/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/48_ticket_lock_low_contention_vs.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bf34d27 [2022-01-19 04:38:08,057 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-19 04:38:08,059 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-19 04:38:08,120 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-19 04:38:08,121 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-19 04:38:08,123 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-19 04:38:08,125 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-19 04:38:08,128 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-19 04:38:08,129 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-19 04:38:08,133 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-19 04:38:08,134 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-19 04:38:08,135 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-19 04:38:08,136 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-19 04:38:08,137 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-19 04:38:08,138 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-19 04:38:08,141 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-19 04:38:08,141 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-19 04:38:08,142 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-19 04:38:08,148 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-19 04:38:08,153 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-19 04:38:08,154 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-19 04:38:08,155 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-19 04:38:08,157 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-19 04:38:08,158 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-19 04:38:08,159 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-19 04:38:08,160 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-19 04:38:08,160 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-19 04:38:08,161 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-19 04:38:08,161 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-19 04:38:08,162 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-19 04:38:08,162 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-19 04:38:08,162 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-19 04:38:08,163 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-19 04:38:08,163 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-19 04:38:08,164 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-19 04:38:08,164 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-19 04:38:08,165 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-19 04:38:08,165 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-19 04:38:08,165 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-19 04:38:08,166 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-19 04:38:08,166 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-19 04:38:08,167 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 04:38:08,196 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-19 04:38:08,197 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-19 04:38:08,198 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-19 04:38:08,198 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-19 04:38:08,198 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-19 04:38:08,198 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-19 04:38:08,199 INFO L138 SettingsManager]: * Use SBE=true [2022-01-19 04:38:08,199 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-19 04:38:08,199 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-19 04:38:08,199 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-19 04:38:08,200 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-19 04:38:08,200 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-19 04:38:08,200 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-19 04:38:08,200 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-19 04:38:08,200 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-19 04:38:08,200 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-19 04:38:08,200 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-19 04:38:08,201 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-19 04:38:08,201 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-19 04:38:08,201 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-19 04:38:08,201 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-19 04:38:08,201 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-19 04:38:08,201 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-19 04:38:08,201 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 04:38:08,201 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-19 04:38:08,202 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-19 04:38:08,202 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-19 04:38:08,202 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-19 04:38:08,202 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-19 04:38:08,202 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-19 04:38:08,202 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-19 04:38:08,202 INFO L138 SettingsManager]: * When to check the insufficient erros location relative to the other error locations=BEFORE [2022-01-19 04:38:08,202 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-19 04:38:08,427 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-19 04:38:08,445 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-19 04:38:08,448 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-19 04:38:08,449 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-19 04:38:08,450 INFO L275 PluginConnector]: CDTParser initialized [2022-01-19 04:38:08,451 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/48_ticket_lock_low_contention_vs.i [2022-01-19 04:38:08,508 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2bc0ef4cd/4c3cdebf32df4f23aaa1f222052c0410/FLAGa74ea97c7 [2022-01-19 04:38:08,912 INFO L306 CDTParser]: Found 1 translation units. [2022-01-19 04:38:08,913 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/48_ticket_lock_low_contention_vs.i [2022-01-19 04:38:08,928 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2bc0ef4cd/4c3cdebf32df4f23aaa1f222052c0410/FLAGa74ea97c7 [2022-01-19 04:38:09,284 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2bc0ef4cd/4c3cdebf32df4f23aaa1f222052c0410 [2022-01-19 04:38:09,286 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-19 04:38:09,287 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-19 04:38:09,291 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-19 04:38:09,292 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-19 04:38:09,294 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-19 04:38:09,295 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 04:38:09" (1/1) ... [2022-01-19 04:38:09,295 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2aee078c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 04:38:09, skipping insertion in model container [2022-01-19 04:38:09,296 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 04:38:09" (1/1) ... [2022-01-19 04:38:09,311 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-19 04:38:09,338 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-19 04:38:09,488 WARN L610 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-01-19 04:38:09,636 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/48_ticket_lock_low_contention_vs.i[30893,30906] [2022-01-19 04:38:09,650 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 04:38:09,658 INFO L203 MainTranslator]: Completed pre-run [2022-01-19 04:38:09,685 WARN L610 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-01-19 04:38:09,713 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/48_ticket_lock_low_contention_vs.i[30893,30906] [2022-01-19 04:38:09,717 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 04:38:09,750 INFO L208 MainTranslator]: Completed translation [2022-01-19 04:38:09,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 04:38:09 WrapperNode [2022-01-19 04:38:09,751 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-19 04:38:09,751 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-19 04:38:09,751 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-19 04:38:09,752 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-19 04:38:09,758 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 04:38:09" (1/1) ... [2022-01-19 04:38:09,779 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 04:38:09" (1/1) ... [2022-01-19 04:38:09,798 INFO L137 Inliner]: procedures = 173, calls = 24, calls flagged for inlining = 5, calls inlined = 7, statements flattened = 108 [2022-01-19 04:38:09,798 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-19 04:38:09,799 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-19 04:38:09,799 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-19 04:38:09,799 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-19 04:38:09,807 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 04:38:09" (1/1) ... [2022-01-19 04:38:09,808 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 04:38:09" (1/1) ... [2022-01-19 04:38:09,823 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 04:38:09" (1/1) ... [2022-01-19 04:38:09,824 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 04:38:09" (1/1) ... [2022-01-19 04:38:09,829 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 04:38:09" (1/1) ... [2022-01-19 04:38:09,833 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 04:38:09" (1/1) ... [2022-01-19 04:38:09,835 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 04:38:09" (1/1) ... [2022-01-19 04:38:09,849 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-19 04:38:09,849 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-19 04:38:09,850 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-19 04:38:09,850 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-19 04:38:09,862 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 04:38:09" (1/1) ... [2022-01-19 04:38:09,868 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 04:38:09,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 04:38:09,897 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 04:38:09,918 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 04:38:09,935 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-19 04:38:09,935 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-01-19 04:38:09,935 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-01-19 04:38:09,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-19 04:38:09,936 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-01-19 04:38:09,936 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-19 04:38:09,936 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-19 04:38:09,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-19 04:38:09,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-19 04:38:09,936 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-19 04:38:09,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-19 04:38:09,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-19 04:38:09,938 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 04:38:10,023 INFO L234 CfgBuilder]: Building ICFG [2022-01-19 04:38:10,025 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-19 04:38:10,225 INFO L275 CfgBuilder]: Performing block encoding [2022-01-19 04:38:10,288 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-19 04:38:10,288 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-01-19 04:38:10,290 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 04:38:10 BoogieIcfgContainer [2022-01-19 04:38:10,290 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-19 04:38:10,291 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-19 04:38:10,291 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-19 04:38:10,294 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-19 04:38:10,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.01 04:38:09" (1/3) ... [2022-01-19 04:38:10,295 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a5e99f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 04:38:10, skipping insertion in model container [2022-01-19 04:38:10,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 04:38:09" (2/3) ... [2022-01-19 04:38:10,295 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a5e99f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 04:38:10, skipping insertion in model container [2022-01-19 04:38:10,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 04:38:10" (3/3) ... [2022-01-19 04:38:10,297 INFO L111 eAbstractionObserver]: Analyzing ICFG 48_ticket_lock_low_contention_vs.i [2022-01-19 04:38:10,301 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-19 04:38:10,301 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-19 04:38:10,301 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-19 04:38:10,338 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:10,338 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:10,338 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:10,339 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:10,339 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:10,339 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:10,339 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:10,339 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:10,339 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~#l~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:10,340 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~#l~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:10,340 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~#l~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:10,340 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~#l~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:10,341 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~#l~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:10,341 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~#l~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:10,341 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_fetch_and_inc_~l#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:10,341 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_fetch_and_inc_~l#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:10,341 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_fetch_and_inc_#in~l#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:10,341 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:10,342 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_fetch_and_inc_#in~l#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:10,342 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:10,342 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~#l~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:10,342 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~#l~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:10,343 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_fetch_and_inc_~l#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:10,343 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_fetch_and_inc_~l#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:10,343 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_fetch_and_inc_#in~l#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:10,343 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:10,344 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_fetch_and_inc_#in~l#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:10,344 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:10,344 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~#l~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:10,345 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~#l~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:10,345 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:10,345 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~#l~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:10,345 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~#l~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:10,345 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:10,345 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~#l~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:10,346 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~#l~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:10,346 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:10,346 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~#l~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:10,346 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~#l~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:10,346 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:10,347 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:10,347 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:10,348 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:10,348 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:10,348 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:10,348 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:10,348 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~#l~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:10,348 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~#l~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:10,348 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~#l~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:10,349 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~#l~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:10,349 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~#l~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:10,349 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~#l~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:10,352 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:10,352 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:10,352 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_fetch_and_inc_~l#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:10,352 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_fetch_and_inc_#in~l#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:10,352 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:10,352 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:10,353 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_fetch_and_inc_~l#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:10,353 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:10,353 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~#l~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:10,353 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_fetch_and_inc_#in~l#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:10,353 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:10,353 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~#l~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:10,353 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:10,354 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:10,354 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-01-19 04:38:10,393 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-19 04:38:10,399 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 04:38:10,399 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-19 04:38:10,408 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 73 places, 75 transitions, 155 flow [2022-01-19 04:38:10,445 INFO L129 PetriNetUnfolder]: 8/113 cut-off events. [2022-01-19 04:38:10,451 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-01-19 04:38:10,455 INFO L84 FinitePrefix]: Finished finitePrefix Result has 118 conditions, 113 events. 8/113 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 208 event pairs, 0 based on Foata normal form. 0/100 useless extension candidates. Maximal degree in co-relation 57. Up to 4 conditions per place. [2022-01-19 04:38:10,455 INFO L82 GeneralOperation]: Start removeDead. Operand has 73 places, 75 transitions, 155 flow [2022-01-19 04:38:10,459 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 73 places, 75 transitions, 155 flow [2022-01-19 04:38:10,470 INFO L129 PetriNetUnfolder]: 5/56 cut-off events. [2022-01-19 04:38:10,470 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-01-19 04:38:10,471 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:38:10,471 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] [2022-01-19 04:38:10,472 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-19 04:38:10,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:38:10,476 INFO L85 PathProgramCache]: Analyzing trace with hash 24858482, now seen corresponding path program 1 times [2022-01-19 04:38:10,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:38:10,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935105662] [2022-01-19 04:38:10,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:38:10,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:38:10,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 04:38:10,625 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 04:38:10,625 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 04:38:10,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935105662] [2022-01-19 04:38:10,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935105662] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 04:38:10,626 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 04:38:10,627 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-19 04:38:10,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931029509] [2022-01-19 04:38:10,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 04:38:10,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-19 04:38:10,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 04:38:10,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-19 04:38:10,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-19 04:38:10,655 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 75 [2022-01-19 04:38:10,657 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 75 transitions, 155 flow. Second operand has 2 states, 2 states have (on average 62.5) internal successors, (125), 2 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 04:38:10,658 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 04:38:10,658 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 75 [2022-01-19 04:38:10,659 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 04:38:10,710 INFO L129 PetriNetUnfolder]: 18/173 cut-off events. [2022-01-19 04:38:10,710 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-01-19 04:38:10,711 INFO L84 FinitePrefix]: Finished finitePrefix Result has 216 conditions, 173 events. 18/173 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 505 event pairs, 9 based on Foata normal form. 13/164 useless extension candidates. Maximal degree in co-relation 152. Up to 38 conditions per place. [2022-01-19 04:38:10,713 INFO L132 encePairwiseOnDemand]: 72/75 looper letters, 9 selfloop transitions, 0 changer transitions 0/70 dead transitions. [2022-01-19 04:38:10,713 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 70 transitions, 163 flow [2022-01-19 04:38:10,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-19 04:38:10,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-01-19 04:38:10,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 134 transitions. [2022-01-19 04:38:10,723 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8933333333333333 [2022-01-19 04:38:10,724 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 134 transitions. [2022-01-19 04:38:10,724 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 134 transitions. [2022-01-19 04:38:10,725 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 04:38:10,727 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 134 transitions. [2022-01-19 04:38:10,729 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 67.0) internal successors, (134), 2 states have internal predecessors, (134), 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 04:38:10,732 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 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 04:38:10,732 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 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 04:38:10,734 INFO L186 Difference]: Start difference. First operand has 73 places, 75 transitions, 155 flow. Second operand 2 states and 134 transitions. [2022-01-19 04:38:10,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 70 transitions, 163 flow [2022-01-19 04:38:10,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 70 transitions, 163 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-01-19 04:38:10,739 INFO L242 Difference]: Finished difference. Result has 72 places, 70 transitions, 145 flow [2022-01-19 04:38:10,741 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=145, PETRI_PLACES=72, PETRI_TRANSITIONS=70} [2022-01-19 04:38:10,744 INFO L334 CegarLoopForPetriNet]: 73 programPoint places, -1 predicate places. [2022-01-19 04:38:10,745 INFO L470 AbstractCegarLoop]: Abstraction has has 72 places, 70 transitions, 145 flow [2022-01-19 04:38:10,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 62.5) internal successors, (125), 2 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 04:38:10,745 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:38:10,745 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 04:38:10,745 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-19 04:38:10,746 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-19 04:38:10,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:38:10,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1969669199, now seen corresponding path program 1 times [2022-01-19 04:38:10,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:38:10,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641709335] [2022-01-19 04:38:10,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:38:10,747 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:38:10,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 04:38:10,835 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 04:38:10,835 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 04:38:10,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641709335] [2022-01-19 04:38:10,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641709335] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 04:38:10,836 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 04:38:10,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-19 04:38:10,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742566979] [2022-01-19 04:38:10,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 04:38:10,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 04:38:10,838 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 04:38:10,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 04:38:10,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 04:38:10,840 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 75 [2022-01-19 04:38:10,840 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 70 transitions, 145 flow. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 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 04:38:10,840 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 04:38:10,840 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 75 [2022-01-19 04:38:10,841 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 04:38:10,957 INFO L129 PetriNetUnfolder]: 57/289 cut-off events. [2022-01-19 04:38:10,958 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-01-19 04:38:10,959 INFO L84 FinitePrefix]: Finished finitePrefix Result has 421 conditions, 289 events. 57/289 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1140 event pairs, 20 based on Foata normal form. 0/263 useless extension candidates. Maximal degree in co-relation 417. Up to 80 conditions per place. [2022-01-19 04:38:10,960 INFO L132 encePairwiseOnDemand]: 69/75 looper letters, 22 selfloop transitions, 4 changer transitions 6/84 dead transitions. [2022-01-19 04:38:10,960 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 84 transitions, 237 flow [2022-01-19 04:38:10,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 04:38:10,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 04:38:10,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 190 transitions. [2022-01-19 04:38:10,969 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8444444444444444 [2022-01-19 04:38:10,969 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 190 transitions. [2022-01-19 04:38:10,969 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 190 transitions. [2022-01-19 04:38:10,970 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 04:38:10,970 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 190 transitions. [2022-01-19 04:38:10,971 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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 04:38:10,972 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 04:38:10,973 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 04:38:10,973 INFO L186 Difference]: Start difference. First operand has 72 places, 70 transitions, 145 flow. Second operand 3 states and 190 transitions. [2022-01-19 04:38:10,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 84 transitions, 237 flow [2022-01-19 04:38:10,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 84 transitions, 237 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-01-19 04:38:10,976 INFO L242 Difference]: Finished difference. Result has 76 places, 72 transitions, 173 flow [2022-01-19 04:38:10,976 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=173, PETRI_PLACES=76, PETRI_TRANSITIONS=72} [2022-01-19 04:38:10,977 INFO L334 CegarLoopForPetriNet]: 73 programPoint places, 3 predicate places. [2022-01-19 04:38:10,977 INFO L470 AbstractCegarLoop]: Abstraction has has 76 places, 72 transitions, 173 flow [2022-01-19 04:38:10,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 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 04:38:10,977 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:38:10,978 INFO L254 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 04:38:10,978 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-19 04:38:10,978 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-19 04:38:10,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:38:10,979 INFO L85 PathProgramCache]: Analyzing trace with hash 2072660610, now seen corresponding path program 1 times [2022-01-19 04:38:10,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:38:10,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283745933] [2022-01-19 04:38:10,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:38:10,979 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:38:11,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 04:38:11,188 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-19 04:38:11,189 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 04:38:11,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283745933] [2022-01-19 04:38:11,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283745933] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 04:38:11,190 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 04:38:11,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-19 04:38:11,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964771673] [2022-01-19 04:38:11,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 04:38:11,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-19 04:38:11,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 04:38:11,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-19 04:38:11,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-19 04:38:11,195 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 75 [2022-01-19 04:38:11,196 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 72 transitions, 173 flow. Second operand has 6 states, 6 states have (on average 54.833333333333336) internal successors, (329), 6 states have internal predecessors, (329), 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 04:38:11,196 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 04:38:11,196 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 75 [2022-01-19 04:38:11,196 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 04:38:11,343 INFO L129 PetriNetUnfolder]: 43/237 cut-off events. [2022-01-19 04:38:11,343 INFO L130 PetriNetUnfolder]: For 27/29 co-relation queries the response was YES. [2022-01-19 04:38:11,346 INFO L84 FinitePrefix]: Finished finitePrefix Result has 396 conditions, 237 events. 43/237 cut-off events. For 27/29 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 898 event pairs, 6 based on Foata normal form. 0/215 useless extension candidates. Maximal degree in co-relation 390. Up to 48 conditions per place. [2022-01-19 04:38:11,347 INFO L132 encePairwiseOnDemand]: 68/75 looper letters, 13 selfloop transitions, 6 changer transitions 23/96 dead transitions. [2022-01-19 04:38:11,348 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 96 transitions, 303 flow [2022-01-19 04:38:11,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-19 04:38:11,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-01-19 04:38:11,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 360 transitions. [2022-01-19 04:38:11,353 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8 [2022-01-19 04:38:11,353 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 360 transitions. [2022-01-19 04:38:11,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 360 transitions. [2022-01-19 04:38:11,353 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 04:38:11,353 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 360 transitions. [2022-01-19 04:38:11,355 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 60.0) internal successors, (360), 6 states have internal predecessors, (360), 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 04:38:11,356 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 04:38:11,357 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 04:38:11,357 INFO L186 Difference]: Start difference. First operand has 76 places, 72 transitions, 173 flow. Second operand 6 states and 360 transitions. [2022-01-19 04:38:11,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 96 transitions, 303 flow [2022-01-19 04:38:11,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 96 transitions, 295 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-01-19 04:38:11,360 INFO L242 Difference]: Finished difference. Result has 80 places, 71 transitions, 175 flow [2022-01-19 04:38:11,360 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=175, PETRI_PLACES=80, PETRI_TRANSITIONS=71} [2022-01-19 04:38:11,361 INFO L334 CegarLoopForPetriNet]: 73 programPoint places, 7 predicate places. [2022-01-19 04:38:11,361 INFO L470 AbstractCegarLoop]: Abstraction has has 80 places, 71 transitions, 175 flow [2022-01-19 04:38:11,362 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 54.833333333333336) internal successors, (329), 6 states have internal predecessors, (329), 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 04:38:11,362 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:38:11,362 INFO L254 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 04:38:11,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-19 04:38:11,362 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-19 04:38:11,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:38:11,363 INFO L85 PathProgramCache]: Analyzing trace with hash -131961110, now seen corresponding path program 2 times [2022-01-19 04:38:11,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:38:11,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139569274] [2022-01-19 04:38:11,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:38:11,364 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:38:11,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 04:38:11,555 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 04:38:11,556 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 04:38:11,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139569274] [2022-01-19 04:38:11,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139569274] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 04:38:11,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [235883484] [2022-01-19 04:38:11,556 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-19 04:38:11,557 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 04:38:11,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 04:38:11,563 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 04:38:11,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-19 04:38:11,661 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-19 04:38:11,661 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 04:38:11,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 31 conjunts are in the unsatisfiable core [2022-01-19 04:38:11,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 04:38:12,239 INFO L353 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-01-19 04:38:12,240 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 30 [2022-01-19 04:38:12,294 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 04:38:12,295 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 04:38:12,404 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2022-01-19 04:38:12,499 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 04:38:12,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [235883484] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 04:38:12,499 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 04:38:12,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 15 [2022-01-19 04:38:12,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650308180] [2022-01-19 04:38:12,500 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 04:38:12,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-19 04:38:12,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 04:38:12,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-19 04:38:12,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2022-01-19 04:38:12,503 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 75 [2022-01-19 04:38:12,504 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 71 transitions, 175 flow. Second operand has 15 states, 15 states have (on average 45.53333333333333) internal successors, (683), 15 states have internal predecessors, (683), 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 04:38:12,504 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 04:38:12,505 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 75 [2022-01-19 04:38:12,505 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 04:38:13,032 INFO L129 PetriNetUnfolder]: 46/176 cut-off events. [2022-01-19 04:38:13,033 INFO L130 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2022-01-19 04:38:13,033 INFO L84 FinitePrefix]: Finished finitePrefix Result has 368 conditions, 176 events. 46/176 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 520 event pairs, 0 based on Foata normal form. 0/168 useless extension candidates. Maximal degree in co-relation 361. Up to 36 conditions per place. [2022-01-19 04:38:13,034 INFO L132 encePairwiseOnDemand]: 59/75 looper letters, 0 selfloop transitions, 0 changer transitions 116/116 dead transitions. [2022-01-19 04:38:13,034 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 116 transitions, 485 flow [2022-01-19 04:38:13,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-01-19 04:38:13,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-01-19 04:38:13,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1432 transitions. [2022-01-19 04:38:13,038 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6159139784946237 [2022-01-19 04:38:13,038 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1432 transitions. [2022-01-19 04:38:13,038 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1432 transitions. [2022-01-19 04:38:13,039 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 04:38:13,039 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1432 transitions. [2022-01-19 04:38:13,043 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 46.193548387096776) internal successors, (1432), 31 states have internal predecessors, (1432), 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 04:38:13,050 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 75.0) internal successors, (2400), 32 states have internal predecessors, (2400), 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 04:38:13,052 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 75.0) internal successors, (2400), 32 states have internal predecessors, (2400), 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 04:38:13,052 INFO L186 Difference]: Start difference. First operand has 80 places, 71 transitions, 175 flow. Second operand 31 states and 1432 transitions. [2022-01-19 04:38:13,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 116 transitions, 485 flow [2022-01-19 04:38:13,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 116 transitions, 428 flow, removed 2 selfloop flow, removed 5 redundant places. [2022-01-19 04:38:13,055 INFO L242 Difference]: Finished difference. Result has 86 places, 0 transitions, 0 flow [2022-01-19 04:38:13,055 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=0, PETRI_PLACES=86, PETRI_TRANSITIONS=0} [2022-01-19 04:38:13,056 INFO L334 CegarLoopForPetriNet]: 73 programPoint places, 13 predicate places. [2022-01-19 04:38:13,056 INFO L470 AbstractCegarLoop]: Abstraction has has 86 places, 0 transitions, 0 flow [2022-01-19 04:38:13,057 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 45.53333333333333) internal successors, (683), 15 states have internal predecessors, (683), 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 04:38:13,059 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-01-19 04:38:13,059 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2022-01-19 04:38:13,059 INFO L764 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2022-01-19 04:38:13,088 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-19 04:38:13,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 04:38:13,277 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2022-01-19 04:38:13,278 INFO L309 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE (1/2) [2022-01-19 04:38:13,282 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2022-01-19 04:38:13,283 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 04:38:13,283 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-19 04:38:13,284 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 73 places, 75 transitions, 155 flow [2022-01-19 04:38:13,291 INFO L129 PetriNetUnfolder]: 8/113 cut-off events. [2022-01-19 04:38:13,291 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-01-19 04:38:13,291 INFO L84 FinitePrefix]: Finished finitePrefix Result has 118 conditions, 113 events. 8/113 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 208 event pairs, 0 based on Foata normal form. 0/100 useless extension candidates. Maximal degree in co-relation 57. Up to 4 conditions per place. [2022-01-19 04:38:13,292 INFO L82 GeneralOperation]: Start removeDead. Operand has 73 places, 75 transitions, 155 flow [2022-01-19 04:38:13,292 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 73 places, 75 transitions, 155 flow [2022-01-19 04:38:13,297 INFO L129 PetriNetUnfolder]: 6/74 cut-off events. [2022-01-19 04:38:13,297 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-01-19 04:38:13,297 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:38:13,297 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 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 04:38:13,297 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0INUSE_VIOLATION] === [2022-01-19 04:38:13,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:38:13,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1114984198, now seen corresponding path program 1 times [2022-01-19 04:38:13,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:38:13,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136401182] [2022-01-19 04:38:13,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:38:13,298 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:38:13,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-19 04:38:13,310 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-19 04:38:13,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-19 04:38:13,339 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-01-19 04:38:13,340 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-19 04:38:13,341 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION (0 of 1 remaining) [2022-01-19 04:38:13,341 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-19 04:38:13,341 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2022-01-19 04:38:13,341 INFO L309 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2022-01-19 04:38:13,342 WARN L235 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-01-19 04:38:13,342 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-01-19 04:38:13,356 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,356 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,356 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,356 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,356 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,356 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,356 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,356 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,357 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_~#l~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,357 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_~#l~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,357 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_~#l~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,357 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_~#l~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,357 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_~#l~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,357 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_~#l~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,357 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0___VERIFIER_atomic_fetch_and_inc_~l#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,357 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0___VERIFIER_atomic_fetch_and_inc_~l#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,358 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0___VERIFIER_atomic_fetch_and_inc_#in~l#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,358 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,358 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0___VERIFIER_atomic_fetch_and_inc_#in~l#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,358 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,358 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_~#l~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,358 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_~#l~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,358 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0___VERIFIER_atomic_fetch_and_inc_~l#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,358 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0___VERIFIER_atomic_fetch_and_inc_~l#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,358 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0___VERIFIER_atomic_fetch_and_inc_#in~l#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,359 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,359 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0___VERIFIER_atomic_fetch_and_inc_#in~l#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,359 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,359 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_~#l~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,359 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_~#l~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,359 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,359 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_~#l~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,359 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_~#l~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,360 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,360 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_~#l~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,360 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_~#l~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,360 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,360 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_~#l~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,360 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_~#l~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,360 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,360 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,361 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,361 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,361 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,361 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,361 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,361 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_~#l~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,361 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_~#l~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,361 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_~#l~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,361 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_~#l~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,362 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_~#l~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,362 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_~#l~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,362 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,362 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,362 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,362 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,362 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,362 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,362 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,362 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,363 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_~#l~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,363 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_~#l~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,363 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_~#l~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,363 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_~#l~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,363 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_~#l~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,363 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_~#l~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,363 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0___VERIFIER_atomic_fetch_and_inc_~l#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,363 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0___VERIFIER_atomic_fetch_and_inc_~l#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,363 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0___VERIFIER_atomic_fetch_and_inc_#in~l#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,363 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,364 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0___VERIFIER_atomic_fetch_and_inc_#in~l#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,364 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,364 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_~#l~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,364 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_~#l~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,364 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0___VERIFIER_atomic_fetch_and_inc_~l#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,364 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0___VERIFIER_atomic_fetch_and_inc_~l#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,364 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0___VERIFIER_atomic_fetch_and_inc_#in~l#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,364 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,364 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0___VERIFIER_atomic_fetch_and_inc_#in~l#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,364 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,365 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_~#l~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,365 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_~#l~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,365 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,365 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_~#l~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,365 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_~#l~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,365 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,365 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_~#l~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,365 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_~#l~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,365 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,366 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_~#l~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,366 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_~#l~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,366 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,366 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,366 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,366 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,366 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,367 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,367 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,367 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_~#l~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,367 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_~#l~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,367 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_~#l~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,367 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_~#l~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,368 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_~#l~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,368 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_~#l~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,368 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,368 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,368 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,368 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0___VERIFIER_atomic_fetch_and_inc_~l#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,369 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_~#l~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,369 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0___VERIFIER_atomic_fetch_and_inc_#in~l#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,369 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,369 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,369 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,369 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0___VERIFIER_atomic_fetch_and_inc_#in~l#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,369 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,369 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_~#l~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,369 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0___VERIFIER_atomic_fetch_and_inc_~l#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,369 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,370 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,370 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,370 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0___VERIFIER_atomic_fetch_and_inc_#in~l#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,370 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,370 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,371 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0___VERIFIER_atomic_fetch_and_inc_~l#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,371 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,371 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_~#l~0#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,371 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_~#l~0#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,371 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0___VERIFIER_atomic_fetch_and_inc_~l#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,371 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,371 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,371 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0___VERIFIER_atomic_fetch_and_inc_#in~l#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,372 WARN L322 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:38:13,372 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-01-19 04:38:13,375 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-19 04:38:13,375 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 04:38:13,376 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-01-19 04:38:13,377 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 91 places, 93 transitions, 198 flow [2022-01-19 04:38:13,389 INFO L129 PetriNetUnfolder]: 13/171 cut-off events. [2022-01-19 04:38:13,390 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-01-19 04:38:13,390 INFO L84 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 171 events. 13/171 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 435 event pairs, 0 based on Foata normal form. 0/150 useless extension candidates. Maximal degree in co-relation 114. Up to 6 conditions per place. [2022-01-19 04:38:13,391 INFO L82 GeneralOperation]: Start removeDead. Operand has 91 places, 93 transitions, 198 flow [2022-01-19 04:38:13,392 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 91 places, 93 transitions, 198 flow [2022-01-19 04:38:13,395 INFO L129 PetriNetUnfolder]: 4/51 cut-off events. [2022-01-19 04:38:13,395 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-01-19 04:38:13,395 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:38:13,395 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] [2022-01-19 04:38:13,396 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-19 04:38:13,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:38:13,396 INFO L85 PathProgramCache]: Analyzing trace with hash -403506638, now seen corresponding path program 1 times [2022-01-19 04:38:13,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:38:13,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814721715] [2022-01-19 04:38:13,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:38:13,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:38:13,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 04:38:13,411 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 04:38:13,411 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 04:38:13,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814721715] [2022-01-19 04:38:13,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814721715] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 04:38:13,412 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 04:38:13,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-19 04:38:13,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618589748] [2022-01-19 04:38:13,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 04:38:13,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-19 04:38:13,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 04:38:13,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-19 04:38:13,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-19 04:38:13,413 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 93 [2022-01-19 04:38:13,414 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 93 transitions, 198 flow. Second operand has 2 states, 2 states have (on average 73.5) internal successors, (147), 2 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 04:38:13,414 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 04:38:13,414 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 93 [2022-01-19 04:38:13,414 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 04:38:13,476 INFO L129 PetriNetUnfolder]: 150/610 cut-off events. [2022-01-19 04:38:13,476 INFO L130 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2022-01-19 04:38:13,478 INFO L84 FinitePrefix]: Finished finitePrefix Result has 863 conditions, 610 events. 150/610 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 3438 event pairs, 93 based on Foata normal form. 75/577 useless extension candidates. Maximal degree in co-relation 627. Up to 234 conditions per place. [2022-01-19 04:38:13,480 INFO L132 encePairwiseOnDemand]: 89/93 looper letters, 14 selfloop transitions, 0 changer transitions 0/86 dead transitions. [2022-01-19 04:38:13,480 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 86 transitions, 212 flow [2022-01-19 04:38:13,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-19 04:38:13,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-01-19 04:38:13,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 162 transitions. [2022-01-19 04:38:13,482 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8709677419354839 [2022-01-19 04:38:13,482 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 162 transitions. [2022-01-19 04:38:13,482 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 162 transitions. [2022-01-19 04:38:13,482 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 04:38:13,482 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 162 transitions. [2022-01-19 04:38:13,482 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 81.0) internal successors, (162), 2 states have internal predecessors, (162), 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 04:38:13,483 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 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 04:38:13,483 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 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 04:38:13,483 INFO L186 Difference]: Start difference. First operand has 91 places, 93 transitions, 198 flow. Second operand 2 states and 162 transitions. [2022-01-19 04:38:13,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 86 transitions, 212 flow [2022-01-19 04:38:13,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 86 transitions, 210 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-01-19 04:38:13,487 INFO L242 Difference]: Finished difference. Result has 89 places, 86 transitions, 182 flow [2022-01-19 04:38:13,487 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=182, PETRI_PLACES=89, PETRI_TRANSITIONS=86} [2022-01-19 04:38:13,488 INFO L334 CegarLoopForPetriNet]: 91 programPoint places, -2 predicate places. [2022-01-19 04:38:13,488 INFO L470 AbstractCegarLoop]: Abstraction has has 89 places, 86 transitions, 182 flow [2022-01-19 04:38:13,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 73.5) internal successors, (147), 2 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 04:38:13,489 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:38:13,489 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 04:38:13,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-19 04:38:13,489 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-19 04:38:13,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:38:13,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1667315025, now seen corresponding path program 1 times [2022-01-19 04:38:13,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:38:13,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195299544] [2022-01-19 04:38:13,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:38:13,490 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:38:13,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 04:38:13,516 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 04:38:13,517 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 04:38:13,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195299544] [2022-01-19 04:38:13,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195299544] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 04:38:13,517 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 04:38:13,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-19 04:38:13,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439811683] [2022-01-19 04:38:13,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 04:38:13,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 04:38:13,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 04:38:13,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 04:38:13,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 04:38:13,519 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 93 [2022-01-19 04:38:13,519 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 86 transitions, 182 flow. Second operand has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 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 04:38:13,519 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 04:38:13,519 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 93 [2022-01-19 04:38:13,519 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 04:38:13,797 INFO L129 PetriNetUnfolder]: 1077/2517 cut-off events. [2022-01-19 04:38:13,797 INFO L130 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2022-01-19 04:38:13,803 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4257 conditions, 2517 events. 1077/2517 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 17279 event pairs, 352 based on Foata normal form. 0/2168 useless extension candidates. Maximal degree in co-relation 4252. Up to 1021 conditions per place. [2022-01-19 04:38:13,812 INFO L132 encePairwiseOnDemand]: 84/93 looper letters, 43 selfloop transitions, 6 changer transitions 0/108 dead transitions. [2022-01-19 04:38:13,812 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 108 transitions, 329 flow [2022-01-19 04:38:13,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 04:38:13,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 04:38:13,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 229 transitions. [2022-01-19 04:38:13,814 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8207885304659498 [2022-01-19 04:38:13,814 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 229 transitions. [2022-01-19 04:38:13,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 229 transitions. [2022-01-19 04:38:13,814 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 04:38:13,814 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 229 transitions. [2022-01-19 04:38:13,815 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 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 04:38:13,815 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 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 04:38:13,816 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 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 04:38:13,816 INFO L186 Difference]: Start difference. First operand has 89 places, 86 transitions, 182 flow. Second operand 3 states and 229 transitions. [2022-01-19 04:38:13,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 108 transitions, 329 flow [2022-01-19 04:38:13,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 108 transitions, 329 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-01-19 04:38:13,818 INFO L242 Difference]: Finished difference. Result has 93 places, 92 transitions, 236 flow [2022-01-19 04:38:13,818 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=236, PETRI_PLACES=93, PETRI_TRANSITIONS=92} [2022-01-19 04:38:13,819 INFO L334 CegarLoopForPetriNet]: 91 programPoint places, 2 predicate places. [2022-01-19 04:38:13,819 INFO L470 AbstractCegarLoop]: Abstraction has has 93 places, 92 transitions, 236 flow [2022-01-19 04:38:13,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 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 04:38:13,819 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:38:13,820 INFO L254 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 04:38:13,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-19 04:38:13,820 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-19 04:38:13,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:38:13,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1035819166, now seen corresponding path program 1 times [2022-01-19 04:38:13,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:38:13,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051819140] [2022-01-19 04:38:13,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:38:13,821 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:38:13,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 04:38:13,898 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-19 04:38:13,899 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 04:38:13,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051819140] [2022-01-19 04:38:13,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051819140] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 04:38:13,899 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 04:38:13,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-19 04:38:13,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236214035] [2022-01-19 04:38:13,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 04:38:13,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-19 04:38:13,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 04:38:13,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-19 04:38:13,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-19 04:38:13,901 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 93 [2022-01-19 04:38:13,901 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 92 transitions, 236 flow. Second operand has 6 states, 6 states have (on average 65.83333333333333) internal successors, (395), 6 states have internal predecessors, (395), 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 04:38:13,901 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 04:38:13,901 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 93 [2022-01-19 04:38:13,902 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 04:38:14,130 INFO L129 PetriNetUnfolder]: 489/1567 cut-off events. [2022-01-19 04:38:14,131 INFO L130 PetriNetUnfolder]: For 196/212 co-relation queries the response was YES. [2022-01-19 04:38:14,138 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2763 conditions, 1567 events. 489/1567 cut-off events. For 196/212 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 11867 event pairs, 81 based on Foata normal form. 0/1391 useless extension candidates. Maximal degree in co-relation 2756. Up to 449 conditions per place. [2022-01-19 04:38:14,144 INFO L132 encePairwiseOnDemand]: 83/93 looper letters, 48 selfloop transitions, 19 changer transitions 0/137 dead transitions. [2022-01-19 04:38:14,145 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 137 transitions, 470 flow [2022-01-19 04:38:14,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-19 04:38:14,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-01-19 04:38:14,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 452 transitions. [2022-01-19 04:38:14,147 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8100358422939068 [2022-01-19 04:38:14,147 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 452 transitions. [2022-01-19 04:38:14,147 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 452 transitions. [2022-01-19 04:38:14,147 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 04:38:14,147 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 452 transitions. [2022-01-19 04:38:14,148 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 75.33333333333333) internal successors, (452), 6 states have internal predecessors, (452), 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 04:38:14,149 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 93.0) internal successors, (651), 7 states have internal predecessors, (651), 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 04:38:14,149 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 93.0) internal successors, (651), 7 states have internal predecessors, (651), 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 04:38:14,150 INFO L186 Difference]: Start difference. First operand has 93 places, 92 transitions, 236 flow. Second operand 6 states and 452 transitions. [2022-01-19 04:38:14,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 137 transitions, 470 flow [2022-01-19 04:38:14,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 137 transitions, 458 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-01-19 04:38:14,155 INFO L242 Difference]: Finished difference. Result has 99 places, 111 transitions, 341 flow [2022-01-19 04:38:14,155 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=341, PETRI_PLACES=99, PETRI_TRANSITIONS=111} [2022-01-19 04:38:14,155 INFO L334 CegarLoopForPetriNet]: 91 programPoint places, 8 predicate places. [2022-01-19 04:38:14,156 INFO L470 AbstractCegarLoop]: Abstraction has has 99 places, 111 transitions, 341 flow [2022-01-19 04:38:14,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 65.83333333333333) internal successors, (395), 6 states have internal predecessors, (395), 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 04:38:14,156 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:38:14,156 INFO L254 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 04:38:14,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-19 04:38:14,156 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-19 04:38:14,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:38:14,157 INFO L85 PathProgramCache]: Analyzing trace with hash -1578962266, now seen corresponding path program 2 times [2022-01-19 04:38:14,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:38:14,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286172100] [2022-01-19 04:38:14,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:38:14,157 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:38:14,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 04:38:14,254 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-19 04:38:14,254 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 04:38:14,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286172100] [2022-01-19 04:38:14,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286172100] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 04:38:14,256 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 04:38:14,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-19 04:38:14,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130286118] [2022-01-19 04:38:14,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 04:38:14,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-19 04:38:14,258 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 04:38:14,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-19 04:38:14,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-19 04:38:14,259 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 93 [2022-01-19 04:38:14,260 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 111 transitions, 341 flow. Second operand has 6 states, 6 states have (on average 65.0) internal successors, (390), 6 states have internal predecessors, (390), 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 04:38:14,260 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 04:38:14,260 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 93 [2022-01-19 04:38:14,260 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 04:38:14,534 INFO L129 PetriNetUnfolder]: 507/1680 cut-off events. [2022-01-19 04:38:14,534 INFO L130 PetriNetUnfolder]: For 376/459 co-relation queries the response was YES. [2022-01-19 04:38:14,541 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3176 conditions, 1680 events. 507/1680 cut-off events. For 376/459 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 12671 event pairs, 101 based on Foata normal form. 50/1625 useless extension candidates. Maximal degree in co-relation 3166. Up to 433 conditions per place. [2022-01-19 04:38:14,549 INFO L132 encePairwiseOnDemand]: 84/93 looper letters, 54 selfloop transitions, 20 changer transitions 0/143 dead transitions. [2022-01-19 04:38:14,549 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 143 transitions, 587 flow [2022-01-19 04:38:14,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-19 04:38:14,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-01-19 04:38:14,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 449 transitions. [2022-01-19 04:38:14,551 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8046594982078853 [2022-01-19 04:38:14,551 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 449 transitions. [2022-01-19 04:38:14,551 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 449 transitions. [2022-01-19 04:38:14,552 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 04:38:14,552 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 449 transitions. [2022-01-19 04:38:14,553 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 74.83333333333333) internal successors, (449), 6 states have internal predecessors, (449), 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 04:38:14,554 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 93.0) internal successors, (651), 7 states have internal predecessors, (651), 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 04:38:14,555 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 93.0) internal successors, (651), 7 states have internal predecessors, (651), 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 04:38:14,555 INFO L186 Difference]: Start difference. First operand has 99 places, 111 transitions, 341 flow. Second operand 6 states and 449 transitions. [2022-01-19 04:38:14,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 143 transitions, 587 flow [2022-01-19 04:38:14,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 143 transitions, 587 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-01-19 04:38:14,559 INFO L242 Difference]: Finished difference. Result has 105 places, 114 transitions, 404 flow [2022-01-19 04:38:14,559 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=341, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=404, PETRI_PLACES=105, PETRI_TRANSITIONS=114} [2022-01-19 04:38:14,561 INFO L334 CegarLoopForPetriNet]: 91 programPoint places, 14 predicate places. [2022-01-19 04:38:14,561 INFO L470 AbstractCegarLoop]: Abstraction has has 105 places, 114 transitions, 404 flow [2022-01-19 04:38:14,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 65.0) internal successors, (390), 6 states have internal predecessors, (390), 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 04:38:14,562 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:38:14,562 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 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 04:38:14,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-19 04:38:14,562 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-19 04:38:14,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:38:14,563 INFO L85 PathProgramCache]: Analyzing trace with hash 906114598, now seen corresponding path program 1 times [2022-01-19 04:38:14,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:38:14,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828958077] [2022-01-19 04:38:14,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:38:14,564 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:38:14,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 04:38:14,651 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-19 04:38:14,652 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 04:38:14,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828958077] [2022-01-19 04:38:14,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828958077] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 04:38:14,652 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 04:38:14,652 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-19 04:38:14,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911741805] [2022-01-19 04:38:14,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 04:38:14,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-19 04:38:14,653 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 04:38:14,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-19 04:38:14,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-19 04:38:14,654 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 93 [2022-01-19 04:38:14,654 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 114 transitions, 404 flow. Second operand has 6 states, 6 states have (on average 66.0) internal successors, (396), 6 states have internal predecessors, (396), 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 04:38:14,654 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 04:38:14,655 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 93 [2022-01-19 04:38:14,655 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 04:38:14,890 INFO L129 PetriNetUnfolder]: 411/1234 cut-off events. [2022-01-19 04:38:14,890 INFO L130 PetriNetUnfolder]: For 628/1005 co-relation queries the response was YES. [2022-01-19 04:38:14,895 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2620 conditions, 1234 events. 411/1234 cut-off events. For 628/1005 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 8397 event pairs, 48 based on Foata normal form. 66/1242 useless extension candidates. Maximal degree in co-relation 2608. Up to 376 conditions per place. [2022-01-19 04:38:14,900 INFO L132 encePairwiseOnDemand]: 83/93 looper letters, 49 selfloop transitions, 23 changer transitions 0/142 dead transitions. [2022-01-19 04:38:14,900 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 142 transitions, 646 flow [2022-01-19 04:38:14,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-19 04:38:14,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-01-19 04:38:14,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 452 transitions. [2022-01-19 04:38:14,902 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8100358422939068 [2022-01-19 04:38:14,902 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 452 transitions. [2022-01-19 04:38:14,902 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 452 transitions. [2022-01-19 04:38:14,902 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 04:38:14,902 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 452 transitions. [2022-01-19 04:38:14,904 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 75.33333333333333) internal successors, (452), 6 states have internal predecessors, (452), 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 04:38:14,905 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 93.0) internal successors, (651), 7 states have internal predecessors, (651), 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 04:38:14,905 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 93.0) internal successors, (651), 7 states have internal predecessors, (651), 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 04:38:14,906 INFO L186 Difference]: Start difference. First operand has 105 places, 114 transitions, 404 flow. Second operand 6 states and 452 transitions. [2022-01-19 04:38:14,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 142 transitions, 646 flow [2022-01-19 04:38:14,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 142 transitions, 614 flow, removed 3 selfloop flow, removed 3 redundant places. [2022-01-19 04:38:14,910 INFO L242 Difference]: Finished difference. Result has 108 places, 118 transitions, 454 flow [2022-01-19 04:38:14,911 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=454, PETRI_PLACES=108, PETRI_TRANSITIONS=118} [2022-01-19 04:38:14,911 INFO L334 CegarLoopForPetriNet]: 91 programPoint places, 17 predicate places. [2022-01-19 04:38:14,911 INFO L470 AbstractCegarLoop]: Abstraction has has 108 places, 118 transitions, 454 flow [2022-01-19 04:38:14,912 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 66.0) internal successors, (396), 6 states have internal predecessors, (396), 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 04:38:14,912 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:38:14,912 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 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] [2022-01-19 04:38:14,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-19 04:38:14,912 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-19 04:38:14,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:38:14,912 INFO L85 PathProgramCache]: Analyzing trace with hash -999372118, now seen corresponding path program 2 times [2022-01-19 04:38:14,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:38:14,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119257833] [2022-01-19 04:38:14,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:38:14,913 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:38:14,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 04:38:15,085 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-19 04:38:15,085 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 04:38:15,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119257833] [2022-01-19 04:38:15,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119257833] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 04:38:15,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [218807045] [2022-01-19 04:38:15,086 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-19 04:38:15,086 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 04:38:15,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 04:38:15,087 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 04:38:15,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-19 04:38:15,173 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-19 04:38:15,173 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 04:38:15,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 35 conjunts are in the unsatisfiable core [2022-01-19 04:38:15,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 04:38:15,223 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-19 04:38:15,347 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-19 04:38:15,347 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-01-19 04:38:15,428 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-01-19 04:38:15,518 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-01-19 04:38:15,542 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-19 04:38:15,543 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 04:38:15,586 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_142 (Array Int Int))) (not (= (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t~1#1.base| v_ArrVal_142) |c_thr1Thread2of2ForFork0_~#l~0#1.base|) |c_thr1Thread2of2ForFork0_~#l~0#1.offset|) 4294967296) (mod c_~s~0 4294967296)))) is different from false [2022-01-19 04:38:15,649 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 04:38:15,649 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 24 [2022-01-19 04:38:15,652 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 33 [2022-01-19 04:38:15,675 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-01-19 04:38:16,087 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-01-19 04:38:16,141 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 14 not checked. [2022-01-19 04:38:16,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [218807045] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 04:38:16,141 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 04:38:16,142 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 11] total 22 [2022-01-19 04:38:16,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924478821] [2022-01-19 04:38:16,142 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 04:38:16,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-19 04:38:16,142 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 04:38:16,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-19 04:38:16,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=333, Unknown=1, NotChecked=38, Total=462 [2022-01-19 04:38:16,144 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 93 [2022-01-19 04:38:16,145 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 118 transitions, 454 flow. Second operand has 22 states, 22 states have (on average 42.40909090909091) internal successors, (933), 22 states have internal predecessors, (933), 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 04:38:16,145 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 04:38:16,145 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 93 [2022-01-19 04:38:16,145 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 04:38:19,264 INFO L129 PetriNetUnfolder]: 5145/9576 cut-off events. [2022-01-19 04:38:19,264 INFO L130 PetriNetUnfolder]: For 6632/7139 co-relation queries the response was YES. [2022-01-19 04:38:19,289 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23627 conditions, 9576 events. 5145/9576 cut-off events. For 6632/7139 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 73493 event pairs, 649 based on Foata normal form. 526/9977 useless extension candidates. Maximal degree in co-relation 23614. Up to 2438 conditions per place. [2022-01-19 04:38:19,404 INFO L132 encePairwiseOnDemand]: 59/93 looper letters, 342 selfloop transitions, 255 changer transitions 135/772 dead transitions. [2022-01-19 04:38:19,404 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 772 transitions, 4455 flow [2022-01-19 04:38:19,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-01-19 04:38:19,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2022-01-19 04:38:19,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 2874 transitions. [2022-01-19 04:38:19,414 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5830797321972002 [2022-01-19 04:38:19,414 INFO L72 ComplementDD]: Start complementDD. Operand 53 states and 2874 transitions. [2022-01-19 04:38:19,414 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 2874 transitions. [2022-01-19 04:38:19,416 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 04:38:19,416 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 53 states and 2874 transitions. [2022-01-19 04:38:19,424 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 54 states, 53 states have (on average 54.22641509433962) internal successors, (2874), 53 states have internal predecessors, (2874), 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 04:38:19,434 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 54 states, 54 states have (on average 93.0) internal successors, (5022), 54 states have internal predecessors, (5022), 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 04:38:19,435 INFO L81 ComplementDD]: Finished complementDD. Result has 54 states, 54 states have (on average 93.0) internal successors, (5022), 54 states have internal predecessors, (5022), 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 04:38:19,435 INFO L186 Difference]: Start difference. First operand has 108 places, 118 transitions, 454 flow. Second operand 53 states and 2874 transitions. [2022-01-19 04:38:19,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 772 transitions, 4455 flow [2022-01-19 04:38:19,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 772 transitions, 4300 flow, removed 33 selfloop flow, removed 3 redundant places. [2022-01-19 04:38:19,456 INFO L242 Difference]: Finished difference. Result has 200 places, 352 transitions, 2769 flow [2022-01-19 04:38:19,457 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=422, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=2769, PETRI_PLACES=200, PETRI_TRANSITIONS=352} [2022-01-19 04:38:19,458 INFO L334 CegarLoopForPetriNet]: 91 programPoint places, 109 predicate places. [2022-01-19 04:38:19,458 INFO L470 AbstractCegarLoop]: Abstraction has has 200 places, 352 transitions, 2769 flow [2022-01-19 04:38:19,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 42.40909090909091) internal successors, (933), 22 states have internal predecessors, (933), 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 04:38:19,458 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:38:19,459 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 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] [2022-01-19 04:38:19,485 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-19 04:38:19,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-01-19 04:38:19,681 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-19 04:38:19,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:38:19,681 INFO L85 PathProgramCache]: Analyzing trace with hash -189882314, now seen corresponding path program 3 times [2022-01-19 04:38:19,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:38:19,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376878170] [2022-01-19 04:38:19,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:38:19,682 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:38:19,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 04:38:19,893 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-19 04:38:19,893 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 04:38:19,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376878170] [2022-01-19 04:38:19,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376878170] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 04:38:19,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1700039892] [2022-01-19 04:38:19,894 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-19 04:38:19,894 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 04:38:19,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 04:38:19,895 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 04:38:19,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-19 04:38:19,968 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-19 04:38:19,968 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 04:38:19,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 43 conjunts are in the unsatisfiable core [2022-01-19 04:38:19,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 04:38:20,014 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-19 04:38:20,155 INFO L353 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-01-19 04:38:20,155 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-01-19 04:38:20,210 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-19 04:38:20,210 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-01-19 04:38:20,294 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-19 04:38:20,424 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2022-01-19 04:38:20,459 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-19 04:38:20,459 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 04:38:20,496 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_179 (Array Int Int))) (not (= (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t~1#1.base| v_ArrVal_179) |c_thr1Thread2of2ForFork0_~#l~0#1.base|) |c_thr1Thread2of2ForFork0_~#l~0#1.offset|) 4294967296) (mod c_~s~0 4294967296)))) is different from false [2022-01-19 04:38:20,533 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 04:38:20,534 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 24 [2022-01-19 04:38:20,537 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 33 [2022-01-19 04:38:20,544 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-01-19 04:38:21,165 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-01-19 04:38:21,236 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 14 not checked. [2022-01-19 04:38:21,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1700039892] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 04:38:21,237 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 04:38:21,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 11] total 22 [2022-01-19 04:38:21,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445877038] [2022-01-19 04:38:21,237 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 04:38:21,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-19 04:38:21,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 04:38:21,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-19 04:38:21,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=331, Unknown=1, NotChecked=38, Total=462 [2022-01-19 04:38:21,239 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 93 [2022-01-19 04:38:21,240 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 352 transitions, 2769 flow. Second operand has 22 states, 22 states have (on average 42.27272727272727) internal successors, (930), 22 states have internal predecessors, (930), 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 04:38:21,240 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 04:38:21,241 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 93 [2022-01-19 04:38:21,241 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 04:38:25,759 INFO L129 PetriNetUnfolder]: 7108/13114 cut-off events. [2022-01-19 04:38:25,759 INFO L130 PetriNetUnfolder]: For 301758/304534 co-relation queries the response was YES. [2022-01-19 04:38:25,841 INFO L84 FinitePrefix]: Finished finitePrefix Result has 77226 conditions, 13114 events. 7108/13114 cut-off events. For 301758/304534 co-relation queries the response was YES. Maximal size of possible extension queue 565. Compared 104021 event pairs, 594 based on Foata normal form. 232/13180 useless extension candidates. Maximal degree in co-relation 77170. Up to 3198 conditions per place. [2022-01-19 04:38:25,908 INFO L132 encePairwiseOnDemand]: 61/93 looper letters, 423 selfloop transitions, 497 changer transitions 116/1076 dead transitions. [2022-01-19 04:38:25,909 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 1076 transitions, 12442 flow [2022-01-19 04:38:25,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-19 04:38:25,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-01-19 04:38:25,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 2398 transitions. [2022-01-19 04:38:25,914 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5729988052568697 [2022-01-19 04:38:25,914 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 2398 transitions. [2022-01-19 04:38:25,914 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 2398 transitions. [2022-01-19 04:38:25,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 04:38:25,918 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 2398 transitions. [2022-01-19 04:38:25,924 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 53.28888888888889) internal successors, (2398), 45 states have internal predecessors, (2398), 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 04:38:25,931 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 93.0) internal successors, (4278), 46 states have internal predecessors, (4278), 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 04:38:25,932 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 93.0) internal successors, (4278), 46 states have internal predecessors, (4278), 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 04:38:25,932 INFO L186 Difference]: Start difference. First operand has 200 places, 352 transitions, 2769 flow. Second operand 45 states and 2398 transitions. [2022-01-19 04:38:25,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 1076 transitions, 12442 flow [2022-01-19 04:38:26,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 1076 transitions, 11792 flow, removed 221 selfloop flow, removed 16 redundant places. [2022-01-19 04:38:26,676 INFO L242 Difference]: Finished difference. Result has 253 places, 695 transitions, 7588 flow [2022-01-19 04:38:26,677 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=2513, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=178, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=7588, PETRI_PLACES=253, PETRI_TRANSITIONS=695} [2022-01-19 04:38:26,677 INFO L334 CegarLoopForPetriNet]: 91 programPoint places, 162 predicate places. [2022-01-19 04:38:26,678 INFO L470 AbstractCegarLoop]: Abstraction has has 253 places, 695 transitions, 7588 flow [2022-01-19 04:38:26,678 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 42.27272727272727) internal successors, (930), 22 states have internal predecessors, (930), 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 04:38:26,678 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:38:26,678 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 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] [2022-01-19 04:38:26,703 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-19 04:38:26,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 04:38:26,891 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-19 04:38:26,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:38:26,892 INFO L85 PathProgramCache]: Analyzing trace with hash -397592584, now seen corresponding path program 1 times [2022-01-19 04:38:26,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:38:26,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245359193] [2022-01-19 04:38:26,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:38:26,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:38:26,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 04:38:27,050 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-19 04:38:27,050 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 04:38:27,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245359193] [2022-01-19 04:38:27,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245359193] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 04:38:27,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [178462883] [2022-01-19 04:38:27,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:38:27,051 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 04:38:27,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 04:38:27,052 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 04:38:27,054 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-19 04:38:27,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 04:38:27,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 35 conjunts are in the unsatisfiable core [2022-01-19 04:38:27,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 04:38:27,170 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-19 04:38:27,296 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-19 04:38:27,297 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-01-19 04:38:27,437 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-01-19 04:38:27,536 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-01-19 04:38:27,561 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-19 04:38:27,561 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 04:38:27,599 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_215 (Array Int Int))) (not (= (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t~1#1.base| v_ArrVal_215) |c_thr1Thread1of2ForFork0_~#l~0#1.base|) |c_thr1Thread1of2ForFork0_~#l~0#1.offset|) 4294967296) (mod c_~s~0 4294967296)))) is different from false [2022-01-19 04:38:27,636 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 04:38:27,637 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 24 [2022-01-19 04:38:27,639 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 33 [2022-01-19 04:38:27,647 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-01-19 04:38:28,013 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-01-19 04:38:28,064 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 14 not checked. [2022-01-19 04:38:28,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [178462883] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 04:38:28,064 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 04:38:28,064 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 11] total 23 [2022-01-19 04:38:28,064 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061333414] [2022-01-19 04:38:28,065 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 04:38:28,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-01-19 04:38:28,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 04:38:28,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-01-19 04:38:28,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=361, Unknown=1, NotChecked=40, Total=506 [2022-01-19 04:38:28,066 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 93 [2022-01-19 04:38:28,067 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 695 transitions, 7588 flow. Second operand has 23 states, 23 states have (on average 42.34782608695652) internal successors, (974), 23 states have internal predecessors, (974), 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 04:38:28,068 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 04:38:28,068 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 93 [2022-01-19 04:38:28,068 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 04:38:34,845 INFO L129 PetriNetUnfolder]: 12384/22665 cut-off events. [2022-01-19 04:38:34,845 INFO L130 PetriNetUnfolder]: For 775286/784859 co-relation queries the response was YES. [2022-01-19 04:38:35,213 INFO L84 FinitePrefix]: Finished finitePrefix Result has 166022 conditions, 22665 events. 12384/22665 cut-off events. For 775286/784859 co-relation queries the response was YES. Maximal size of possible extension queue 937. Compared 194458 event pairs, 831 based on Foata normal form. 725/23044 useless extension candidates. Maximal degree in co-relation 165944. Up to 5749 conditions per place. [2022-01-19 04:38:35,325 INFO L132 encePairwiseOnDemand]: 57/93 looper letters, 678 selfloop transitions, 1126 changer transitions 213/2065 dead transitions. [2022-01-19 04:38:35,326 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 2065 transitions, 30334 flow [2022-01-19 04:38:35,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-19 04:38:35,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2022-01-19 04:38:35,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 2774 transitions. [2022-01-19 04:38:35,332 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5965591397849462 [2022-01-19 04:38:35,332 INFO L72 ComplementDD]: Start complementDD. Operand 50 states and 2774 transitions. [2022-01-19 04:38:35,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 2774 transitions. [2022-01-19 04:38:35,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 04:38:35,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 50 states and 2774 transitions. [2022-01-19 04:38:35,337 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 51 states, 50 states have (on average 55.48) internal successors, (2774), 50 states have internal predecessors, (2774), 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 04:38:35,343 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 51 states, 51 states have (on average 93.0) internal successors, (4743), 51 states have internal predecessors, (4743), 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 04:38:35,344 INFO L81 ComplementDD]: Finished complementDD. Result has 51 states, 51 states have (on average 93.0) internal successors, (4743), 51 states have internal predecessors, (4743), 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 04:38:35,345 INFO L186 Difference]: Start difference. First operand has 253 places, 695 transitions, 7588 flow. Second operand 50 states and 2774 transitions. [2022-01-19 04:38:35,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 2065 transitions, 30334 flow [2022-01-19 04:38:38,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 2065 transitions, 29043 flow, removed 611 selfloop flow, removed 11 redundant places. [2022-01-19 04:38:38,716 INFO L242 Difference]: Finished difference. Result has 325 places, 1401 transitions, 19618 flow [2022-01-19 04:38:38,717 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=7236, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=695, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=476, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=19618, PETRI_PLACES=325, PETRI_TRANSITIONS=1401} [2022-01-19 04:38:38,717 INFO L334 CegarLoopForPetriNet]: 91 programPoint places, 234 predicate places. [2022-01-19 04:38:38,717 INFO L470 AbstractCegarLoop]: Abstraction has has 325 places, 1401 transitions, 19618 flow [2022-01-19 04:38:38,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 42.34782608695652) internal successors, (974), 23 states have internal predecessors, (974), 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 04:38:38,718 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:38:38,718 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 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] [2022-01-19 04:38:38,735 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-01-19 04:38:38,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 04:38:38,919 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-19 04:38:38,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:38:38,919 INFO L85 PathProgramCache]: Analyzing trace with hash 276091910, now seen corresponding path program 4 times [2022-01-19 04:38:38,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:38:38,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542689476] [2022-01-19 04:38:38,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:38:38,919 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:38:38,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 04:38:39,069 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-19 04:38:39,069 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 04:38:39,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542689476] [2022-01-19 04:38:39,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542689476] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 04:38:39,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [352024929] [2022-01-19 04:38:39,070 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-19 04:38:39,070 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 04:38:39,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 04:38:39,071 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 04:38:39,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-19 04:38:39,152 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-19 04:38:39,152 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 04:38:39,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 35 conjunts are in the unsatisfiable core [2022-01-19 04:38:39,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 04:38:39,191 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-19 04:38:39,305 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-19 04:38:39,306 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-01-19 04:38:39,364 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-01-19 04:38:39,460 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-01-19 04:38:39,486 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-19 04:38:39,486 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 04:38:39,522 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_251 (Array Int Int))) (not (= (mod c_~s~0 4294967296) (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t~1#1.base| v_ArrVal_251) |c_thr1Thread2of2ForFork0_~#l~0#1.base|) |c_thr1Thread2of2ForFork0_~#l~0#1.offset|) 4294967296)))) is different from false [2022-01-19 04:38:39,552 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 04:38:39,553 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 24 [2022-01-19 04:38:39,555 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 33 [2022-01-19 04:38:39,557 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-01-19 04:38:39,882 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-01-19 04:38:39,936 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 14 not checked. [2022-01-19 04:38:39,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [352024929] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 04:38:39,936 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 04:38:39,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 11] total 22 [2022-01-19 04:38:39,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845782147] [2022-01-19 04:38:39,937 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 04:38:39,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-19 04:38:39,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 04:38:39,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-19 04:38:39,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=333, Unknown=1, NotChecked=38, Total=462 [2022-01-19 04:38:39,939 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 93 [2022-01-19 04:38:39,940 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 1401 transitions, 19618 flow. Second operand has 22 states, 22 states have (on average 42.31818181818182) internal successors, (931), 22 states have internal predecessors, (931), 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 04:38:39,940 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 04:38:39,940 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 93 [2022-01-19 04:38:39,940 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 04:38:53,540 INFO L129 PetriNetUnfolder]: 16432/31046 cut-off events. [2022-01-19 04:38:53,541 INFO L130 PetriNetUnfolder]: For 1359755/1375427 co-relation queries the response was YES. [2022-01-19 04:38:54,028 INFO L84 FinitePrefix]: Finished finitePrefix Result has 265690 conditions, 31046 events. 16432/31046 cut-off events. For 1359755/1375427 co-relation queries the response was YES. Maximal size of possible extension queue 1341. Compared 286205 event pairs, 1745 based on Foata normal form. 407/31071 useless extension candidates. Maximal degree in co-relation 265583. Up to 7926 conditions per place. [2022-01-19 04:38:54,187 INFO L132 encePairwiseOnDemand]: 61/93 looper letters, 736 selfloop transitions, 1547 changer transitions 119/2449 dead transitions. [2022-01-19 04:38:54,187 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 2449 transitions, 42333 flow [2022-01-19 04:38:54,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-01-19 04:38:54,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2022-01-19 04:38:54,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 2799 transitions. [2022-01-19 04:38:54,192 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5678636640292148 [2022-01-19 04:38:54,192 INFO L72 ComplementDD]: Start complementDD. Operand 53 states and 2799 transitions. [2022-01-19 04:38:54,192 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 2799 transitions. [2022-01-19 04:38:54,193 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 04:38:54,193 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 53 states and 2799 transitions. [2022-01-19 04:38:54,197 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 54 states, 53 states have (on average 52.81132075471698) internal successors, (2799), 53 states have internal predecessors, (2799), 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 04:38:54,203 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 54 states, 54 states have (on average 93.0) internal successors, (5022), 54 states have internal predecessors, (5022), 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 04:38:54,204 INFO L81 ComplementDD]: Finished complementDD. Result has 54 states, 54 states have (on average 93.0) internal successors, (5022), 54 states have internal predecessors, (5022), 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 04:38:54,204 INFO L186 Difference]: Start difference. First operand has 325 places, 1401 transitions, 19618 flow. Second operand 53 states and 2799 transitions. [2022-01-19 04:38:54,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 2449 transitions, 42333 flow [2022-01-19 04:39:00,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 2449 transitions, 41369 flow, removed 430 selfloop flow, removed 8 redundant places. [2022-01-19 04:39:01,000 INFO L242 Difference]: Finished difference. Result has 390 places, 1968 transitions, 33314 flow [2022-01-19 04:39:01,001 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=19062, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1395, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=984, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=33314, PETRI_PLACES=390, PETRI_TRANSITIONS=1968} [2022-01-19 04:39:01,001 INFO L334 CegarLoopForPetriNet]: 91 programPoint places, 299 predicate places. [2022-01-19 04:39:01,002 INFO L470 AbstractCegarLoop]: Abstraction has has 390 places, 1968 transitions, 33314 flow [2022-01-19 04:39:01,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 42.31818181818182) internal successors, (931), 22 states have internal predecessors, (931), 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 04:39:01,002 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:39:01,002 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 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] [2022-01-19 04:39:01,025 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-01-19 04:39:01,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-01-19 04:39:01,215 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-19 04:39:01,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:39:01,216 INFO L85 PathProgramCache]: Analyzing trace with hash 419605210, now seen corresponding path program 2 times [2022-01-19 04:39:01,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:39:01,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588509915] [2022-01-19 04:39:01,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:39:01,216 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:39:01,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 04:39:01,376 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-19 04:39:01,376 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 04:39:01,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588509915] [2022-01-19 04:39:01,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588509915] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 04:39:01,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1675576282] [2022-01-19 04:39:01,376 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-19 04:39:01,377 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 04:39:01,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 04:39:01,378 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 04:39:01,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-19 04:39:01,480 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-19 04:39:01,480 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 04:39:01,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 38 conjunts are in the unsatisfiable core [2022-01-19 04:39:01,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 04:39:01,518 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-19 04:39:01,620 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-01-19 04:39:01,620 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-01-19 04:39:01,666 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-19 04:39:01,666 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-01-19 04:39:01,709 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-01-19 04:39:01,812 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2022-01-19 04:39:01,842 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-19 04:39:01,842 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 04:39:01,884 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_288 (Array Int Int))) (not (= (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t~1#1.base| v_ArrVal_288) |c_thr1Thread1of2ForFork0_~#l~0#1.base|) |c_thr1Thread1of2ForFork0_~#l~0#1.offset|) 4294967296) (mod c_~s~0 4294967296)))) is different from false [2022-01-19 04:39:01,912 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 04:39:01,912 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 24 [2022-01-19 04:39:01,914 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 33 [2022-01-19 04:39:01,922 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-01-19 04:39:02,309 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-01-19 04:39:02,360 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 14 not checked. [2022-01-19 04:39:02,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1675576282] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 04:39:02,361 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 04:39:02,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 11] total 21 [2022-01-19 04:39:02,361 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053248546] [2022-01-19 04:39:02,361 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 04:39:02,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-19 04:39:02,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 04:39:02,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-19 04:39:02,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=304, Unknown=1, NotChecked=36, Total=420 [2022-01-19 04:39:02,363 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 93 [2022-01-19 04:39:02,364 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 1968 transitions, 33314 flow. Second operand has 21 states, 21 states have (on average 42.285714285714285) internal successors, (888), 21 states have internal predecessors, (888), 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 04:39:02,364 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 04:39:02,364 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 93 [2022-01-19 04:39:02,364 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 04:39:04,151 WARN L838 $PredicateComparison]: unable to prove that (and (not (= (mod c_~c~0 4294967296) 1)) (= c_~s~0 0) (forall ((v_ArrVal_288 (Array Int Int))) (not (= (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t~1#1.base| v_ArrVal_288) |c_thr1Thread1of2ForFork0_~#l~0#1.base|) |c_thr1Thread1of2ForFork0_~#l~0#1.offset|) 4294967296) (mod c_~s~0 4294967296))))) is different from false [2022-01-19 04:39:05,043 WARN L838 $PredicateComparison]: unable to prove that (and (= (mod c_~c~0 4294967296) 1) (= c_~s~0 0) (forall ((v_ArrVal_288 (Array Int Int))) (not (= (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t~1#1.base| v_ArrVal_288) |c_thr1Thread1of2ForFork0_~#l~0#1.base|) |c_thr1Thread1of2ForFork0_~#l~0#1.offset|) 4294967296) (mod c_~s~0 4294967296))))) is different from false [2022-01-19 04:39:24,915 INFO L129 PetriNetUnfolder]: 26658/47150 cut-off events. [2022-01-19 04:39:24,915 INFO L130 PetriNetUnfolder]: For 3072094/3091585 co-relation queries the response was YES. [2022-01-19 04:39:26,070 INFO L84 FinitePrefix]: Finished finitePrefix Result has 493440 conditions, 47150 events. 26658/47150 cut-off events. For 3072094/3091585 co-relation queries the response was YES. Maximal size of possible extension queue 1777. Compared 424765 event pairs, 3010 based on Foata normal form. 501/47121 useless extension candidates. Maximal degree in co-relation 493309. Up to 14883 conditions per place. [2022-01-19 04:39:26,314 INFO L132 encePairwiseOnDemand]: 65/93 looper letters, 1387 selfloop transitions, 2823 changer transitions 98/4367 dead transitions. [2022-01-19 04:39:26,314 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 434 places, 4367 transitions, 90651 flow [2022-01-19 04:39:26,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-01-19 04:39:26,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2022-01-19 04:39:26,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 2735 transitions. [2022-01-19 04:39:26,318 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5548792858592007 [2022-01-19 04:39:26,318 INFO L72 ComplementDD]: Start complementDD. Operand 53 states and 2735 transitions. [2022-01-19 04:39:26,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 2735 transitions. [2022-01-19 04:39:26,319 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 04:39:26,319 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 53 states and 2735 transitions. [2022-01-19 04:39:26,323 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 54 states, 53 states have (on average 51.60377358490566) internal successors, (2735), 53 states have internal predecessors, (2735), 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 04:39:26,328 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 54 states, 54 states have (on average 93.0) internal successors, (5022), 54 states have internal predecessors, (5022), 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 04:39:26,330 INFO L81 ComplementDD]: Finished complementDD. Result has 54 states, 54 states have (on average 93.0) internal successors, (5022), 54 states have internal predecessors, (5022), 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 04:39:26,330 INFO L186 Difference]: Start difference. First operand has 390 places, 1968 transitions, 33314 flow. Second operand 53 states and 2735 transitions. [2022-01-19 04:39:26,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 434 places, 4367 transitions, 90651 flow [2022-01-19 04:39:55,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 4367 transitions, 88252 flow, removed 915 selfloop flow, removed 24 redundant places. [2022-01-19 04:39:55,941 INFO L242 Difference]: Finished difference. Result has 444 places, 3720 transitions, 78011 flow [2022-01-19 04:39:55,942 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=32220, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1951, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1195, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=454, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=78011, PETRI_PLACES=444, PETRI_TRANSITIONS=3720} [2022-01-19 04:39:55,943 INFO L334 CegarLoopForPetriNet]: 91 programPoint places, 353 predicate places. [2022-01-19 04:39:55,943 INFO L470 AbstractCegarLoop]: Abstraction has has 444 places, 3720 transitions, 78011 flow [2022-01-19 04:39:55,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 42.285714285714285) internal successors, (888), 21 states have internal predecessors, (888), 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 04:39:55,944 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:39:55,944 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 04:39:55,968 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-01-19 04:39:56,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-01-19 04:39:56,160 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-19 04:39:56,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:39:56,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1636048837, now seen corresponding path program 1 times [2022-01-19 04:39:56,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:39:56,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400970012] [2022-01-19 04:39:56,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:39:56,160 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:39:56,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 04:39:56,281 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-01-19 04:39:56,281 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 04:39:56,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400970012] [2022-01-19 04:39:56,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400970012] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 04:39:56,281 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 04:39:56,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 04:39:56,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526753686] [2022-01-19 04:39:56,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 04:39:56,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 04:39:56,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 04:39:56,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 04:39:56,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-19 04:39:56,284 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 93 [2022-01-19 04:39:56,285 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 3720 transitions, 78011 flow. Second operand has 7 states, 7 states have (on average 65.0) internal successors, (455), 7 states have internal predecessors, (455), 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 04:39:56,285 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 04:39:56,285 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 93 [2022-01-19 04:39:56,285 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 04:40:16,922 INFO L129 PetriNetUnfolder]: 19087/35947 cut-off events. [2022-01-19 04:40:16,922 INFO L130 PetriNetUnfolder]: For 2681969/2690652 co-relation queries the response was YES. [2022-01-19 04:40:17,971 INFO L84 FinitePrefix]: Finished finitePrefix Result has 415025 conditions, 35947 events. 19087/35947 cut-off events. For 2681969/2690652 co-relation queries the response was YES. Maximal size of possible extension queue 1450. Compared 334462 event pairs, 2443 based on Foata normal form. 912/35649 useless extension candidates. Maximal degree in co-relation 414873. Up to 9298 conditions per place. [2022-01-19 04:40:18,224 INFO L132 encePairwiseOnDemand]: 84/93 looper letters, 697 selfloop transitions, 1451 changer transitions 29/3723 dead transitions. [2022-01-19 04:40:18,224 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 446 places, 3723 transitions, 83180 flow [2022-01-19 04:40:18,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 04:40:18,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 04:40:18,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 518 transitions. [2022-01-19 04:40:18,226 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7956989247311828 [2022-01-19 04:40:18,226 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 518 transitions. [2022-01-19 04:40:18,226 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 518 transitions. [2022-01-19 04:40:18,226 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 04:40:18,226 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 518 transitions. [2022-01-19 04:40:18,227 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 74.0) internal successors, (518), 7 states have internal predecessors, (518), 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 04:40:18,228 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 93.0) internal successors, (744), 8 states have internal predecessors, (744), 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 04:40:18,228 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 93.0) internal successors, (744), 8 states have internal predecessors, (744), 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 04:40:18,228 INFO L186 Difference]: Start difference. First operand has 444 places, 3720 transitions, 78011 flow. Second operand 7 states and 518 transitions. [2022-01-19 04:40:18,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 446 places, 3723 transitions, 83180 flow [2022-01-19 04:40:48,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 3723 transitions, 81151 flow, removed 868 selfloop flow, removed 11 redundant places. [2022-01-19 04:40:48,530 INFO L242 Difference]: Finished difference. Result has 436 places, 3599 transitions, 76547 flow [2022-01-19 04:40:48,533 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=72751, PETRI_DIFFERENCE_MINUEND_PLACES=429, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3577, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1405, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=76547, PETRI_PLACES=436, PETRI_TRANSITIONS=3599} [2022-01-19 04:40:48,534 INFO L334 CegarLoopForPetriNet]: 91 programPoint places, 345 predicate places. [2022-01-19 04:40:48,534 INFO L470 AbstractCegarLoop]: Abstraction has has 436 places, 3599 transitions, 76547 flow [2022-01-19 04:40:48,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 65.0) internal successors, (455), 7 states have internal predecessors, (455), 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 04:40:48,534 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:40:48,534 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 04:40:48,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-19 04:40:48,534 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-19 04:40:48,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:40:48,535 INFO L85 PathProgramCache]: Analyzing trace with hash 419587341, now seen corresponding path program 1 times [2022-01-19 04:40:48,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:40:48,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083514381] [2022-01-19 04:40:48,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:40:48,535 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:40:48,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 04:40:48,705 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-01-19 04:40:48,706 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 04:40:48,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083514381] [2022-01-19 04:40:48,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083514381] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 04:40:48,706 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 04:40:48,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-19 04:40:48,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891113607] [2022-01-19 04:40:48,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 04:40:48,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-19 04:40:48,707 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 04:40:48,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-19 04:40:48,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-01-19 04:40:48,707 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 93 [2022-01-19 04:40:48,708 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 436 places, 3599 transitions, 76547 flow. Second operand has 9 states, 9 states have (on average 62.666666666666664) internal successors, (564), 9 states have internal predecessors, (564), 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 04:40:48,708 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 04:40:48,708 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 93 [2022-01-19 04:40:48,708 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 04:41:10,925 INFO L129 PetriNetUnfolder]: 19762/36965 cut-off events. [2022-01-19 04:41:10,925 INFO L130 PetriNetUnfolder]: For 2638595/2646966 co-relation queries the response was YES. [2022-01-19 04:41:12,093 INFO L84 FinitePrefix]: Finished finitePrefix Result has 423284 conditions, 36965 events. 19762/36965 cut-off events. For 2638595/2646966 co-relation queries the response was YES. Maximal size of possible extension queue 1456. Compared 344186 event pairs, 2662 based on Foata normal form. 507/36184 useless extension candidates. Maximal degree in co-relation 423134. Up to 10631 conditions per place. [2022-01-19 04:41:12,332 INFO L132 encePairwiseOnDemand]: 82/93 looper letters, 1100 selfloop transitions, 1120 changer transitions 12/3743 dead transitions. [2022-01-19 04:41:12,333 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 3743 transitions, 84567 flow [2022-01-19 04:41:12,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-19 04:41:12,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-01-19 04:41:12,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 640 transitions. [2022-01-19 04:41:12,334 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7646356033452808 [2022-01-19 04:41:12,334 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 640 transitions. [2022-01-19 04:41:12,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 640 transitions. [2022-01-19 04:41:12,334 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 04:41:12,334 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 640 transitions. [2022-01-19 04:41:12,335 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 71.11111111111111) internal successors, (640), 9 states have internal predecessors, (640), 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 04:41:12,336 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 93.0) internal successors, (930), 10 states have internal predecessors, (930), 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 04:41:12,336 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 93.0) internal successors, (930), 10 states have internal predecessors, (930), 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 04:41:12,336 INFO L186 Difference]: Start difference. First operand has 436 places, 3599 transitions, 76547 flow. Second operand 9 states and 640 transitions. [2022-01-19 04:41:12,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 3743 transitions, 84567 flow [2022-01-19 04:41:40,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 3743 transitions, 79307 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-01-19 04:41:40,580 INFO L242 Difference]: Finished difference. Result has 442 places, 3683 transitions, 75632 flow [2022-01-19 04:41:40,583 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=71547, PETRI_DIFFERENCE_MINUEND_PLACES=429, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3599, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1036, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2511, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=75632, PETRI_PLACES=442, PETRI_TRANSITIONS=3683} [2022-01-19 04:41:40,584 INFO L334 CegarLoopForPetriNet]: 91 programPoint places, 351 predicate places. [2022-01-19 04:41:40,584 INFO L470 AbstractCegarLoop]: Abstraction has has 442 places, 3683 transitions, 75632 flow [2022-01-19 04:41:40,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 62.666666666666664) internal successors, (564), 9 states have internal predecessors, (564), 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 04:41:40,584 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:41:40,584 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 04:41:40,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-19 04:41:40,585 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-19 04:41:40,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:41:40,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1788369931, now seen corresponding path program 2 times [2022-01-19 04:41:40,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:41:40,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106853246] [2022-01-19 04:41:40,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:41:40,585 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:41:40,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 04:41:40,733 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-01-19 04:41:40,733 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 04:41:40,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106853246] [2022-01-19 04:41:40,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106853246] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 04:41:40,733 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 04:41:40,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-19 04:41:40,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803601986] [2022-01-19 04:41:40,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 04:41:40,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-19 04:41:40,734 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 04:41:40,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-19 04:41:40,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-01-19 04:41:40,735 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 93 [2022-01-19 04:41:40,736 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 442 places, 3683 transitions, 75632 flow. Second operand has 9 states, 9 states have (on average 63.55555555555556) internal successors, (572), 9 states have internal predecessors, (572), 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 04:41:40,736 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 04:41:40,736 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 93 [2022-01-19 04:41:40,736 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 04:42:02,618 INFO L129 PetriNetUnfolder]: 19449/36286 cut-off events. [2022-01-19 04:42:02,618 INFO L130 PetriNetUnfolder]: For 2554909/2569856 co-relation queries the response was YES. [2022-01-19 04:42:03,417 INFO L84 FinitePrefix]: Finished finitePrefix Result has 416738 conditions, 36286 events. 19449/36286 cut-off events. For 2554909/2569856 co-relation queries the response was YES. Maximal size of possible extension queue 1423. Compared 335019 event pairs, 2662 based on Foata normal form. 506/35540 useless extension candidates. Maximal degree in co-relation 416583. Up to 10201 conditions per place. [2022-01-19 04:42:03,710 INFO L132 encePairwiseOnDemand]: 82/93 looper letters, 1207 selfloop transitions, 1114 changer transitions 14/3844 dead transitions. [2022-01-19 04:42:03,711 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 3844 transitions, 84134 flow [2022-01-19 04:42:03,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-19 04:42:03,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-01-19 04:42:03,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 643 transitions. [2022-01-19 04:42:03,712 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7682198327359617 [2022-01-19 04:42:03,712 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 643 transitions. [2022-01-19 04:42:03,712 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 643 transitions. [2022-01-19 04:42:03,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 04:42:03,712 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 643 transitions. [2022-01-19 04:42:03,714 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 71.44444444444444) internal successors, (643), 9 states have internal predecessors, (643), 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 04:42:03,715 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 93.0) internal successors, (930), 10 states have internal predecessors, (930), 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 04:42:03,715 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 93.0) internal successors, (930), 10 states have internal predecessors, (930), 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 04:42:03,715 INFO L186 Difference]: Start difference. First operand has 442 places, 3683 transitions, 75632 flow. Second operand 9 states and 643 transitions. [2022-01-19 04:42:03,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 3844 transitions, 84134 flow [2022-01-19 04:42:31,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 449 places, 3844 transitions, 83056 flow, removed 8 selfloop flow, removed 1 redundant places. [2022-01-19 04:42:31,598 INFO L242 Difference]: Finished difference. Result has 453 places, 3767 transitions, 78767 flow [2022-01-19 04:42:31,600 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=74600, PETRI_DIFFERENCE_MINUEND_PLACES=441, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3683, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1029, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2620, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=78767, PETRI_PLACES=453, PETRI_TRANSITIONS=3767} [2022-01-19 04:42:31,600 INFO L334 CegarLoopForPetriNet]: 91 programPoint places, 362 predicate places. [2022-01-19 04:42:31,600 INFO L470 AbstractCegarLoop]: Abstraction has has 453 places, 3767 transitions, 78767 flow [2022-01-19 04:42:31,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 63.55555555555556) internal successors, (572), 9 states have internal predecessors, (572), 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 04:42:31,601 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:42:31,601 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 04:42:31,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-19 04:42:31,601 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-19 04:42:31,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:42:31,601 INFO L85 PathProgramCache]: Analyzing trace with hash 2026973035, now seen corresponding path program 3 times [2022-01-19 04:42:31,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:42:31,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938170977] [2022-01-19 04:42:31,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:42:31,602 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:42:31,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 04:42:31,722 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-01-19 04:42:31,722 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 04:42:31,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938170977] [2022-01-19 04:42:31,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938170977] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 04:42:31,722 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 04:42:31,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-19 04:42:31,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439684622] [2022-01-19 04:42:31,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 04:42:31,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-19 04:42:31,723 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 04:42:31,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-19 04:42:31,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-01-19 04:42:31,724 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 93 [2022-01-19 04:42:31,724 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 453 places, 3767 transitions, 78767 flow. Second operand has 9 states, 9 states have (on average 55.22222222222222) internal successors, (497), 9 states have internal predecessors, (497), 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 04:42:31,724 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 04:42:31,724 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 93 [2022-01-19 04:42:31,725 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 04:42:55,312 INFO L129 PetriNetUnfolder]: 20998/38704 cut-off events. [2022-01-19 04:42:55,312 INFO L130 PetriNetUnfolder]: For 2703190/2712132 co-relation queries the response was YES. [2022-01-19 04:42:56,357 INFO L84 FinitePrefix]: Finished finitePrefix Result has 441698 conditions, 38704 events. 20998/38704 cut-off events. For 2703190/2712132 co-relation queries the response was YES. Maximal size of possible extension queue 1476. Compared 357140 event pairs, 3031 based on Foata normal form. 514/37917 useless extension candidates. Maximal degree in co-relation 441539. Up to 12567 conditions per place. [2022-01-19 04:42:56,574 INFO L132 encePairwiseOnDemand]: 82/93 looper letters, 1153 selfloop transitions, 1191 changer transitions 3/3842 dead transitions. [2022-01-19 04:42:56,575 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 460 places, 3842 transitions, 85624 flow [2022-01-19 04:42:56,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-19 04:42:56,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-01-19 04:42:56,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 522 transitions. [2022-01-19 04:42:56,576 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7016129032258065 [2022-01-19 04:42:56,576 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 522 transitions. [2022-01-19 04:42:56,576 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 522 transitions. [2022-01-19 04:42:56,576 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 04:42:56,576 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 522 transitions. [2022-01-19 04:42:56,577 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 65.25) internal successors, (522), 8 states have internal predecessors, (522), 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 04:42:56,578 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 93.0) internal successors, (837), 9 states have internal predecessors, (837), 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 04:42:56,578 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 93.0) internal successors, (837), 9 states have internal predecessors, (837), 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 04:42:56,578 INFO L186 Difference]: Start difference. First operand has 453 places, 3767 transitions, 78767 flow. Second operand 8 states and 522 transitions. [2022-01-19 04:42:56,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 460 places, 3842 transitions, 85624 flow [2022-01-19 04:43:29,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 457 places, 3842 transitions, 84527 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-01-19 04:43:29,614 INFO L242 Difference]: Finished difference. Result has 459 places, 3783 transitions, 80492 flow [2022-01-19 04:43:29,616 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=77686, PETRI_DIFFERENCE_MINUEND_PLACES=450, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3767, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1175, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2590, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=80492, PETRI_PLACES=459, PETRI_TRANSITIONS=3783} [2022-01-19 04:43:29,617 INFO L334 CegarLoopForPetriNet]: 91 programPoint places, 368 predicate places. [2022-01-19 04:43:29,617 INFO L470 AbstractCegarLoop]: Abstraction has has 459 places, 3783 transitions, 80492 flow [2022-01-19 04:43:29,617 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 55.22222222222222) internal successors, (497), 9 states have internal predecessors, (497), 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 04:43:29,617 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:43:29,617 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 04:43:29,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-19 04:43:29,617 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-19 04:43:29,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:43:29,618 INFO L85 PathProgramCache]: Analyzing trace with hash -955914997, now seen corresponding path program 4 times [2022-01-19 04:43:29,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:43:29,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847310271] [2022-01-19 04:43:29,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:43:29,618 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:43:29,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 04:43:29,725 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-19 04:43:29,725 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 04:43:29,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847310271] [2022-01-19 04:43:29,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847310271] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 04:43:29,725 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 04:43:29,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-19 04:43:29,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938366864] [2022-01-19 04:43:29,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 04:43:29,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-19 04:43:29,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 04:43:29,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-19 04:43:29,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-01-19 04:43:29,726 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 93 [2022-01-19 04:43:29,727 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 3783 transitions, 80492 flow. Second operand has 9 states, 9 states have (on average 56.111111111111114) internal successors, (505), 9 states have internal predecessors, (505), 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 04:43:29,727 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 04:43:29,727 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 93 [2022-01-19 04:43:29,727 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 04:43:53,017 INFO L129 PetriNetUnfolder]: 19814/36371 cut-off events. [2022-01-19 04:43:53,017 INFO L130 PetriNetUnfolder]: For 2625544/2647282 co-relation queries the response was YES. [2022-01-19 04:43:54,028 INFO L84 FinitePrefix]: Finished finitePrefix Result has 421120 conditions, 36371 events. 19814/36371 cut-off events. For 2625544/2647282 co-relation queries the response was YES. Maximal size of possible extension queue 1415. Compared 332339 event pairs, 2873 based on Foata normal form. 547/35776 useless extension candidates. Maximal degree in co-relation 420959. Up to 11818 conditions per place. [2022-01-19 04:43:54,233 INFO L132 encePairwiseOnDemand]: 82/93 looper letters, 1235 selfloop transitions, 1145 changer transitions 6/3868 dead transitions. [2022-01-19 04:43:54,233 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 466 places, 3868 transitions, 87401 flow [2022-01-19 04:43:54,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-19 04:43:54,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-01-19 04:43:54,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 525 transitions. [2022-01-19 04:43:54,234 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7056451612903226 [2022-01-19 04:43:54,234 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 525 transitions. [2022-01-19 04:43:54,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 525 transitions. [2022-01-19 04:43:54,234 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 04:43:54,235 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 525 transitions. [2022-01-19 04:43:54,235 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 65.625) internal successors, (525), 8 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 04:43:54,236 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 93.0) internal successors, (837), 9 states have internal predecessors, (837), 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 04:43:54,236 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 93.0) internal successors, (837), 9 states have internal predecessors, (837), 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 04:43:54,236 INFO L186 Difference]: Start difference. First operand has 459 places, 3783 transitions, 80492 flow. Second operand 8 states and 525 transitions. [2022-01-19 04:43:54,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 466 places, 3868 transitions, 87401 flow [2022-01-19 04:44:23,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 462 places, 3868 transitions, 86165 flow, removed 3 selfloop flow, removed 4 redundant places. [2022-01-19 04:44:23,939 INFO L242 Difference]: Finished difference. Result has 464 places, 3791 transitions, 81895 flow [2022-01-19 04:44:23,942 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=78867, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3763, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2645, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=81895, PETRI_PLACES=464, PETRI_TRANSITIONS=3791} [2022-01-19 04:44:23,943 INFO L334 CegarLoopForPetriNet]: 91 programPoint places, 373 predicate places. [2022-01-19 04:44:23,943 INFO L470 AbstractCegarLoop]: Abstraction has has 464 places, 3791 transitions, 81895 flow [2022-01-19 04:44:23,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 56.111111111111114) internal successors, (505), 9 states have internal predecessors, (505), 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 04:44:23,943 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:44:23,943 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 04:44:23,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-19 04:44:23,943 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-19 04:44:23,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:44:23,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1266892751, now seen corresponding path program 5 times [2022-01-19 04:44:23,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:44:23,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846770523] [2022-01-19 04:44:23,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:44:23,944 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:44:23,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 04:44:24,090 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-01-19 04:44:24,091 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 04:44:24,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846770523] [2022-01-19 04:44:24,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846770523] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 04:44:24,091 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 04:44:24,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 04:44:24,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172303756] [2022-01-19 04:44:24,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 04:44:24,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 04:44:24,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 04:44:24,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 04:44:24,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-01-19 04:44:24,092 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 93 [2022-01-19 04:44:24,093 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 464 places, 3791 transitions, 81895 flow. Second operand has 10 states, 10 states have (on average 54.0) internal successors, (540), 10 states have internal predecessors, (540), 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 04:44:24,093 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 04:44:24,093 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 93 [2022-01-19 04:44:24,093 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 04:44:50,517 INFO L129 PetriNetUnfolder]: 21257/38861 cut-off events. [2022-01-19 04:44:50,517 INFO L130 PetriNetUnfolder]: For 2871310/2880140 co-relation queries the response was YES. [2022-01-19 04:44:51,279 INFO L84 FinitePrefix]: Finished finitePrefix Result has 449543 conditions, 38861 events. 21257/38861 cut-off events. For 2871310/2880140 co-relation queries the response was YES. Maximal size of possible extension queue 1445. Compared 355089 event pairs, 3152 based on Foata normal form. 491/38110 useless extension candidates. Maximal degree in co-relation 449380. Up to 13109 conditions per place. [2022-01-19 04:44:51,506 INFO L132 encePairwiseOnDemand]: 81/93 looper letters, 1247 selfloop transitions, 1217 changer transitions 10/3954 dead transitions. [2022-01-19 04:44:51,506 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 473 places, 3954 transitions, 91092 flow [2022-01-19 04:44:51,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-19 04:44:51,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-19 04:44:51,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 620 transitions. [2022-01-19 04:44:51,507 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2022-01-19 04:44:51,507 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 620 transitions. [2022-01-19 04:44:51,507 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 620 transitions. [2022-01-19 04:44:51,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 04:44:51,507 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 620 transitions. [2022-01-19 04:44:51,508 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 62.0) internal successors, (620), 10 states have internal predecessors, (620), 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 04:44:51,509 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 93.0) internal successors, (1023), 11 states have internal predecessors, (1023), 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 04:44:51,509 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 93.0) internal successors, (1023), 11 states have internal predecessors, (1023), 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 04:44:51,509 INFO L186 Difference]: Start difference. First operand has 464 places, 3791 transitions, 81895 flow. Second operand 10 states and 620 transitions. [2022-01-19 04:44:51,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 473 places, 3954 transitions, 91092 flow [2022-01-19 04:45:25,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 469 places, 3954 transitions, 89786 flow, removed 41 selfloop flow, removed 4 redundant places. [2022-01-19 04:45:25,541 INFO L242 Difference]: Finished difference. Result has 472 places, 3896 transitions, 85796 flow [2022-01-19 04:45:25,544 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=80690, PETRI_DIFFERENCE_MINUEND_PLACES=460, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3791, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2621, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=85796, PETRI_PLACES=472, PETRI_TRANSITIONS=3896} [2022-01-19 04:45:25,544 INFO L334 CegarLoopForPetriNet]: 91 programPoint places, 381 predicate places. [2022-01-19 04:45:25,544 INFO L470 AbstractCegarLoop]: Abstraction has has 472 places, 3896 transitions, 85796 flow [2022-01-19 04:45:25,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 54.0) internal successors, (540), 10 states have internal predecessors, (540), 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 04:45:25,544 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:45:25,545 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 04:45:25,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-19 04:45:25,545 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-19 04:45:25,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:45:25,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1591641515, now seen corresponding path program 6 times [2022-01-19 04:45:25,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:45:25,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728156603] [2022-01-19 04:45:25,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:45:25,545 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:45:25,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 04:45:25,670 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-01-19 04:45:25,670 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 04:45:25,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728156603] [2022-01-19 04:45:25,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728156603] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 04:45:25,670 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 04:45:25,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-19 04:45:25,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332302238] [2022-01-19 04:45:25,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 04:45:25,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-19 04:45:25,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 04:45:25,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-19 04:45:25,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-01-19 04:45:25,672 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 93 [2022-01-19 04:45:25,672 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 472 places, 3896 transitions, 85796 flow. Second operand has 9 states, 9 states have (on average 55.22222222222222) internal successors, (497), 9 states have internal predecessors, (497), 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 04:45:25,672 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 04:45:25,672 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 93 [2022-01-19 04:45:25,672 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 04:45:50,226 INFO L129 PetriNetUnfolder]: 21024/38568 cut-off events. [2022-01-19 04:45:50,227 INFO L130 PetriNetUnfolder]: For 2872027/2880641 co-relation queries the response was YES. [2022-01-19 04:45:51,795 INFO L84 FinitePrefix]: Finished finitePrefix Result has 445714 conditions, 38568 events. 21024/38568 cut-off events. For 2872027/2880641 co-relation queries the response was YES. Maximal size of possible extension queue 1442. Compared 352894 event pairs, 3085 based on Foata normal form. 465/37766 useless extension candidates. Maximal degree in co-relation 445549. Up to 12346 conditions per place. [2022-01-19 04:45:52,372 INFO L132 encePairwiseOnDemand]: 82/93 looper letters, 1239 selfloop transitions, 1226 changer transitions 12/3965 dead transitions. [2022-01-19 04:45:52,373 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 479 places, 3965 transitions, 92733 flow [2022-01-19 04:45:52,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-19 04:45:52,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-01-19 04:45:52,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 518 transitions. [2022-01-19 04:45:52,374 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.696236559139785 [2022-01-19 04:45:52,374 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 518 transitions. [2022-01-19 04:45:52,374 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 518 transitions. [2022-01-19 04:45:52,375 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 04:45:52,375 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 518 transitions. [2022-01-19 04:45:52,375 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 64.75) internal successors, (518), 8 states have internal predecessors, (518), 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 04:45:52,376 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 93.0) internal successors, (837), 9 states have internal predecessors, (837), 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 04:45:52,376 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 93.0) internal successors, (837), 9 states have internal predecessors, (837), 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 04:45:52,376 INFO L186 Difference]: Start difference. First operand has 472 places, 3896 transitions, 85796 flow. Second operand 8 states and 518 transitions. [2022-01-19 04:45:52,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 479 places, 3965 transitions, 92733 flow [2022-01-19 04:46:25,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 476 places, 3965 transitions, 91557 flow, removed 3 selfloop flow, removed 3 redundant places. [2022-01-19 04:46:25,274 INFO L242 Difference]: Finished difference. Result has 478 places, 3904 transitions, 87348 flow [2022-01-19 04:46:25,276 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=84632, PETRI_DIFFERENCE_MINUEND_PLACES=469, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3896, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1215, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2680, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=87348, PETRI_PLACES=478, PETRI_TRANSITIONS=3904} [2022-01-19 04:46:25,276 INFO L334 CegarLoopForPetriNet]: 91 programPoint places, 387 predicate places. [2022-01-19 04:46:25,276 INFO L470 AbstractCegarLoop]: Abstraction has has 478 places, 3904 transitions, 87348 flow [2022-01-19 04:46:25,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 55.22222222222222) internal successors, (497), 9 states have internal predecessors, (497), 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 04:46:25,277 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:46:25,277 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 04:46:25,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-19 04:46:25,277 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-19 04:46:25,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:46:25,277 INFO L85 PathProgramCache]: Analyzing trace with hash -570025021, now seen corresponding path program 7 times [2022-01-19 04:46:25,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:46:25,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253691907] [2022-01-19 04:46:25,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:46:25,278 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:46:25,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 04:46:25,397 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-19 04:46:25,397 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 04:46:25,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253691907] [2022-01-19 04:46:25,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253691907] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 04:46:25,397 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 04:46:25,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-19 04:46:25,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214994440] [2022-01-19 04:46:25,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 04:46:25,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-19 04:46:25,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 04:46:25,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-19 04:46:25,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-01-19 04:46:25,399 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 93 [2022-01-19 04:46:25,399 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 478 places, 3904 transitions, 87348 flow. Second operand has 9 states, 9 states have (on average 63.55555555555556) internal successors, (572), 9 states have internal predecessors, (572), 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 04:46:25,399 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 04:46:25,399 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 93 [2022-01-19 04:46:25,400 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 04:46:48,339 INFO L129 PetriNetUnfolder]: 19767/36481 cut-off events. [2022-01-19 04:46:48,339 INFO L130 PetriNetUnfolder]: For 2873728/2886557 co-relation queries the response was YES. [2022-01-19 04:46:49,470 INFO L84 FinitePrefix]: Finished finitePrefix Result has 430140 conditions, 36481 events. 19767/36481 cut-off events. For 2873728/2886557 co-relation queries the response was YES. Maximal size of possible extension queue 1397. Compared 332732 event pairs, 2662 based on Foata normal form. 451/35757 useless extension candidates. Maximal degree in co-relation 429973. Up to 10123 conditions per place. [2022-01-19 04:46:49,693 INFO L132 encePairwiseOnDemand]: 82/93 looper letters, 1165 selfloop transitions, 1342 changer transitions 10/4020 dead transitions. [2022-01-19 04:46:49,693 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 486 places, 4020 transitions, 95581 flow [2022-01-19 04:46:49,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-19 04:46:49,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-01-19 04:46:49,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 647 transitions. [2022-01-19 04:46:49,694 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7729988052568698 [2022-01-19 04:46:49,694 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 647 transitions. [2022-01-19 04:46:49,694 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 647 transitions. [2022-01-19 04:46:49,695 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 04:46:49,695 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 647 transitions. [2022-01-19 04:46:49,695 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 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 04:46:49,696 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 93.0) internal successors, (930), 10 states have internal predecessors, (930), 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 04:46:49,696 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 93.0) internal successors, (930), 10 states have internal predecessors, (930), 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 04:46:49,697 INFO L186 Difference]: Start difference. First operand has 478 places, 3904 transitions, 87348 flow. Second operand 9 states and 647 transitions. [2022-01-19 04:46:49,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 486 places, 4020 transitions, 95581 flow [2022-01-19 04:47:21,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 483 places, 4020 transitions, 94237 flow, removed 55 selfloop flow, removed 3 redundant places. [2022-01-19 04:47:21,582 INFO L242 Difference]: Finished difference. Result has 485 places, 3931 transitions, 89575 flow [2022-01-19 04:47:21,585 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=86003, PETRI_DIFFERENCE_MINUEND_PLACES=475, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3903, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1310, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2591, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=89575, PETRI_PLACES=485, PETRI_TRANSITIONS=3931} [2022-01-19 04:47:21,585 INFO L334 CegarLoopForPetriNet]: 91 programPoint places, 394 predicate places. [2022-01-19 04:47:21,586 INFO L470 AbstractCegarLoop]: Abstraction has has 485 places, 3931 transitions, 89575 flow [2022-01-19 04:47:21,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 63.55555555555556) internal successors, (572), 9 states have internal predecessors, (572), 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 04:47:21,586 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:47:21,586 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 04:47:21,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-19 04:47:21,586 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-19 04:47:21,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:47:21,586 INFO L85 PathProgramCache]: Analyzing trace with hash -222643935, now seen corresponding path program 1 times [2022-01-19 04:47:21,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:47:21,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159074928] [2022-01-19 04:47:21,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:47:21,587 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:47:21,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 04:47:21,746 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-19 04:47:21,746 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 04:47:21,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159074928] [2022-01-19 04:47:21,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159074928] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 04:47:21,746 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 04:47:21,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-19 04:47:21,747 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556537021] [2022-01-19 04:47:21,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 04:47:21,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-19 04:47:21,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 04:47:21,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-19 04:47:21,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-01-19 04:47:21,748 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 93 [2022-01-19 04:47:21,748 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 485 places, 3931 transitions, 89575 flow. Second operand has 9 states, 9 states have (on average 56.111111111111114) internal successors, (505), 9 states have internal predecessors, (505), 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 04:47:21,748 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 04:47:21,748 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 93 [2022-01-19 04:47:21,748 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 04:47:47,130 INFO L129 PetriNetUnfolder]: 20403/37202 cut-off events. [2022-01-19 04:47:47,131 INFO L130 PetriNetUnfolder]: For 2938718/2961346 co-relation queries the response was YES. [2022-01-19 04:47:48,611 INFO L84 FinitePrefix]: Finished finitePrefix Result has 438565 conditions, 37202 events. 20403/37202 cut-off events. For 2938718/2961346 co-relation queries the response was YES. Maximal size of possible extension queue 1433. Compared 339305 event pairs, 2959 based on Foata normal form. 521/36637 useless extension candidates. Maximal degree in co-relation 438397. Up to 11894 conditions per place. [2022-01-19 04:47:48,835 INFO L132 encePairwiseOnDemand]: 82/93 looper letters, 1052 selfloop transitions, 1511 changer transitions 5/4050 dead transitions. [2022-01-19 04:47:48,835 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 493 places, 4050 transitions, 97743 flow [2022-01-19 04:47:48,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-19 04:47:48,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-01-19 04:47:48,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 596 transitions. [2022-01-19 04:47:48,836 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7120669056152927 [2022-01-19 04:47:48,836 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 596 transitions. [2022-01-19 04:47:48,837 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 596 transitions. [2022-01-19 04:47:48,837 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 04:47:48,837 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 596 transitions. [2022-01-19 04:47:48,837 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 66.22222222222223) internal successors, (596), 9 states have internal predecessors, (596), 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 04:47:48,838 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 93.0) internal successors, (930), 10 states have internal predecessors, (930), 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 04:47:48,838 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 93.0) internal successors, (930), 10 states have internal predecessors, (930), 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 04:47:48,838 INFO L186 Difference]: Start difference. First operand has 485 places, 3931 transitions, 89575 flow. Second operand 9 states and 596 transitions. [2022-01-19 04:47:48,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 493 places, 4050 transitions, 97743 flow [2022-01-19 04:48:21,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 488 places, 4050 transitions, 95158 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-01-19 04:48:21,803 INFO L242 Difference]: Finished difference. Result has 490 places, 3951 transitions, 90804 flow [2022-01-19 04:48:21,805 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=86996, PETRI_DIFFERENCE_MINUEND_PLACES=480, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3930, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1490, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2438, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=90804, PETRI_PLACES=490, PETRI_TRANSITIONS=3951} [2022-01-19 04:48:21,806 INFO L334 CegarLoopForPetriNet]: 91 programPoint places, 399 predicate places. [2022-01-19 04:48:21,806 INFO L470 AbstractCegarLoop]: Abstraction has has 490 places, 3951 transitions, 90804 flow [2022-01-19 04:48:21,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 56.111111111111114) internal successors, (505), 9 states have internal predecessors, (505), 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 04:48:21,806 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:48:21,806 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 04:48:21,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-19 04:48:21,807 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-19 04:48:21,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:48:21,807 INFO L85 PathProgramCache]: Analyzing trace with hash 258793453, now seen corresponding path program 2 times [2022-01-19 04:48:21,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:48:21,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266183613] [2022-01-19 04:48:21,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:48:21,807 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:48:21,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 04:48:21,880 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-01-19 04:48:21,881 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 04:48:21,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266183613] [2022-01-19 04:48:21,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266183613] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 04:48:21,881 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 04:48:21,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 04:48:21,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078725] [2022-01-19 04:48:21,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 04:48:21,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 04:48:21,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 04:48:21,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 04:48:21,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-19 04:48:21,882 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 93 [2022-01-19 04:48:21,883 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 490 places, 3951 transitions, 90804 flow. Second operand has 7 states, 7 states have (on average 65.85714285714286) internal successors, (461), 7 states have internal predecessors, (461), 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 04:48:21,883 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 04:48:21,883 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 93 [2022-01-19 04:48:21,883 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 04:48:44,217 INFO L129 PetriNetUnfolder]: 18896/34515 cut-off events. [2022-01-19 04:48:44,217 INFO L130 PetriNetUnfolder]: For 2869173/2881144 co-relation queries the response was YES. [2022-01-19 04:48:45,181 INFO L84 FinitePrefix]: Finished finitePrefix Result has 414966 conditions, 34515 events. 18896/34515 cut-off events. For 2869173/2881144 co-relation queries the response was YES. Maximal size of possible extension queue 1287. Compared 308926 event pairs, 2332 based on Foata normal form. 517/33933 useless extension candidates. Maximal degree in co-relation 414796. Up to 9206 conditions per place. [2022-01-19 04:48:45,570 INFO L132 encePairwiseOnDemand]: 84/93 looper letters, 732 selfloop transitions, 1805 changer transitions 9/4061 dead transitions. [2022-01-19 04:48:45,570 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 496 places, 4061 transitions, 99112 flow [2022-01-19 04:48:45,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 04:48:45,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 04:48:45,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 521 transitions. [2022-01-19 04:48:45,572 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8003072196620584 [2022-01-19 04:48:45,572 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 521 transitions. [2022-01-19 04:48:45,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 521 transitions. [2022-01-19 04:48:45,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 04:48:45,573 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 521 transitions. [2022-01-19 04:48:45,573 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 74.42857142857143) internal successors, (521), 7 states have internal predecessors, (521), 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 04:48:45,574 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 93.0) internal successors, (744), 8 states have internal predecessors, (744), 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 04:48:45,574 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 93.0) internal successors, (744), 8 states have internal predecessors, (744), 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 04:48:45,574 INFO L186 Difference]: Start difference. First operand has 490 places, 3951 transitions, 90804 flow. Second operand 7 states and 521 transitions. [2022-01-19 04:48:45,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 496 places, 4061 transitions, 99112 flow [2022-01-19 04:49:14,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 492 places, 4061 transitions, 97784 flow, removed 4 selfloop flow, removed 4 redundant places. [2022-01-19 04:49:14,901 INFO L242 Difference]: Finished difference. Result has 493 places, 3951 transitions, 93535 flow [2022-01-19 04:49:14,903 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=88184, PETRI_DIFFERENCE_MINUEND_PLACES=486, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3906, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1753, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=93535, PETRI_PLACES=493, PETRI_TRANSITIONS=3951} [2022-01-19 04:49:14,903 INFO L334 CegarLoopForPetriNet]: 91 programPoint places, 402 predicate places. [2022-01-19 04:49:14,903 INFO L470 AbstractCegarLoop]: Abstraction has has 493 places, 3951 transitions, 93535 flow [2022-01-19 04:49:14,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 65.85714285714286) internal successors, (461), 7 states have internal predecessors, (461), 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 04:49:14,904 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:49:14,904 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 04:49:14,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-19 04:49:14,904 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-19 04:49:14,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:49:14,904 INFO L85 PathProgramCache]: Analyzing trace with hash 72398367, now seen corresponding path program 3 times [2022-01-19 04:49:14,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:49:14,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035369347] [2022-01-19 04:49:14,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:49:14,904 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:49:14,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 04:49:15,054 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-19 04:49:15,054 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 04:49:15,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035369347] [2022-01-19 04:49:15,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035369347] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 04:49:15,055 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 04:49:15,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 04:49:15,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704264689] [2022-01-19 04:49:15,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 04:49:15,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 04:49:15,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 04:49:15,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 04:49:15,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-01-19 04:49:15,056 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 93 [2022-01-19 04:49:15,057 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 493 places, 3951 transitions, 93535 flow. Second operand has 11 states, 11 states have (on average 53.90909090909091) internal successors, (593), 11 states have internal predecessors, (593), 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 04:49:15,057 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 04:49:15,057 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 93 [2022-01-19 04:49:15,057 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 04:49:41,841 INFO L129 PetriNetUnfolder]: 21290/38645 cut-off events. [2022-01-19 04:49:41,842 INFO L130 PetriNetUnfolder]: For 3173133/3181140 co-relation queries the response was YES. [2022-01-19 04:49:43,299 INFO L84 FinitePrefix]: Finished finitePrefix Result has 458539 conditions, 38645 events. 21290/38645 cut-off events. For 3173133/3181140 co-relation queries the response was YES. Maximal size of possible extension queue 1365. Compared 350092 event pairs, 3110 based on Foata normal form. 506/37972 useless extension candidates. Maximal degree in co-relation 458369. Up to 12844 conditions per place. [2022-01-19 04:49:43,515 INFO L132 encePairwiseOnDemand]: 81/93 looper letters, 1386 selfloop transitions, 1348 changer transitions 1/4206 dead transitions. [2022-01-19 04:49:43,515 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 501 places, 4206 transitions, 105697 flow [2022-01-19 04:49:43,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-19 04:49:43,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-01-19 04:49:43,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 565 transitions. [2022-01-19 04:49:43,516 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6750298685782556 [2022-01-19 04:49:43,516 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 565 transitions. [2022-01-19 04:49:43,516 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 565 transitions. [2022-01-19 04:49:43,517 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 04:49:43,517 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 565 transitions. [2022-01-19 04:49:43,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 62.77777777777778) internal successors, (565), 9 states have internal predecessors, (565), 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 04:49:43,518 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 93.0) internal successors, (930), 10 states have internal predecessors, (930), 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 04:49:43,518 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 93.0) internal successors, (930), 10 states have internal predecessors, (930), 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 04:49:43,518 INFO L186 Difference]: Start difference. First operand has 493 places, 3951 transitions, 93535 flow. Second operand 9 states and 565 transitions. [2022-01-19 04:49:43,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 501 places, 4206 transitions, 105697 flow [2022-01-19 04:50:23,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 497 places, 4206 transitions, 103205 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-01-19 04:50:23,931 INFO L242 Difference]: Finished difference. Result has 500 places, 4072 transitions, 97615 flow [2022-01-19 04:50:23,934 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=91234, PETRI_DIFFERENCE_MINUEND_PLACES=489, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3951, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1226, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2679, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=97615, PETRI_PLACES=500, PETRI_TRANSITIONS=4072} [2022-01-19 04:50:23,934 INFO L334 CegarLoopForPetriNet]: 91 programPoint places, 409 predicate places. [2022-01-19 04:50:23,935 INFO L470 AbstractCegarLoop]: Abstraction has has 500 places, 4072 transitions, 97615 flow [2022-01-19 04:50:23,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 53.90909090909091) internal successors, (593), 11 states have internal predecessors, (593), 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 04:50:23,935 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:50:23,935 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 04:50:23,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-19 04:50:23,935 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-19 04:50:23,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:50:23,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1319160025, now seen corresponding path program 8 times [2022-01-19 04:50:23,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:50:23,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332392754] [2022-01-19 04:50:23,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:50:23,936 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:50:23,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 04:50:24,026 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-01-19 04:50:24,027 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 04:50:24,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332392754] [2022-01-19 04:50:24,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332392754] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 04:50:24,027 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 04:50:24,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 04:50:24,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235163168] [2022-01-19 04:50:24,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 04:50:24,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 04:50:24,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 04:50:24,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 04:50:24,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-19 04:50:24,030 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 93 [2022-01-19 04:50:24,030 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 500 places, 4072 transitions, 97615 flow. Second operand has 7 states, 7 states have (on average 65.85714285714286) internal successors, (461), 7 states have internal predecessors, (461), 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 04:50:24,030 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 04:50:24,030 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 93 [2022-01-19 04:50:24,030 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 04:50:44,083 INFO L129 PetriNetUnfolder]: 15109/27325 cut-off events. [2022-01-19 04:50:44,084 INFO L130 PetriNetUnfolder]: For 2452654/2465250 co-relation queries the response was YES. [2022-01-19 04:50:44,665 INFO L84 FinitePrefix]: Finished finitePrefix Result has 338723 conditions, 27325 events. 15109/27325 cut-off events. For 2452654/2465250 co-relation queries the response was YES. Maximal size of possible extension queue 1093. Compared 231706 event pairs, 1736 based on Foata normal form. 615/27001 useless extension candidates. Maximal degree in co-relation 338550. Up to 7817 conditions per place. [2022-01-19 04:50:45,012 INFO L132 encePairwiseOnDemand]: 84/93 looper letters, 671 selfloop transitions, 1813 changer transitions 15/3887 dead transitions. [2022-01-19 04:50:45,012 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 506 places, 3887 transitions, 98410 flow [2022-01-19 04:50:45,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 04:50:45,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 04:50:45,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 521 transitions. [2022-01-19 04:50:45,013 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8003072196620584 [2022-01-19 04:50:45,013 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 521 transitions. [2022-01-19 04:50:45,013 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 521 transitions. [2022-01-19 04:50:45,013 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 04:50:45,013 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 521 transitions. [2022-01-19 04:50:45,014 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 74.42857142857143) internal successors, (521), 7 states have internal predecessors, (521), 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 04:50:45,014 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 93.0) internal successors, (744), 8 states have internal predecessors, (744), 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 04:50:45,014 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 93.0) internal successors, (744), 8 states have internal predecessors, (744), 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 04:50:45,014 INFO L186 Difference]: Start difference. First operand has 500 places, 4072 transitions, 97615 flow. Second operand 7 states and 521 transitions. [2022-01-19 04:50:45,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 506 places, 3887 transitions, 98410 flow [2022-01-19 04:51:08,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 503 places, 3887 transitions, 97193 flow, removed 9 selfloop flow, removed 3 redundant places. [2022-01-19 04:51:08,393 INFO L242 Difference]: Finished difference. Result has 504 places, 3782 transitions, 93550 flow [2022-01-19 04:51:08,396 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=93, PETRI_DIFFERENCE_MINUEND_FLOW=89494, PETRI_DIFFERENCE_MINUEND_PLACES=497, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3797, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1813, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1984, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=93550, PETRI_PLACES=504, PETRI_TRANSITIONS=3782} [2022-01-19 04:51:08,396 INFO L334 CegarLoopForPetriNet]: 91 programPoint places, 413 predicate places. [2022-01-19 04:51:08,396 INFO L470 AbstractCegarLoop]: Abstraction has has 504 places, 3782 transitions, 93550 flow [2022-01-19 04:51:08,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 65.85714285714286) internal successors, (461), 7 states have internal predecessors, (461), 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 04:51:08,397 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:51:08,397 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 04:51:08,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-19 04:51:08,397 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-19 04:51:08,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:51:08,397 INFO L85 PathProgramCache]: Analyzing trace with hash 455308423, now seen corresponding path program 4 times [2022-01-19 04:51:08,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:51:08,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782392388] [2022-01-19 04:51:08,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:51:08,398 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:51:08,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 04:51:08,525 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-01-19 04:51:08,525 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 04:51:08,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782392388] [2022-01-19 04:51:08,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782392388] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 04:51:08,525 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 04:51:08,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-19 04:51:08,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495304640] [2022-01-19 04:51:08,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 04:51:08,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-19 04:51:08,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 04:51:08,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-19 04:51:08,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-01-19 04:51:08,527 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 93 [2022-01-19 04:51:08,527 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 504 places, 3782 transitions, 93550 flow. Second operand has 9 states, 9 states have (on average 56.111111111111114) internal successors, (505), 9 states have internal predecessors, (505), 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 04:51:08,527 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 04:51:08,528 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 93 [2022-01-19 04:51:08,528 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2022-01-19 04:51:23,763 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-01-19 04:51:24,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-19 04:51:24,062 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-01-19 04:51:24,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-19 04:51:24,062 WARN L594 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (9states, 54/93 universal loopers) in iteration 23,while PetriNetUnfolder was constructing finite prefix that currently has 263986 conditions, 18702 events (11506/18701 cut-off events. For 1922220/1946245 co-relation queries the response was YES. Maximal size of possible extension queue 1210. Compared 146874 event pairs, 895 based on Foata normal form. 308/19278 useless extension candidates. Maximal degree in co-relation 263813. Up to 7548 conditions per place.). [2022-01-19 04:51:24,062 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2022-01-19 04:51:24,063 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2022-01-19 04:51:24,063 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2022-01-19 04:51:24,063 INFO L732 BasicCegarLoop]: Path program histogram: [8, 4, 4, 2, 2, 1, 1, 1] [2022-01-19 04:51:24,063 INFO L309 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT (1/2) [2022-01-19 04:51:24,064 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2022-01-19 04:51:24,064 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 04:51:24,064 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-19 04:51:24,064 WARN L594 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was constructing initial abstraction,while executing CegarLoopForPetriNet. [2022-01-19 04:51:24,064 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (0 of 1 remaining) [2022-01-19 04:51:24,065 INFO L732 BasicCegarLoop]: Path program histogram: [] [2022-01-19 04:51:24,065 INFO L309 ceAbstractionStarter]: Result for error location InUseError was TIMEOUT (2/2) [2022-01-19 04:51:24,065 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2022-01-19 04:51:24,065 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-19 04:51:24,070 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.01 04:51:24 BasicIcfg [2022-01-19 04:51:24,070 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-19 04:51:24,070 INFO L158 Benchmark]: Toolchain (without parser) took 794783.17ms. Allocated memory was 388.0MB in the beginning and 13.2GB in the end (delta: 12.8GB). Free memory was 328.7MB in the beginning and 10.2GB in the end (delta: -9.8GB). Peak memory consumption was 3.0GB. Max. memory is 16.0GB. [2022-01-19 04:51:24,071 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 388.0MB. Free memory is still 346.6MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-19 04:51:24,071 INFO L158 Benchmark]: CACSL2BoogieTranslator took 459.43ms. Allocated memory was 388.0MB in the beginning and 505.4MB in the end (delta: 117.4MB). Free memory was 328.6MB in the beginning and 466.3MB in the end (delta: -137.7MB). Peak memory consumption was 7.5MB. Max. memory is 16.0GB. [2022-01-19 04:51:24,071 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.25ms. Allocated memory is still 505.4MB. Free memory was 466.3MB in the beginning and 464.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-19 04:51:24,071 INFO L158 Benchmark]: Boogie Preprocessor took 49.76ms. Allocated memory is still 505.4MB. Free memory was 464.2MB in the beginning and 462.3MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-19 04:51:24,072 INFO L158 Benchmark]: RCFGBuilder took 440.56ms. Allocated memory is still 505.4MB. Free memory was 462.3MB in the beginning and 444.4MB in the end (delta: 17.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2022-01-19 04:51:24,073 INFO L158 Benchmark]: TraceAbstraction took 793778.50ms. Allocated memory was 505.4MB in the beginning and 13.2GB in the end (delta: 12.7GB). Free memory was 444.4MB in the beginning and 10.2GB in the end (delta: -9.7GB). Peak memory consumption was 3.0GB. Max. memory is 16.0GB. [2022-01-19 04:51:24,074 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 388.0MB. Free memory is still 346.6MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 459.43ms. Allocated memory was 388.0MB in the beginning and 505.4MB in the end (delta: 117.4MB). Free memory was 328.6MB in the beginning and 466.3MB in the end (delta: -137.7MB). Peak memory consumption was 7.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 47.25ms. Allocated memory is still 505.4MB. Free memory was 466.3MB in the beginning and 464.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 49.76ms. Allocated memory is still 505.4MB. Free memory was 464.2MB in the beginning and 462.3MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 440.56ms. Allocated memory is still 505.4MB. Free memory was 462.3MB in the beginning and 444.4MB in the end (delta: 17.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * TraceAbstraction took 793778.50ms. Allocated memory was 505.4MB in the beginning and 13.2GB in the end (delta: 12.7GB). Free memory was 444.4MB in the beginning and 10.2GB in the end (delta: -9.7GB). Peak memory consumption was 3.0GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 718]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (9states, 54/93 universal loopers) in iteration 23,while PetriNetUnfolder was constructing finite prefix that currently has 263986 conditions, 18702 events (11506/18701 cut-off events. For 1922220/1946245 co-relation queries the response was YES. Maximal size of possible extension queue 1210. Compared 146874 event pairs, 895 based on Foata normal form. 308/19278 useless extension candidates. Maximal degree in co-relation 263813. Up to 7548 conditions per place.). - TimeoutResultAtElement [Line: 718]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (9states, 54/93 universal loopers) in iteration 23,while PetriNetUnfolder was constructing finite prefix that currently has 263986 conditions, 18702 events (11506/18701 cut-off events. For 1922220/1946245 co-relation queries the response was YES. Maximal size of possible extension queue 1210. Compared 146874 event pairs, 895 based on Foata normal form. 308/19278 useless extension candidates. Maximal degree in co-relation 263813. Up to 7548 conditions per place.). - TimeoutResultAtElement [Line: 725]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was constructing initial abstraction,while executing CegarLoopForPetriNet. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 87 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.9s, OverallIterations: 4, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 136 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 136 mSDsluCounter, 219 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 35 IncrementalHoareTripleChecker+Unchecked, 182 mSDsCounter, 25 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 330 IncrementalHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 25 mSolverCounterUnsat, 57 mSDtfsCounter, 330 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 125 GetRequests, 88 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=175occurred in iteration=3, InterpolantAutomatonStates: 42, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 196 NumberOfCodeBlocks, 196 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 236 ConstructedInterpolants, 12 QuantifiedInterpolants, 1342 SizeOfPredicates, 13 NumberOfNonLiveVariables, 162 ConjunctsInSsa, 31 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 2/8 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 4 procedures, 103 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 790.7s, OverallIterations: 23, TraceHistogramMax: 3, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 781.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3857 SdHoareTripleChecker+Valid, 7.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3857 mSDsluCounter, 4972 SdHoareTripleChecker+Invalid, 6.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 3216 IncrementalHoareTripleChecker+Unchecked, 4571 mSDsCounter, 977 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 9661 IncrementalHoareTripleChecker+Invalid, 13854 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 977 mSolverCounterUnsat, 733 mSDtfsCounter, 9661 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 968 GetRequests, 526 SyntacticMatches, 20 SemanticMatches, 422 ConstructedPredicates, 7 IntricatePredicates, 7 DeprecatedPredicates, 6872 ImplicationChecksByTransitivity, 6.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=97615occurred in iteration=21, InterpolantAutomatonStates: 377, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 7.2s InterpolantComputationTime, 1490 NumberOfCodeBlocks, 1481 NumberOfCodeBlocksAsserted, 32 NumberOfCheckSat, 1727 ConstructedInterpolants, 139 QuantifiedInterpolants, 15788 SizeOfPredicates, 61 NumberOfNonLiveVariables, 898 ConjunctsInSsa, 186 ConjunctsInUnsatCore, 33 InterpolantComputations, 18 PerfectInterpolantSequences, 282/495 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 1 thread instances CFG has 3 procedures, 87 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=155occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 32 NumberOfCodeBlocks, 32 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 2 thread instances CFG has 4 procedures, 103 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 0.0s, OverallIterations: 0, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown