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-18 22:51:34,773 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-18 22:51:34,773 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-18 22:51:34,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-18 22:51:34,774 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-18 22:51:34,891 INFO L234 CfgBuilder]: Building ICFG [2022-01-18 22:51:34,892 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-18 22:51:35,013 INFO L275 CfgBuilder]: Performing block encoding [2022-01-18 22:51:35,018 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-18 22:51:35,018 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-18 22:51:35,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 10:51:35 BoogieIcfgContainer [2022-01-18 22:51:35,020 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-18 22:51:35,022 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-18 22:51:35,022 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-18 22:51:35,028 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-18 22:51:35,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.01 10:51:34" (1/3) ... [2022-01-18 22:51:35,029 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e10de0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 10:51:35, skipping insertion in model container [2022-01-18 22:51:35,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:51:34" (2/3) ... [2022-01-18 22:51:35,029 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e10de0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 10:51:35, skipping insertion in model container [2022-01-18 22:51:35,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 10:51:35" (3/3) ... [2022-01-18 22:51:35,030 INFO L111 eAbstractionObserver]: Analyzing ICFG safe017_tso.i [2022-01-18 22:51:35,033 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-18 22:51:35,033 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-18 22:51:35,034 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-18 22:51:35,067 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:51:35,067 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:51:35,067 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:51:35,068 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:51:35,068 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:51:35,068 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:51:35,068 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:51:35,068 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:51:35,072 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:51:35,072 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:51:35,072 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:51:35,072 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:51:35,073 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:51:35,073 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:51:35,073 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:51:35,074 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:51:35,074 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:51:35,074 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:51:35,074 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:51:35,074 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:51:35,075 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:51:35,075 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:51:35,076 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:51:35,076 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:51:35,076 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:51:35,076 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:51:35,077 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:51:35,077 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:51:35,078 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:51:35,079 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:51:35,079 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:51:35,079 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:51:35,080 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:51:35,080 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:51:35,080 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:51:35,080 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:51:35,088 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:51:35,088 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:51:35,088 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:51:35,088 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:51:35,090 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:51:35,090 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:51:35,090 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:51:35,091 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:51:35,092 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:51:35,093 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:51:35,093 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:51:35,093 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:51:35,094 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-01-18 22:51:35,133 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 22:51:35,143 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-18 22:51:35,143 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-01-18 22:51:35,158 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 97 places, 89 transitions, 193 flow [2022-01-18 22:51:35,196 INFO L129 PetriNetUnfolder]: 2/86 cut-off events. [2022-01-18 22:51:35,196 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-01-18 22:51:35,198 INFO L84 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 86 events. 2/86 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 44 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2022-01-18 22:51:35,198 INFO L82 GeneralOperation]: Start removeDead. Operand has 97 places, 89 transitions, 193 flow [2022-01-18 22:51:35,201 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 81 places, 72 transitions, 153 flow [2022-01-18 22:51:35,215 INFO L129 PetriNetUnfolder]: 1/71 cut-off events. [2022-01-18 22:51:35,215 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-01-18 22:51:35,215 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 22:51:35,216 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 22:51:35,216 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 22:51:35,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 22:51:35,219 INFO L85 PathProgramCache]: Analyzing trace with hash 765436880, now seen corresponding path program 1 times [2022-01-18 22:51:35,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 22:51:35,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092832031] [2022-01-18 22:51:35,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 22:51:35,226 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 22:51:35,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 22:51:35,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 22:51:35,607 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 22:51:35,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092832031] [2022-01-18 22:51:35,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092832031] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 22:51:35,608 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 22:51:35,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 22:51:35,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557873865] [2022-01-18 22:51:35,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 22:51:35,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 22:51:35,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 22:51:35,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 22:51:35,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-18 22:51:35,653 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 89 [2022-01-18 22:51:35,657 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 72 transitions, 153 flow. Second operand has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 22:51:35,657 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 22:51:35,658 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 89 [2022-01-18 22:51:35,658 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 22:51:35,953 INFO L129 PetriNetUnfolder]: 303/715 cut-off events. [2022-01-18 22:51:35,954 INFO L130 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-01-18 22:51:35,956 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1266 conditions, 715 events. 303/715 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3701 event pairs, 15 based on Foata normal form. 27/711 useless extension candidates. Maximal degree in co-relation 1231. Up to 135 conditions per place. [2022-01-18 22:51:35,959 INFO L132 encePairwiseOnDemand]: 78/89 looper letters, 22 selfloop transitions, 6 changer transitions 47/129 dead transitions. [2022-01-18 22:51:35,959 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 129 transitions, 417 flow [2022-01-18 22:51:35,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-18 22:51:35,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-01-18 22:51:35,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 965 transitions. [2022-01-18 22:51:35,972 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8340535868625756 [2022-01-18 22:51:35,972 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 965 transitions. [2022-01-18 22:51:35,972 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 965 transitions. [2022-01-18 22:51:35,975 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 22:51:35,976 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 965 transitions. [2022-01-18 22:51:35,982 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 74.23076923076923) internal successors, (965), 13 states have internal predecessors, (965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 22:51:35,988 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 89.0) internal successors, (1246), 14 states have internal predecessors, (1246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 22:51:35,989 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 89.0) internal successors, (1246), 14 states have internal predecessors, (1246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 22:51:35,991 INFO L186 Difference]: Start difference. First operand has 81 places, 72 transitions, 153 flow. Second operand 13 states and 965 transitions. [2022-01-18 22:51:35,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 129 transitions, 417 flow [2022-01-18 22:51:35,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 129 transitions, 414 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-01-18 22:51:35,996 INFO L242 Difference]: Finished difference. Result has 102 places, 75 transitions, 234 flow [2022-01-18 22:51:35,997 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=234, PETRI_PLACES=102, PETRI_TRANSITIONS=75} [2022-01-18 22:51:35,999 INFO L334 CegarLoopForPetriNet]: 81 programPoint places, 21 predicate places. [2022-01-18 22:51:36,000 INFO L470 AbstractCegarLoop]: Abstraction has has 102 places, 75 transitions, 234 flow [2022-01-18 22:51:36,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 22:51:36,000 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 22:51:36,000 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 22:51:36,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-18 22:51:36,001 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 22:51:36,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 22:51:36,001 INFO L85 PathProgramCache]: Analyzing trace with hash -109867121, now seen corresponding path program 1 times [2022-01-18 22:51:36,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 22:51:36,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629994414] [2022-01-18 22:51:36,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 22:51:36,001 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 22:51:36,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 22:51:36,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 22:51:36,090 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 22:51:36,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629994414] [2022-01-18 22:51:36,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629994414] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 22:51:36,090 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 22:51:36,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 22:51:36,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475637603] [2022-01-18 22:51:36,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 22:51:36,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 22:51:36,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 22:51:36,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 22:51:36,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-18 22:51:36,093 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 89 [2022-01-18 22:51:36,094 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 75 transitions, 234 flow. Second operand has 7 states, 7 states have (on average 69.85714285714286) internal successors, (489), 7 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 22:51:36,094 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 22:51:36,094 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 89 [2022-01-18 22:51:36,094 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 22:51:36,355 INFO L129 PetriNetUnfolder]: 172/677 cut-off events. [2022-01-18 22:51:36,356 INFO L130 PetriNetUnfolder]: For 1281/1352 co-relation queries the response was YES. [2022-01-18 22:51:36,359 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1898 conditions, 677 events. 172/677 cut-off events. For 1281/1352 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 4237 event pairs, 8 based on Foata normal form. 22/684 useless extension candidates. Maximal degree in co-relation 1852. Up to 112 conditions per place. [2022-01-18 22:51:36,362 INFO L132 encePairwiseOnDemand]: 78/89 looper letters, 26 selfloop transitions, 13 changer transitions 52/145 dead transitions. [2022-01-18 22:51:36,362 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 145 transitions, 924 flow [2022-01-18 22:51:36,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-18 22:51:36,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-01-18 22:51:36,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 964 transitions. [2022-01-18 22:51:36,366 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8331892826274849 [2022-01-18 22:51:36,366 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 964 transitions. [2022-01-18 22:51:36,366 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 964 transitions. [2022-01-18 22:51:36,366 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 22:51:36,366 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 964 transitions. [2022-01-18 22:51:36,368 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 74.15384615384616) internal successors, (964), 13 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 22:51:36,370 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 89.0) internal successors, (1246), 14 states have internal predecessors, (1246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 22:51:36,371 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 89.0) internal successors, (1246), 14 states have internal predecessors, (1246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 22:51:36,371 INFO L186 Difference]: Start difference. First operand has 102 places, 75 transitions, 234 flow. Second operand 13 states and 964 transitions. [2022-01-18 22:51:36,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 145 transitions, 924 flow [2022-01-18 22:51:36,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 145 transitions, 896 flow, removed 12 selfloop flow, removed 4 redundant places. [2022-01-18 22:51:36,382 INFO L242 Difference]: Finished difference. Result has 113 places, 84 transitions, 389 flow [2022-01-18 22:51:36,382 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=389, PETRI_PLACES=113, PETRI_TRANSITIONS=84} [2022-01-18 22:51:36,382 INFO L334 CegarLoopForPetriNet]: 81 programPoint places, 32 predicate places. [2022-01-18 22:51:36,383 INFO L470 AbstractCegarLoop]: Abstraction has has 113 places, 84 transitions, 389 flow [2022-01-18 22:51:36,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 69.85714285714286) internal successors, (489), 7 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 22:51:36,383 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 22:51:36,383 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 22:51:36,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-18 22:51:36,383 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 22:51:36,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 22:51:36,384 INFO L85 PathProgramCache]: Analyzing trace with hash 807853648, now seen corresponding path program 1 times [2022-01-18 22:51:36,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 22:51:36,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464309433] [2022-01-18 22:51:36,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 22:51:36,385 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 22:51:36,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 22:51:36,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 22:51:36,502 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 22:51:36,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464309433] [2022-01-18 22:51:36,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464309433] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 22:51:36,502 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 22:51:36,502 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 22:51:36,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450047933] [2022-01-18 22:51:36,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 22:51:36,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 22:51:36,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 22:51:36,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 22:51:36,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-18 22:51:36,505 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 89 [2022-01-18 22:51:36,505 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 84 transitions, 389 flow. Second operand has 7 states, 7 states have (on average 70.0) internal successors, (490), 7 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 22:51:36,505 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 22:51:36,505 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 89 [2022-01-18 22:51:36,505 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 22:51:36,713 INFO L129 PetriNetUnfolder]: 98/438 cut-off events. [2022-01-18 22:51:36,713 INFO L130 PetriNetUnfolder]: For 1772/1986 co-relation queries the response was YES. [2022-01-18 22:51:36,715 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1519 conditions, 438 events. 98/438 cut-off events. For 1772/1986 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2284 event pairs, 10 based on Foata normal form. 13/440 useless extension candidates. Maximal degree in co-relation 1461. Up to 79 conditions per place. [2022-01-18 22:51:36,718 INFO L132 encePairwiseOnDemand]: 78/89 looper letters, 27 selfloop transitions, 17 changer transitions 31/129 dead transitions. [2022-01-18 22:51:36,718 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 129 transitions, 964 flow [2022-01-18 22:51:36,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-18 22:51:36,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-01-18 22:51:36,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 952 transitions. [2022-01-18 22:51:36,720 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8228176318063959 [2022-01-18 22:51:36,721 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 952 transitions. [2022-01-18 22:51:36,721 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 952 transitions. [2022-01-18 22:51:36,721 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 22:51:36,721 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 952 transitions. [2022-01-18 22:51:36,723 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 73.23076923076923) internal successors, (952), 13 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 22:51:36,725 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 89.0) internal successors, (1246), 14 states have internal predecessors, (1246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 22:51:36,725 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 89.0) internal successors, (1246), 14 states have internal predecessors, (1246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 22:51:36,725 INFO L186 Difference]: Start difference. First operand has 113 places, 84 transitions, 389 flow. Second operand 13 states and 952 transitions. [2022-01-18 22:51:36,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 129 transitions, 964 flow [2022-01-18 22:51:36,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 129 transitions, 880 flow, removed 42 selfloop flow, removed 3 redundant places. [2022-01-18 22:51:36,734 INFO L242 Difference]: Finished difference. Result has 124 places, 88 transitions, 489 flow [2022-01-18 22:51:36,734 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=365, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=489, PETRI_PLACES=124, PETRI_TRANSITIONS=88} [2022-01-18 22:51:36,735 INFO L334 CegarLoopForPetriNet]: 81 programPoint places, 43 predicate places. [2022-01-18 22:51:36,735 INFO L470 AbstractCegarLoop]: Abstraction has has 124 places, 88 transitions, 489 flow [2022-01-18 22:51:36,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 70.0) internal successors, (490), 7 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 22:51:36,736 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 22:51:36,736 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 22:51:36,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-18 22:51:36,737 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 22:51:36,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 22:51:36,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1602581462, now seen corresponding path program 1 times [2022-01-18 22:51:36,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 22:51:36,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218462190] [2022-01-18 22:51:36,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 22:51:36,743 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 22:51:36,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 22:51:36,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 22:51:36,869 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 22:51:36,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218462190] [2022-01-18 22:51:36,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218462190] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 22:51:36,870 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 22:51:36,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 22:51:36,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113509321] [2022-01-18 22:51:36,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 22:51:36,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 22:51:36,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 22:51:36,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 22:51:36,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-18 22:51:36,876 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 89 [2022-01-18 22:51:36,876 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 88 transitions, 489 flow. Second operand has 7 states, 7 states have (on average 70.14285714285714) internal successors, (491), 7 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 22:51:36,876 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 22:51:36,877 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 89 [2022-01-18 22:51:36,877 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 22:51:37,067 INFO L129 PetriNetUnfolder]: 71/384 cut-off events. [2022-01-18 22:51:37,067 INFO L130 PetriNetUnfolder]: For 1889/2288 co-relation queries the response was YES. [2022-01-18 22:51:37,069 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1466 conditions, 384 events. 71/384 cut-off events. For 1889/2288 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2031 event pairs, 1 based on Foata normal form. 8/380 useless extension candidates. Maximal degree in co-relation 1410. Up to 65 conditions per place. [2022-01-18 22:51:37,070 INFO L132 encePairwiseOnDemand]: 79/89 looper letters, 30 selfloop transitions, 19 changer transitions 23/126 dead transitions. [2022-01-18 22:51:37,070 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 126 transitions, 1014 flow [2022-01-18 22:51:37,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-18 22:51:37,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-01-18 22:51:37,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 942 transitions. [2022-01-18 22:51:37,072 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8141745894554884 [2022-01-18 22:51:37,073 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 942 transitions. [2022-01-18 22:51:37,073 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 942 transitions. [2022-01-18 22:51:37,073 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 22:51:37,073 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 942 transitions. [2022-01-18 22:51:37,075 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 72.46153846153847) internal successors, (942), 13 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 22:51:37,076 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 89.0) internal successors, (1246), 14 states have internal predecessors, (1246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 22:51:37,078 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 89.0) internal successors, (1246), 14 states have internal predecessors, (1246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 22:51:37,078 INFO L186 Difference]: Start difference. First operand has 124 places, 88 transitions, 489 flow. Second operand 13 states and 942 transitions. [2022-01-18 22:51:37,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 126 transitions, 1014 flow [2022-01-18 22:51:37,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 126 transitions, 874 flow, removed 57 selfloop flow, removed 16 redundant places. [2022-01-18 22:51:37,084 INFO L242 Difference]: Finished difference. Result has 123 places, 91 transitions, 572 flow [2022-01-18 22:51:37,084 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=431, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=572, PETRI_PLACES=123, PETRI_TRANSITIONS=91} [2022-01-18 22:51:37,084 INFO L334 CegarLoopForPetriNet]: 81 programPoint places, 42 predicate places. [2022-01-18 22:51:37,085 INFO L470 AbstractCegarLoop]: Abstraction has has 123 places, 91 transitions, 572 flow [2022-01-18 22:51:37,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 70.14285714285714) internal successors, (491), 7 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 22:51:37,085 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 22:51:37,085 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 22:51:37,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-18 22:51:37,085 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 22:51:37,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 22:51:37,086 INFO L85 PathProgramCache]: Analyzing trace with hash 204671329, now seen corresponding path program 1 times [2022-01-18 22:51:37,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 22:51:37,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188567288] [2022-01-18 22:51:37,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 22:51:37,086 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 22:51:37,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 22:51:37,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 22:51:37,160 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 22:51:37,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188567288] [2022-01-18 22:51:37,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188567288] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 22:51:37,160 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 22:51:37,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 22:51:37,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852194786] [2022-01-18 22:51:37,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 22:51:37,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 22:51:37,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 22:51:37,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 22:51:37,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-18 22:51:37,162 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 89 [2022-01-18 22:51:37,163 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 91 transitions, 572 flow. Second operand has 8 states, 8 states have (on average 69.875) internal successors, (559), 8 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 22:51:37,163 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 22:51:37,163 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 89 [2022-01-18 22:51:37,163 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 22:51:37,263 INFO L129 PetriNetUnfolder]: 72/398 cut-off events. [2022-01-18 22:51:37,263 INFO L130 PetriNetUnfolder]: For 2682/2952 co-relation queries the response was YES. [2022-01-18 22:51:37,265 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1654 conditions, 398 events. 72/398 cut-off events. For 2682/2952 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2163 event pairs, 7 based on Foata normal form. 16/399 useless extension candidates. Maximal degree in co-relation 1587. Up to 79 conditions per place. [2022-01-18 22:51:37,266 INFO L132 encePairwiseOnDemand]: 78/89 looper letters, 23 selfloop transitions, 13 changer transitions 36/126 dead transitions. [2022-01-18 22:51:37,266 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 126 transitions, 1157 flow [2022-01-18 22:51:37,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 22:51:37,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-01-18 22:51:37,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 594 transitions. [2022-01-18 22:51:37,268 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8342696629213483 [2022-01-18 22:51:37,268 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 594 transitions. [2022-01-18 22:51:37,268 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 594 transitions. [2022-01-18 22:51:37,268 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 22:51:37,268 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 594 transitions. [2022-01-18 22:51:37,269 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 74.25) internal successors, (594), 8 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 22:51:37,270 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 89.0) internal successors, (801), 9 states have internal predecessors, (801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 22:51:37,270 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 89.0) internal successors, (801), 9 states have internal predecessors, (801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 22:51:37,270 INFO L186 Difference]: Start difference. First operand has 123 places, 91 transitions, 572 flow. Second operand 8 states and 594 transitions. [2022-01-18 22:51:37,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 126 transitions, 1157 flow [2022-01-18 22:51:37,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 126 transitions, 1068 flow, removed 31 selfloop flow, removed 7 redundant places. [2022-01-18 22:51:37,278 INFO L242 Difference]: Finished difference. Result has 118 places, 83 transitions, 471 flow [2022-01-18 22:51:37,278 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=533, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=471, PETRI_PLACES=118, PETRI_TRANSITIONS=83} [2022-01-18 22:51:37,278 INFO L334 CegarLoopForPetriNet]: 81 programPoint places, 37 predicate places. [2022-01-18 22:51:37,279 INFO L470 AbstractCegarLoop]: Abstraction has has 118 places, 83 transitions, 471 flow [2022-01-18 22:51:37,279 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 69.875) internal successors, (559), 8 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 22:51:37,279 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 22:51:37,279 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 22:51:37,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-18 22:51:37,279 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 22:51:37,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 22:51:37,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1449630669, now seen corresponding path program 1 times [2022-01-18 22:51:37,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 22:51:37,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882381959] [2022-01-18 22:51:37,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 22:51:37,280 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 22:51:37,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 22:51:37,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 22:51:37,337 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 22:51:37,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882381959] [2022-01-18 22:51:37,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882381959] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 22:51:37,337 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 22:51:37,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 22:51:37,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672828263] [2022-01-18 22:51:37,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 22:51:37,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 22:51:37,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 22:51:37,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 22:51:37,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-18 22:51:37,339 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 89 [2022-01-18 22:51:37,339 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 83 transitions, 471 flow. Second operand has 6 states, 6 states have (on average 73.66666666666667) internal successors, (442), 6 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 22:51:37,339 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 22:51:37,339 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 89 [2022-01-18 22:51:37,355 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 22:51:37,493 INFO L129 PetriNetUnfolder]: 413/1100 cut-off events. [2022-01-18 22:51:37,493 INFO L130 PetriNetUnfolder]: For 1011/1068 co-relation queries the response was YES. [2022-01-18 22:51:37,497 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2351 conditions, 1100 events. 413/1100 cut-off events. For 1011/1068 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 8071 event pairs, 10 based on Foata normal form. 9/1009 useless extension candidates. Maximal degree in co-relation 2285. Up to 293 conditions per place. [2022-01-18 22:51:37,500 INFO L132 encePairwiseOnDemand]: 79/89 looper letters, 20 selfloop transitions, 15 changer transitions 11/115 dead transitions. [2022-01-18 22:51:37,500 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 115 transitions, 631 flow [2022-01-18 22:51:37,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-18 22:51:37,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-18 22:51:37,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 768 transitions. [2022-01-18 22:51:37,502 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8629213483146068 [2022-01-18 22:51:37,502 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 768 transitions. [2022-01-18 22:51:37,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 768 transitions. [2022-01-18 22:51:37,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 22:51:37,502 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 768 transitions. [2022-01-18 22:51:37,503 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 76.8) internal successors, (768), 10 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 22:51:37,504 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 89.0) internal successors, (979), 11 states have internal predecessors, (979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 22:51:37,505 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 89.0) internal successors, (979), 11 states have internal predecessors, (979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 22:51:37,505 INFO L186 Difference]: Start difference. First operand has 118 places, 83 transitions, 471 flow. Second operand 10 states and 768 transitions. [2022-01-18 22:51:37,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 115 transitions, 631 flow [2022-01-18 22:51:37,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 115 transitions, 566 flow, removed 12 selfloop flow, removed 12 redundant places. [2022-01-18 22:51:37,510 INFO L242 Difference]: Finished difference. Result has 118 places, 98 transitions, 515 flow [2022-01-18 22:51:37,510 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=406, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=515, PETRI_PLACES=118, PETRI_TRANSITIONS=98} [2022-01-18 22:51:37,511 INFO L334 CegarLoopForPetriNet]: 81 programPoint places, 37 predicate places. [2022-01-18 22:51:37,512 INFO L470 AbstractCegarLoop]: Abstraction has has 118 places, 98 transitions, 515 flow [2022-01-18 22:51:37,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 73.66666666666667) internal successors, (442), 6 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 22:51:37,512 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 22:51:37,512 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 22:51:37,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-18 22:51:37,512 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 22:51:37,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 22:51:37,513 INFO L85 PathProgramCache]: Analyzing trace with hash 965022395, now seen corresponding path program 1 times [2022-01-18 22:51:37,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 22:51:37,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902993837] [2022-01-18 22:51:37,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 22:51:37,513 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 22:51:37,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 22:51:37,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 22:51:37,581 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 22:51:37,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902993837] [2022-01-18 22:51:37,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902993837] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 22:51:37,581 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 22:51:37,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 22:51:37,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835261489] [2022-01-18 22:51:37,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 22:51:37,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 22:51:37,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 22:51:37,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 22:51:37,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-18 22:51:37,583 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 89 [2022-01-18 22:51:37,583 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 98 transitions, 515 flow. Second operand has 7 states, 7 states have (on average 73.57142857142857) internal successors, (515), 7 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 22:51:37,583 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 22:51:37,583 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 89 [2022-01-18 22:51:37,583 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 22:51:37,767 INFO L129 PetriNetUnfolder]: 287/970 cut-off events. [2022-01-18 22:51:37,767 INFO L130 PetriNetUnfolder]: For 1624/1778 co-relation queries the response was YES. [2022-01-18 22:51:37,770 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2976 conditions, 970 events. 287/970 cut-off events. For 1624/1778 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 7685 event pairs, 0 based on Foata normal form. 61/976 useless extension candidates. Maximal degree in co-relation 2913. Up to 215 conditions per place. [2022-01-18 22:51:37,772 INFO L132 encePairwiseOnDemand]: 79/89 looper letters, 23 selfloop transitions, 17 changer transitions 30/136 dead transitions. [2022-01-18 22:51:37,772 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 136 transitions, 829 flow [2022-01-18 22:51:37,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-18 22:51:37,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-01-18 22:51:37,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 995 transitions. [2022-01-18 22:51:37,774 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8599827139152982 [2022-01-18 22:51:37,774 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 995 transitions. [2022-01-18 22:51:37,774 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 995 transitions. [2022-01-18 22:51:37,776 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 22:51:37,777 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 995 transitions. [2022-01-18 22:51:37,778 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 76.53846153846153) internal successors, (995), 13 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 22:51:37,780 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 89.0) internal successors, (1246), 14 states have internal predecessors, (1246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 22:51:37,780 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 89.0) internal successors, (1246), 14 states have internal predecessors, (1246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 22:51:37,780 INFO L186 Difference]: Start difference. First operand has 118 places, 98 transitions, 515 flow. Second operand 13 states and 995 transitions. [2022-01-18 22:51:37,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 136 transitions, 829 flow [2022-01-18 22:51:37,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 136 transitions, 779 flow, removed 22 selfloop flow, removed 5 redundant places. [2022-01-18 22:51:37,787 INFO L242 Difference]: Finished difference. Result has 132 places, 99 transitions, 545 flow [2022-01-18 22:51:37,787 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=465, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=545, PETRI_PLACES=132, PETRI_TRANSITIONS=99} [2022-01-18 22:51:37,787 INFO L334 CegarLoopForPetriNet]: 81 programPoint places, 51 predicate places. [2022-01-18 22:51:37,787 INFO L470 AbstractCegarLoop]: Abstraction has has 132 places, 99 transitions, 545 flow [2022-01-18 22:51:37,788 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 73.57142857142857) internal successors, (515), 7 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 22:51:37,788 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 22:51:37,788 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 22:51:37,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-18 22:51:37,788 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 22:51:37,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 22:51:37,789 INFO L85 PathProgramCache]: Analyzing trace with hash 377924634, now seen corresponding path program 1 times [2022-01-18 22:51:37,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 22:51:37,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261013192] [2022-01-18 22:51:37,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 22:51:37,789 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 22:51:37,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 22:51:37,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 22:51:37,872 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 22:51:37,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261013192] [2022-01-18 22:51:37,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261013192] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 22:51:37,873 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 22:51:37,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 22:51:37,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996599444] [2022-01-18 22:51:37,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 22:51:37,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 22:51:37,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 22:51:37,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 22:51:37,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 22:51:37,875 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 89 [2022-01-18 22:51:37,875 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 99 transitions, 545 flow. Second operand has 8 states, 8 states have (on average 73.5) internal successors, (588), 8 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 22:51:37,875 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 22:51:37,875 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 89 [2022-01-18 22:51:37,875 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 22:51:38,053 INFO L129 PetriNetUnfolder]: 92/570 cut-off events. [2022-01-18 22:51:38,054 INFO L130 PetriNetUnfolder]: For 2030/2248 co-relation queries the response was YES. [2022-01-18 22:51:38,055 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2061 conditions, 570 events. 92/570 cut-off events. For 2030/2248 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4477 event pairs, 2 based on Foata normal form. 82/627 useless extension candidates. Maximal degree in co-relation 2034. Up to 151 conditions per place. [2022-01-18 22:51:38,056 INFO L132 encePairwiseOnDemand]: 80/89 looper letters, 14 selfloop transitions, 18 changer transitions 25/118 dead transitions. [2022-01-18 22:51:38,056 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 118 transitions, 783 flow [2022-01-18 22:51:38,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-18 22:51:38,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-01-18 22:51:38,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1129 transitions. [2022-01-18 22:51:38,058 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8456928838951311 [2022-01-18 22:51:38,059 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1129 transitions. [2022-01-18 22:51:38,059 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1129 transitions. [2022-01-18 22:51:38,059 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 22:51:38,059 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1129 transitions. [2022-01-18 22:51:38,061 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 75.26666666666667) internal successors, (1129), 15 states have internal predecessors, (1129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 22:51:38,062 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 89.0) internal successors, (1424), 16 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 22:51:38,063 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 89.0) internal successors, (1424), 16 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 22:51:38,063 INFO L186 Difference]: Start difference. First operand has 132 places, 99 transitions, 545 flow. Second operand 15 states and 1129 transitions. [2022-01-18 22:51:38,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 118 transitions, 783 flow [2022-01-18 22:51:38,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 118 transitions, 736 flow, removed 9 selfloop flow, removed 10 redundant places. [2022-01-18 22:51:38,070 INFO L242 Difference]: Finished difference. Result has 139 places, 88 transitions, 452 flow [2022-01-18 22:51:38,070 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=503, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=452, PETRI_PLACES=139, PETRI_TRANSITIONS=88} [2022-01-18 22:51:38,071 INFO L334 CegarLoopForPetriNet]: 81 programPoint places, 58 predicate places. [2022-01-18 22:51:38,071 INFO L470 AbstractCegarLoop]: Abstraction has has 139 places, 88 transitions, 452 flow [2022-01-18 22:51:38,071 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 73.5) internal successors, (588), 8 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 22:51:38,071 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 22:51:38,071 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 22:51:38,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-18 22:51:38,072 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 22:51:38,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 22:51:38,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1772636443, now seen corresponding path program 1 times [2022-01-18 22:51:38,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 22:51:38,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595650063] [2022-01-18 22:51:38,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 22:51:38,072 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 22:51:38,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 22:51:38,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 22:51:38,138 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 22:51:38,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595650063] [2022-01-18 22:51:38,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595650063] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 22:51:38,138 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 22:51:38,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 22:51:38,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546391731] [2022-01-18 22:51:38,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 22:51:38,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 22:51:38,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 22:51:38,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 22:51:38,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-18 22:51:38,139 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 89 [2022-01-18 22:51:38,140 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 88 transitions, 452 flow. Second operand has 8 states, 8 states have (on average 70.125) internal successors, (561), 8 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 22:51:38,140 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 22:51:38,140 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 89 [2022-01-18 22:51:38,140 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 22:51:38,206 INFO L129 PetriNetUnfolder]: 38/281 cut-off events. [2022-01-18 22:51:38,206 INFO L130 PetriNetUnfolder]: For 727/767 co-relation queries the response was YES. [2022-01-18 22:51:38,207 INFO L84 FinitePrefix]: Finished finitePrefix Result has 880 conditions, 281 events. 38/281 cut-off events. For 727/767 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1458 event pairs, 0 based on Foata normal form. 1/268 useless extension candidates. Maximal degree in co-relation 851. Up to 67 conditions per place. [2022-01-18 22:51:38,208 INFO L132 encePairwiseOnDemand]: 79/89 looper letters, 0 selfloop transitions, 0 changer transitions 91/91 dead transitions. [2022-01-18 22:51:38,208 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 91 transitions, 527 flow [2022-01-18 22:51:38,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-18 22:51:38,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-01-18 22:51:38,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 637 transitions. [2022-01-18 22:51:38,209 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7952559300873908 [2022-01-18 22:51:38,209 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 637 transitions. [2022-01-18 22:51:38,209 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 637 transitions. [2022-01-18 22:51:38,209 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 22:51:38,209 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 637 transitions. [2022-01-18 22:51:38,210 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 70.77777777777777) internal successors, (637), 9 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 22:51:38,211 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 89.0) internal successors, (890), 10 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 22:51:38,212 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 89.0) internal successors, (890), 10 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 22:51:38,212 INFO L186 Difference]: Start difference. First operand has 139 places, 88 transitions, 452 flow. Second operand 9 states and 637 transitions. [2022-01-18 22:51:38,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 91 transitions, 527 flow [2022-01-18 22:51:38,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 91 transitions, 383 flow, removed 23 selfloop flow, removed 28 redundant places. [2022-01-18 22:51:38,216 INFO L242 Difference]: Finished difference. Result has 112 places, 0 transitions, 0 flow [2022-01-18 22:51:38,216 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=307, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=112, PETRI_TRANSITIONS=0} [2022-01-18 22:51:38,217 INFO L334 CegarLoopForPetriNet]: 81 programPoint places, 31 predicate places. [2022-01-18 22:51:38,217 INFO L470 AbstractCegarLoop]: Abstraction has has 112 places, 0 transitions, 0 flow [2022-01-18 22:51:38,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 70.125) internal successors, (561), 8 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 22:51:38,219 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-01-18 22:51:38,219 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2022-01-18 22:51:38,219 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2022-01-18 22:51:38,219 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2022-01-18 22:51:38,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-18 22:51:38,222 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 22:51:38,223 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-18 22:51:38,223 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-18 22:51:38,225 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.01 10:51:38 BasicIcfg [2022-01-18 22:51:38,225 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-18 22:51:38,226 INFO L158 Benchmark]: Toolchain (without parser) took 3863.78ms. Allocated memory was 394.3MB in the beginning and 555.7MB in the end (delta: 161.5MB). Free memory was 345.5MB in the beginning and 294.2MB in the end (delta: 51.4MB). Peak memory consumption was 212.2MB. Max. memory is 16.0GB. [2022-01-18 22:51:38,226 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 394.3MB. Free memory is still 364.2MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 22:51:38,226 INFO L158 Benchmark]: CACSL2BoogieTranslator took 297.08ms. Allocated memory is still 394.3MB. Free memory was 345.4MB in the beginning and 359.6MB in the end (delta: -14.2MB). Peak memory consumption was 13.6MB. Max. memory is 16.0GB. [2022-01-18 22:51:38,226 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.85ms. Allocated memory is still 394.3MB. Free memory was 359.6MB in the beginning and 357.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-18 22:51:38,227 INFO L158 Benchmark]: Boogie Preprocessor took 13.08ms. Allocated memory is still 394.3MB. Free memory was 357.5MB in the beginning and 356.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-18 22:51:38,227 INFO L158 Benchmark]: RCFGBuilder took 319.71ms. Allocated memory is still 394.3MB. Free memory was 356.0MB in the beginning and 344.0MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2022-01-18 22:51:38,227 INFO L158 Benchmark]: TraceAbstraction took 3203.43ms. Allocated memory was 394.3MB in the beginning and 555.7MB in the end (delta: 161.5MB). Free memory was 343.3MB in the beginning and 294.2MB in the end (delta: 49.1MB). Peak memory consumption was 213.3MB. Max. memory is 16.0GB. [2022-01-18 22:51:38,228 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 394.3MB. Free memory is still 364.2MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 297.08ms. Allocated memory is still 394.3MB. Free memory was 345.4MB in the beginning and 359.6MB in the end (delta: -14.2MB). Peak memory consumption was 13.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 25.85ms. Allocated memory is still 394.3MB. Free memory was 359.6MB in the beginning and 357.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 13.08ms. Allocated memory is still 394.3MB. Free memory was 357.5MB in the beginning and 356.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 319.71ms. Allocated memory is still 394.3MB. Free memory was 356.0MB in the beginning and 344.0MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 3203.43ms. Allocated memory was 394.3MB in the beginning and 555.7MB in the end (delta: 161.5MB). Free memory was 343.3MB in the beginning and 294.2MB in the end (delta: 49.1MB). Peak memory consumption was 213.3MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 111 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.1s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 403 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 403 mSDsluCounter, 616 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 613 mSDsCounter, 97 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 578 IncrementalHoareTripleChecker+Invalid, 675 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 97 mSolverCounterUnsat, 145 mSDtfsCounter, 578 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 129 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=572occurred in iteration=4, InterpolantAutomatonStates: 107, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 526 NumberOfCodeBlocks, 526 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 517 ConstructedInterpolants, 0 QuantifiedInterpolants, 2221 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-01-18 22:51:38,252 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...