/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-Before.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-ext/45_monabsex1_vs.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bf34d27 [2022-01-19 04:35:23,081 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-19 04:35:23,083 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-19 04:35:23,131 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-19 04:35:23,132 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-19 04:35:23,132 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-19 04:35:23,133 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-19 04:35:23,134 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-19 04:35:23,135 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-19 04:35:23,135 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-19 04:35:23,136 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-19 04:35:23,137 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-19 04:35:23,137 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-19 04:35:23,137 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-19 04:35:23,138 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-19 04:35:23,139 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-19 04:35:23,139 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-19 04:35:23,140 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-19 04:35:23,141 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-19 04:35:23,142 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-19 04:35:23,143 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-19 04:35:23,145 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-19 04:35:23,146 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-19 04:35:23,146 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-19 04:35:23,148 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-19 04:35:23,148 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-19 04:35:23,148 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-19 04:35:23,148 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-19 04:35:23,149 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-19 04:35:23,149 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-19 04:35:23,149 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-19 04:35:23,150 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-19 04:35:23,150 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-19 04:35:23,151 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-19 04:35:23,151 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-19 04:35:23,152 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-19 04:35:23,152 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-19 04:35:23,152 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-19 04:35:23,152 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-19 04:35:23,153 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-19 04:35:23,153 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-19 04:35:23,156 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-Before.epf [2022-01-19 04:35:23,182 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-19 04:35:23,182 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-19 04:35:23,183 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-19 04:35:23,183 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-19 04:35:23,183 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-19 04:35:23,183 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-19 04:35:23,184 INFO L138 SettingsManager]: * Use SBE=true [2022-01-19 04:35:23,184 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-19 04:35:23,184 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-19 04:35:23,184 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-19 04:35:23,184 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-19 04:35:23,184 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-19 04:35:23,184 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-19 04:35:23,184 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-19 04:35:23,184 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-19 04:35:23,184 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-19 04:35:23,184 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-19 04:35:23,184 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-19 04:35:23,185 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-19 04:35:23,185 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-19 04:35:23,185 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-19 04:35:23,185 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-19 04:35:23,185 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-19 04:35:23,185 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 04:35:23,185 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-19 04:35:23,185 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-19 04:35:23,185 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-19 04:35:23,185 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-19 04:35:23,185 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-19 04:35:23,186 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-19 04:35:23,186 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-19 04:35:23,186 INFO L138 SettingsManager]: * When to check the insufficient erros location relative to the other error locations=BEFORE [2022-01-19 04:35:23,186 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-19 04:35:23,344 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-19 04:35:23,363 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-19 04:35:23,364 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-19 04:35:23,365 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-19 04:35:23,366 INFO L275 PluginConnector]: CDTParser initialized [2022-01-19 04:35:23,366 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/45_monabsex1_vs.i [2022-01-19 04:35:23,413 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d415e3cbb/cf46b0661064499383280e89332832fa/FLAG274926e56 [2022-01-19 04:35:23,747 INFO L306 CDTParser]: Found 1 translation units. [2022-01-19 04:35:23,748 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/45_monabsex1_vs.i [2022-01-19 04:35:23,757 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d415e3cbb/cf46b0661064499383280e89332832fa/FLAG274926e56 [2022-01-19 04:35:24,134 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d415e3cbb/cf46b0661064499383280e89332832fa [2022-01-19 04:35:24,135 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-19 04:35:24,136 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-19 04:35:24,139 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-19 04:35:24,139 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-19 04:35:24,141 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-19 04:35:24,141 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 04:35:24" (1/1) ... [2022-01-19 04:35:24,142 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@570f327 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 04:35:24, skipping insertion in model container [2022-01-19 04:35:24,142 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 04:35:24" (1/1) ... [2022-01-19 04:35:24,147 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-19 04:35:24,184 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-19 04:35:24,339 WARN L610 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-01-19 04:35:24,399 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-ext/45_monabsex1_vs.i[30633,30646] [2022-01-19 04:35:24,404 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 04:35:24,409 INFO L203 MainTranslator]: Completed pre-run [2022-01-19 04:35:24,435 WARN L610 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-01-19 04:35:24,449 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-ext/45_monabsex1_vs.i[30633,30646] [2022-01-19 04:35:24,451 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 04:35:24,471 INFO L208 MainTranslator]: Completed translation [2022-01-19 04:35:24,476 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 04:35:24 WrapperNode [2022-01-19 04:35:24,477 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-19 04:35:24,477 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-19 04:35:24,477 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-19 04:35:24,477 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-19 04:35:24,482 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 04:35:24" (1/1) ... [2022-01-19 04:35:24,489 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 04:35:24" (1/1) ... [2022-01-19 04:35:24,500 INFO L137 Inliner]: procedures = 171, calls = 15, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 26 [2022-01-19 04:35:24,500 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-19 04:35:24,501 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-19 04:35:24,501 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-19 04:35:24,501 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-19 04:35:24,505 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 04:35:24" (1/1) ... [2022-01-19 04:35:24,506 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 04:35:24" (1/1) ... [2022-01-19 04:35:24,507 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 04:35:24" (1/1) ... [2022-01-19 04:35:24,507 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 04:35:24" (1/1) ... [2022-01-19 04:35:24,510 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 04:35:24" (1/1) ... [2022-01-19 04:35:24,512 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 04:35:24" (1/1) ... [2022-01-19 04:35:24,512 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 04:35:24" (1/1) ... [2022-01-19 04:35:24,513 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-19 04:35:24,514 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-19 04:35:24,514 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-19 04:35:24,514 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-19 04:35:24,515 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 04:35:24" (1/1) ... [2022-01-19 04:35:24,519 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 04:35:24,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 04:35:24,536 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) [2022-01-19 04:35:24,552 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 [2022-01-19 04:35:24,563 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-01-19 04:35:24,563 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-01-19 04:35:24,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-19 04:35:24,563 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-01-19 04:35:24,563 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-19 04:35:24,563 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-19 04:35:24,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-19 04:35:24,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-19 04:35:24,564 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-19 04:35:24,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-19 04:35:24,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-19 04:35:24,565 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-19 04:35:24,667 INFO L234 CfgBuilder]: Building ICFG [2022-01-19 04:35:24,669 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-19 04:35:24,746 INFO L275 CfgBuilder]: Performing block encoding [2022-01-19 04:35:24,756 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-19 04:35:24,756 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-19 04:35:24,759 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 04:35:24 BoogieIcfgContainer [2022-01-19 04:35:24,759 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-19 04:35:24,760 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-19 04:35:24,760 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-19 04:35:24,763 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-19 04:35:24,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.01 04:35:24" (1/3) ... [2022-01-19 04:35:24,763 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b4e543f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 04:35:24, skipping insertion in model container [2022-01-19 04:35:24,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 04:35:24" (2/3) ... [2022-01-19 04:35:24,764 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b4e543f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 04:35:24, skipping insertion in model container [2022-01-19 04:35:24,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 04:35:24" (3/3) ... [2022-01-19 04:35:24,765 INFO L111 eAbstractionObserver]: Analyzing ICFG 45_monabsex1_vs.i [2022-01-19 04:35:24,768 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-19 04:35:24,768 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-19 04:35:24,768 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-19 04:35:24,786 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:24,786 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:24,786 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:24,786 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:24,787 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:24,787 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:24,787 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:24,787 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:24,787 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:24,788 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:24,788 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:24,788 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:24,788 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:24,788 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:24,788 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:24,789 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:24,789 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:24,789 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:24,789 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:24,789 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:24,789 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:24,789 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:24,790 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:24,790 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:24,790 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:24,790 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:24,790 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:24,790 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:24,792 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:24,793 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:24,793 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:24,793 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:24,793 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:24,794 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:24,795 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-01-19 04:35:24,826 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-19 04:35:24,831 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 [2022-01-19 04:35:24,831 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-19 04:35:24,837 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 44 places, 42 transitions, 89 flow [2022-01-19 04:35:24,871 INFO L129 PetriNetUnfolder]: 2/53 cut-off events. [2022-01-19 04:35:24,871 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-01-19 04:35:24,873 INFO L84 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 53 events. 2/53 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 55 event pairs, 0 based on Foata normal form. 0/48 useless extension candidates. Maximal degree in co-relation 28. Up to 4 conditions per place. [2022-01-19 04:35:24,873 INFO L82 GeneralOperation]: Start removeDead. Operand has 44 places, 42 transitions, 89 flow [2022-01-19 04:35:24,876 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 44 places, 42 transitions, 89 flow [2022-01-19 04:35:24,894 INFO L129 PetriNetUnfolder]: 2/49 cut-off events. [2022-01-19 04:35:24,894 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-01-19 04:35:24,895 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:35:24,895 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] [2022-01-19 04:35:24,896 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-19 04:35:24,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:35:24,901 INFO L85 PathProgramCache]: Analyzing trace with hash -717287360, now seen corresponding path program 1 times [2022-01-19 04:35:24,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:35:24,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586083074] [2022-01-19 04:35:24,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:35:24,908 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:35:25,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 04:35:25,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 04:35:25,090 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 04:35:25,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586083074] [2022-01-19 04:35:25,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586083074] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 04:35:25,091 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 04:35:25,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-19 04:35:25,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227488698] [2022-01-19 04:35:25,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 04:35:25,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 04:35:25,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 04:35:25,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 04:35:25,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 04:35:25,123 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 42 [2022-01-19 04:35:25,126 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 42 transitions, 89 flow. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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) [2022-01-19 04:35:25,126 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 04:35:25,126 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 42 [2022-01-19 04:35:25,127 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 04:35:25,148 INFO L129 PetriNetUnfolder]: 0/38 cut-off events. [2022-01-19 04:35:25,148 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-01-19 04:35:25,148 INFO L84 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 38 events. 0/38 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 13 event pairs, 0 based on Foata normal form. 6/44 useless extension candidates. Maximal degree in co-relation 0. Up to 6 conditions per place. [2022-01-19 04:35:25,149 INFO L132 encePairwiseOnDemand]: 38/42 looper letters, 0 selfloop transitions, 0 changer transitions 34/34 dead transitions. [2022-01-19 04:35:25,149 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 34 transitions, 87 flow [2022-01-19 04:35:25,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 04:35:25,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 04:35:25,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 108 transitions. [2022-01-19 04:35:25,159 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8571428571428571 [2022-01-19 04:35:25,160 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 108 transitions. [2022-01-19 04:35:25,160 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 108 transitions. [2022-01-19 04:35:25,161 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 04:35:25,163 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 108 transitions. [2022-01-19 04:35:25,165 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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) [2022-01-19 04:35:25,169 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 42.0) internal successors, (168), 4 states have internal predecessors, (168), 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) [2022-01-19 04:35:25,169 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 42.0) internal successors, (168), 4 states have internal predecessors, (168), 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) [2022-01-19 04:35:25,171 INFO L186 Difference]: Start difference. First operand has 44 places, 42 transitions, 89 flow. Second operand 3 states and 108 transitions. [2022-01-19 04:35:25,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 34 transitions, 87 flow [2022-01-19 04:35:25,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 34 transitions, 87 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-01-19 04:35:25,176 INFO L242 Difference]: Finished difference. Result has 39 places, 0 transitions, 0 flow [2022-01-19 04:35:25,179 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=73, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=39, PETRI_TRANSITIONS=0} [2022-01-19 04:35:25,185 INFO L334 CegarLoopForPetriNet]: 44 programPoint places, -5 predicate places. [2022-01-19 04:35:25,185 INFO L470 AbstractCegarLoop]: Abstraction has has 39 places, 0 transitions, 0 flow [2022-01-19 04:35:25,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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) [2022-01-19 04:35:25,187 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-01-19 04:35:25,187 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-01-19 04:35:25,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-19 04:35:25,191 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2022-01-19 04:35:25,192 INFO L309 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE (1/2) [2022-01-19 04:35:25,202 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2022-01-19 04:35:25,204 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 [2022-01-19 04:35:25,204 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-19 04:35:25,207 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 44 places, 42 transitions, 89 flow [2022-01-19 04:35:25,216 INFO L129 PetriNetUnfolder]: 2/53 cut-off events. [2022-01-19 04:35:25,217 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-01-19 04:35:25,217 INFO L84 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 53 events. 2/53 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 55 event pairs, 0 based on Foata normal form. 0/48 useless extension candidates. Maximal degree in co-relation 28. Up to 4 conditions per place. [2022-01-19 04:35:25,218 INFO L82 GeneralOperation]: Start removeDead. Operand has 44 places, 42 transitions, 89 flow [2022-01-19 04:35:25,219 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 38 places, 35 transitions, 75 flow [2022-01-19 04:35:25,227 INFO L129 PetriNetUnfolder]: 0/34 cut-off events. [2022-01-19 04:35:25,227 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-01-19 04:35:25,228 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:35:25,228 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 04:35:25,228 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0INUSE_VIOLATION] === [2022-01-19 04:35:25,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:35:25,229 INFO L85 PathProgramCache]: Analyzing trace with hash 527068737, now seen corresponding path program 1 times [2022-01-19 04:35:25,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:35:25,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179002239] [2022-01-19 04:35:25,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:35:25,230 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:35:25,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-19 04:35:25,265 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-19 04:35:25,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-19 04:35:25,287 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-01-19 04:35:25,287 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-19 04:35:25,287 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION (0 of 1 remaining) [2022-01-19 04:35:25,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-19 04:35:25,288 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2022-01-19 04:35:25,289 INFO L309 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2022-01-19 04:35:25,289 WARN L235 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-01-19 04:35:25,289 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-01-19 04:35:25,304 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,305 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,305 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,305 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,305 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,305 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,306 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,306 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,306 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,307 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,307 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,307 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,307 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,307 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,307 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,308 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,308 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,308 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,308 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,308 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,308 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,308 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,309 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,309 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,309 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,309 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,309 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,309 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,310 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,311 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,311 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,311 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,312 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,312 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,312 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,312 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,312 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,313 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,313 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,313 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,314 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,314 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,314 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,314 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,314 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,314 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,314 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,314 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,314 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,314 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,315 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,315 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,315 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,315 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,315 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,315 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,316 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,316 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,316 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,316 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,316 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,316 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,317 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,317 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,317 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,317 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,317 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,318 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,318 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-01-19 04:35:25,320 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-19 04:35:25,323 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 [2022-01-19 04:35:25,323 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-19 04:35:25,326 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 57 places, 53 transitions, 118 flow [2022-01-19 04:35:25,340 INFO L129 PetriNetUnfolder]: 3/77 cut-off events. [2022-01-19 04:35:25,340 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-01-19 04:35:25,341 INFO L84 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 77 events. 3/77 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 108 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 54. Up to 6 conditions per place. [2022-01-19 04:35:25,341 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 53 transitions, 118 flow [2022-01-19 04:35:25,341 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 53 transitions, 118 flow [2022-01-19 04:35:25,344 INFO L129 PetriNetUnfolder]: 2/47 cut-off events. [2022-01-19 04:35:25,344 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-01-19 04:35:25,345 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:35:25,345 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] [2022-01-19 04:35:25,345 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-19 04:35:25,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:35:25,345 INFO L85 PathProgramCache]: Analyzing trace with hash -297621323, now seen corresponding path program 1 times [2022-01-19 04:35:25,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:35:25,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782072298] [2022-01-19 04:35:25,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:35:25,346 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:35:25,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 04:35:25,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 04:35:25,406 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 04:35:25,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782072298] [2022-01-19 04:35:25,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782072298] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 04:35:25,406 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 04:35:25,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-19 04:35:25,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925146466] [2022-01-19 04:35:25,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 04:35:25,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 04:35:25,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 04:35:25,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 04:35:25,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 04:35:25,408 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 53 [2022-01-19 04:35:25,408 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 53 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 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) [2022-01-19 04:35:25,408 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 04:35:25,408 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 53 [2022-01-19 04:35:25,408 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 04:35:25,452 INFO L129 PetriNetUnfolder]: 19/117 cut-off events. [2022-01-19 04:35:25,452 INFO L130 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2022-01-19 04:35:25,452 INFO L84 FinitePrefix]: Finished finitePrefix Result has 195 conditions, 117 events. 19/117 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 352 event pairs, 10 based on Foata normal form. 35/137 useless extension candidates. Maximal degree in co-relation 119. Up to 37 conditions per place. [2022-01-19 04:35:25,453 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 13 selfloop transitions, 3 changer transitions 1/51 dead transitions. [2022-01-19 04:35:25,453 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 51 transitions, 153 flow [2022-01-19 04:35:25,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 04:35:25,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 04:35:25,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 139 transitions. [2022-01-19 04:35:25,458 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8742138364779874 [2022-01-19 04:35:25,458 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 139 transitions. [2022-01-19 04:35:25,458 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 139 transitions. [2022-01-19 04:35:25,460 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 04:35:25,460 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 139 transitions. [2022-01-19 04:35:25,461 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 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) [2022-01-19 04:35:25,462 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 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) [2022-01-19 04:35:25,462 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 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) [2022-01-19 04:35:25,462 INFO L186 Difference]: Start difference. First operand has 57 places, 53 transitions, 118 flow. Second operand 3 states and 139 transitions. [2022-01-19 04:35:25,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 51 transitions, 153 flow [2022-01-19 04:35:25,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 51 transitions, 151 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-01-19 04:35:25,465 INFO L242 Difference]: Finished difference. Result has 55 places, 48 transitions, 124 flow [2022-01-19 04:35:25,465 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=55, PETRI_TRANSITIONS=48} [2022-01-19 04:35:25,466 INFO L334 CegarLoopForPetriNet]: 57 programPoint places, -2 predicate places. [2022-01-19 04:35:25,467 INFO L470 AbstractCegarLoop]: Abstraction has has 55 places, 48 transitions, 124 flow [2022-01-19 04:35:25,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 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) [2022-01-19 04:35:25,467 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:35:25,467 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 04:35:25,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-19 04:35:25,467 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-19 04:35:25,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:35:25,468 INFO L85 PathProgramCache]: Analyzing trace with hash 671782985, now seen corresponding path program 1 times [2022-01-19 04:35:25,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:35:25,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491041381] [2022-01-19 04:35:25,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:35:25,468 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:35:25,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 04:35:25,520 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-19 04:35:25,520 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 04:35:25,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491041381] [2022-01-19 04:35:25,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491041381] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 04:35:25,521 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 04:35:25,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-19 04:35:25,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512722355] [2022-01-19 04:35:25,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 04:35:25,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 04:35:25,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 04:35:25,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 04:35:25,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 04:35:25,523 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 53 [2022-01-19 04:35:25,523 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 48 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 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) [2022-01-19 04:35:25,523 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 04:35:25,523 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 53 [2022-01-19 04:35:25,523 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 04:35:25,560 INFO L129 PetriNetUnfolder]: 11/106 cut-off events. [2022-01-19 04:35:25,560 INFO L130 PetriNetUnfolder]: For 33/33 co-relation queries the response was YES. [2022-01-19 04:35:25,561 INFO L84 FinitePrefix]: Finished finitePrefix Result has 197 conditions, 106 events. 11/106 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 304 event pairs, 9 based on Foata normal form. 0/104 useless extension candidates. Maximal degree in co-relation 134. Up to 28 conditions per place. [2022-01-19 04:35:25,561 INFO L132 encePairwiseOnDemand]: 49/53 looper letters, 11 selfloop transitions, 3 changer transitions 3/51 dead transitions. [2022-01-19 04:35:25,561 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 51 transitions, 170 flow [2022-01-19 04:35:25,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 04:35:25,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 04:35:25,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 133 transitions. [2022-01-19 04:35:25,568 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8364779874213837 [2022-01-19 04:35:25,568 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 133 transitions. [2022-01-19 04:35:25,568 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 133 transitions. [2022-01-19 04:35:25,568 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 04:35:25,568 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 133 transitions. [2022-01-19 04:35:25,569 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 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) [2022-01-19 04:35:25,569 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 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) [2022-01-19 04:35:25,569 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 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) [2022-01-19 04:35:25,570 INFO L186 Difference]: Start difference. First operand has 55 places, 48 transitions, 124 flow. Second operand 3 states and 133 transitions. [2022-01-19 04:35:25,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 51 transitions, 170 flow [2022-01-19 04:35:25,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 51 transitions, 162 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-01-19 04:35:25,571 INFO L242 Difference]: Finished difference. Result has 57 places, 48 transitions, 136 flow [2022-01-19 04:35:25,571 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=136, PETRI_PLACES=57, PETRI_TRANSITIONS=48} [2022-01-19 04:35:25,572 INFO L334 CegarLoopForPetriNet]: 57 programPoint places, 0 predicate places. [2022-01-19 04:35:25,572 INFO L470 AbstractCegarLoop]: Abstraction has has 57 places, 48 transitions, 136 flow [2022-01-19 04:35:25,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 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) [2022-01-19 04:35:25,572 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:35:25,572 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 04:35:25,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-19 04:35:25,572 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-19 04:35:25,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:35:25,573 INFO L85 PathProgramCache]: Analyzing trace with hash 2098651286, now seen corresponding path program 1 times [2022-01-19 04:35:25,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:35:25,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429074615] [2022-01-19 04:35:25,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:35:25,573 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:35:25,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 04:35:25,621 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-19 04:35:25,621 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 04:35:25,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429074615] [2022-01-19 04:35:25,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429074615] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 04:35:25,621 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 04:35:25,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 04:35:25,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145689461] [2022-01-19 04:35:25,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 04:35:25,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 04:35:25,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 04:35:25,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 04:35:25,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-19 04:35:25,623 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 53 [2022-01-19 04:35:25,623 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 48 transitions, 136 flow. Second operand has 5 states, 5 states have (on average 39.2) internal successors, (196), 5 states have internal predecessors, (196), 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) [2022-01-19 04:35:25,623 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 04:35:25,623 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 53 [2022-01-19 04:35:25,623 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 04:35:25,716 INFO L129 PetriNetUnfolder]: 18/145 cut-off events. [2022-01-19 04:35:25,717 INFO L130 PetriNetUnfolder]: For 68/68 co-relation queries the response was YES. [2022-01-19 04:35:25,718 INFO L84 FinitePrefix]: Finished finitePrefix Result has 319 conditions, 145 events. 18/145 cut-off events. For 68/68 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 537 event pairs, 6 based on Foata normal form. 4/147 useless extension candidates. Maximal degree in co-relation 240. Up to 21 conditions per place. [2022-01-19 04:35:25,720 INFO L132 encePairwiseOnDemand]: 46/53 looper letters, 14 selfloop transitions, 6 changer transitions 11/63 dead transitions. [2022-01-19 04:35:25,722 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 63 transitions, 273 flow [2022-01-19 04:35:25,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 04:35:25,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 04:35:25,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 290 transitions. [2022-01-19 04:35:25,725 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7816711590296496 [2022-01-19 04:35:25,725 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 290 transitions. [2022-01-19 04:35:25,725 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 290 transitions. [2022-01-19 04:35:25,725 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 04:35:25,725 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 290 transitions. [2022-01-19 04:35:25,726 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 41.42857142857143) internal successors, (290), 7 states have internal predecessors, (290), 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) [2022-01-19 04:35:25,727 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 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) [2022-01-19 04:35:25,727 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 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) [2022-01-19 04:35:25,727 INFO L186 Difference]: Start difference. First operand has 57 places, 48 transitions, 136 flow. Second operand 7 states and 290 transitions. [2022-01-19 04:35:25,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 63 transitions, 273 flow [2022-01-19 04:35:25,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 63 transitions, 259 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-01-19 04:35:25,729 INFO L242 Difference]: Finished difference. Result has 64 places, 50 transitions, 164 flow [2022-01-19 04:35:25,729 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=164, PETRI_PLACES=64, PETRI_TRANSITIONS=50} [2022-01-19 04:35:25,730 INFO L334 CegarLoopForPetriNet]: 57 programPoint places, 7 predicate places. [2022-01-19 04:35:25,730 INFO L470 AbstractCegarLoop]: Abstraction has has 64 places, 50 transitions, 164 flow [2022-01-19 04:35:25,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.2) internal successors, (196), 5 states have internal predecessors, (196), 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) [2022-01-19 04:35:25,730 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:35:25,730 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 04:35:25,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-19 04:35:25,731 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-19 04:35:25,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:35:25,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1791222288, now seen corresponding path program 2 times [2022-01-19 04:35:25,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:35:25,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980800327] [2022-01-19 04:35:25,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:35:25,731 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:35:25,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 04:35:25,778 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-19 04:35:25,779 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 04:35:25,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980800327] [2022-01-19 04:35:25,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980800327] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 04:35:25,779 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 04:35:25,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 04:35:25,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763241499] [2022-01-19 04:35:25,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 04:35:25,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 04:35:25,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 04:35:25,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 04:35:25,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-19 04:35:25,780 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 53 [2022-01-19 04:35:25,781 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 50 transitions, 164 flow. Second operand has 5 states, 5 states have (on average 39.2) internal successors, (196), 5 states have internal predecessors, (196), 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) [2022-01-19 04:35:25,781 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 04:35:25,781 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 53 [2022-01-19 04:35:25,781 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 04:35:25,861 INFO L129 PetriNetUnfolder]: 13/110 cut-off events. [2022-01-19 04:35:25,862 INFO L130 PetriNetUnfolder]: For 70/70 co-relation queries the response was YES. [2022-01-19 04:35:25,862 INFO L84 FinitePrefix]: Finished finitePrefix Result has 247 conditions, 110 events. 13/110 cut-off events. For 70/70 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 302 event pairs, 5 based on Foata normal form. 4/113 useless extension candidates. Maximal degree in co-relation 237. Up to 20 conditions per place. [2022-01-19 04:35:25,862 INFO L132 encePairwiseOnDemand]: 47/53 looper letters, 0 selfloop transitions, 0 changer transitions 56/56 dead transitions. [2022-01-19 04:35:25,862 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 56 transitions, 241 flow [2022-01-19 04:35:25,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-19 04:35:25,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-01-19 04:35:25,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 248 transitions. [2022-01-19 04:35:25,863 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.779874213836478 [2022-01-19 04:35:25,863 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 248 transitions. [2022-01-19 04:35:25,863 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 248 transitions. [2022-01-19 04:35:25,864 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 04:35:25,864 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 248 transitions. [2022-01-19 04:35:25,864 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 41.333333333333336) internal successors, (248), 6 states have internal predecessors, (248), 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) [2022-01-19 04:35:25,865 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 53.0) internal successors, (371), 7 states have internal predecessors, (371), 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) [2022-01-19 04:35:25,865 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 53.0) internal successors, (371), 7 states have internal predecessors, (371), 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) [2022-01-19 04:35:25,865 INFO L186 Difference]: Start difference. First operand has 64 places, 50 transitions, 164 flow. Second operand 6 states and 248 transitions. [2022-01-19 04:35:25,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 56 transitions, 241 flow [2022-01-19 04:35:25,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 56 transitions, 231 flow, removed 5 selfloop flow, removed 1 redundant places. [2022-01-19 04:35:25,867 INFO L242 Difference]: Finished difference. Result has 64 places, 0 transitions, 0 flow [2022-01-19 04:35:25,867 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=64, PETRI_TRANSITIONS=0} [2022-01-19 04:35:25,868 INFO L334 CegarLoopForPetriNet]: 57 programPoint places, 7 predicate places. [2022-01-19 04:35:25,868 INFO L470 AbstractCegarLoop]: Abstraction has has 64 places, 0 transitions, 0 flow [2022-01-19 04:35:25,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.2) internal successors, (196), 5 states have internal predecessors, (196), 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) [2022-01-19 04:35:25,868 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-01-19 04:35:25,868 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2022-01-19 04:35:25,868 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2022-01-19 04:35:25,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-19 04:35:25,869 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2022-01-19 04:35:25,869 INFO L309 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE (1/2) [2022-01-19 04:35:25,870 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2022-01-19 04:35:25,870 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 [2022-01-19 04:35:25,870 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-19 04:35:25,871 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 57 places, 53 transitions, 118 flow [2022-01-19 04:35:25,878 INFO L129 PetriNetUnfolder]: 3/77 cut-off events. [2022-01-19 04:35:25,878 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-01-19 04:35:25,879 INFO L84 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 77 events. 3/77 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 108 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 54. Up to 6 conditions per place. [2022-01-19 04:35:25,879 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 53 transitions, 118 flow [2022-01-19 04:35:25,879 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 51 places, 46 transitions, 104 flow [2022-01-19 04:35:25,883 INFO L129 PetriNetUnfolder]: 0/53 cut-off events. [2022-01-19 04:35:25,883 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-01-19 04:35:25,884 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:35:25,884 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 04:35:25,884 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0INUSE_VIOLATION] === [2022-01-19 04:35:25,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:35:25,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1916139092, now seen corresponding path program 1 times [2022-01-19 04:35:25,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:35:25,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489227966] [2022-01-19 04:35:25,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:35:25,885 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:35:25,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-19 04:35:25,904 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-19 04:35:25,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-19 04:35:25,914 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-01-19 04:35:25,914 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-19 04:35:25,914 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION (0 of 1 remaining) [2022-01-19 04:35:25,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-19 04:35:25,914 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2022-01-19 04:35:25,914 INFO L309 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2022-01-19 04:35:25,914 WARN L235 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-01-19 04:35:25,915 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-01-19 04:35:25,927 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,927 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,927 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,928 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,928 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,928 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,928 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,928 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,928 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,928 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,929 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,929 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,929 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,929 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,929 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,929 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,929 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,929 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,929 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,929 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,930 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,930 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,930 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,930 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,930 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,930 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,930 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,930 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,931 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,931 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,931 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,931 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,931 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,931 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,931 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,931 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,931 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,931 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,932 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,932 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,932 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,932 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,933 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,933 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,933 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,933 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,933 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,933 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,934 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,934 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,934 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,934 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,934 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,934 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,934 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,934 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,935 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,935 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,935 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,935 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,935 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,935 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,935 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,935 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,936 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,937 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,939 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,940 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,940 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,940 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,940 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,940 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,940 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,940 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,940 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,940 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,940 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,940 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,941 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,941 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,941 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,941 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,942 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,942 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,942 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,942 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,942 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,942 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,942 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,942 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,943 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,943 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,943 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,944 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,944 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,944 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,945 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,945 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,945 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,945 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,945 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,946 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:25,947 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-01-19 04:35:25,949 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-19 04:35:25,953 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 [2022-01-19 04:35:25,954 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-01-19 04:35:25,955 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 70 places, 64 transitions, 149 flow [2022-01-19 04:35:25,964 INFO L129 PetriNetUnfolder]: 4/101 cut-off events. [2022-01-19 04:35:25,964 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-01-19 04:35:25,964 INFO L84 FinitePrefix]: Finished finitePrefix Result has 117 conditions, 101 events. 4/101 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 161 event pairs, 0 based on Foata normal form. 0/90 useless extension candidates. Maximal degree in co-relation 81. Up to 8 conditions per place. [2022-01-19 04:35:25,964 INFO L82 GeneralOperation]: Start removeDead. Operand has 70 places, 64 transitions, 149 flow [2022-01-19 04:35:25,965 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 70 places, 64 transitions, 149 flow [2022-01-19 04:35:25,967 INFO L129 PetriNetUnfolder]: 2/47 cut-off events. [2022-01-19 04:35:25,967 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-01-19 04:35:25,967 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:35:25,967 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] [2022-01-19 04:35:25,968 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-19 04:35:25,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:35:25,968 INFO L85 PathProgramCache]: Analyzing trace with hash 833747371, now seen corresponding path program 1 times [2022-01-19 04:35:25,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:35:25,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772011785] [2022-01-19 04:35:25,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:35:25,969 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:35:25,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 04:35:26,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 04:35:26,001 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 04:35:26,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772011785] [2022-01-19 04:35:26,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772011785] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 04:35:26,001 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 04:35:26,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-19 04:35:26,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396868565] [2022-01-19 04:35:26,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 04:35:26,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 04:35:26,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 04:35:26,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 04:35:26,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 04:35:26,002 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 64 [2022-01-19 04:35:26,003 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 64 transitions, 149 flow. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 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) [2022-01-19 04:35:26,003 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 04:35:26,003 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 64 [2022-01-19 04:35:26,003 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 04:35:26,079 INFO L129 PetriNetUnfolder]: 203/539 cut-off events. [2022-01-19 04:35:26,079 INFO L130 PetriNetUnfolder]: For 193/193 co-relation queries the response was YES. [2022-01-19 04:35:26,082 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1044 conditions, 539 events. 203/539 cut-off events. For 193/193 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 3172 event pairs, 124 based on Foata normal form. 160/601 useless extension candidates. Maximal degree in co-relation 680. Up to 259 conditions per place. [2022-01-19 04:35:26,084 INFO L132 encePairwiseOnDemand]: 57/64 looper letters, 21 selfloop transitions, 4 changer transitions 0/66 dead transitions. [2022-01-19 04:35:26,084 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 66 transitions, 215 flow [2022-01-19 04:35:26,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 04:35:26,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 04:35:26,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 168 transitions. [2022-01-19 04:35:26,085 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.875 [2022-01-19 04:35:26,085 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 168 transitions. [2022-01-19 04:35:26,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 168 transitions. [2022-01-19 04:35:26,086 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 04:35:26,086 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 168 transitions. [2022-01-19 04:35:26,086 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 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) [2022-01-19 04:35:26,087 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 64.0) internal successors, (256), 4 states have internal predecessors, (256), 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) [2022-01-19 04:35:26,087 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 64.0) internal successors, (256), 4 states have internal predecessors, (256), 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) [2022-01-19 04:35:26,088 INFO L186 Difference]: Start difference. First operand has 70 places, 64 transitions, 149 flow. Second operand 3 states and 168 transitions. [2022-01-19 04:35:26,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 66 transitions, 215 flow [2022-01-19 04:35:26,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 66 transitions, 207 flow, removed 4 selfloop flow, removed 0 redundant places. [2022-01-19 04:35:26,090 INFO L242 Difference]: Finished difference. Result has 68 places, 60 transitions, 159 flow [2022-01-19 04:35:26,091 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=159, PETRI_PLACES=68, PETRI_TRANSITIONS=60} [2022-01-19 04:35:26,091 INFO L334 CegarLoopForPetriNet]: 70 programPoint places, -2 predicate places. [2022-01-19 04:35:26,091 INFO L470 AbstractCegarLoop]: Abstraction has has 68 places, 60 transitions, 159 flow [2022-01-19 04:35:26,092 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 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) [2022-01-19 04:35:26,092 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:35:26,092 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 04:35:26,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-19 04:35:26,092 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-19 04:35:26,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:35:26,093 INFO L85 PathProgramCache]: Analyzing trace with hash 681039901, now seen corresponding path program 1 times [2022-01-19 04:35:26,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:35:26,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573463061] [2022-01-19 04:35:26,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:35:26,094 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:35:26,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 04:35:26,129 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-19 04:35:26,130 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 04:35:26,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573463061] [2022-01-19 04:35:26,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573463061] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 04:35:26,130 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 04:35:26,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-19 04:35:26,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3071308] [2022-01-19 04:35:26,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 04:35:26,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 04:35:26,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 04:35:26,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 04:35:26,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 04:35:26,132 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 64 [2022-01-19 04:35:26,132 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 60 transitions, 159 flow. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 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) [2022-01-19 04:35:26,132 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 04:35:26,132 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 64 [2022-01-19 04:35:26,132 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 04:35:26,208 INFO L129 PetriNetUnfolder]: 222/629 cut-off events. [2022-01-19 04:35:26,208 INFO L130 PetriNetUnfolder]: For 339/339 co-relation queries the response was YES. [2022-01-19 04:35:26,210 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1411 conditions, 629 events. 222/629 cut-off events. For 339/339 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3941 event pairs, 113 based on Foata normal form. 0/556 useless extension candidates. Maximal degree in co-relation 1347. Up to 292 conditions per place. [2022-01-19 04:35:26,213 INFO L132 encePairwiseOnDemand]: 59/64 looper letters, 23 selfloop transitions, 6 changer transitions 0/70 dead transitions. [2022-01-19 04:35:26,213 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 70 transitions, 260 flow [2022-01-19 04:35:26,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 04:35:26,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 04:35:26,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 163 transitions. [2022-01-19 04:35:26,214 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8489583333333334 [2022-01-19 04:35:26,214 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 163 transitions. [2022-01-19 04:35:26,214 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 163 transitions. [2022-01-19 04:35:26,214 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 04:35:26,214 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 163 transitions. [2022-01-19 04:35:26,214 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 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) [2022-01-19 04:35:26,215 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 64.0) internal successors, (256), 4 states have internal predecessors, (256), 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) [2022-01-19 04:35:26,215 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 64.0) internal successors, (256), 4 states have internal predecessors, (256), 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) [2022-01-19 04:35:26,215 INFO L186 Difference]: Start difference. First operand has 68 places, 60 transitions, 159 flow. Second operand 3 states and 163 transitions. [2022-01-19 04:35:26,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 70 transitions, 260 flow [2022-01-19 04:35:26,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 70 transitions, 246 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-01-19 04:35:26,220 INFO L242 Difference]: Finished difference. Result has 70 places, 64 transitions, 199 flow [2022-01-19 04:35:26,220 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=199, PETRI_PLACES=70, PETRI_TRANSITIONS=64} [2022-01-19 04:35:26,221 INFO L334 CegarLoopForPetriNet]: 70 programPoint places, 0 predicate places. [2022-01-19 04:35:26,222 INFO L470 AbstractCegarLoop]: Abstraction has has 70 places, 64 transitions, 199 flow [2022-01-19 04:35:26,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 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) [2022-01-19 04:35:26,222 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:35:26,222 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 04:35:26,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-19 04:35:26,222 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-19 04:35:26,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:35:26,222 INFO L85 PathProgramCache]: Analyzing trace with hash -932714154, now seen corresponding path program 1 times [2022-01-19 04:35:26,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:35:26,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688754576] [2022-01-19 04:35:26,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:35:26,223 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:35:26,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 04:35:26,266 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-19 04:35:26,266 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 04:35:26,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688754576] [2022-01-19 04:35:26,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688754576] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 04:35:26,268 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 04:35:26,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 04:35:26,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548115770] [2022-01-19 04:35:26,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 04:35:26,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 04:35:26,270 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 04:35:26,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 04:35:26,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-19 04:35:26,271 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 64 [2022-01-19 04:35:26,272 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 64 transitions, 199 flow. Second operand has 5 states, 5 states have (on average 46.2) internal successors, (231), 5 states have internal predecessors, (231), 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) [2022-01-19 04:35:26,272 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 04:35:26,272 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 64 [2022-01-19 04:35:26,272 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 04:35:26,462 INFO L129 PetriNetUnfolder]: 464/1205 cut-off events. [2022-01-19 04:35:26,462 INFO L130 PetriNetUnfolder]: For 794/794 co-relation queries the response was YES. [2022-01-19 04:35:26,465 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3084 conditions, 1205 events. 464/1205 cut-off events. For 794/794 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 8695 event pairs, 91 based on Foata normal form. 10/1068 useless extension candidates. Maximal degree in co-relation 3004. Up to 282 conditions per place. [2022-01-19 04:35:26,469 INFO L132 encePairwiseOnDemand]: 55/64 looper letters, 50 selfloop transitions, 23 changer transitions 0/112 dead transitions. [2022-01-19 04:35:26,469 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 112 transitions, 573 flow [2022-01-19 04:35:26,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 04:35:26,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 04:35:26,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 371 transitions. [2022-01-19 04:35:26,471 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.828125 [2022-01-19 04:35:26,471 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 371 transitions. [2022-01-19 04:35:26,471 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 371 transitions. [2022-01-19 04:35:26,471 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 04:35:26,471 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 371 transitions. [2022-01-19 04:35:26,472 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 53.0) internal successors, (371), 7 states have internal predecessors, (371), 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) [2022-01-19 04:35:26,473 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 64.0) internal successors, (512), 8 states have internal predecessors, (512), 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) [2022-01-19 04:35:26,473 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 64.0) internal successors, (512), 8 states have internal predecessors, (512), 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) [2022-01-19 04:35:26,473 INFO L186 Difference]: Start difference. First operand has 70 places, 64 transitions, 199 flow. Second operand 7 states and 371 transitions. [2022-01-19 04:35:26,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 112 transitions, 573 flow [2022-01-19 04:35:26,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 112 transitions, 541 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-01-19 04:35:26,477 INFO L242 Difference]: Finished difference. Result has 78 places, 83 transitions, 387 flow [2022-01-19 04:35:26,477 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=387, PETRI_PLACES=78, PETRI_TRANSITIONS=83} [2022-01-19 04:35:26,478 INFO L334 CegarLoopForPetriNet]: 70 programPoint places, 8 predicate places. [2022-01-19 04:35:26,478 INFO L470 AbstractCegarLoop]: Abstraction has has 78 places, 83 transitions, 387 flow [2022-01-19 04:35:26,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 46.2) internal successors, (231), 5 states have internal predecessors, (231), 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) [2022-01-19 04:35:26,478 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:35:26,479 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 04:35:26,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-19 04:35:26,479 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-19 04:35:26,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:35:26,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1486133546, now seen corresponding path program 2 times [2022-01-19 04:35:26,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:35:26,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903999226] [2022-01-19 04:35:26,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:35:26,479 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:35:26,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 04:35:26,539 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-19 04:35:26,540 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 04:35:26,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903999226] [2022-01-19 04:35:26,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903999226] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 04:35:26,540 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 04:35:26,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 04:35:26,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004923289] [2022-01-19 04:35:26,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 04:35:26,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 04:35:26,540 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 04:35:26,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 04:35:26,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-19 04:35:26,542 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 64 [2022-01-19 04:35:26,542 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 83 transitions, 387 flow. Second operand has 5 states, 5 states have (on average 46.2) internal successors, (231), 5 states have internal predecessors, (231), 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) [2022-01-19 04:35:26,542 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 04:35:26,542 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 64 [2022-01-19 04:35:26,542 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 04:35:26,727 INFO L129 PetriNetUnfolder]: 441/1220 cut-off events. [2022-01-19 04:35:26,727 INFO L130 PetriNetUnfolder]: For 1541/1541 co-relation queries the response was YES. [2022-01-19 04:35:26,730 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3624 conditions, 1220 events. 441/1220 cut-off events. For 1541/1541 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 9154 event pairs, 114 based on Foata normal form. 20/1129 useless extension candidates. Maximal degree in co-relation 3538. Up to 241 conditions per place. [2022-01-19 04:35:26,735 INFO L132 encePairwiseOnDemand]: 55/64 looper letters, 52 selfloop transitions, 26 changer transitions 0/117 dead transitions. [2022-01-19 04:35:26,735 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 117 transitions, 734 flow [2022-01-19 04:35:26,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-19 04:35:26,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-01-19 04:35:26,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 322 transitions. [2022-01-19 04:35:26,736 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8385416666666666 [2022-01-19 04:35:26,736 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 322 transitions. [2022-01-19 04:35:26,736 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 322 transitions. [2022-01-19 04:35:26,736 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 04:35:26,736 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 322 transitions. [2022-01-19 04:35:26,737 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 53.666666666666664) internal successors, (322), 6 states have internal predecessors, (322), 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) [2022-01-19 04:35:26,738 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 64.0) internal successors, (448), 7 states have internal predecessors, (448), 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) [2022-01-19 04:35:26,738 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 64.0) internal successors, (448), 7 states have internal predecessors, (448), 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) [2022-01-19 04:35:26,738 INFO L186 Difference]: Start difference. First operand has 78 places, 83 transitions, 387 flow. Second operand 6 states and 322 transitions. [2022-01-19 04:35:26,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 117 transitions, 734 flow [2022-01-19 04:35:26,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 117 transitions, 732 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-01-19 04:35:26,743 INFO L242 Difference]: Finished difference. Result has 87 places, 92 transitions, 574 flow [2022-01-19 04:35:26,743 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=385, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=574, PETRI_PLACES=87, PETRI_TRANSITIONS=92} [2022-01-19 04:35:26,743 INFO L334 CegarLoopForPetriNet]: 70 programPoint places, 17 predicate places. [2022-01-19 04:35:26,743 INFO L470 AbstractCegarLoop]: Abstraction has has 87 places, 92 transitions, 574 flow [2022-01-19 04:35:26,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 46.2) internal successors, (231), 5 states have internal predecessors, (231), 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) [2022-01-19 04:35:26,744 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:35:26,744 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 04:35:26,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-19 04:35:26,744 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-19 04:35:26,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:35:26,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1713076928, now seen corresponding path program 1 times [2022-01-19 04:35:26,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:35:26,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645062514] [2022-01-19 04:35:26,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:35:26,744 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:35:26,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 04:35:26,767 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-01-19 04:35:26,767 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 04:35:26,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645062514] [2022-01-19 04:35:26,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645062514] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 04:35:26,767 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 04:35:26,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-19 04:35:26,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056030957] [2022-01-19 04:35:26,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 04:35:26,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 04:35:26,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 04:35:26,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 04:35:26,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 04:35:26,768 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 64 [2022-01-19 04:35:26,768 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 92 transitions, 574 flow. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 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) [2022-01-19 04:35:26,769 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 04:35:26,769 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 64 [2022-01-19 04:35:26,769 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 04:35:26,880 INFO L129 PetriNetUnfolder]: 338/1235 cut-off events. [2022-01-19 04:35:26,880 INFO L130 PetriNetUnfolder]: For 3067/3252 co-relation queries the response was YES. [2022-01-19 04:35:26,884 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4085 conditions, 1235 events. 338/1235 cut-off events. For 3067/3252 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 10732 event pairs, 154 based on Foata normal form. 6/1173 useless extension candidates. Maximal degree in co-relation 4008. Up to 491 conditions per place. [2022-01-19 04:35:26,888 INFO L132 encePairwiseOnDemand]: 59/64 looper letters, 39 selfloop transitions, 22 changer transitions 8/113 dead transitions. [2022-01-19 04:35:26,889 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 113 transitions, 926 flow [2022-01-19 04:35:26,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 04:35:26,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 04:35:26,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 160 transitions. [2022-01-19 04:35:26,889 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8333333333333334 [2022-01-19 04:35:26,889 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 160 transitions. [2022-01-19 04:35:26,890 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 160 transitions. [2022-01-19 04:35:26,890 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 04:35:26,890 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 160 transitions. [2022-01-19 04:35:26,890 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 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) [2022-01-19 04:35:26,891 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 64.0) internal successors, (256), 4 states have internal predecessors, (256), 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) [2022-01-19 04:35:26,891 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 64.0) internal successors, (256), 4 states have internal predecessors, (256), 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) [2022-01-19 04:35:26,891 INFO L186 Difference]: Start difference. First operand has 87 places, 92 transitions, 574 flow. Second operand 3 states and 160 transitions. [2022-01-19 04:35:26,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 113 transitions, 926 flow [2022-01-19 04:35:26,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 113 transitions, 904 flow, removed 11 selfloop flow, removed 0 redundant places. [2022-01-19 04:35:26,900 INFO L242 Difference]: Finished difference. Result has 91 places, 103 transitions, 794 flow [2022-01-19 04:35:26,901 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=562, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=794, PETRI_PLACES=91, PETRI_TRANSITIONS=103} [2022-01-19 04:35:26,901 INFO L334 CegarLoopForPetriNet]: 70 programPoint places, 21 predicate places. [2022-01-19 04:35:26,901 INFO L470 AbstractCegarLoop]: Abstraction has has 91 places, 103 transitions, 794 flow [2022-01-19 04:35:26,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 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) [2022-01-19 04:35:26,901 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:35:26,901 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 04:35:26,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-19 04:35:26,902 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-19 04:35:26,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:35:26,902 INFO L85 PathProgramCache]: Analyzing trace with hash 567087181, now seen corresponding path program 1 times [2022-01-19 04:35:26,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:35:26,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060950931] [2022-01-19 04:35:26,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:35:26,902 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:35:26,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 04:35:26,938 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-01-19 04:35:26,938 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 04:35:26,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060950931] [2022-01-19 04:35:26,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060950931] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 04:35:26,938 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 04:35:26,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 04:35:26,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887904791] [2022-01-19 04:35:26,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 04:35:26,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 04:35:26,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 04:35:26,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 04:35:26,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-19 04:35:26,939 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 64 [2022-01-19 04:35:26,939 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 103 transitions, 794 flow. Second operand has 5 states, 5 states have (on average 46.4) internal successors, (232), 5 states have internal predecessors, (232), 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) [2022-01-19 04:35:26,940 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 04:35:26,940 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 64 [2022-01-19 04:35:26,940 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 04:35:27,168 INFO L129 PetriNetUnfolder]: 554/2032 cut-off events. [2022-01-19 04:35:27,169 INFO L130 PetriNetUnfolder]: For 6940/7069 co-relation queries the response was YES. [2022-01-19 04:35:27,176 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7525 conditions, 2032 events. 554/2032 cut-off events. For 6940/7069 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 19861 event pairs, 117 based on Foata normal form. 49/2061 useless extension candidates. Maximal degree in co-relation 7428. Up to 377 conditions per place. [2022-01-19 04:35:27,183 INFO L132 encePairwiseOnDemand]: 55/64 looper letters, 73 selfloop transitions, 64 changer transitions 17/195 dead transitions. [2022-01-19 04:35:27,183 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 195 transitions, 2140 flow [2022-01-19 04:35:27,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 04:35:27,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 04:35:27,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 362 transitions. [2022-01-19 04:35:27,185 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8080357142857143 [2022-01-19 04:35:27,185 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 362 transitions. [2022-01-19 04:35:27,185 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 362 transitions. [2022-01-19 04:35:27,185 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 04:35:27,185 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 362 transitions. [2022-01-19 04:35:27,186 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 51.714285714285715) internal successors, (362), 7 states have internal predecessors, (362), 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) [2022-01-19 04:35:27,187 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 64.0) internal successors, (512), 8 states have internal predecessors, (512), 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) [2022-01-19 04:35:27,188 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 64.0) internal successors, (512), 8 states have internal predecessors, (512), 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) [2022-01-19 04:35:27,188 INFO L186 Difference]: Start difference. First operand has 91 places, 103 transitions, 794 flow. Second operand 7 states and 362 transitions. [2022-01-19 04:35:27,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 195 transitions, 2140 flow [2022-01-19 04:35:27,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 195 transitions, 2038 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-01-19 04:35:27,234 INFO L242 Difference]: Finished difference. Result has 99 places, 149 transitions, 1600 flow [2022-01-19 04:35:27,234 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=750, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1600, PETRI_PLACES=99, PETRI_TRANSITIONS=149} [2022-01-19 04:35:27,234 INFO L334 CegarLoopForPetriNet]: 70 programPoint places, 29 predicate places. [2022-01-19 04:35:27,234 INFO L470 AbstractCegarLoop]: Abstraction has has 99 places, 149 transitions, 1600 flow [2022-01-19 04:35:27,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 46.4) internal successors, (232), 5 states have internal predecessors, (232), 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) [2022-01-19 04:35:27,235 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:35:27,235 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 04:35:27,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-19 04:35:27,236 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-19 04:35:27,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:35:27,236 INFO L85 PathProgramCache]: Analyzing trace with hash 972180903, now seen corresponding path program 2 times [2022-01-19 04:35:27,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:35:27,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817469982] [2022-01-19 04:35:27,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:35:27,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:35:27,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 04:35:27,285 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-01-19 04:35:27,285 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 04:35:27,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817469982] [2022-01-19 04:35:27,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817469982] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 04:35:27,285 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 04:35:27,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 04:35:27,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737666526] [2022-01-19 04:35:27,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 04:35:27,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 04:35:27,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 04:35:27,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 04:35:27,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-19 04:35:27,286 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 64 [2022-01-19 04:35:27,287 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 149 transitions, 1600 flow. Second operand has 5 states, 5 states have (on average 46.4) internal successors, (232), 5 states have internal predecessors, (232), 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) [2022-01-19 04:35:27,287 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 04:35:27,287 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 64 [2022-01-19 04:35:27,287 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 04:35:27,569 INFO L129 PetriNetUnfolder]: 464/1899 cut-off events. [2022-01-19 04:35:27,569 INFO L130 PetriNetUnfolder]: For 8741/8895 co-relation queries the response was YES. [2022-01-19 04:35:27,578 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7719 conditions, 1899 events. 464/1899 cut-off events. For 8741/8895 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 19007 event pairs, 85 based on Foata normal form. 58/1941 useless extension candidates. Maximal degree in co-relation 7616. Up to 370 conditions per place. [2022-01-19 04:35:27,584 INFO L132 encePairwiseOnDemand]: 55/64 looper letters, 67 selfloop transitions, 62 changer transitions 17/187 dead transitions. [2022-01-19 04:35:27,584 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 187 transitions, 2247 flow [2022-01-19 04:35:27,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-19 04:35:27,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-01-19 04:35:27,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 316 transitions. [2022-01-19 04:35:27,585 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8229166666666666 [2022-01-19 04:35:27,585 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 316 transitions. [2022-01-19 04:35:27,586 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 316 transitions. [2022-01-19 04:35:27,586 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 04:35:27,586 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 316 transitions. [2022-01-19 04:35:27,586 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 52.666666666666664) internal successors, (316), 6 states have internal predecessors, (316), 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) [2022-01-19 04:35:27,587 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 64.0) internal successors, (448), 7 states have internal predecessors, (448), 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) [2022-01-19 04:35:27,587 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 64.0) internal successors, (448), 7 states have internal predecessors, (448), 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) [2022-01-19 04:35:27,587 INFO L186 Difference]: Start difference. First operand has 99 places, 149 transitions, 1600 flow. Second operand 6 states and 316 transitions. [2022-01-19 04:35:27,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 187 transitions, 2247 flow [2022-01-19 04:35:27,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 187 transitions, 2239 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-01-19 04:35:27,609 INFO L242 Difference]: Finished difference. Result has 106 places, 149 transitions, 1835 flow [2022-01-19 04:35:27,609 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=1582, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1835, PETRI_PLACES=106, PETRI_TRANSITIONS=149} [2022-01-19 04:35:27,610 INFO L334 CegarLoopForPetriNet]: 70 programPoint places, 36 predicate places. [2022-01-19 04:35:27,610 INFO L470 AbstractCegarLoop]: Abstraction has has 106 places, 149 transitions, 1835 flow [2022-01-19 04:35:27,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 46.4) internal successors, (232), 5 states have internal predecessors, (232), 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) [2022-01-19 04:35:27,610 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:35:27,610 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 04:35:27,610 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-19 04:35:27,610 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-19 04:35:27,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:35:27,611 INFO L85 PathProgramCache]: Analyzing trace with hash -454694551, now seen corresponding path program 1 times [2022-01-19 04:35:27,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:35:27,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234349426] [2022-01-19 04:35:27,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:35:27,611 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:35:27,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 04:35:27,655 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-19 04:35:27,655 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 04:35:27,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234349426] [2022-01-19 04:35:27,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234349426] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 04:35:27,656 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 04:35:27,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 04:35:27,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774208669] [2022-01-19 04:35:27,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 04:35:27,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 04:35:27,656 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 04:35:27,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 04:35:27,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-19 04:35:27,657 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 64 [2022-01-19 04:35:27,658 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 149 transitions, 1835 flow. Second operand has 5 states, 5 states have (on average 46.4) internal successors, (232), 5 states have internal predecessors, (232), 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) [2022-01-19 04:35:27,658 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 04:35:27,658 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 64 [2022-01-19 04:35:27,658 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 04:35:27,975 INFO L129 PetriNetUnfolder]: 540/2219 cut-off events. [2022-01-19 04:35:27,975 INFO L130 PetriNetUnfolder]: For 14092/14119 co-relation queries the response was YES. [2022-01-19 04:35:27,983 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10266 conditions, 2219 events. 540/2219 cut-off events. For 14092/14119 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 23086 event pairs, 78 based on Foata normal form. 40/2250 useless extension candidates. Maximal degree in co-relation 10175. Up to 411 conditions per place. [2022-01-19 04:35:27,988 INFO L132 encePairwiseOnDemand]: 55/64 looper letters, 58 selfloop transitions, 32 changer transitions 95/226 dead transitions. [2022-01-19 04:35:27,988 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 226 transitions, 3189 flow [2022-01-19 04:35:27,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-19 04:35:27,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-01-19 04:35:27,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 310 transitions. [2022-01-19 04:35:27,989 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8072916666666666 [2022-01-19 04:35:27,989 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 310 transitions. [2022-01-19 04:35:27,989 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 310 transitions. [2022-01-19 04:35:27,989 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 04:35:27,989 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 310 transitions. [2022-01-19 04:35:27,990 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 51.666666666666664) internal successors, (310), 6 states have internal predecessors, (310), 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) [2022-01-19 04:35:27,991 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 64.0) internal successors, (448), 7 states have internal predecessors, (448), 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) [2022-01-19 04:35:27,991 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 64.0) internal successors, (448), 7 states have internal predecessors, (448), 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) [2022-01-19 04:35:27,991 INFO L186 Difference]: Start difference. First operand has 106 places, 149 transitions, 1835 flow. Second operand 6 states and 310 transitions. [2022-01-19 04:35:27,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 226 transitions, 3189 flow [2022-01-19 04:35:28,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 226 transitions, 3101 flow, removed 42 selfloop flow, removed 1 redundant places. [2022-01-19 04:35:28,022 INFO L242 Difference]: Finished difference. Result has 114 places, 126 transitions, 1526 flow [2022-01-19 04:35:28,022 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=1791, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1526, PETRI_PLACES=114, PETRI_TRANSITIONS=126} [2022-01-19 04:35:28,023 INFO L334 CegarLoopForPetriNet]: 70 programPoint places, 44 predicate places. [2022-01-19 04:35:28,023 INFO L470 AbstractCegarLoop]: Abstraction has has 114 places, 126 transitions, 1526 flow [2022-01-19 04:35:28,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 46.4) internal successors, (232), 5 states have internal predecessors, (232), 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) [2022-01-19 04:35:28,023 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:35:28,023 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 04:35:28,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-19 04:35:28,023 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-19 04:35:28,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:35:28,023 INFO L85 PathProgramCache]: Analyzing trace with hash 47274071, now seen corresponding path program 2 times [2022-01-19 04:35:28,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:35:28,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259116266] [2022-01-19 04:35:28,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:35:28,024 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:35:28,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 04:35:28,055 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-01-19 04:35:28,055 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 04:35:28,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259116266] [2022-01-19 04:35:28,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259116266] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 04:35:28,055 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 04:35:28,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 04:35:28,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600918557] [2022-01-19 04:35:28,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 04:35:28,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 04:35:28,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 04:35:28,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 04:35:28,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-19 04:35:28,056 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 64 [2022-01-19 04:35:28,056 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 126 transitions, 1526 flow. Second operand has 5 states, 5 states have (on average 46.4) internal successors, (232), 5 states have internal predecessors, (232), 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) [2022-01-19 04:35:28,056 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 04:35:28,057 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 64 [2022-01-19 04:35:28,057 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 04:35:28,197 INFO L129 PetriNetUnfolder]: 266/1110 cut-off events. [2022-01-19 04:35:28,198 INFO L130 PetriNetUnfolder]: For 9103/9113 co-relation queries the response was YES. [2022-01-19 04:35:28,201 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5517 conditions, 1110 events. 266/1110 cut-off events. For 9103/9113 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 9538 event pairs, 29 based on Foata normal form. 40/1148 useless extension candidates. Maximal degree in co-relation 5422. Up to 312 conditions per place. [2022-01-19 04:35:28,206 INFO L132 encePairwiseOnDemand]: 55/64 looper letters, 0 selfloop transitions, 0 changer transitions 162/162 dead transitions. [2022-01-19 04:35:28,206 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 162 transitions, 2241 flow [2022-01-19 04:35:28,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-19 04:35:28,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-01-19 04:35:28,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 299 transitions. [2022-01-19 04:35:28,207 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7786458333333334 [2022-01-19 04:35:28,207 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 299 transitions. [2022-01-19 04:35:28,207 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 299 transitions. [2022-01-19 04:35:28,207 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 04:35:28,208 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 299 transitions. [2022-01-19 04:35:28,208 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 49.833333333333336) internal successors, (299), 6 states have internal predecessors, (299), 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) [2022-01-19 04:35:28,209 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 64.0) internal successors, (448), 7 states have internal predecessors, (448), 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) [2022-01-19 04:35:28,209 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 64.0) internal successors, (448), 7 states have internal predecessors, (448), 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) [2022-01-19 04:35:28,209 INFO L186 Difference]: Start difference. First operand has 114 places, 126 transitions, 1526 flow. Second operand 6 states and 299 transitions. [2022-01-19 04:35:28,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 162 transitions, 2241 flow [2022-01-19 04:35:28,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 162 transitions, 2154 flow, removed 21 selfloop flow, removed 4 redundant places. [2022-01-19 04:35:28,226 INFO L242 Difference]: Finished difference. Result has 111 places, 0 transitions, 0 flow [2022-01-19 04:35:28,226 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=1448, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=111, PETRI_TRANSITIONS=0} [2022-01-19 04:35:28,227 INFO L334 CegarLoopForPetriNet]: 70 programPoint places, 41 predicate places. [2022-01-19 04:35:28,227 INFO L470 AbstractCegarLoop]: Abstraction has has 111 places, 0 transitions, 0 flow [2022-01-19 04:35:28,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 46.4) internal successors, (232), 5 states have internal predecessors, (232), 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) [2022-01-19 04:35:28,227 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-01-19 04:35:28,227 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2022-01-19 04:35:28,228 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2022-01-19 04:35:28,228 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2022-01-19 04:35:28,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-19 04:35:28,228 INFO L732 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1] [2022-01-19 04:35:28,228 INFO L309 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE (1/2) [2022-01-19 04:35:28,229 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2022-01-19 04:35:28,230 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 [2022-01-19 04:35:28,230 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-19 04:35:28,230 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 70 places, 64 transitions, 149 flow [2022-01-19 04:35:28,236 INFO L129 PetriNetUnfolder]: 4/101 cut-off events. [2022-01-19 04:35:28,236 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-01-19 04:35:28,236 INFO L84 FinitePrefix]: Finished finitePrefix Result has 117 conditions, 101 events. 4/101 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 161 event pairs, 0 based on Foata normal form. 0/90 useless extension candidates. Maximal degree in co-relation 81. Up to 8 conditions per place. [2022-01-19 04:35:28,236 INFO L82 GeneralOperation]: Start removeDead. Operand has 70 places, 64 transitions, 149 flow [2022-01-19 04:35:28,237 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 64 places, 57 transitions, 135 flow [2022-01-19 04:35:28,240 INFO L129 PetriNetUnfolder]: 0/68 cut-off events. [2022-01-19 04:35:28,240 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-01-19 04:35:28,240 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:35:28,240 INFO L254 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 04:35:28,240 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0INUSE_VIOLATION] === [2022-01-19 04:35:28,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:35:28,241 INFO L85 PathProgramCache]: Analyzing trace with hash -468720811, now seen corresponding path program 1 times [2022-01-19 04:35:28,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:35:28,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139346332] [2022-01-19 04:35:28,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:35:28,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:35:28,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-19 04:35:28,249 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-19 04:35:28,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-19 04:35:28,267 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-01-19 04:35:28,268 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-19 04:35:28,268 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION (0 of 1 remaining) [2022-01-19 04:35:28,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-19 04:35:28,268 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2022-01-19 04:35:28,268 INFO L309 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2022-01-19 04:35:28,268 WARN L235 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-01-19 04:35:28,268 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-01-19 04:35:28,279 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,279 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,279 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,279 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,279 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,279 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,279 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,279 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,279 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,279 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,279 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,279 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,279 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,280 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,280 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,280 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,280 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,280 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,280 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,280 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,280 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,280 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,280 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,280 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,280 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,281 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,281 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,281 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,281 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,281 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,281 WARN L322 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,282 WARN L322 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,282 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,282 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,282 WARN L322 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,282 WARN L322 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,282 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,282 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,282 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,282 WARN L322 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,282 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,282 WARN L322 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,282 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,282 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,282 WARN L322 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,282 WARN L322 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,282 WARN L322 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,283 WARN L322 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,283 WARN L322 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,283 WARN L322 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,283 WARN L322 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,283 WARN L322 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,283 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,283 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,283 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,283 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,284 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,284 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,284 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,284 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,284 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,284 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,284 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,284 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,284 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,284 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,285 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,285 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,285 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,285 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,285 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,285 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,285 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,285 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,285 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,285 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,286 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,286 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,286 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,286 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,286 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,286 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,286 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,286 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,286 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,286 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,286 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,286 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,286 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,286 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,286 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,286 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,287 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,287 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,287 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,287 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,287 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,287 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,287 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,287 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,287 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,287 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,287 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,287 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,288 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,288 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,288 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,288 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,288 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,288 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,288 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,288 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,288 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,288 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,288 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,288 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,289 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,289 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,289 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,289 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,289 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,289 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,289 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,289 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,290 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,290 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,290 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,290 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,290 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,290 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,290 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,290 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,290 WARN L322 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,290 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,290 WARN L322 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,290 WARN L322 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:35:28,291 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-01-19 04:35:28,293 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-19 04:35:28,293 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 [2022-01-19 04:35:28,293 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-01-19 04:35:28,293 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 75 transitions, 182 flow [2022-01-19 04:35:28,299 INFO L129 PetriNetUnfolder]: 5/125 cut-off events. [2022-01-19 04:35:28,300 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-01-19 04:35:28,300 INFO L84 FinitePrefix]: Finished finitePrefix Result has 148 conditions, 125 events. 5/125 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 217 event pairs, 0 based on Foata normal form. 0/111 useless extension candidates. Maximal degree in co-relation 109. Up to 10 conditions per place. [2022-01-19 04:35:28,300 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 75 transitions, 182 flow [2022-01-19 04:35:28,301 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 83 places, 75 transitions, 182 flow [2022-01-19 04:35:28,303 INFO L129 PetriNetUnfolder]: 2/47 cut-off events. [2022-01-19 04:35:28,303 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-01-19 04:35:28,304 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:35:28,304 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] [2022-01-19 04:35:28,304 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-19 04:35:28,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:35:28,304 INFO L85 PathProgramCache]: Analyzing trace with hash -456275018, now seen corresponding path program 1 times [2022-01-19 04:35:28,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:35:28,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903287609] [2022-01-19 04:35:28,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:35:28,304 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:35:28,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 04:35:28,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 04:35:28,318 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 04:35:28,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903287609] [2022-01-19 04:35:28,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903287609] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 04:35:28,319 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 04:35:28,319 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-19 04:35:28,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143394957] [2022-01-19 04:35:28,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 04:35:28,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 04:35:28,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 04:35:28,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 04:35:28,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 04:35:28,320 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 75 [2022-01-19 04:35:28,320 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 75 transitions, 182 flow. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 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) [2022-01-19 04:35:28,320 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 04:35:28,320 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 75 [2022-01-19 04:35:28,320 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 04:35:28,500 INFO L129 PetriNetUnfolder]: 1344/2642 cut-off events. [2022-01-19 04:35:28,500 INFO L130 PetriNetUnfolder]: For 1446/1446 co-relation queries the response was YES. [2022-01-19 04:35:28,510 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5424 conditions, 2642 events. 1344/2642 cut-off events. For 1446/1446 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 19115 event pairs, 870 based on Foata normal form. 669/2762 useless extension candidates. Maximal degree in co-relation 3515. Up to 1494 conditions per place. [2022-01-19 04:35:28,528 INFO L132 encePairwiseOnDemand]: 67/75 looper letters, 28 selfloop transitions, 5 changer transitions 0/81 dead transitions. [2022-01-19 04:35:28,528 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 81 transitions, 281 flow [2022-01-19 04:35:28,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 04:35:28,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 04:35:28,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 197 transitions. [2022-01-19 04:35:28,529 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8755555555555555 [2022-01-19 04:35:28,529 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 197 transitions. [2022-01-19 04:35:28,529 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 197 transitions. [2022-01-19 04:35:28,529 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 04:35:28,529 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 197 transitions. [2022-01-19 04:35:28,530 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 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) [2022-01-19 04:35:28,531 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 75.0) internal successors, (300), 4 states have internal predecessors, (300), 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) [2022-01-19 04:35:28,531 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 75.0) internal successors, (300), 4 states have internal predecessors, (300), 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) [2022-01-19 04:35:28,531 INFO L186 Difference]: Start difference. First operand has 83 places, 75 transitions, 182 flow. Second operand 3 states and 197 transitions. [2022-01-19 04:35:28,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 81 transitions, 281 flow [2022-01-19 04:35:28,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 81 transitions, 263 flow, removed 9 selfloop flow, removed 0 redundant places. [2022-01-19 04:35:28,534 INFO L242 Difference]: Finished difference. Result has 81 places, 72 transitions, 194 flow [2022-01-19 04:35:28,534 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=194, PETRI_PLACES=81, PETRI_TRANSITIONS=72} [2022-01-19 04:35:28,534 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, -2 predicate places. [2022-01-19 04:35:28,535 INFO L470 AbstractCegarLoop]: Abstraction has has 81 places, 72 transitions, 194 flow [2022-01-19 04:35:28,535 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 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) [2022-01-19 04:35:28,535 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:35:28,535 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 04:35:28,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-19 04:35:28,535 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-19 04:35:28,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:35:28,537 INFO L85 PathProgramCache]: Analyzing trace with hash -1917209497, now seen corresponding path program 1 times [2022-01-19 04:35:28,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:35:28,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721953662] [2022-01-19 04:35:28,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:35:28,537 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:35:28,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 04:35:28,556 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-19 04:35:28,556 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 04:35:28,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721953662] [2022-01-19 04:35:28,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721953662] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 04:35:28,557 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 04:35:28,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-19 04:35:28,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096846217] [2022-01-19 04:35:28,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 04:35:28,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 04:35:28,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 04:35:28,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 04:35:28,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 04:35:28,559 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 75 [2022-01-19 04:35:28,559 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 72 transitions, 194 flow. Second operand has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 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) [2022-01-19 04:35:28,559 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 04:35:28,559 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 75 [2022-01-19 04:35:28,559 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 04:35:28,871 INFO L129 PetriNetUnfolder]: 1768/3569 cut-off events. [2022-01-19 04:35:28,872 INFO L130 PetriNetUnfolder]: For 2165/2165 co-relation queries the response was YES. [2022-01-19 04:35:28,884 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8437 conditions, 3569 events. 1768/3569 cut-off events. For 2165/2165 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 27730 event pairs, 936 based on Foata normal form. 0/3024 useless extension candidates. Maximal degree in co-relation 8372. Up to 2004 conditions per place. [2022-01-19 04:35:28,901 INFO L132 encePairwiseOnDemand]: 69/75 looper letters, 31 selfloop transitions, 8 changer transitions 0/87 dead transitions. [2022-01-19 04:35:28,902 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 87 transitions, 336 flow [2022-01-19 04:35:28,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 04:35:28,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 04:35:28,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 192 transitions. [2022-01-19 04:35:28,903 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8533333333333334 [2022-01-19 04:35:28,903 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 192 transitions. [2022-01-19 04:35:28,903 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 192 transitions. [2022-01-19 04:35:28,903 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 04:35:28,903 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 192 transitions. [2022-01-19 04:35:28,903 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 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) [2022-01-19 04:35:28,904 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 75.0) internal successors, (300), 4 states have internal predecessors, (300), 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) [2022-01-19 04:35:28,904 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 75.0) internal successors, (300), 4 states have internal predecessors, (300), 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) [2022-01-19 04:35:28,904 INFO L186 Difference]: Start difference. First operand has 81 places, 72 transitions, 194 flow. Second operand 3 states and 192 transitions. [2022-01-19 04:35:28,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 87 transitions, 336 flow [2022-01-19 04:35:28,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 87 transitions, 318 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-01-19 04:35:28,909 INFO L242 Difference]: Finished difference. Result has 83 places, 78 transitions, 252 flow [2022-01-19 04:35:28,909 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=252, PETRI_PLACES=83, PETRI_TRANSITIONS=78} [2022-01-19 04:35:28,910 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 0 predicate places. [2022-01-19 04:35:28,910 INFO L470 AbstractCegarLoop]: Abstraction has has 83 places, 78 transitions, 252 flow [2022-01-19 04:35:28,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 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) [2022-01-19 04:35:28,910 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:35:28,910 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 04:35:28,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-19 04:35:28,911 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-19 04:35:28,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:35:28,911 INFO L85 PathProgramCache]: Analyzing trace with hash -870085120, now seen corresponding path program 1 times [2022-01-19 04:35:28,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:35:28,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589958847] [2022-01-19 04:35:28,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:35:28,912 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:35:28,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 04:35:28,939 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-19 04:35:28,939 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 04:35:28,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589958847] [2022-01-19 04:35:28,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589958847] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 04:35:28,939 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 04:35:28,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 04:35:28,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603710504] [2022-01-19 04:35:28,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 04:35:28,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 04:35:28,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 04:35:28,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 04:35:28,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-19 04:35:28,941 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 75 [2022-01-19 04:35:28,941 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 78 transitions, 252 flow. Second operand has 5 states, 5 states have (on average 53.2) internal successors, (266), 5 states have internal predecessors, (266), 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) [2022-01-19 04:35:28,942 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 04:35:28,942 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 75 [2022-01-19 04:35:28,942 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 04:35:29,521 INFO L129 PetriNetUnfolder]: 3702/7308 cut-off events. [2022-01-19 04:35:29,521 INFO L130 PetriNetUnfolder]: For 5958/7308 co-relation queries the response was YES. [2022-01-19 04:35:29,538 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19270 conditions, 7308 events. 3702/7308 cut-off events. For 5958/7308 co-relation queries the response was YES. Maximal size of possible extension queue 459. Compared 61634 event pairs, 920 based on Foata normal form. 76/6186 useless extension candidates. Maximal degree in co-relation 19189. Up to 1986 conditions per place. [2022-01-19 04:35:29,572 INFO L132 encePairwiseOnDemand]: 65/75 looper letters, 73 selfloop transitions, 29 changer transitions 0/148 dead transitions. [2022-01-19 04:35:29,572 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 148 transitions, 787 flow [2022-01-19 04:35:29,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 04:35:29,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 04:35:29,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 444 transitions. [2022-01-19 04:35:29,574 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8457142857142858 [2022-01-19 04:35:29,574 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 444 transitions. [2022-01-19 04:35:29,574 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 444 transitions. [2022-01-19 04:35:29,574 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 04:35:29,574 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 444 transitions. [2022-01-19 04:35:29,575 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 63.42857142857143) internal successors, (444), 7 states have internal predecessors, (444), 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) [2022-01-19 04:35:29,575 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 75.0) internal successors, (600), 8 states have internal predecessors, (600), 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) [2022-01-19 04:35:29,576 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 75.0) internal successors, (600), 8 states have internal predecessors, (600), 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) [2022-01-19 04:35:29,576 INFO L186 Difference]: Start difference. First operand has 83 places, 78 transitions, 252 flow. Second operand 7 states and 444 transitions. [2022-01-19 04:35:29,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 148 transitions, 787 flow [2022-01-19 04:35:29,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 148 transitions, 745 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-01-19 04:35:29,585 INFO L242 Difference]: Finished difference. Result has 91 places, 101 transitions, 484 flow [2022-01-19 04:35:29,585 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=484, PETRI_PLACES=91, PETRI_TRANSITIONS=101} [2022-01-19 04:35:29,585 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 8 predicate places. [2022-01-19 04:35:29,586 INFO L470 AbstractCegarLoop]: Abstraction has has 91 places, 101 transitions, 484 flow [2022-01-19 04:35:29,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 53.2) internal successors, (266), 5 states have internal predecessors, (266), 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) [2022-01-19 04:35:29,586 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:35:29,586 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 04:35:29,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-19 04:35:29,586 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-19 04:35:29,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:35:29,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1324378714, now seen corresponding path program 2 times [2022-01-19 04:35:29,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:35:29,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102562297] [2022-01-19 04:35:29,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:35:29,587 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:35:29,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 04:35:29,607 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-19 04:35:29,607 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 04:35:29,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102562297] [2022-01-19 04:35:29,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102562297] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 04:35:29,608 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 04:35:29,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 04:35:29,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291643622] [2022-01-19 04:35:29,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 04:35:29,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 04:35:29,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 04:35:29,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 04:35:29,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-19 04:35:29,609 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 75 [2022-01-19 04:35:29,609 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 101 transitions, 484 flow. Second operand has 5 states, 5 states have (on average 53.2) internal successors, (266), 5 states have internal predecessors, (266), 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) [2022-01-19 04:35:29,609 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 04:35:29,609 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 75 [2022-01-19 04:35:29,609 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 04:35:30,207 INFO L129 PetriNetUnfolder]: 3687/7430 cut-off events. [2022-01-19 04:35:30,207 INFO L130 PetriNetUnfolder]: For 10210/10252 co-relation queries the response was YES. [2022-01-19 04:35:30,228 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22549 conditions, 7430 events. 3687/7430 cut-off events. For 10210/10252 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 64662 event pairs, 894 based on Foata normal form. 90/6553 useless extension candidates. Maximal degree in co-relation 12426. Up to 1800 conditions per place. [2022-01-19 04:35:30,264 INFO L132 encePairwiseOnDemand]: 65/75 looper letters, 73 selfloop transitions, 35 changer transitions 0/154 dead transitions. [2022-01-19 04:35:30,264 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 154 transitions, 993 flow [2022-01-19 04:35:30,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-19 04:35:30,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-01-19 04:35:30,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 384 transitions. [2022-01-19 04:35:30,265 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8533333333333334 [2022-01-19 04:35:30,265 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 384 transitions. [2022-01-19 04:35:30,265 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 384 transitions. [2022-01-19 04:35:30,265 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 04:35:30,265 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 384 transitions. [2022-01-19 04:35:30,266 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 64.0) internal successors, (384), 6 states have internal predecessors, (384), 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) [2022-01-19 04:35:30,267 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 75.0) internal successors, (525), 7 states have internal predecessors, (525), 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) [2022-01-19 04:35:30,267 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 75.0) internal successors, (525), 7 states have internal predecessors, (525), 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) [2022-01-19 04:35:30,267 INFO L186 Difference]: Start difference. First operand has 91 places, 101 transitions, 484 flow. Second operand 6 states and 384 transitions. [2022-01-19 04:35:30,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 154 transitions, 993 flow [2022-01-19 04:35:30,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 154 transitions, 989 flow, removed 2 selfloop flow, removed 0 redundant places. [2022-01-19 04:35:30,282 INFO L242 Difference]: Finished difference. Result has 100 places, 114 transitions, 745 flow [2022-01-19 04:35:30,282 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=480, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=745, PETRI_PLACES=100, PETRI_TRANSITIONS=114} [2022-01-19 04:35:30,282 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 17 predicate places. [2022-01-19 04:35:30,282 INFO L470 AbstractCegarLoop]: Abstraction has has 100 places, 114 transitions, 745 flow [2022-01-19 04:35:30,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 53.2) internal successors, (266), 5 states have internal predecessors, (266), 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) [2022-01-19 04:35:30,283 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:35:30,283 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 04:35:30,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-19 04:35:30,283 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-19 04:35:30,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:35:30,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1405795873, now seen corresponding path program 1 times [2022-01-19 04:35:30,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:35:30,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089233019] [2022-01-19 04:35:30,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:35:30,283 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:35:30,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 04:35:30,297 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-01-19 04:35:30,297 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 04:35:30,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089233019] [2022-01-19 04:35:30,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089233019] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 04:35:30,297 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 04:35:30,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-19 04:35:30,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443285819] [2022-01-19 04:35:30,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 04:35:30,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 04:35:30,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 04:35:30,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 04:35:30,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 04:35:30,298 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 75 [2022-01-19 04:35:30,299 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 114 transitions, 745 flow. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 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) [2022-01-19 04:35:30,299 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 04:35:30,299 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 75 [2022-01-19 04:35:30,299 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 04:35:31,013 INFO L129 PetriNetUnfolder]: 4582/9914 cut-off events. [2022-01-19 04:35:31,014 INFO L130 PetriNetUnfolder]: For 32331/33067 co-relation queries the response was YES. [2022-01-19 04:35:31,064 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34614 conditions, 9914 events. 4582/9914 cut-off events. For 32331/33067 co-relation queries the response was YES. Maximal size of possible extension queue 714. Compared 97925 event pairs, 1950 based on Foata normal form. 96/8902 useless extension candidates. Maximal degree in co-relation 34536. Up to 5307 conditions per place. [2022-01-19 04:35:31,120 INFO L132 encePairwiseOnDemand]: 69/75 looper letters, 72 selfloop transitions, 34 changer transitions 0/157 dead transitions. [2022-01-19 04:35:31,120 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 157 transitions, 1392 flow [2022-01-19 04:35:31,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 04:35:31,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 04:35:31,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 191 transitions. [2022-01-19 04:35:31,121 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8488888888888889 [2022-01-19 04:35:31,121 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 191 transitions. [2022-01-19 04:35:31,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 191 transitions. [2022-01-19 04:35:31,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 04:35:31,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 191 transitions. [2022-01-19 04:35:31,122 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 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) [2022-01-19 04:35:31,122 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 75.0) internal successors, (300), 4 states have internal predecessors, (300), 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) [2022-01-19 04:35:31,122 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 75.0) internal successors, (300), 4 states have internal predecessors, (300), 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) [2022-01-19 04:35:31,122 INFO L186 Difference]: Start difference. First operand has 100 places, 114 transitions, 745 flow. Second operand 3 states and 191 transitions. [2022-01-19 04:35:31,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 157 transitions, 1392 flow [2022-01-19 04:35:31,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 157 transitions, 1368 flow, removed 12 selfloop flow, removed 0 redundant places. [2022-01-19 04:35:31,175 INFO L242 Difference]: Finished difference. Result has 104 places, 136 transitions, 1163 flow [2022-01-19 04:35:31,175 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=733, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1163, PETRI_PLACES=104, PETRI_TRANSITIONS=136} [2022-01-19 04:35:31,175 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 21 predicate places. [2022-01-19 04:35:31,175 INFO L470 AbstractCegarLoop]: Abstraction has has 104 places, 136 transitions, 1163 flow [2022-01-19 04:35:31,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 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) [2022-01-19 04:35:31,176 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:35:31,176 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 04:35:31,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-19 04:35:31,176 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-19 04:35:31,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:35:31,176 INFO L85 PathProgramCache]: Analyzing trace with hash -399567784, now seen corresponding path program 1 times [2022-01-19 04:35:31,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:35:31,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647897580] [2022-01-19 04:35:31,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:35:31,177 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:35:31,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 04:35:31,223 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-01-19 04:35:31,224 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 04:35:31,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647897580] [2022-01-19 04:35:31,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647897580] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 04:35:31,224 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 04:35:31,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 04:35:31,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224704272] [2022-01-19 04:35:31,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 04:35:31,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 04:35:31,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 04:35:31,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 04:35:31,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-19 04:35:31,226 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 75 [2022-01-19 04:35:31,227 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 136 transitions, 1163 flow. Second operand has 5 states, 5 states have (on average 53.4) internal successors, (267), 5 states have internal predecessors, (267), 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) [2022-01-19 04:35:31,227 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 04:35:31,227 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 75 [2022-01-19 04:35:31,227 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 04:35:32,814 INFO L129 PetriNetUnfolder]: 7882/17707 cut-off events. [2022-01-19 04:35:32,815 INFO L130 PetriNetUnfolder]: For 77919/130461 co-relation queries the response was YES. [2022-01-19 04:35:32,888 INFO L84 FinitePrefix]: Finished finitePrefix Result has 66790 conditions, 17707 events. 7882/17707 cut-off events. For 77919/130461 co-relation queries the response was YES. Maximal size of possible extension queue 1150. Compared 192259 event pairs, 1768 based on Foata normal form. 698/16886 useless extension candidates. Maximal degree in co-relation 66692. Up to 4126 conditions per place. [2022-01-19 04:35:33,036 INFO L132 encePairwiseOnDemand]: 65/75 looper letters, 133 selfloop transitions, 113 changer transitions 0/294 dead transitions. [2022-01-19 04:35:33,036 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 294 transitions, 3422 flow [2022-01-19 04:35:33,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 04:35:33,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 04:35:33,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 438 transitions. [2022-01-19 04:35:33,037 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8342857142857143 [2022-01-19 04:35:33,037 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 438 transitions. [2022-01-19 04:35:33,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 438 transitions. [2022-01-19 04:35:33,037 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 04:35:33,037 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 438 transitions. [2022-01-19 04:35:33,038 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 62.57142857142857) internal successors, (438), 7 states have internal predecessors, (438), 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) [2022-01-19 04:35:33,039 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 75.0) internal successors, (600), 8 states have internal predecessors, (600), 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) [2022-01-19 04:35:33,039 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 75.0) internal successors, (600), 8 states have internal predecessors, (600), 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) [2022-01-19 04:35:33,039 INFO L186 Difference]: Start difference. First operand has 104 places, 136 transitions, 1163 flow. Second operand 7 states and 438 transitions. [2022-01-19 04:35:33,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 294 transitions, 3422 flow [2022-01-19 04:35:33,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 294 transitions, 3266 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-01-19 04:35:33,215 INFO L242 Difference]: Finished difference. Result has 112 places, 225 transitions, 2725 flow [2022-01-19 04:35:33,215 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=1095, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2725, PETRI_PLACES=112, PETRI_TRANSITIONS=225} [2022-01-19 04:35:33,215 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 29 predicate places. [2022-01-19 04:35:33,216 INFO L470 AbstractCegarLoop]: Abstraction has has 112 places, 225 transitions, 2725 flow [2022-01-19 04:35:33,216 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 53.4) internal successors, (267), 5 states have internal predecessors, (267), 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) [2022-01-19 04:35:33,216 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:35:33,216 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 04:35:33,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-19 04:35:33,216 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-19 04:35:33,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:35:33,216 INFO L85 PathProgramCache]: Analyzing trace with hash -889159118, now seen corresponding path program 2 times [2022-01-19 04:35:33,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:35:33,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775663068] [2022-01-19 04:35:33,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:35:33,217 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:35:33,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 04:35:33,249 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-01-19 04:35:33,249 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 04:35:33,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775663068] [2022-01-19 04:35:33,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775663068] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 04:35:33,249 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 04:35:33,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 04:35:33,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830205348] [2022-01-19 04:35:33,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 04:35:33,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 04:35:33,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 04:35:33,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 04:35:33,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-19 04:35:33,250 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 75 [2022-01-19 04:35:33,250 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 225 transitions, 2725 flow. Second operand has 5 states, 5 states have (on average 53.4) internal successors, (267), 5 states have internal predecessors, (267), 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) [2022-01-19 04:35:33,250 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 04:35:33,251 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 75 [2022-01-19 04:35:33,251 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 04:35:35,069 INFO L129 PetriNetUnfolder]: 7684/17580 cut-off events. [2022-01-19 04:35:35,070 INFO L130 PetriNetUnfolder]: For 88851/92800 co-relation queries the response was YES. [2022-01-19 04:35:35,132 INFO L84 FinitePrefix]: Finished finitePrefix Result has 73906 conditions, 17580 events. 7684/17580 cut-off events. For 88851/92800 co-relation queries the response was YES. Maximal size of possible extension queue 1240. Compared 193832 event pairs, 1584 based on Foata normal form. 370/16564 useless extension candidates. Maximal degree in co-relation 73802. Up to 4041 conditions per place. [2022-01-19 04:35:35,215 INFO L132 encePairwiseOnDemand]: 65/75 looper letters, 122 selfloop transitions, 140 changer transitions 0/310 dead transitions. [2022-01-19 04:35:35,215 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 310 transitions, 4160 flow [2022-01-19 04:35:35,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-19 04:35:35,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-01-19 04:35:35,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 381 transitions. [2022-01-19 04:35:35,216 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8466666666666667 [2022-01-19 04:35:35,216 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 381 transitions. [2022-01-19 04:35:35,216 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 381 transitions. [2022-01-19 04:35:35,217 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 04:35:35,217 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 381 transitions. [2022-01-19 04:35:35,217 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 63.5) internal successors, (381), 6 states have internal predecessors, (381), 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) [2022-01-19 04:35:35,218 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 75.0) internal successors, (525), 7 states have internal predecessors, (525), 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) [2022-01-19 04:35:35,218 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 75.0) internal successors, (525), 7 states have internal predecessors, (525), 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) [2022-01-19 04:35:35,218 INFO L186 Difference]: Start difference. First operand has 112 places, 225 transitions, 2725 flow. Second operand 6 states and 381 transitions. [2022-01-19 04:35:35,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 310 transitions, 4160 flow [2022-01-19 04:35:35,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 310 transitions, 4144 flow, removed 8 selfloop flow, removed 0 redundant places. [2022-01-19 04:35:35,463 INFO L242 Difference]: Finished difference. Result has 121 places, 261 transitions, 3846 flow [2022-01-19 04:35:35,464 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=2709, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3846, PETRI_PLACES=121, PETRI_TRANSITIONS=261} [2022-01-19 04:35:35,464 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 38 predicate places. [2022-01-19 04:35:35,464 INFO L470 AbstractCegarLoop]: Abstraction has has 121 places, 261 transitions, 3846 flow [2022-01-19 04:35:35,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 53.4) internal successors, (267), 5 states have internal predecessors, (267), 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) [2022-01-19 04:35:35,465 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:35:35,465 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 04:35:35,465 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-19 04:35:35,465 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-19 04:35:35,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:35:35,465 INFO L85 PathProgramCache]: Analyzing trace with hash 429602850, now seen corresponding path program 1 times [2022-01-19 04:35:35,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:35:35,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865174478] [2022-01-19 04:35:35,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:35:35,466 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:35:35,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 04:35:35,485 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-01-19 04:35:35,486 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 04:35:35,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865174478] [2022-01-19 04:35:35,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865174478] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 04:35:35,486 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 04:35:35,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 04:35:35,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163176058] [2022-01-19 04:35:35,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 04:35:35,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 04:35:35,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 04:35:35,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 04:35:35,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-19 04:35:35,487 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 75 [2022-01-19 04:35:35,487 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 261 transitions, 3846 flow. Second operand has 5 states, 5 states have (on average 53.4) internal successors, (267), 5 states have internal predecessors, (267), 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) [2022-01-19 04:35:35,487 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 04:35:35,487 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 75 [2022-01-19 04:35:35,487 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 04:35:38,453 INFO L129 PetriNetUnfolder]: 11080/25867 cut-off events. [2022-01-19 04:35:38,453 INFO L130 PetriNetUnfolder]: For 175792/176041 co-relation queries the response was YES. [2022-01-19 04:35:38,585 INFO L84 FinitePrefix]: Finished finitePrefix Result has 121436 conditions, 25867 events. 11080/25867 cut-off events. For 175792/176041 co-relation queries the response was YES. Maximal size of possible extension queue 1971. Compared 306678 event pairs, 1849 based on Foata normal form. 236/24162 useless extension candidates. Maximal degree in co-relation 121343. Up to 6382 conditions per place. [2022-01-19 04:35:38,801 INFO L132 encePairwiseOnDemand]: 65/75 looper letters, 227 selfloop transitions, 195 changer transitions 0/471 dead transitions. [2022-01-19 04:35:38,802 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 471 transitions, 7720 flow [2022-01-19 04:35:38,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 04:35:38,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 04:35:38,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 436 transitions. [2022-01-19 04:35:38,803 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8304761904761905 [2022-01-19 04:35:38,803 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 436 transitions. [2022-01-19 04:35:38,803 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 436 transitions. [2022-01-19 04:35:38,804 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 04:35:38,804 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 436 transitions. [2022-01-19 04:35:38,804 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 62.285714285714285) internal successors, (436), 7 states have internal predecessors, (436), 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) [2022-01-19 04:35:38,805 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 75.0) internal successors, (600), 8 states have internal predecessors, (600), 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) [2022-01-19 04:35:38,805 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 75.0) internal successors, (600), 8 states have internal predecessors, (600), 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) [2022-01-19 04:35:38,805 INFO L186 Difference]: Start difference. First operand has 121 places, 261 transitions, 3846 flow. Second operand 7 states and 436 transitions. [2022-01-19 04:35:38,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 471 transitions, 7720 flow [2022-01-19 04:35:39,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 471 transitions, 7656 flow, removed 32 selfloop flow, removed 0 redundant places. [2022-01-19 04:35:39,816 INFO L242 Difference]: Finished difference. Result has 131 places, 388 transitions, 6700 flow [2022-01-19 04:35:39,816 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=3820, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6700, PETRI_PLACES=131, PETRI_TRANSITIONS=388} [2022-01-19 04:35:39,816 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 48 predicate places. [2022-01-19 04:35:39,816 INFO L470 AbstractCegarLoop]: Abstraction has has 131 places, 388 transitions, 6700 flow [2022-01-19 04:35:39,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 53.4) internal successors, (267), 5 states have internal predecessors, (267), 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) [2022-01-19 04:35:39,816 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:35:39,817 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 04:35:39,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-19 04:35:39,817 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-19 04:35:39,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:35:39,817 INFO L85 PathProgramCache]: Analyzing trace with hash -21483038, now seen corresponding path program 2 times [2022-01-19 04:35:39,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:35:39,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478563183] [2022-01-19 04:35:39,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:35:39,817 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:35:39,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 04:35:39,854 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-01-19 04:35:39,854 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 04:35:39,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478563183] [2022-01-19 04:35:39,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478563183] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 04:35:39,854 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 04:35:39,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 04:35:39,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944419157] [2022-01-19 04:35:39,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 04:35:39,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 04:35:39,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 04:35:39,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 04:35:39,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-19 04:35:39,855 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 75 [2022-01-19 04:35:39,856 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 388 transitions, 6700 flow. Second operand has 5 states, 5 states have (on average 53.4) internal successors, (267), 5 states have internal predecessors, (267), 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) [2022-01-19 04:35:39,856 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 04:35:39,856 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 75 [2022-01-19 04:35:39,856 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 04:35:43,240 INFO L129 PetriNetUnfolder]: 10904/26440 cut-off events. [2022-01-19 04:35:43,240 INFO L130 PetriNetUnfolder]: For 223788/223867 co-relation queries the response was YES. [2022-01-19 04:35:43,450 INFO L84 FinitePrefix]: Finished finitePrefix Result has 135081 conditions, 26440 events. 10904/26440 cut-off events. For 223788/223867 co-relation queries the response was YES. Maximal size of possible extension queue 2149. Compared 322869 event pairs, 2117 based on Foata normal form. 236/24630 useless extension candidates. Maximal degree in co-relation 134983. Up to 5758 conditions per place. [2022-01-19 04:35:43,587 INFO L132 encePairwiseOnDemand]: 65/75 looper letters, 241 selfloop transitions, 225 changer transitions 0/515 dead transitions. [2022-01-19 04:35:43,587 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 515 transitions, 9548 flow [2022-01-19 04:35:43,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-19 04:35:43,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-01-19 04:35:43,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 378 transitions. [2022-01-19 04:35:43,589 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.84 [2022-01-19 04:35:43,589 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 378 transitions. [2022-01-19 04:35:43,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 378 transitions. [2022-01-19 04:35:43,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 04:35:43,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 378 transitions. [2022-01-19 04:35:43,590 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 63.0) internal successors, (378), 6 states have internal predecessors, (378), 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) [2022-01-19 04:35:43,591 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 75.0) internal successors, (525), 7 states have internal predecessors, (525), 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) [2022-01-19 04:35:43,591 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 75.0) internal successors, (525), 7 states have internal predecessors, (525), 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) [2022-01-19 04:35:43,591 INFO L186 Difference]: Start difference. First operand has 131 places, 388 transitions, 6700 flow. Second operand 6 states and 378 transitions. [2022-01-19 04:35:43,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 515 transitions, 9548 flow [2022-01-19 04:35:45,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 515 transitions, 9536 flow, removed 6 selfloop flow, removed 0 redundant places. [2022-01-19 04:35:45,118 INFO L242 Difference]: Finished difference. Result has 140 places, 447 transitions, 8716 flow [2022-01-19 04:35:45,119 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=6688, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=171, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=8716, PETRI_PLACES=140, PETRI_TRANSITIONS=447} [2022-01-19 04:35:45,119 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 57 predicate places. [2022-01-19 04:35:45,119 INFO L470 AbstractCegarLoop]: Abstraction has has 140 places, 447 transitions, 8716 flow [2022-01-19 04:35:45,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 53.4) internal successors, (267), 5 states have internal predecessors, (267), 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) [2022-01-19 04:35:45,119 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:35:45,120 INFO L254 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 04:35:45,120 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-19 04:35:45,120 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-19 04:35:45,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:35:45,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1455161934, now seen corresponding path program 1 times [2022-01-19 04:35:45,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:35:45,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945089528] [2022-01-19 04:35:45,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:35:45,120 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:35:45,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 04:35:45,137 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-01-19 04:35:45,138 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 04:35:45,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945089528] [2022-01-19 04:35:45,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945089528] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 04:35:45,138 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 04:35:45,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-19 04:35:45,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639137057] [2022-01-19 04:35:45,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 04:35:45,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 04:35:45,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 04:35:45,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 04:35:45,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 04:35:45,139 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 75 [2022-01-19 04:35:45,139 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 447 transitions, 8716 flow. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 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) [2022-01-19 04:35:45,139 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 04:35:45,139 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 75 [2022-01-19 04:35:45,139 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 04:35:50,416 INFO L129 PetriNetUnfolder]: 10828/31325 cut-off events. [2022-01-19 04:35:50,416 INFO L130 PetriNetUnfolder]: For 369598/376762 co-relation queries the response was YES. [2022-01-19 04:35:50,625 INFO L84 FinitePrefix]: Finished finitePrefix Result has 167482 conditions, 31325 events. 10828/31325 cut-off events. For 369598/376762 co-relation queries the response was YES. Maximal size of possible extension queue 3162. Compared 440775 event pairs, 3802 based on Foata normal form. 250/29828 useless extension candidates. Maximal degree in co-relation 167379. Up to 13689 conditions per place. [2022-01-19 04:35:51,151 INFO L132 encePairwiseOnDemand]: 69/75 looper letters, 308 selfloop transitions, 252 changer transitions 35/659 dead transitions. [2022-01-19 04:35:51,151 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 659 transitions, 14298 flow [2022-01-19 04:35:51,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 04:35:51,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 04:35:51,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 187 transitions. [2022-01-19 04:35:51,152 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8311111111111111 [2022-01-19 04:35:51,152 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 187 transitions. [2022-01-19 04:35:51,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 187 transitions. [2022-01-19 04:35:51,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 04:35:51,152 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 187 transitions. [2022-01-19 04:35:51,152 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 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) [2022-01-19 04:35:51,153 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 75.0) internal successors, (300), 4 states have internal predecessors, (300), 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) [2022-01-19 04:35:51,153 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 75.0) internal successors, (300), 4 states have internal predecessors, (300), 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) [2022-01-19 04:35:51,153 INFO L186 Difference]: Start difference. First operand has 140 places, 447 transitions, 8716 flow. Second operand 3 states and 187 transitions. [2022-01-19 04:35:51,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 659 transitions, 14298 flow [2022-01-19 04:35:52,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 659 transitions, 14168 flow, removed 65 selfloop flow, removed 0 redundant places. [2022-01-19 04:35:52,784 INFO L242 Difference]: Finished difference. Result has 144 places, 576 transitions, 12956 flow [2022-01-19 04:35:52,784 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=8648, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=447, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=12956, PETRI_PLACES=144, PETRI_TRANSITIONS=576} [2022-01-19 04:35:52,784 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 61 predicate places. [2022-01-19 04:35:52,784 INFO L470 AbstractCegarLoop]: Abstraction has has 144 places, 576 transitions, 12956 flow [2022-01-19 04:35:52,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 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) [2022-01-19 04:35:52,785 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:35:52,785 INFO L254 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 04:35:52,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-19 04:35:52,785 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-19 04:35:52,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:35:52,785 INFO L85 PathProgramCache]: Analyzing trace with hash -31812833, now seen corresponding path program 1 times [2022-01-19 04:35:52,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:35:52,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796255578] [2022-01-19 04:35:52,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:35:52,786 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:35:52,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 04:35:52,826 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-01-19 04:35:52,826 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 04:35:52,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796255578] [2022-01-19 04:35:52,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796255578] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 04:35:52,826 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 04:35:52,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 04:35:52,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511164360] [2022-01-19 04:35:52,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 04:35:52,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 04:35:52,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 04:35:52,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 04:35:52,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-19 04:35:52,827 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 75 [2022-01-19 04:35:52,827 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 576 transitions, 12956 flow. Second operand has 5 states, 5 states have (on average 53.6) internal successors, (268), 5 states have internal predecessors, (268), 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) [2022-01-19 04:35:52,827 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 04:35:52,828 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 75 [2022-01-19 04:35:52,828 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 04:36:01,617 INFO L129 PetriNetUnfolder]: 17374/51950 cut-off events. [2022-01-19 04:36:01,617 INFO L130 PetriNetUnfolder]: For 694626/701302 co-relation queries the response was YES. [2022-01-19 04:36:02,147 INFO L84 FinitePrefix]: Finished finitePrefix Result has 296388 conditions, 51950 events. 17374/51950 cut-off events. For 694626/701302 co-relation queries the response was YES. Maximal size of possible extension queue 5922. Compared 794193 event pairs, 3327 based on Foata normal form. 1129/52527 useless extension candidates. Maximal degree in co-relation 296263. Up to 9476 conditions per place. [2022-01-19 04:36:02,343 INFO L132 encePairwiseOnDemand]: 65/75 looper letters, 570 selfloop transitions, 651 changer transitions 80/1360 dead transitions. [2022-01-19 04:36:02,344 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 1360 transitions, 33971 flow [2022-01-19 04:36:02,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 04:36:02,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 04:36:02,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 428 transitions. [2022-01-19 04:36:02,345 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8152380952380952 [2022-01-19 04:36:02,345 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 428 transitions. [2022-01-19 04:36:02,345 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 428 transitions. [2022-01-19 04:36:02,345 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 04:36:02,345 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 428 transitions. [2022-01-19 04:36:02,346 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 61.142857142857146) internal successors, (428), 7 states have internal predecessors, (428), 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) [2022-01-19 04:36:02,347 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 75.0) internal successors, (600), 8 states have internal predecessors, (600), 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) [2022-01-19 04:36:02,347 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 75.0) internal successors, (600), 8 states have internal predecessors, (600), 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) [2022-01-19 04:36:02,347 INFO L186 Difference]: Start difference. First operand has 144 places, 576 transitions, 12956 flow. Second operand 7 states and 428 transitions. [2022-01-19 04:36:02,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 1360 transitions, 33971 flow [2022-01-19 04:36:06,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 1360 transitions, 32899 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-01-19 04:36:07,015 INFO L242 Difference]: Finished difference. Result has 152 places, 1047 transitions, 27206 flow [2022-01-19 04:36:07,016 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=12452, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=576, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=202, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=27206, PETRI_PLACES=152, PETRI_TRANSITIONS=1047} [2022-01-19 04:36:07,016 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 69 predicate places. [2022-01-19 04:36:07,016 INFO L470 AbstractCegarLoop]: Abstraction has has 152 places, 1047 transitions, 27206 flow [2022-01-19 04:36:07,016 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 53.6) internal successors, (268), 5 states have internal predecessors, (268), 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) [2022-01-19 04:36:07,016 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:36:07,017 INFO L254 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 04:36:07,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-19 04:36:07,017 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-19 04:36:07,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:36:07,017 INFO L85 PathProgramCache]: Analyzing trace with hash 2128554399, now seen corresponding path program 2 times [2022-01-19 04:36:07,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:36:07,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859998541] [2022-01-19 04:36:07,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:36:07,017 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:36:07,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 04:36:07,050 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-01-19 04:36:07,050 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 04:36:07,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859998541] [2022-01-19 04:36:07,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859998541] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 04:36:07,051 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 04:36:07,051 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 04:36:07,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807148128] [2022-01-19 04:36:07,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 04:36:07,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 04:36:07,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 04:36:07,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 04:36:07,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-19 04:36:07,052 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 75 [2022-01-19 04:36:07,052 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 1047 transitions, 27206 flow. Second operand has 5 states, 5 states have (on average 53.6) internal successors, (268), 5 states have internal predecessors, (268), 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) [2022-01-19 04:36:07,052 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 04:36:07,052 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 75 [2022-01-19 04:36:07,052 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 04:36:19,825 INFO L129 PetriNetUnfolder]: 15925/50773 cut-off events. [2022-01-19 04:36:19,825 INFO L130 PetriNetUnfolder]: For 779572/785229 co-relation queries the response was YES. [2022-01-19 04:36:20,316 INFO L84 FinitePrefix]: Finished finitePrefix Result has 308016 conditions, 50773 events. 15925/50773 cut-off events. For 779572/785229 co-relation queries the response was YES. Maximal size of possible extension queue 5843. Compared 798835 event pairs, 2349 based on Foata normal form. 1260/51529 useless extension candidates. Maximal degree in co-relation 307885. Up to 9198 conditions per place. [2022-01-19 04:36:20,484 INFO L132 encePairwiseOnDemand]: 65/75 looper letters, 476 selfloop transitions, 669 changer transitions 117/1321 dead transitions. [2022-01-19 04:36:20,485 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 1321 transitions, 35457 flow [2022-01-19 04:36:20,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-19 04:36:20,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-01-19 04:36:20,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 374 transitions. [2022-01-19 04:36:20,486 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8311111111111111 [2022-01-19 04:36:20,486 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 374 transitions. [2022-01-19 04:36:20,486 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 374 transitions. [2022-01-19 04:36:20,486 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 04:36:20,486 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 374 transitions. [2022-01-19 04:36:20,486 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 62.333333333333336) internal successors, (374), 6 states have internal predecessors, (374), 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) [2022-01-19 04:36:20,487 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 75.0) internal successors, (525), 7 states have internal predecessors, (525), 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) [2022-01-19 04:36:20,487 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 75.0) internal successors, (525), 7 states have internal predecessors, (525), 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) [2022-01-19 04:36:20,487 INFO L186 Difference]: Start difference. First operand has 152 places, 1047 transitions, 27206 flow. Second operand 6 states and 374 transitions. [2022-01-19 04:36:20,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 1321 transitions, 35457 flow [2022-01-19 04:36:25,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 1321 transitions, 35379 flow, removed 39 selfloop flow, removed 0 redundant places. [2022-01-19 04:36:25,618 INFO L242 Difference]: Finished difference. Result has 160 places, 1087 transitions, 30619 flow [2022-01-19 04:36:25,619 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=27114, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1046, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=605, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=398, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=30619, PETRI_PLACES=160, PETRI_TRANSITIONS=1087} [2022-01-19 04:36:25,621 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 77 predicate places. [2022-01-19 04:36:25,622 INFO L470 AbstractCegarLoop]: Abstraction has has 160 places, 1087 transitions, 30619 flow [2022-01-19 04:36:25,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 53.6) internal successors, (268), 5 states have internal predecessors, (268), 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) [2022-01-19 04:36:25,622 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:36:25,622 INFO L254 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 04:36:25,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-01-19 04:36:25,622 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-19 04:36:25,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:36:25,622 INFO L85 PathProgramCache]: Analyzing trace with hash 797357801, now seen corresponding path program 1 times [2022-01-19 04:36:25,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:36:25,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602472403] [2022-01-19 04:36:25,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:36:25,623 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:36:25,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 04:36:25,646 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-01-19 04:36:25,646 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 04:36:25,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602472403] [2022-01-19 04:36:25,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602472403] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 04:36:25,646 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 04:36:25,646 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 04:36:25,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405689133] [2022-01-19 04:36:25,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 04:36:25,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 04:36:25,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 04:36:25,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 04:36:25,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-19 04:36:25,648 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 75 [2022-01-19 04:36:25,648 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 1087 transitions, 30619 flow. Second operand has 5 states, 5 states have (on average 53.6) internal successors, (268), 5 states have internal predecessors, (268), 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) [2022-01-19 04:36:25,648 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 04:36:25,648 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 75 [2022-01-19 04:36:25,648 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 04:36:44,148 INFO L129 PetriNetUnfolder]: 20931/69658 cut-off events. [2022-01-19 04:36:44,148 INFO L130 PetriNetUnfolder]: For 1244302/1247702 co-relation queries the response was YES. [2022-01-19 04:36:44,878 INFO L84 FinitePrefix]: Finished finitePrefix Result has 452821 conditions, 69658 events. 20931/69658 cut-off events. For 1244302/1247702 co-relation queries the response was YES. Maximal size of possible extension queue 8544. Compared 1165263 event pairs, 2392 based on Foata normal form. 879/70015 useless extension candidates. Maximal degree in co-relation 452703. Up to 12698 conditions per place. [2022-01-19 04:36:45,092 INFO L132 encePairwiseOnDemand]: 65/75 looper letters, 753 selfloop transitions, 828 changer transitions 259/1901 dead transitions. [2022-01-19 04:36:45,092 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 1901 transitions, 55482 flow [2022-01-19 04:36:45,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 04:36:45,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 04:36:45,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 424 transitions. [2022-01-19 04:36:45,095 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8076190476190476 [2022-01-19 04:36:45,095 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 424 transitions. [2022-01-19 04:36:45,097 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 424 transitions. [2022-01-19 04:36:45,101 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 04:36:45,101 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 424 transitions. [2022-01-19 04:36:45,102 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 60.57142857142857) internal successors, (424), 7 states have internal predecessors, (424), 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) [2022-01-19 04:36:45,103 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 75.0) internal successors, (600), 8 states have internal predecessors, (600), 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) [2022-01-19 04:36:45,103 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 75.0) internal successors, (600), 8 states have internal predecessors, (600), 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) [2022-01-19 04:36:45,103 INFO L186 Difference]: Start difference. First operand has 160 places, 1087 transitions, 30619 flow. Second operand 7 states and 424 transitions. [2022-01-19 04:36:45,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 1901 transitions, 55482 flow [2022-01-19 04:36:57,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 1901 transitions, 55182 flow, removed 150 selfloop flow, removed 0 redundant places. [2022-01-19 04:36:57,889 INFO L242 Difference]: Finished difference. Result has 170 places, 1450 transitions, 43830 flow [2022-01-19 04:36:57,890 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=30437, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1087, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=420, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=494, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=43830, PETRI_PLACES=170, PETRI_TRANSITIONS=1450} [2022-01-19 04:36:57,890 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 87 predicate places. [2022-01-19 04:36:57,890 INFO L470 AbstractCegarLoop]: Abstraction has has 170 places, 1450 transitions, 43830 flow [2022-01-19 04:36:57,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 53.6) internal successors, (268), 5 states have internal predecessors, (268), 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) [2022-01-19 04:36:57,890 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:36:57,891 INFO L254 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 04:36:57,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-01-19 04:36:57,891 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-19 04:36:57,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:36:57,892 INFO L85 PathProgramCache]: Analyzing trace with hash 2113761001, now seen corresponding path program 2 times [2022-01-19 04:36:57,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:36:57,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344628465] [2022-01-19 04:36:57,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:36:57,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:36:57,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 04:36:57,927 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-01-19 04:36:57,927 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 04:36:57,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344628465] [2022-01-19 04:36:57,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344628465] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 04:36:57,928 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 04:36:57,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 04:36:57,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239082138] [2022-01-19 04:36:57,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 04:36:57,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 04:36:57,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 04:36:57,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 04:36:57,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-19 04:36:57,929 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 75 [2022-01-19 04:36:57,929 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 1450 transitions, 43830 flow. Second operand has 5 states, 5 states have (on average 53.6) internal successors, (268), 5 states have internal predecessors, (268), 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) [2022-01-19 04:36:57,929 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 04:36:57,929 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 75 [2022-01-19 04:36:57,929 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 04:37:20,209 INFO L129 PetriNetUnfolder]: 18377/65157 cut-off events. [2022-01-19 04:37:20,209 INFO L130 PetriNetUnfolder]: For 1341359/1344001 co-relation queries the response was YES. [2022-01-19 04:37:20,876 INFO L84 FinitePrefix]: Finished finitePrefix Result has 445553 conditions, 65157 events. 18377/65157 cut-off events. For 1341359/1344001 co-relation queries the response was YES. Maximal size of possible extension queue 8079. Compared 1110558 event pairs, 2087 based on Foata normal form. 957/65689 useless extension candidates. Maximal degree in co-relation 445430. Up to 11903 conditions per place. [2022-01-19 04:37:21,051 INFO L132 encePairwiseOnDemand]: 65/75 looper letters, 686 selfloop transitions, 768 changer transitions 269/1784 dead transitions. [2022-01-19 04:37:21,051 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 1784 transitions, 55666 flow [2022-01-19 04:37:21,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-19 04:37:21,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-01-19 04:37:21,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 369 transitions. [2022-01-19 04:37:21,052 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.82 [2022-01-19 04:37:21,052 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 369 transitions. [2022-01-19 04:37:21,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 369 transitions. [2022-01-19 04:37:21,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 04:37:21,052 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 369 transitions. [2022-01-19 04:37:21,053 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 61.5) internal successors, (369), 6 states have internal predecessors, (369), 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) [2022-01-19 04:37:21,053 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 75.0) internal successors, (525), 7 states have internal predecessors, (525), 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) [2022-01-19 04:37:21,053 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 75.0) internal successors, (525), 7 states have internal predecessors, (525), 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) [2022-01-19 04:37:21,053 INFO L186 Difference]: Start difference. First operand has 170 places, 1450 transitions, 43830 flow. Second operand 6 states and 369 transitions. [2022-01-19 04:37:21,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 1784 transitions, 55666 flow [2022-01-19 04:37:32,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 1784 transitions, 55588 flow, removed 39 selfloop flow, removed 0 redundant places. [2022-01-19 04:37:32,966 INFO L242 Difference]: Finished difference. Result has 178 places, 1385 transitions, 44200 flow [2022-01-19 04:37:32,967 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=43738, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1449, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=709, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=700, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=44200, PETRI_PLACES=178, PETRI_TRANSITIONS=1385} [2022-01-19 04:37:32,967 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 95 predicate places. [2022-01-19 04:37:32,967 INFO L470 AbstractCegarLoop]: Abstraction has has 178 places, 1385 transitions, 44200 flow [2022-01-19 04:37:32,967 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 53.6) internal successors, (268), 5 states have internal predecessors, (268), 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) [2022-01-19 04:37:32,967 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:37:32,968 INFO L254 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 04:37:32,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-01-19 04:37:32,968 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-19 04:37:32,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:37:32,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1690154101, now seen corresponding path program 1 times [2022-01-19 04:37:32,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:37:32,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37729284] [2022-01-19 04:37:32,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:37:32,968 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:37:32,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 04:37:32,987 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-01-19 04:37:32,988 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 04:37:32,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37729284] [2022-01-19 04:37:32,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37729284] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 04:37:32,988 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 04:37:32,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 04:37:32,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012163021] [2022-01-19 04:37:32,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 04:37:32,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 04:37:32,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 04:37:32,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 04:37:32,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-19 04:37:32,989 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 75 [2022-01-19 04:37:32,989 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 1385 transitions, 44200 flow. Second operand has 5 states, 5 states have (on average 53.6) internal successors, (268), 5 states have internal predecessors, (268), 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) [2022-01-19 04:37:32,989 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 04:37:32,989 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 75 [2022-01-19 04:37:32,989 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 04:37:58,027 INFO L129 PetriNetUnfolder]: 20404/72302 cut-off events. [2022-01-19 04:37:58,027 INFO L130 PetriNetUnfolder]: For 1778842/1779640 co-relation queries the response was YES. [2022-01-19 04:37:59,081 INFO L84 FinitePrefix]: Finished finitePrefix Result has 534994 conditions, 72302 events. 20404/72302 cut-off events. For 1778842/1779640 co-relation queries the response was YES. Maximal size of possible extension queue 8899. Compared 1246857 event pairs, 1495 based on Foata normal form. 580/72656 useless extension candidates. Maximal degree in co-relation 534866. Up to 14565 conditions per place. [2022-01-19 04:37:59,221 INFO L132 encePairwiseOnDemand]: 65/75 looper letters, 456 selfloop transitions, 496 changer transitions 1145/2156 dead transitions. [2022-01-19 04:37:59,221 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 2156 transitions, 70161 flow [2022-01-19 04:37:59,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 04:37:59,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 04:37:59,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 418 transitions. [2022-01-19 04:37:59,222 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7961904761904762 [2022-01-19 04:37:59,222 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 418 transitions. [2022-01-19 04:37:59,222 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 418 transitions. [2022-01-19 04:37:59,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 04:37:59,222 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 418 transitions. [2022-01-19 04:37:59,223 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 59.714285714285715) internal successors, (418), 7 states have internal predecessors, (418), 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) [2022-01-19 04:37:59,224 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 75.0) internal successors, (600), 8 states have internal predecessors, (600), 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) [2022-01-19 04:37:59,224 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 75.0) internal successors, (600), 8 states have internal predecessors, (600), 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) [2022-01-19 04:37:59,224 INFO L186 Difference]: Start difference. First operand has 178 places, 1385 transitions, 44200 flow. Second operand 7 states and 418 transitions. [2022-01-19 04:37:59,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 2156 transitions, 70161 flow [2022-01-19 04:38:19,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 2156 transitions, 69797 flow, removed 182 selfloop flow, removed 0 redundant places. [2022-01-19 04:38:19,866 INFO L242 Difference]: Finished difference. Result has 188 places, 999 transitions, 32497 flow [2022-01-19 04:38:19,867 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=44016, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=478, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=907, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=32497, PETRI_PLACES=188, PETRI_TRANSITIONS=999} [2022-01-19 04:38:19,867 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 105 predicate places. [2022-01-19 04:38:19,867 INFO L470 AbstractCegarLoop]: Abstraction has has 188 places, 999 transitions, 32497 flow [2022-01-19 04:38:19,867 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 53.6) internal successors, (268), 5 states have internal predecessors, (268), 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) [2022-01-19 04:38:19,867 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:38:19,868 INFO L254 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 04:38:19,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-01-19 04:38:19,868 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-19 04:38:19,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:38:19,868 INFO L85 PathProgramCache]: Analyzing trace with hash -383331445, now seen corresponding path program 2 times [2022-01-19 04:38:19,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:38:19,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783251782] [2022-01-19 04:38:19,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:38:19,868 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:38:19,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 04:38:19,888 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-01-19 04:38:19,888 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 04:38:19,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783251782] [2022-01-19 04:38:19,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783251782] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 04:38:19,888 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 04:38:19,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 04:38:19,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91005790] [2022-01-19 04:38:19,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 04:38:19,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 04:38:19,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 04:38:19,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 04:38:19,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-19 04:38:19,889 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 75 [2022-01-19 04:38:19,889 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 999 transitions, 32497 flow. Second operand has 5 states, 5 states have (on average 53.6) internal successors, (268), 5 states have internal predecessors, (268), 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) [2022-01-19 04:38:19,890 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 04:38:19,890 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 75 [2022-01-19 04:38:19,890 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 04:38:29,538 INFO L129 PetriNetUnfolder]: 9098/32423 cut-off events. [2022-01-19 04:38:29,539 INFO L130 PetriNetUnfolder]: For 917943/918213 co-relation queries the response was YES. [2022-01-19 04:38:29,867 INFO L84 FinitePrefix]: Finished finitePrefix Result has 252904 conditions, 32423 events. 9098/32423 cut-off events. For 917943/918213 co-relation queries the response was YES. Maximal size of possible extension queue 3701. Compared 502006 event pairs, 439 based on Foata normal form. 580/32966 useless extension candidates. Maximal degree in co-relation 252771. Up to 9180 conditions per place. [2022-01-19 04:38:29,897 INFO L132 encePairwiseOnDemand]: 65/75 looper letters, 0 selfloop transitions, 0 changer transitions 1062/1062 dead transitions. [2022-01-19 04:38:29,898 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 1062 transitions, 35352 flow [2022-01-19 04:38:29,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-19 04:38:29,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-01-19 04:38:29,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 356 transitions. [2022-01-19 04:38:29,898 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7911111111111111 [2022-01-19 04:38:29,898 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 356 transitions. [2022-01-19 04:38:29,899 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 356 transitions. [2022-01-19 04:38:29,899 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 04:38:29,899 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 356 transitions. [2022-01-19 04:38:29,900 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 59.333333333333336) internal successors, (356), 6 states have internal predecessors, (356), 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) [2022-01-19 04:38:29,900 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 75.0) internal successors, (525), 7 states have internal predecessors, (525), 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) [2022-01-19 04:38:29,900 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 75.0) internal successors, (525), 7 states have internal predecessors, (525), 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) [2022-01-19 04:38:29,900 INFO L186 Difference]: Start difference. First operand has 188 places, 999 transitions, 32497 flow. Second operand 6 states and 356 transitions. [2022-01-19 04:38:29,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 1062 transitions, 35352 flow [2022-01-19 04:38:36,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 1062 transitions, 35006 flow, removed 173 selfloop flow, removed 2 redundant places. [2022-01-19 04:38:36,501 INFO L242 Difference]: Finished difference. Result has 187 places, 0 transitions, 0 flow [2022-01-19 04:38:36,501 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=32133, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=997, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=997, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=187, PETRI_TRANSITIONS=0} [2022-01-19 04:38:36,502 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 104 predicate places. [2022-01-19 04:38:36,502 INFO L470 AbstractCegarLoop]: Abstraction has has 187 places, 0 transitions, 0 flow [2022-01-19 04:38:36,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 53.6) internal successors, (268), 5 states have internal predecessors, (268), 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) [2022-01-19 04:38:36,502 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2022-01-19 04:38:36,502 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2022-01-19 04:38:36,502 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2022-01-19 04:38:36,502 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2022-01-19 04:38:36,502 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2022-01-19 04:38:36,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-01-19 04:38:36,503 INFO L732 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2022-01-19 04:38:36,503 INFO L309 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2022-01-19 04:38:36,503 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2022-01-19 04:38:36,504 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 [2022-01-19 04:38:36,504 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-19 04:38:36,504 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 75 transitions, 182 flow [2022-01-19 04:38:36,509 INFO L129 PetriNetUnfolder]: 5/125 cut-off events. [2022-01-19 04:38:36,509 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-01-19 04:38:36,509 INFO L84 FinitePrefix]: Finished finitePrefix Result has 148 conditions, 125 events. 5/125 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 217 event pairs, 0 based on Foata normal form. 0/111 useless extension candidates. Maximal degree in co-relation 109. Up to 10 conditions per place. [2022-01-19 04:38:36,509 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 75 transitions, 182 flow [2022-01-19 04:38:36,509 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 68 transitions, 168 flow [2022-01-19 04:38:36,512 INFO L129 PetriNetUnfolder]: 0/87 cut-off events. [2022-01-19 04:38:36,512 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-01-19 04:38:36,513 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:38:36,513 INFO L254 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 04:38:36,513 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0INUSE_VIOLATION] === [2022-01-19 04:38:36,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:38:36,513 INFO L85 PathProgramCache]: Analyzing trace with hash -791742585, now seen corresponding path program 1 times [2022-01-19 04:38:36,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:38:36,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761114604] [2022-01-19 04:38:36,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:38:36,513 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:38:36,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-19 04:38:36,520 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-19 04:38:36,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-19 04:38:36,527 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-01-19 04:38:36,527 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-19 04:38:36,527 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION (0 of 1 remaining) [2022-01-19 04:38:36,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-01-19 04:38:36,527 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2022-01-19 04:38:36,527 INFO L309 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2022-01-19 04:38:36,527 WARN L235 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2022-01-19 04:38:36,527 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2022-01-19 04:38:36,537 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,537 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,537 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,537 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,537 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,537 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,538 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,538 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,538 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,538 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,538 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,538 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,538 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,538 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,538 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,538 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,538 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,538 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,538 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,538 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,538 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,538 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,538 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,539 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,539 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,539 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,539 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,539 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,539 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,539 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,539 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,539 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,539 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,539 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,539 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,539 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,539 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,539 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,539 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,540 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,540 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,540 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,540 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,540 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,540 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,540 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,540 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,540 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,540 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,540 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,540 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,540 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,540 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,540 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,540 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,540 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,541 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,541 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,541 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,541 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,541 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,541 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,541 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,541 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,541 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,541 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,541 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,541 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,541 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,541 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,541 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,541 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,542 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,542 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,542 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,542 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,542 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,542 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,542 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,542 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,542 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,542 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,542 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,542 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,542 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,542 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,542 WARN L322 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,542 WARN L322 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,542 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,542 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,543 WARN L322 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,543 WARN L322 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,543 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,543 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,543 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,543 WARN L322 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,543 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,543 WARN L322 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,543 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,543 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,543 WARN L322 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,543 WARN L322 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,543 WARN L322 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,543 WARN L322 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,543 WARN L322 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,543 WARN L322 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,543 WARN L322 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,543 WARN L322 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,544 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,544 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,544 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,544 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,544 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,544 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,544 WARN L322 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,544 WARN L322 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,544 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,544 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,544 WARN L322 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,544 WARN L322 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,544 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,544 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,544 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,544 WARN L322 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,544 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,545 WARN L322 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,545 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,545 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,545 WARN L322 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,545 WARN L322 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,545 WARN L322 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,545 WARN L322 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,545 WARN L322 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,545 WARN L322 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,545 WARN L322 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,545 WARN L322 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,545 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,545 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,545 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,545 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,546 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,546 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,546 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,546 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,546 WARN L322 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,546 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,546 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,546 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,546 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,546 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,546 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,546 WARN L322 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,547 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,547 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,547 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,547 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,547 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,547 WARN L322 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,547 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,547 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,547 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,547 WARN L322 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,547 WARN L322 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,547 WARN L322 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,548 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,548 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,548 WARN L322 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,548 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,548 WARN L322 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,548 WARN L322 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:36,548 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-01-19 04:38:36,549 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-19 04:38:36,549 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 [2022-01-19 04:38:36,549 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-01-19 04:38:36,549 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 96 places, 86 transitions, 217 flow [2022-01-19 04:38:36,556 INFO L129 PetriNetUnfolder]: 6/149 cut-off events. [2022-01-19 04:38:36,556 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2022-01-19 04:38:36,557 INFO L84 FinitePrefix]: Finished finitePrefix Result has 180 conditions, 149 events. 6/149 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 266 event pairs, 0 based on Foata normal form. 0/132 useless extension candidates. Maximal degree in co-relation 138. Up to 12 conditions per place. [2022-01-19 04:38:36,557 INFO L82 GeneralOperation]: Start removeDead. Operand has 96 places, 86 transitions, 217 flow [2022-01-19 04:38:36,557 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 96 places, 86 transitions, 217 flow [2022-01-19 04:38:36,558 INFO L129 PetriNetUnfolder]: 2/46 cut-off events. [2022-01-19 04:38:36,558 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-01-19 04:38:36,558 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:38:36,559 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] [2022-01-19 04:38:36,559 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-19 04:38:36,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:38:36,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1615531528, now seen corresponding path program 1 times [2022-01-19 04:38:36,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:38:36,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568297580] [2022-01-19 04:38:36,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:38:36,559 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:38:36,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 04:38:36,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 04:38:36,570 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 04:38:36,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568297580] [2022-01-19 04:38:36,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568297580] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 04:38:36,570 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 04:38:36,570 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-19 04:38:36,570 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727157609] [2022-01-19 04:38:36,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 04:38:36,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 04:38:36,571 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 04:38:36,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 04:38:36,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 04:38:36,571 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 86 [2022-01-19 04:38:36,571 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 86 transitions, 217 flow. Second operand has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 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) [2022-01-19 04:38:36,571 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 04:38:36,572 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 86 [2022-01-19 04:38:36,572 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 04:38:37,257 INFO L129 PetriNetUnfolder]: 7474/12642 cut-off events. [2022-01-19 04:38:37,257 INFO L130 PetriNetUnfolder]: For 9085/9085 co-relation queries the response was YES. [2022-01-19 04:38:37,298 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26655 conditions, 12642 events. 7474/12642 cut-off events. For 9085/9085 co-relation queries the response was YES. Maximal size of possible extension queue 757. Compared 100629 event pairs, 5008 based on Foata normal form. 2714/12500 useless extension candidates. Maximal degree in co-relation 17174. Up to 7750 conditions per place. [2022-01-19 04:38:37,355 INFO L132 encePairwiseOnDemand]: 77/86 looper letters, 35 selfloop transitions, 6 changer transitions 0/96 dead transitions. [2022-01-19 04:38:37,355 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 96 transitions, 351 flow [2022-01-19 04:38:37,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 04:38:37,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 04:38:37,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 226 transitions. [2022-01-19 04:38:37,356 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.875968992248062 [2022-01-19 04:38:37,356 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 226 transitions. [2022-01-19 04:38:37,356 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 226 transitions. [2022-01-19 04:38:37,356 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 04:38:37,356 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 226 transitions. [2022-01-19 04:38:37,356 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 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) [2022-01-19 04:38:37,356 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 86.0) internal successors, (344), 4 states have internal predecessors, (344), 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) [2022-01-19 04:38:37,357 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 86.0) internal successors, (344), 4 states have internal predecessors, (344), 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) [2022-01-19 04:38:37,357 INFO L186 Difference]: Start difference. First operand has 96 places, 86 transitions, 217 flow. Second operand 3 states and 226 transitions. [2022-01-19 04:38:37,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 96 transitions, 351 flow [2022-01-19 04:38:37,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 96 transitions, 319 flow, removed 16 selfloop flow, removed 0 redundant places. [2022-01-19 04:38:37,359 INFO L242 Difference]: Finished difference. Result has 94 places, 84 transitions, 229 flow [2022-01-19 04:38:37,359 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=229, PETRI_PLACES=94, PETRI_TRANSITIONS=84} [2022-01-19 04:38:37,359 INFO L334 CegarLoopForPetriNet]: 96 programPoint places, -2 predicate places. [2022-01-19 04:38:37,359 INFO L470 AbstractCegarLoop]: Abstraction has has 94 places, 84 transitions, 229 flow [2022-01-19 04:38:37,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 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) [2022-01-19 04:38:37,360 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:38:37,360 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 04:38:37,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-01-19 04:38:37,360 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-19 04:38:37,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:38:37,360 INFO L85 PathProgramCache]: Analyzing trace with hash -275840951, now seen corresponding path program 1 times [2022-01-19 04:38:37,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:38:37,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417871945] [2022-01-19 04:38:37,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:38:37,360 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:38:37,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 04:38:37,378 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-19 04:38:37,378 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 04:38:37,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417871945] [2022-01-19 04:38:37,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417871945] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 04:38:37,378 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 04:38:37,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-19 04:38:37,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850389748] [2022-01-19 04:38:37,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 04:38:37,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 04:38:37,379 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 04:38:37,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 04:38:37,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 04:38:37,380 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 86 [2022-01-19 04:38:37,380 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 84 transitions, 229 flow. Second operand has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 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) [2022-01-19 04:38:37,380 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 04:38:37,380 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 86 [2022-01-19 04:38:37,380 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 04:38:38,494 INFO L129 PetriNetUnfolder]: 10409/18022 cut-off events. [2022-01-19 04:38:38,495 INFO L130 PetriNetUnfolder]: For 11040/11040 co-relation queries the response was YES. [2022-01-19 04:38:38,549 INFO L84 FinitePrefix]: Finished finitePrefix Result has 43118 conditions, 18022 events. 10409/18022 cut-off events. For 11040/11040 co-relation queries the response was YES. Maximal size of possible extension queue 1055. Compared 154362 event pairs, 5778 based on Foata normal form. 0/14837 useless extension candidates. Maximal degree in co-relation 43052. Up to 10999 conditions per place. [2022-01-19 04:38:38,629 INFO L132 encePairwiseOnDemand]: 79/86 looper letters, 39 selfloop transitions, 10 changer transitions 0/104 dead transitions. [2022-01-19 04:38:38,629 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 104 transitions, 412 flow [2022-01-19 04:38:38,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 04:38:38,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 04:38:38,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 221 transitions. [2022-01-19 04:38:38,630 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8565891472868217 [2022-01-19 04:38:38,630 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 221 transitions. [2022-01-19 04:38:38,630 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 221 transitions. [2022-01-19 04:38:38,630 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 04:38:38,630 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 221 transitions. [2022-01-19 04:38:38,630 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 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) [2022-01-19 04:38:38,630 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 86.0) internal successors, (344), 4 states have internal predecessors, (344), 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) [2022-01-19 04:38:38,631 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 86.0) internal successors, (344), 4 states have internal predecessors, (344), 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) [2022-01-19 04:38:38,631 INFO L186 Difference]: Start difference. First operand has 94 places, 84 transitions, 229 flow. Second operand 3 states and 221 transitions. [2022-01-19 04:38:38,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 104 transitions, 412 flow [2022-01-19 04:38:38,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 104 transitions, 390 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-01-19 04:38:38,660 INFO L242 Difference]: Finished difference. Result has 96 places, 92 transitions, 305 flow [2022-01-19 04:38:38,660 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=305, PETRI_PLACES=96, PETRI_TRANSITIONS=92} [2022-01-19 04:38:38,660 INFO L334 CegarLoopForPetriNet]: 96 programPoint places, 0 predicate places. [2022-01-19 04:38:38,660 INFO L470 AbstractCegarLoop]: Abstraction has has 96 places, 92 transitions, 305 flow [2022-01-19 04:38:38,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 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) [2022-01-19 04:38:38,661 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:38:38,661 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 04:38:38,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-01-19 04:38:38,661 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-19 04:38:38,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:38:38,661 INFO L85 PathProgramCache]: Analyzing trace with hash -1502870282, now seen corresponding path program 1 times [2022-01-19 04:38:38,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:38:38,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707386988] [2022-01-19 04:38:38,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:38:38,661 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:38:38,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 04:38:38,687 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-19 04:38:38,688 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 04:38:38,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707386988] [2022-01-19 04:38:38,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707386988] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 04:38:38,688 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 04:38:38,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 04:38:38,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527074426] [2022-01-19 04:38:38,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 04:38:38,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 04:38:38,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 04:38:38,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 04:38:38,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-19 04:38:38,689 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 86 [2022-01-19 04:38:38,689 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 92 transitions, 305 flow. Second operand has 5 states, 5 states have (on average 60.2) internal successors, (301), 5 states have internal predecessors, (301), 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) [2022-01-19 04:38:38,689 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 04:38:38,689 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 86 [2022-01-19 04:38:38,689 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 04:38:41,108 INFO L129 PetriNetUnfolder]: 21834/36235 cut-off events. [2022-01-19 04:38:41,109 INFO L130 PetriNetUnfolder]: For 27039/27039 co-relation queries the response was YES. [2022-01-19 04:38:41,268 INFO L84 FinitePrefix]: Finished finitePrefix Result has 98544 conditions, 36235 events. 21834/36235 cut-off events. For 27039/27039 co-relation queries the response was YES. Maximal size of possible extension queue 1931. Compared 321178 event pairs, 3234 based on Foata normal form. 170/29762 useless extension candidates. Maximal degree in co-relation 98462. Up to 10933 conditions per place. [2022-01-19 04:38:41,446 INFO L132 encePairwiseOnDemand]: 75/86 looper letters, 96 selfloop transitions, 35 changer transitions 0/184 dead transitions. [2022-01-19 04:38:41,446 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 184 transitions, 1001 flow [2022-01-19 04:38:41,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 04:38:41,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 04:38:41,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 517 transitions. [2022-01-19 04:38:41,447 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8588039867109635 [2022-01-19 04:38:41,447 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 517 transitions. [2022-01-19 04:38:41,447 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 517 transitions. [2022-01-19 04:38:41,447 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 04:38:41,447 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 517 transitions. [2022-01-19 04:38:41,448 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 73.85714285714286) internal successors, (517), 7 states have internal predecessors, (517), 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) [2022-01-19 04:38:41,448 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 86.0) internal successors, (688), 8 states have internal predecessors, (688), 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) [2022-01-19 04:38:41,448 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 86.0) internal successors, (688), 8 states have internal predecessors, (688), 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) [2022-01-19 04:38:41,448 INFO L186 Difference]: Start difference. First operand has 96 places, 92 transitions, 305 flow. Second operand 7 states and 517 transitions. [2022-01-19 04:38:41,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 184 transitions, 1001 flow [2022-01-19 04:38:41,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 184 transitions, 949 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-01-19 04:38:41,635 INFO L242 Difference]: Finished difference. Result has 104 places, 119 transitions, 581 flow [2022-01-19 04:38:41,635 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=581, PETRI_PLACES=104, PETRI_TRANSITIONS=119} [2022-01-19 04:38:41,636 INFO L334 CegarLoopForPetriNet]: 96 programPoint places, 8 predicate places. [2022-01-19 04:38:41,636 INFO L470 AbstractCegarLoop]: Abstraction has has 104 places, 119 transitions, 581 flow [2022-01-19 04:38:41,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 60.2) internal successors, (301), 5 states have internal predecessors, (301), 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) [2022-01-19 04:38:41,636 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:38:41,636 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 04:38:41,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-01-19 04:38:41,636 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-19 04:38:41,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:38:41,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1097776560, now seen corresponding path program 2 times [2022-01-19 04:38:41,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:38:41,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582119496] [2022-01-19 04:38:41,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:38:41,637 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:38:41,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 04:38:41,656 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-19 04:38:41,656 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 04:38:41,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582119496] [2022-01-19 04:38:41,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582119496] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 04:38:41,656 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 04:38:41,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 04:38:41,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632348022] [2022-01-19 04:38:41,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 04:38:41,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 04:38:41,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 04:38:41,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 04:38:41,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-19 04:38:41,658 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 86 [2022-01-19 04:38:41,658 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 119 transitions, 581 flow. Second operand has 5 states, 5 states have (on average 60.2) internal successors, (301), 5 states have internal predecessors, (301), 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) [2022-01-19 04:38:41,658 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 04:38:41,658 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 86 [2022-01-19 04:38:41,658 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 04:38:44,585 INFO L129 PetriNetUnfolder]: 22143/38292 cut-off events. [2022-01-19 04:38:44,586 INFO L130 PetriNetUnfolder]: For 53053/53137 co-relation queries the response was YES. [2022-01-19 04:38:44,723 INFO L84 FinitePrefix]: Finished finitePrefix Result has 116107 conditions, 38292 events. 22143/38292 cut-off events. For 53053/53137 co-relation queries the response was YES. Maximal size of possible extension queue 2093. Compared 357213 event pairs, 5832 based on Foata normal form. 349/32668 useless extension candidates. Maximal degree in co-relation 67762. Up to 10158 conditions per place. [2022-01-19 04:38:44,944 INFO L132 encePairwiseOnDemand]: 75/86 looper letters, 94 selfloop transitions, 43 changer transitions 0/190 dead transitions. [2022-01-19 04:38:44,944 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 190 transitions, 1240 flow [2022-01-19 04:38:44,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-19 04:38:44,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-01-19 04:38:44,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 446 transitions. [2022-01-19 04:38:44,945 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8643410852713178 [2022-01-19 04:38:44,945 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 446 transitions. [2022-01-19 04:38:44,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 446 transitions. [2022-01-19 04:38:44,945 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 04:38:44,945 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 446 transitions. [2022-01-19 04:38:44,946 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 74.33333333333333) internal successors, (446), 6 states have internal predecessors, (446), 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) [2022-01-19 04:38:44,946 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 86.0) internal successors, (602), 7 states have internal predecessors, (602), 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) [2022-01-19 04:38:44,947 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 86.0) internal successors, (602), 7 states have internal predecessors, (602), 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) [2022-01-19 04:38:44,947 INFO L186 Difference]: Start difference. First operand has 104 places, 119 transitions, 581 flow. Second operand 6 states and 446 transitions. [2022-01-19 04:38:44,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 190 transitions, 1240 flow [2022-01-19 04:38:45,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 190 transitions, 1234 flow, removed 3 selfloop flow, removed 0 redundant places. [2022-01-19 04:38:45,090 INFO L242 Difference]: Finished difference. Result has 113 places, 135 transitions, 902 flow [2022-01-19 04:38:45,090 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=575, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=902, PETRI_PLACES=113, PETRI_TRANSITIONS=135} [2022-01-19 04:38:45,091 INFO L334 CegarLoopForPetriNet]: 96 programPoint places, 17 predicate places. [2022-01-19 04:38:45,091 INFO L470 AbstractCegarLoop]: Abstraction has has 113 places, 135 transitions, 902 flow [2022-01-19 04:38:45,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 60.2) internal successors, (301), 5 states have internal predecessors, (301), 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) [2022-01-19 04:38:45,091 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:38:45,091 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 04:38:45,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-01-19 04:38:45,091 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-19 04:38:45,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:38:45,091 INFO L85 PathProgramCache]: Analyzing trace with hash 2018012865, now seen corresponding path program 1 times [2022-01-19 04:38:45,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:38:45,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698168454] [2022-01-19 04:38:45,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:38:45,092 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:38:45,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 04:38:45,105 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-01-19 04:38:45,105 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 04:38:45,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698168454] [2022-01-19 04:38:45,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698168454] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 04:38:45,105 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 04:38:45,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-19 04:38:45,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62333154] [2022-01-19 04:38:45,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 04:38:45,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 04:38:45,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 04:38:45,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 04:38:45,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 04:38:45,108 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 86 [2022-01-19 04:38:45,108 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 135 transitions, 902 flow. Second operand has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 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) [2022-01-19 04:38:45,108 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 04:38:45,108 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 86 [2022-01-19 04:38:45,108 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 04:38:49,796 INFO L129 PetriNetUnfolder]: 31761/57095 cut-off events. [2022-01-19 04:38:49,796 INFO L130 PetriNetUnfolder]: For 196416/200546 co-relation queries the response was YES. [2022-01-19 04:38:50,117 INFO L84 FinitePrefix]: Finished finitePrefix Result has 199148 conditions, 57095 events. 31761/57095 cut-off events. For 196416/200546 co-relation queries the response was YES. Maximal size of possible extension queue 3391. Compared 592857 event pairs, 14416 based on Foata normal form. 510/49462 useless extension candidates. Maximal degree in co-relation 199069. Up to 34159 conditions per place. [2022-01-19 04:38:50,444 INFO L132 encePairwiseOnDemand]: 79/86 looper letters, 90 selfloop transitions, 45 changer transitions 0/193 dead transitions. [2022-01-19 04:38:50,444 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 193 transitions, 1764 flow [2022-01-19 04:38:50,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 04:38:50,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 04:38:50,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 220 transitions. [2022-01-19 04:38:50,445 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8527131782945736 [2022-01-19 04:38:50,445 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 220 transitions. [2022-01-19 04:38:50,445 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 220 transitions. [2022-01-19 04:38:50,445 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 04:38:50,445 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 220 transitions. [2022-01-19 04:38:50,446 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 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) [2022-01-19 04:38:50,446 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 86.0) internal successors, (344), 4 states have internal predecessors, (344), 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) [2022-01-19 04:38:50,446 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 86.0) internal successors, (344), 4 states have internal predecessors, (344), 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) [2022-01-19 04:38:50,446 INFO L186 Difference]: Start difference. First operand has 113 places, 135 transitions, 902 flow. Second operand 3 states and 220 transitions. [2022-01-19 04:38:50,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 193 transitions, 1764 flow [2022-01-19 04:38:51,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 193 transitions, 1740 flow, removed 12 selfloop flow, removed 0 redundant places. [2022-01-19 04:38:51,172 INFO L242 Difference]: Finished difference. Result has 117 places, 169 transitions, 1534 flow [2022-01-19 04:38:51,172 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=890, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1534, PETRI_PLACES=117, PETRI_TRANSITIONS=169} [2022-01-19 04:38:51,173 INFO L334 CegarLoopForPetriNet]: 96 programPoint places, 21 predicate places. [2022-01-19 04:38:51,173 INFO L470 AbstractCegarLoop]: Abstraction has has 117 places, 169 transitions, 1534 flow [2022-01-19 04:38:51,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 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) [2022-01-19 04:38:51,173 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:38:51,173 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 04:38:51,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-01-19 04:38:51,173 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-19 04:38:51,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:38:51,173 INFO L85 PathProgramCache]: Analyzing trace with hash 2050136410, now seen corresponding path program 1 times [2022-01-19 04:38:51,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:38:51,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198042449] [2022-01-19 04:38:51,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:38:51,174 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:38:51,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 04:38:51,208 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-01-19 04:38:51,208 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 04:38:51,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198042449] [2022-01-19 04:38:51,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198042449] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 04:38:51,208 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 04:38:51,208 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 04:38:51,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376562414] [2022-01-19 04:38:51,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 04:38:51,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 04:38:51,209 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 04:38:51,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 04:38:51,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-19 04:38:51,210 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 86 [2022-01-19 04:38:51,210 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 169 transitions, 1534 flow. Second operand has 5 states, 5 states have (on average 60.4) internal successors, (302), 5 states have internal predecessors, (302), 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) [2022-01-19 04:38:51,210 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 04:38:51,210 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 86 [2022-01-19 04:38:51,210 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 04:39:00,264 INFO L129 PetriNetUnfolder]: 55520/100801 cut-off events. [2022-01-19 04:39:00,265 INFO L130 PetriNetUnfolder]: For 406541/504997 co-relation queries the response was YES. [2022-01-19 04:39:00,968 INFO L84 FinitePrefix]: Finished finitePrefix Result has 385956 conditions, 100801 events. 55520/100801 cut-off events. For 406541/504997 co-relation queries the response was YES. Maximal size of possible extension queue 5421. Compared 1117762 event pairs, 11937 based on Foata normal form. 2453/91455 useless extension candidates. Maximal degree in co-relation 385857. Up to 26560 conditions per place. [2022-01-19 04:39:01,780 INFO L132 encePairwiseOnDemand]: 75/86 looper letters, 170 selfloop transitions, 155 changer transitions 0/380 dead transitions. [2022-01-19 04:39:01,780 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 380 transitions, 4560 flow [2022-01-19 04:39:01,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 04:39:01,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 04:39:01,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 511 transitions. [2022-01-19 04:39:01,781 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8488372093023255 [2022-01-19 04:39:01,781 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 511 transitions. [2022-01-19 04:39:01,781 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 511 transitions. [2022-01-19 04:39:01,781 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 04:39:01,781 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 511 transitions. [2022-01-19 04:39:01,781 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 73.0) internal successors, (511), 7 states have internal predecessors, (511), 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) [2022-01-19 04:39:01,782 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 86.0) internal successors, (688), 8 states have internal predecessors, (688), 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) [2022-01-19 04:39:01,782 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 86.0) internal successors, (688), 8 states have internal predecessors, (688), 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) [2022-01-19 04:39:01,782 INFO L186 Difference]: Start difference. First operand has 117 places, 169 transitions, 1534 flow. Second operand 7 states and 511 transitions. [2022-01-19 04:39:01,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 380 transitions, 4560 flow [2022-01-19 04:39:04,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 380 transitions, 4354 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-01-19 04:39:04,924 INFO L242 Difference]: Finished difference. Result has 125 places, 285 transitions, 3636 flow [2022-01-19 04:39:04,924 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=1444, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3636, PETRI_PLACES=125, PETRI_TRANSITIONS=285} [2022-01-19 04:39:04,924 INFO L334 CegarLoopForPetriNet]: 96 programPoint places, 29 predicate places. [2022-01-19 04:39:04,924 INFO L470 AbstractCegarLoop]: Abstraction has has 125 places, 285 transitions, 3636 flow [2022-01-19 04:39:04,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 60.4) internal successors, (302), 5 states have internal predecessors, (302), 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) [2022-01-19 04:39:04,924 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:39:04,924 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 04:39:04,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-01-19 04:39:04,925 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-19 04:39:04,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:39:04,925 INFO L85 PathProgramCache]: Analyzing trace with hash 2772984, now seen corresponding path program 2 times [2022-01-19 04:39:04,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:39:04,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114016590] [2022-01-19 04:39:04,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:39:04,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:39:04,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 04:39:04,959 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-01-19 04:39:04,959 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 04:39:04,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114016590] [2022-01-19 04:39:04,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114016590] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 04:39:04,959 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 04:39:04,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 04:39:04,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986978928] [2022-01-19 04:39:04,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 04:39:04,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 04:39:04,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 04:39:04,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 04:39:04,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-19 04:39:04,960 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 86 [2022-01-19 04:39:04,961 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 285 transitions, 3636 flow. Second operand has 5 states, 5 states have (on average 60.4) internal successors, (302), 5 states have internal predecessors, (302), 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) [2022-01-19 04:39:04,961 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 04:39:04,961 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 86 [2022-01-19 04:39:04,961 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 04:39:15,725 INFO L129 PetriNetUnfolder]: 56022/103403 cut-off events. [2022-01-19 04:39:15,725 INFO L130 PetriNetUnfolder]: For 521285/538930 co-relation queries the response was YES. [2022-01-19 04:39:16,523 INFO L84 FinitePrefix]: Finished finitePrefix Result has 433914 conditions, 103403 events. 56022/103403 cut-off events. For 521285/538930 co-relation queries the response was YES. Maximal size of possible extension queue 5693. Compared 1173975 event pairs, 9802 based on Foata normal form. 1704/93205 useless extension candidates. Maximal degree in co-relation 433809. Up to 27805 conditions per place. [2022-01-19 04:39:17,292 INFO L132 encePairwiseOnDemand]: 75/86 looper letters, 156 selfloop transitions, 199 changer transitions 0/410 dead transitions. [2022-01-19 04:39:17,292 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 410 transitions, 5763 flow [2022-01-19 04:39:17,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-19 04:39:17,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-01-19 04:39:17,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 443 transitions. [2022-01-19 04:39:17,293 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8585271317829457 [2022-01-19 04:39:17,293 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 443 transitions. [2022-01-19 04:39:17,293 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 443 transitions. [2022-01-19 04:39:17,293 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 04:39:17,293 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 443 transitions. [2022-01-19 04:39:17,294 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 73.83333333333333) internal successors, (443), 6 states have internal predecessors, (443), 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) [2022-01-19 04:39:17,294 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 86.0) internal successors, (602), 7 states have internal predecessors, (602), 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) [2022-01-19 04:39:17,294 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 86.0) internal successors, (602), 7 states have internal predecessors, (602), 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) [2022-01-19 04:39:17,294 INFO L186 Difference]: Start difference. First operand has 125 places, 285 transitions, 3636 flow. Second operand 6 states and 443 transitions. [2022-01-19 04:39:17,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 410 transitions, 5763 flow [2022-01-19 04:39:21,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 410 transitions, 5731 flow, removed 16 selfloop flow, removed 0 redundant places. [2022-01-19 04:39:21,751 INFO L242 Difference]: Finished difference. Result has 134 places, 341 transitions, 5353 flow [2022-01-19 04:39:21,752 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=3604, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5353, PETRI_PLACES=134, PETRI_TRANSITIONS=341} [2022-01-19 04:39:21,752 INFO L334 CegarLoopForPetriNet]: 96 programPoint places, 38 predicate places. [2022-01-19 04:39:21,752 INFO L470 AbstractCegarLoop]: Abstraction has has 134 places, 341 transitions, 5353 flow [2022-01-19 04:39:21,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 60.4) internal successors, (302), 5 states have internal predecessors, (302), 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) [2022-01-19 04:39:21,752 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:39:21,752 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 04:39:21,752 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-01-19 04:39:21,752 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-19 04:39:21,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:39:21,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1220965776, now seen corresponding path program 1 times [2022-01-19 04:39:21,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:39:21,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977189922] [2022-01-19 04:39:21,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:39:21,753 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:39:21,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 04:39:21,769 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-01-19 04:39:21,770 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 04:39:21,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977189922] [2022-01-19 04:39:21,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977189922] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 04:39:21,770 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 04:39:21,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 04:39:21,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062240270] [2022-01-19 04:39:21,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 04:39:21,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 04:39:21,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 04:39:21,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 04:39:21,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-19 04:39:21,771 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 86 [2022-01-19 04:39:21,771 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 341 transitions, 5353 flow. Second operand has 5 states, 5 states have (on average 60.4) internal successors, (302), 5 states have internal predecessors, (302), 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) [2022-01-19 04:39:21,771 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 04:39:21,771 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 86 [2022-01-19 04:39:21,771 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 04:39:39,332 INFO L129 PetriNetUnfolder]: 82744/155515 cut-off events. [2022-01-19 04:39:39,332 INFO L130 PetriNetUnfolder]: For 1024456/1025744 co-relation queries the response was YES. [2022-01-19 04:39:40,698 INFO L84 FinitePrefix]: Finished finitePrefix Result has 718323 conditions, 155515 events. 82744/155515 cut-off events. For 1024456/1025744 co-relation queries the response was YES. Maximal size of possible extension queue 8694. Compared 1883604 event pairs, 11929 based on Foata normal form. 1056/139420 useless extension candidates. Maximal degree in co-relation 718229. Up to 43257 conditions per place. [2022-01-19 04:39:41,815 INFO L132 encePairwiseOnDemand]: 75/86 looper letters, 304 selfloop transitions, 263 changer transitions 0/623 dead transitions. [2022-01-19 04:39:41,815 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 623 transitions, 10736 flow [2022-01-19 04:39:41,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 04:39:41,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 04:39:41,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 509 transitions. [2022-01-19 04:39:41,816 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.845514950166113 [2022-01-19 04:39:41,816 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 509 transitions. [2022-01-19 04:39:41,816 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 509 transitions. [2022-01-19 04:39:41,816 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 04:39:41,816 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 509 transitions. [2022-01-19 04:39:41,817 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 72.71428571428571) internal successors, (509), 7 states have internal predecessors, (509), 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) [2022-01-19 04:39:41,817 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 86.0) internal successors, (688), 8 states have internal predecessors, (688), 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) [2022-01-19 04:39:41,817 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 86.0) internal successors, (688), 8 states have internal predecessors, (688), 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) [2022-01-19 04:39:41,818 INFO L186 Difference]: Start difference. First operand has 134 places, 341 transitions, 5353 flow. Second operand 7 states and 509 transitions. [2022-01-19 04:39:41,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 623 transitions, 10736 flow [2022-01-19 04:40:06,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 623 transitions, 10672 flow, removed 32 selfloop flow, removed 0 redundant places. [2022-01-19 04:40:06,133 INFO L242 Difference]: Finished difference. Result has 144 places, 505 transitions, 9239 flow [2022-01-19 04:40:06,133 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=5327, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9239, PETRI_PLACES=144, PETRI_TRANSITIONS=505} [2022-01-19 04:40:06,133 INFO L334 CegarLoopForPetriNet]: 96 programPoint places, 48 predicate places. [2022-01-19 04:40:06,134 INFO L470 AbstractCegarLoop]: Abstraction has has 144 places, 505 transitions, 9239 flow [2022-01-19 04:40:06,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 60.4) internal successors, (302), 5 states have internal predecessors, (302), 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) [2022-01-19 04:40:06,134 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:40:06,134 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 04:40:06,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-01-19 04:40:06,134 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-19 04:40:06,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:40:06,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1092939152, now seen corresponding path program 2 times [2022-01-19 04:40:06,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:40:06,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20008975] [2022-01-19 04:40:06,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:40:06,135 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:40:06,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 04:40:06,163 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-01-19 04:40:06,164 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 04:40:06,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20008975] [2022-01-19 04:40:06,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20008975] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 04:40:06,164 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 04:40:06,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 04:40:06,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486017227] [2022-01-19 04:40:06,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 04:40:06,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 04:40:06,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 04:40:06,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 04:40:06,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-19 04:40:06,165 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 86 [2022-01-19 04:40:06,165 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 505 transitions, 9239 flow. Second operand has 5 states, 5 states have (on average 60.4) internal successors, (302), 5 states have internal predecessors, (302), 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) [2022-01-19 04:40:06,165 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 04:40:06,165 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 86 [2022-01-19 04:40:06,166 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 04:40:29,028 INFO L129 PetriNetUnfolder]: 84438/163090 cut-off events. [2022-01-19 04:40:29,028 INFO L130 PetriNetUnfolder]: For 1360124/1362958 co-relation queries the response was YES. [2022-01-19 04:40:30,828 INFO L84 FinitePrefix]: Finished finitePrefix Result has 812959 conditions, 163090 events. 84438/163090 cut-off events. For 1360124/1362958 co-relation queries the response was YES. Maximal size of possible extension queue 9289. Compared 2048016 event pairs, 16446 based on Foata normal form. 1193/145892 useless extension candidates. Maximal degree in co-relation 812860. Up to 40733 conditions per place. [2022-01-19 04:40:32,021 INFO L132 encePairwiseOnDemand]: 75/86 looper letters, 318 selfloop transitions, 318 changer transitions 0/692 dead transitions. [2022-01-19 04:40:32,021 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 692 transitions, 13535 flow [2022-01-19 04:40:32,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-19 04:40:32,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-01-19 04:40:32,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 440 transitions. [2022-01-19 04:40:32,022 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8527131782945736 [2022-01-19 04:40:32,022 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 440 transitions. [2022-01-19 04:40:32,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 440 transitions. [2022-01-19 04:40:32,022 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 04:40:32,023 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 440 transitions. [2022-01-19 04:40:32,023 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 73.33333333333333) internal successors, (440), 6 states have internal predecessors, (440), 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) [2022-01-19 04:40:32,024 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 86.0) internal successors, (602), 7 states have internal predecessors, (602), 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) [2022-01-19 04:40:32,024 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 86.0) internal successors, (602), 7 states have internal predecessors, (602), 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) [2022-01-19 04:40:32,024 INFO L186 Difference]: Start difference. First operand has 144 places, 505 transitions, 9239 flow. Second operand 6 states and 440 transitions. [2022-01-19 04:40:32,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 692 transitions, 13535 flow [2022-01-19 04:40:51,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 692 transitions, 13517 flow, removed 9 selfloop flow, removed 0 redundant places. [2022-01-19 04:40:51,683 INFO L242 Difference]: Finished difference. Result has 153 places, 594 transitions, 12323 flow [2022-01-19 04:40:51,684 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=9221, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=505, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=234, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=12323, PETRI_PLACES=153, PETRI_TRANSITIONS=594} [2022-01-19 04:40:51,684 INFO L334 CegarLoopForPetriNet]: 96 programPoint places, 57 predicate places. [2022-01-19 04:40:51,684 INFO L470 AbstractCegarLoop]: Abstraction has has 153 places, 594 transitions, 12323 flow [2022-01-19 04:40:51,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 60.4) internal successors, (302), 5 states have internal predecessors, (302), 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) [2022-01-19 04:40:51,684 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:40:51,684 INFO L254 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 04:40:51,685 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-01-19 04:40:51,685 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-19 04:40:51,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:40:51,685 INFO L85 PathProgramCache]: Analyzing trace with hash 248099206, now seen corresponding path program 1 times [2022-01-19 04:40:51,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:40:51,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573629484] [2022-01-19 04:40:51,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:40:51,685 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:40:51,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 04:40:51,704 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-01-19 04:40:51,704 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 04:40:51,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573629484] [2022-01-19 04:40:51,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573629484] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 04:40:51,704 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 04:40:51,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-19 04:40:51,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251286193] [2022-01-19 04:40:51,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 04:40:51,704 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 04:40:51,704 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 04:40:51,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 04:40:51,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 04:40:51,705 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 86 [2022-01-19 04:40:51,705 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 594 transitions, 12323 flow. Second operand has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 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) [2022-01-19 04:40:51,705 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 04:40:51,705 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 86 [2022-01-19 04:40:51,705 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 04:41:30,851 INFO L129 PetriNetUnfolder]: 122175/244004 cut-off events. [2022-01-19 04:41:30,855 INFO L130 PetriNetUnfolder]: For 3132205/3237758 co-relation queries the response was YES. [2022-01-19 04:41:33,736 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1319960 conditions, 244004 events. 122175/244004 cut-off events. For 3132205/3237758 co-relation queries the response was YES. Maximal size of possible extension queue 14449. Compared 3335588 event pairs, 47621 based on Foata normal form. 2827/219691 useless extension candidates. Maximal degree in co-relation 1319856. Up to 135117 conditions per place. [2022-01-19 04:41:35,859 INFO L132 encePairwiseOnDemand]: 79/86 looper letters, 504 selfloop transitions, 396 changer transitions 0/971 dead transitions. [2022-01-19 04:41:35,860 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 971 transitions, 22448 flow [2022-01-19 04:41:35,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 04:41:35,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 04:41:35,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 219 transitions. [2022-01-19 04:41:35,860 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8488372093023255 [2022-01-19 04:41:35,861 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 219 transitions. [2022-01-19 04:41:35,861 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 219 transitions. [2022-01-19 04:41:35,861 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 04:41:35,861 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 219 transitions. [2022-01-19 04:41:35,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 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) [2022-01-19 04:41:35,861 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 86.0) internal successors, (344), 4 states have internal predecessors, (344), 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) [2022-01-19 04:41:35,861 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 86.0) internal successors, (344), 4 states have internal predecessors, (344), 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) [2022-01-19 04:41:35,862 INFO L186 Difference]: Start difference. First operand has 153 places, 594 transitions, 12323 flow. Second operand 3 states and 219 transitions. [2022-01-19 04:41:35,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 971 transitions, 22448 flow [2022-01-19 04:42:41,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 971 transitions, 22312 flow, removed 68 selfloop flow, removed 0 redundant places. [2022-01-19 04:42:41,106 INFO L242 Difference]: Finished difference. Result has 157 places, 853 transitions, 20861 flow [2022-01-19 04:42:41,107 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=12255, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=594, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=20861, PETRI_PLACES=157, PETRI_TRANSITIONS=853} [2022-01-19 04:42:41,107 INFO L334 CegarLoopForPetriNet]: 96 programPoint places, 61 predicate places. [2022-01-19 04:42:41,107 INFO L470 AbstractCegarLoop]: Abstraction has has 157 places, 853 transitions, 20861 flow [2022-01-19 04:42:41,107 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 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) [2022-01-19 04:42:41,107 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:42:41,107 INFO L254 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 04:42:41,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-01-19 04:42:41,108 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-19 04:42:41,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:42:41,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1553720405, now seen corresponding path program 1 times [2022-01-19 04:42:41,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:42:41,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766269660] [2022-01-19 04:42:41,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:42:41,108 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:42:41,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 04:42:41,130 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-01-19 04:42:41,130 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 04:42:41,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766269660] [2022-01-19 04:42:41,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766269660] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 04:42:41,131 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 04:42:41,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 04:42:41,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585762091] [2022-01-19 04:42:41,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 04:42:41,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 04:42:41,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 04:42:41,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 04:42:41,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-19 04:42:41,134 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 86 [2022-01-19 04:42:41,134 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 853 transitions, 20861 flow. Second operand has 5 states, 5 states have (on average 60.6) internal successors, (303), 5 states have internal predecessors, (303), 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) [2022-01-19 04:42:41,134 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 04:42:41,134 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 86 [2022-01-19 04:42:41,134 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand