/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.error.function.in.sv-comp.mode false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/pthread-divine/ring_2w1r-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-53ca081-m [2022-09-16 11:39:05,160 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-16 11:39:05,162 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-16 11:39:05,208 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-16 11:39:05,209 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-16 11:39:05,210 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-16 11:39:05,211 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-16 11:39:05,212 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-16 11:39:05,214 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-16 11:39:05,214 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-16 11:39:05,215 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-16 11:39:05,216 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-16 11:39:05,216 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-16 11:39:05,217 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-16 11:39:05,218 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-16 11:39:05,219 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-16 11:39:05,220 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-16 11:39:05,221 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-16 11:39:05,222 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-16 11:39:05,224 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-16 11:39:05,226 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-16 11:39:05,232 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-16 11:39:05,236 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-16 11:39:05,237 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-16 11:39:05,245 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-16 11:39:05,246 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-16 11:39:05,246 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-16 11:39:05,246 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-16 11:39:05,247 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-16 11:39:05,248 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-16 11:39:05,248 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-16 11:39:05,248 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-16 11:39:05,249 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-16 11:39:05,250 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-16 11:39:05,250 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-16 11:39:05,251 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-16 11:39:05,251 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-16 11:39:05,251 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-16 11:39:05,252 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-16 11:39:05,252 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-16 11:39:05,253 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-16 11:39:05,260 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-09-16 11:39:05,278 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-16 11:39:05,278 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-16 11:39:05,279 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-16 11:39:05,279 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-16 11:39:05,279 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-16 11:39:05,279 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-16 11:39:05,280 INFO L138 SettingsManager]: * Use SBE=true [2022-09-16 11:39:05,280 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-16 11:39:05,280 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-16 11:39:05,280 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-16 11:39:05,280 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-16 11:39:05,280 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-16 11:39:05,281 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-16 11:39:05,281 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-16 11:39:05,281 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-16 11:39:05,281 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-16 11:39:05,281 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-16 11:39:05,281 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-16 11:39:05,282 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-16 11:39:05,282 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-16 11:39:05,282 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-16 11:39:05,282 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-16 11:39:05,282 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-16 11:39:05,284 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:39:05,284 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-16 11:39:05,285 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-16 11:39:05,286 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-16 11:39:05,286 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-16 11:39:05,287 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-16 11:39:05,287 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-16 11:39:05,287 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-16 11:39:05,287 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of error function in SV-COMP mode -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2022-09-16 11:39:05,516 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-16 11:39:05,543 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-16 11:39:05,545 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-16 11:39:05,546 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-16 11:39:05,548 INFO L275 PluginConnector]: CDTParser initialized [2022-09-16 11:39:05,549 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-divine/ring_2w1r-1.i [2022-09-16 11:39:05,603 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52db79025/11fbe51e02d447a8a8598a7e50a119fc/FLAGaec2391c2 [2022-09-16 11:39:06,087 INFO L306 CDTParser]: Found 1 translation units. [2022-09-16 11:39:06,088 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/ring_2w1r-1.i [2022-09-16 11:39:06,106 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52db79025/11fbe51e02d447a8a8598a7e50a119fc/FLAGaec2391c2 [2022-09-16 11:39:06,124 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52db79025/11fbe51e02d447a8a8598a7e50a119fc [2022-09-16 11:39:06,127 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-16 11:39:06,130 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-16 11:39:06,133 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-16 11:39:06,133 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-16 11:39:06,136 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-16 11:39:06,136 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:39:06" (1/1) ... [2022-09-16 11:39:06,137 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e0289dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:39:06, skipping insertion in model container [2022-09-16 11:39:06,137 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:39:06" (1/1) ... [2022-09-16 11:39:06,144 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-16 11:39:06,222 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-16 11:39:06,385 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-09-16 11:39:06,591 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-divine/ring_2w1r-1.i[39095,39108] [2022-09-16 11:39:06,593 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-divine/ring_2w1r-1.i[39180,39193] [2022-09-16 11:39:06,593 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-divine/ring_2w1r-1.i[39232,39245] [2022-09-16 11:39:06,635 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-divine/ring_2w1r-1.i[49388,49401] [2022-09-16 11:39:06,636 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-divine/ring_2w1r-1.i[49437,49450] [2022-09-16 11:39:06,637 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-divine/ring_2w1r-1.i[49565,49578] [2022-09-16 11:39:06,638 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-divine/ring_2w1r-1.i[49623,49636] [2022-09-16 11:39:06,642 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:39:06,653 INFO L203 MainTranslator]: Completed pre-run [2022-09-16 11:39:06,662 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-09-16 11:39:06,703 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-divine/ring_2w1r-1.i[39095,39108] [2022-09-16 11:39:06,706 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-divine/ring_2w1r-1.i[39180,39193] [2022-09-16 11:39:06,707 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-divine/ring_2w1r-1.i[39232,39245] [2022-09-16 11:39:06,720 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-divine/ring_2w1r-1.i[49388,49401] [2022-09-16 11:39:06,721 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-divine/ring_2w1r-1.i[49437,49450] [2022-09-16 11:39:06,722 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-divine/ring_2w1r-1.i[49565,49578] [2022-09-16 11:39:06,722 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-divine/ring_2w1r-1.i[49623,49636] [2022-09-16 11:39:06,726 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:39:06,781 INFO L208 MainTranslator]: Completed translation [2022-09-16 11:39:06,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:39:06 WrapperNode [2022-09-16 11:39:06,782 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-16 11:39:06,783 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-16 11:39:06,783 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-16 11:39:06,784 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-16 11:39:06,792 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:39:06" (1/1) ... [2022-09-16 11:39:06,817 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:39:06" (1/1) ... [2022-09-16 11:39:06,844 INFO L138 Inliner]: procedures = 310, calls = 70, calls flagged for inlining = 10, calls inlined = 8, statements flattened = 229 [2022-09-16 11:39:06,844 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-16 11:39:06,845 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-16 11:39:06,845 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-16 11:39:06,845 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-16 11:39:06,853 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:39:06" (1/1) ... [2022-09-16 11:39:06,853 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:39:06" (1/1) ... [2022-09-16 11:39:06,857 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:39:06" (1/1) ... [2022-09-16 11:39:06,857 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:39:06" (1/1) ... [2022-09-16 11:39:06,883 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:39:06" (1/1) ... [2022-09-16 11:39:06,887 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:39:06" (1/1) ... [2022-09-16 11:39:06,889 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:39:06" (1/1) ... [2022-09-16 11:39:06,892 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-16 11:39:06,893 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-16 11:39:06,893 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-16 11:39:06,893 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-16 11:39:06,903 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:39:06" (1/1) ... [2022-09-16 11:39:06,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:39:06,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:39:06,928 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) [2022-09-16 11:39:06,954 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 [2022-09-16 11:39:06,968 INFO L130 BoogieDeclarations]: Found specification of procedure reader_two [2022-09-16 11:39:06,968 INFO L138 BoogieDeclarations]: Found implementation of procedure reader_two [2022-09-16 11:39:06,968 INFO L130 BoogieDeclarations]: Found specification of procedure writer_fn [2022-09-16 11:39:06,968 INFO L138 BoogieDeclarations]: Found implementation of procedure writer_fn [2022-09-16 11:39:06,968 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-16 11:39:06,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-16 11:39:06,969 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-16 11:39:06,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-16 11:39:06,969 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-09-16 11:39:06,969 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-16 11:39:06,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-16 11:39:06,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-16 11:39:06,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-16 11:39:06,970 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-09-16 11:39:07,134 INFO L234 CfgBuilder]: Building ICFG [2022-09-16 11:39:07,135 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-16 11:39:07,462 INFO L275 CfgBuilder]: Performing block encoding [2022-09-16 11:39:07,470 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-16 11:39:07,470 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-09-16 11:39:07,472 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:39:07 BoogieIcfgContainer [2022-09-16 11:39:07,472 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-16 11:39:07,474 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-16 11:39:07,474 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-16 11:39:07,477 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-16 11:39:07,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 11:39:06" (1/3) ... [2022-09-16 11:39:07,478 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45365ba1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:39:07, skipping insertion in model container [2022-09-16 11:39:07,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:39:06" (2/3) ... [2022-09-16 11:39:07,478 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45365ba1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:39:07, skipping insertion in model container [2022-09-16 11:39:07,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:39:07" (3/3) ... [2022-09-16 11:39:07,479 INFO L112 eAbstractionObserver]: Analyzing ICFG ring_2w1r-1.i [2022-09-16 11:39:07,493 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-16 11:39:07,493 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2022-09-16 11:39:07,494 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-16 11:39:07,588 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-09-16 11:39:07,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 271 places, 281 transitions, 578 flow [2022-09-16 11:39:07,768 INFO L130 PetriNetUnfolder]: 17/279 cut-off events. [2022-09-16 11:39:07,768 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-09-16 11:39:07,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 288 conditions, 279 events. 17/279 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 623 event pairs, 0 based on Foata normal form. 0/236 useless extension candidates. Maximal degree in co-relation 227. Up to 2 conditions per place. [2022-09-16 11:39:07,778 INFO L82 GeneralOperation]: Start removeDead. Operand has 271 places, 281 transitions, 578 flow [2022-09-16 11:39:07,789 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 258 places, 268 transitions, 545 flow [2022-09-16 11:39:07,800 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 11:39:07,805 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5d817c95, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 11:39:07,805 INFO L358 AbstractCegarLoop]: Starting to check reachability of 46 error locations. [2022-09-16 11:39:07,817 INFO L130 PetriNetUnfolder]: 1/75 cut-off events. [2022-09-16 11:39:07,817 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-16 11:39:07,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:39:07,817 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:39:07,818 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting writer_fnErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [reader_twoErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-09-16 11:39:07,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:39:07,826 INFO L85 PathProgramCache]: Analyzing trace with hash -50364907, now seen corresponding path program 1 times [2022-09-16 11:39:07,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:39:07,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289999833] [2022-09-16 11:39:07,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:39:07,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:39:08,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:39:08,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:39:08,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:39:08,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289999833] [2022-09-16 11:39:08,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289999833] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:39:08,122 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:39:08,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-16 11:39:08,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374724105] [2022-09-16 11:39:08,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:39:08,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 11:39:08,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:39:08,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 11:39:08,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:39:08,159 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 253 out of 281 [2022-09-16 11:39:08,166 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 268 transitions, 545 flow. Second operand has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:39:08,166 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:39:08,167 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 253 of 281 [2022-09-16 11:39:08,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:39:08,329 INFO L130 PetriNetUnfolder]: 32/404 cut-off events. [2022-09-16 11:39:08,329 INFO L131 PetriNetUnfolder]: For 68/68 co-relation queries the response was YES. [2022-09-16 11:39:08,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 502 conditions, 404 events. 32/404 cut-off events. For 68/68 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2045 event pairs, 7 based on Foata normal form. 97/440 useless extension candidates. Maximal degree in co-relation 446. Up to 45 conditions per place. [2022-09-16 11:39:08,339 INFO L137 encePairwiseOnDemand]: 264/281 looper letters, 24 selfloop transitions, 2 changer transitions 0/267 dead transitions. [2022-09-16 11:39:08,339 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 267 transitions, 598 flow [2022-09-16 11:39:08,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 11:39:08,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-16 11:39:08,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 810 transitions. [2022-09-16 11:39:08,358 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9608540925266904 [2022-09-16 11:39:08,358 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 810 transitions. [2022-09-16 11:39:08,359 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 810 transitions. [2022-09-16 11:39:08,362 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:39:08,364 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 810 transitions. [2022-09-16 11:39:08,369 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 270.0) internal successors, (810), 3 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:39:08,377 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 281.0) internal successors, (1124), 4 states have internal predecessors, (1124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:39:08,378 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 281.0) internal successors, (1124), 4 states have internal predecessors, (1124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:39:08,380 INFO L175 Difference]: Start difference. First operand has 258 places, 268 transitions, 545 flow. Second operand 3 states and 810 transitions. [2022-09-16 11:39:08,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 267 transitions, 598 flow [2022-09-16 11:39:08,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 267 transitions, 591 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-16 11:39:08,392 INFO L231 Difference]: Finished difference. Result has 258 places, 259 transitions, 540 flow [2022-09-16 11:39:08,394 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=520, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=540, PETRI_PLACES=258, PETRI_TRANSITIONS=259} [2022-09-16 11:39:08,399 INFO L287 CegarLoopForPetriNet]: 258 programPoint places, 0 predicate places. [2022-09-16 11:39:08,400 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 259 transitions, 540 flow [2022-09-16 11:39:08,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:39:08,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:39:08,401 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:39:08,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-16 11:39:08,401 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [reader_twoErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-09-16 11:39:08,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:39:08,402 INFO L85 PathProgramCache]: Analyzing trace with hash -321590637, now seen corresponding path program 1 times [2022-09-16 11:39:08,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:39:08,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753622476] [2022-09-16 11:39:08,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:39:08,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:39:08,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:39:08,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:39:08,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:39:08,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753622476] [2022-09-16 11:39:08,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753622476] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:39:08,494 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:39:08,494 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-16 11:39:08,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725657816] [2022-09-16 11:39:08,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:39:08,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 11:39:08,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:39:08,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 11:39:08,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:39:08,497 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 281 [2022-09-16 11:39:08,498 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 259 transitions, 540 flow. Second operand has 3 states, 3 states have (on average 254.0) internal successors, (762), 3 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:39:08,498 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:39:08,498 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 281 [2022-09-16 11:39:08,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:39:08,608 INFO L130 PetriNetUnfolder]: 9/334 cut-off events. [2022-09-16 11:39:08,608 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-09-16 11:39:08,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 376 conditions, 334 events. 9/334 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 886 event pairs, 0 based on Foata normal form. 0/292 useless extension candidates. Maximal degree in co-relation 321. Up to 19 conditions per place. [2022-09-16 11:39:08,616 INFO L137 encePairwiseOnDemand]: 274/281 looper letters, 24 selfloop transitions, 2 changer transitions 0/267 dead transitions. [2022-09-16 11:39:08,616 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 267 transitions, 608 flow [2022-09-16 11:39:08,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 11:39:08,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-16 11:39:08,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 787 transitions. [2022-09-16 11:39:08,618 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.933570581257414 [2022-09-16 11:39:08,619 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 787 transitions. [2022-09-16 11:39:08,619 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 787 transitions. [2022-09-16 11:39:08,619 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:39:08,619 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 787 transitions. [2022-09-16 11:39:08,622 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 262.3333333333333) internal successors, (787), 3 states have internal predecessors, (787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:39:08,623 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 281.0) internal successors, (1124), 4 states have internal predecessors, (1124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:39:08,624 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 281.0) internal successors, (1124), 4 states have internal predecessors, (1124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:39:08,624 INFO L175 Difference]: Start difference. First operand has 258 places, 259 transitions, 540 flow. Second operand 3 states and 787 transitions. [2022-09-16 11:39:08,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 267 transitions, 608 flow [2022-09-16 11:39:08,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 267 transitions, 606 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:39:08,632 INFO L231 Difference]: Finished difference. Result has 260 places, 260 transitions, 558 flow [2022-09-16 11:39:08,632 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=538, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=558, PETRI_PLACES=260, PETRI_TRANSITIONS=260} [2022-09-16 11:39:08,633 INFO L287 CegarLoopForPetriNet]: 258 programPoint places, 2 predicate places. [2022-09-16 11:39:08,633 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 260 transitions, 558 flow [2022-09-16 11:39:08,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 254.0) internal successors, (762), 3 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:39:08,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:39:08,635 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:39:08,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-16 11:39:08,635 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting writer_fnErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [reader_twoErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-09-16 11:39:08,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:39:08,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1576764613, now seen corresponding path program 1 times [2022-09-16 11:39:08,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:39:08,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638617351] [2022-09-16 11:39:08,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:39:08,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:39:08,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:39:09,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:39:09,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:39:09,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638617351] [2022-09-16 11:39:09,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638617351] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:39:09,172 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:39:09,172 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-09-16 11:39:09,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245134172] [2022-09-16 11:39:09,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:39:09,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-09-16 11:39:09,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:39:09,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-09-16 11:39:09,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2022-09-16 11:39:09,178 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 281 [2022-09-16 11:39:09,181 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 260 transitions, 558 flow. Second operand has 17 states, 17 states have (on average 186.23529411764707) internal successors, (3166), 17 states have internal predecessors, (3166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:39:09,181 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:39:09,181 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 281 [2022-09-16 11:39:09,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:39:22,744 INFO L130 PetriNetUnfolder]: 28922/111178 cut-off events. [2022-09-16 11:39:22,745 INFO L131 PetriNetUnfolder]: For 43/43 co-relation queries the response was YES. [2022-09-16 11:39:23,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157720 conditions, 111178 events. 28922/111178 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 1661. Compared 1623845 event pairs, 8252 based on Foata normal form. 0/95346 useless extension candidates. Maximal degree in co-relation 59357. Up to 30598 conditions per place. [2022-09-16 11:39:23,647 INFO L137 encePairwiseOnDemand]: 261/281 looper letters, 311 selfloop transitions, 56 changer transitions 0/547 dead transitions. [2022-09-16 11:39:23,647 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 547 transitions, 1873 flow [2022-09-16 11:39:23,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-09-16 11:39:23,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-09-16 11:39:23,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4791 transitions. [2022-09-16 11:39:23,659 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7104092526690391 [2022-09-16 11:39:23,659 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4791 transitions. [2022-09-16 11:39:23,659 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4791 transitions. [2022-09-16 11:39:23,662 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:39:23,662 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4791 transitions. [2022-09-16 11:39:23,673 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 199.625) internal successors, (4791), 24 states have internal predecessors, (4791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:39:23,686 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 281.0) internal successors, (7025), 25 states have internal predecessors, (7025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:39:23,689 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 281.0) internal successors, (7025), 25 states have internal predecessors, (7025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:39:23,689 INFO L175 Difference]: Start difference. First operand has 260 places, 260 transitions, 558 flow. Second operand 24 states and 4791 transitions. [2022-09-16 11:39:23,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 547 transitions, 1873 flow [2022-09-16 11:39:23,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 547 transitions, 1871 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:39:23,708 INFO L231 Difference]: Finished difference. Result has 298 places, 315 transitions, 923 flow [2022-09-16 11:39:23,708 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=556, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=923, PETRI_PLACES=298, PETRI_TRANSITIONS=315} [2022-09-16 11:39:23,710 INFO L287 CegarLoopForPetriNet]: 258 programPoint places, 40 predicate places. [2022-09-16 11:39:23,710 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 315 transitions, 923 flow [2022-09-16 11:39:23,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 186.23529411764707) internal successors, (3166), 17 states have internal predecessors, (3166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:39:23,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:39:23,713 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:39:23,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-09-16 11:39:23,714 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [reader_twoErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-09-16 11:39:23,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:39:23,714 INFO L85 PathProgramCache]: Analyzing trace with hash -2134931161, now seen corresponding path program 1 times [2022-09-16 11:39:23,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:39:23,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710085134] [2022-09-16 11:39:23,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:39:23,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:39:23,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:39:24,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:39:24,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:39:24,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710085134] [2022-09-16 11:39:24,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710085134] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:39:24,089 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:39:24,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-09-16 11:39:24,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883488097] [2022-09-16 11:39:24,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:39:24,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-09-16 11:39:24,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:39:24,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-09-16 11:39:24,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2022-09-16 11:39:24,094 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 281 [2022-09-16 11:39:24,096 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 315 transitions, 923 flow. Second operand has 17 states, 17 states have (on average 185.35294117647058) internal successors, (3151), 17 states have internal predecessors, (3151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:39:24,097 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:39:24,097 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 281 [2022-09-16 11:39:24,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:39:43,282 INFO L130 PetriNetUnfolder]: 36578/149390 cut-off events. [2022-09-16 11:39:43,283 INFO L131 PetriNetUnfolder]: For 25118/25388 co-relation queries the response was YES. [2022-09-16 11:39:44,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 231580 conditions, 149390 events. 36578/149390 cut-off events. For 25118/25388 co-relation queries the response was YES. Maximal size of possible extension queue 2104. Compared 2290730 event pairs, 10677 based on Foata normal form. 217/128117 useless extension candidates. Maximal degree in co-relation 231473. Up to 40378 conditions per place. [2022-09-16 11:39:44,855 INFO L137 encePairwiseOnDemand]: 261/281 looper letters, 309 selfloop transitions, 142 changer transitions 0/648 dead transitions. [2022-09-16 11:39:44,855 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 648 transitions, 2873 flow [2022-09-16 11:39:44,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-09-16 11:39:44,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-09-16 11:39:44,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4763 transitions. [2022-09-16 11:39:44,867 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7062574139976275 [2022-09-16 11:39:44,867 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4763 transitions. [2022-09-16 11:39:44,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4763 transitions. [2022-09-16 11:39:44,870 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:39:44,870 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4763 transitions. [2022-09-16 11:39:44,879 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 198.45833333333334) internal successors, (4763), 24 states have internal predecessors, (4763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:39:44,888 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 281.0) internal successors, (7025), 25 states have internal predecessors, (7025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:39:44,890 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 281.0) internal successors, (7025), 25 states have internal predecessors, (7025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:39:44,890 INFO L175 Difference]: Start difference. First operand has 298 places, 315 transitions, 923 flow. Second operand 24 states and 4763 transitions. [2022-09-16 11:39:44,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 648 transitions, 2873 flow [2022-09-16 11:39:45,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 648 transitions, 2864 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-09-16 11:39:45,624 INFO L231 Difference]: Finished difference. Result has 332 places, 423 transitions, 1966 flow [2022-09-16 11:39:45,625 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=914, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1966, PETRI_PLACES=332, PETRI_TRANSITIONS=423} [2022-09-16 11:39:45,625 INFO L287 CegarLoopForPetriNet]: 258 programPoint places, 74 predicate places. [2022-09-16 11:39:45,625 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 423 transitions, 1966 flow [2022-09-16 11:39:45,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 185.35294117647058) internal successors, (3151), 17 states have internal predecessors, (3151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:39:45,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:39:45,628 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:39:45,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-09-16 11:39:45,628 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting writer_fnErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [reader_twoErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-09-16 11:39:45,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:39:45,629 INFO L85 PathProgramCache]: Analyzing trace with hash -145831177, now seen corresponding path program 1 times [2022-09-16 11:39:45,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:39:45,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351862977] [2022-09-16 11:39:45,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:39:45,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:39:45,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:39:45,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:39:45,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:39:45,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351862977] [2022-09-16 11:39:45,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351862977] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:39:45,786 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:39:45,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-16 11:39:45,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368555785] [2022-09-16 11:39:45,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:39:45,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-09-16 11:39:45,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:39:45,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-09-16 11:39:45,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-09-16 11:39:45,789 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 281 [2022-09-16 11:39:45,791 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 423 transitions, 1966 flow. Second operand has 11 states, 11 states have (on average 189.54545454545453) internal successors, (2085), 11 states have internal predecessors, (2085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:39:45,791 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:39:45,791 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 281 [2022-09-16 11:39:45,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand