/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/weaver/popl20-bad-commit-2.wvr-bad.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-53ca081-m [2022-09-16 11:52:30,194 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-16 11:52:30,196 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-16 11:52:30,241 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-16 11:52:30,241 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-16 11:52:30,245 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-16 11:52:30,248 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-16 11:52:30,250 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-16 11:52:30,252 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-16 11:52:30,255 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-16 11:52:30,256 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-16 11:52:30,257 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-16 11:52:30,257 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-16 11:52:30,259 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-16 11:52:30,260 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-16 11:52:30,263 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-16 11:52:30,263 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-16 11:52:30,264 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-16 11:52:30,266 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-16 11:52:30,271 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-16 11:52:30,272 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-16 11:52:30,273 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-16 11:52:30,275 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-16 11:52:30,276 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-16 11:52:30,282 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-16 11:52:30,282 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-16 11:52:30,282 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-16 11:52:30,284 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-16 11:52:30,284 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-16 11:52:30,285 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-16 11:52:30,285 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-16 11:52:30,285 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-16 11:52:30,287 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-16 11:52:30,287 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-16 11:52:30,288 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-16 11:52:30,288 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-16 11:52:30,289 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-16 11:52:30,289 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-16 11:52:30,289 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-16 11:52:30,290 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-16 11:52:30,290 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-16 11:52:30,291 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 11:52:30,321 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-16 11:52:30,321 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-16 11:52:30,322 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-16 11:52:30,322 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-16 11:52:30,322 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-16 11:52:30,323 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-16 11:52:30,323 INFO L138 SettingsManager]: * Use SBE=true [2022-09-16 11:52:30,323 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-16 11:52:30,323 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-16 11:52:30,323 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-16 11:52:30,324 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-16 11:52:30,324 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-16 11:52:30,324 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-16 11:52:30,324 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-16 11:52:30,324 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-16 11:52:30,325 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-16 11:52:30,325 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-16 11:52:30,325 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-16 11:52:30,325 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-16 11:52:30,325 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-16 11:52:30,325 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-16 11:52:30,325 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-16 11:52:30,326 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-16 11:52:30,326 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:52:30,326 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-16 11:52:30,326 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-16 11:52:30,326 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-16 11:52:30,326 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-16 11:52:30,326 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-16 11:52:30,326 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-16 11:52:30,327 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-16 11:52:30,327 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of error function in SV-COMP mode -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2022-09-16 11:52:30,553 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-16 11:52:30,573 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-16 11:52:30,575 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-16 11:52:30,576 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-16 11:52:30,577 INFO L275 PluginConnector]: CDTParser initialized [2022-09-16 11:52:30,578 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-bad-commit-2.wvr-bad.c [2022-09-16 11:52:30,636 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52bf3f774/0f426dc5d6b141f5ab81458e801e811d/FLAG87f5185d0 [2022-09-16 11:52:31,044 INFO L306 CDTParser]: Found 1 translation units. [2022-09-16 11:52:31,045 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-commit-2.wvr-bad.c [2022-09-16 11:52:31,054 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52bf3f774/0f426dc5d6b141f5ab81458e801e811d/FLAG87f5185d0 [2022-09-16 11:52:31,063 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52bf3f774/0f426dc5d6b141f5ab81458e801e811d [2022-09-16 11:52:31,065 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-16 11:52:31,066 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-16 11:52:31,067 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-16 11:52:31,067 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-16 11:52:31,070 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-16 11:52:31,070 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:52:31" (1/1) ... [2022-09-16 11:52:31,071 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56ac781e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:52:31, skipping insertion in model container [2022-09-16 11:52:31,071 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:52:31" (1/1) ... [2022-09-16 11:52:31,076 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-16 11:52:31,117 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-16 11:52:31,275 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-commit-2.wvr-bad.c[6687,6700] [2022-09-16 11:52:31,279 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:52:31,285 INFO L203 MainTranslator]: Completed pre-run [2022-09-16 11:52:31,315 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-commit-2.wvr-bad.c[6687,6700] [2022-09-16 11:52:31,318 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:52:31,329 INFO L208 MainTranslator]: Completed translation [2022-09-16 11:52:31,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:52:31 WrapperNode [2022-09-16 11:52:31,330 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-16 11:52:31,331 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-16 11:52:31,331 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-16 11:52:31,331 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-16 11:52:31,337 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:52:31" (1/1) ... [2022-09-16 11:52:31,351 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:52:31" (1/1) ... [2022-09-16 11:52:31,389 INFO L138 Inliner]: procedures = 26, calls = 93, calls flagged for inlining = 27, calls inlined = 33, statements flattened = 492 [2022-09-16 11:52:31,390 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-16 11:52:31,390 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-16 11:52:31,390 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-16 11:52:31,390 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-16 11:52:31,397 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:52:31" (1/1) ... [2022-09-16 11:52:31,397 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:52:31" (1/1) ... [2022-09-16 11:52:31,402 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:52:31" (1/1) ... [2022-09-16 11:52:31,403 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:52:31" (1/1) ... [2022-09-16 11:52:31,413 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:52:31" (1/1) ... [2022-09-16 11:52:31,418 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:52:31" (1/1) ... [2022-09-16 11:52:31,420 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:52:31" (1/1) ... [2022-09-16 11:52:31,425 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-16 11:52:31,426 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-16 11:52:31,426 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-16 11:52:31,426 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-16 11:52:31,427 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:52:31" (1/1) ... [2022-09-16 11:52:31,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:52:31,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:52:31,463 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 11:52:31,483 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 11:52:31,498 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-16 11:52:31,498 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-16 11:52:31,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-16 11:52:31,498 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-16 11:52:31,498 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-16 11:52:31,498 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-16 11:52:31,498 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-16 11:52:31,499 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-16 11:52:31,499 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-09-16 11:52:31,499 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-09-16 11:52:31,502 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-09-16 11:52:31,502 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-09-16 11:52:31,502 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-16 11:52:31,502 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-09-16 11:52:31,502 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-09-16 11:52:31,502 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-09-16 11:52:31,502 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-16 11:52:31,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-16 11:52:31,503 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-16 11:52:31,504 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 11:52:31,631 INFO L234 CfgBuilder]: Building ICFG [2022-09-16 11:52:31,632 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-16 11:52:32,191 INFO L275 CfgBuilder]: Performing block encoding [2022-09-16 11:52:32,434 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-16 11:52:32,434 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2022-09-16 11:52:32,437 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:52:32 BoogieIcfgContainer [2022-09-16 11:52:32,437 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-16 11:52:32,439 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-16 11:52:32,439 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-16 11:52:32,442 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-16 11:52:32,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 11:52:31" (1/3) ... [2022-09-16 11:52:32,443 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78bbeaa5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:52:32, skipping insertion in model container [2022-09-16 11:52:32,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:52:31" (2/3) ... [2022-09-16 11:52:32,443 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78bbeaa5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:52:32, skipping insertion in model container [2022-09-16 11:52:32,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:52:32" (3/3) ... [2022-09-16 11:52:32,447 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-commit-2.wvr-bad.c [2022-09-16 11:52:32,462 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-16 11:52:32,462 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2022-09-16 11:52:32,463 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-16 11:52:32,572 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-09-16 11:52:32,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 371 places, 395 transitions, 822 flow [2022-09-16 11:52:32,770 INFO L130 PetriNetUnfolder]: 37/391 cut-off events. [2022-09-16 11:52:32,771 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-09-16 11:52:32,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 408 conditions, 391 events. 37/391 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 407 event pairs, 0 based on Foata normal form. 0/322 useless extension candidates. Maximal degree in co-relation 344. Up to 8 conditions per place. [2022-09-16 11:52:32,778 INFO L82 GeneralOperation]: Start removeDead. Operand has 371 places, 395 transitions, 822 flow [2022-09-16 11:52:32,787 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 345 places, 368 transitions, 757 flow [2022-09-16 11:52:32,800 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 11:52:32,807 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;@636d6896, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 11:52:32,808 INFO L358 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2022-09-16 11:52:32,820 INFO L130 PetriNetUnfolder]: 3/84 cut-off events. [2022-09-16 11:52:32,821 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-16 11:52:32,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:52:32,822 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, 1, 1, 1] [2022-09-16 11:52:32,822 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-09-16 11:52:32,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:52:32,827 INFO L85 PathProgramCache]: Analyzing trace with hash -206792586, now seen corresponding path program 1 times [2022-09-16 11:52:32,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:52:32,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605859888] [2022-09-16 11:52:32,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:52:32,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:52:32,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:52:33,086 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 11:52:33,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:52:33,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605859888] [2022-09-16 11:52:33,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605859888] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:52:33,088 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:52:33,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:52:33,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953406258] [2022-09-16 11:52:33,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:52:33,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:52:33,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:52:33,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:52:33,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:52:33,138 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 285 out of 395 [2022-09-16 11:52:33,143 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 368 transitions, 757 flow. Second operand has 4 states, 4 states have (on average 286.5) internal successors, (1146), 4 states have internal predecessors, (1146), 0 states have call successors, (0), 0 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 11:52:33,144 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:52:33,144 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 285 of 395 [2022-09-16 11:52:33,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:52:34,310 INFO L130 PetriNetUnfolder]: 2793/4191 cut-off events. [2022-09-16 11:52:34,310 INFO L131 PetriNetUnfolder]: For 418/418 co-relation queries the response was YES. [2022-09-16 11:52:34,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8124 conditions, 4191 events. 2793/4191 cut-off events. For 418/418 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 18253 event pairs, 1192 based on Foata normal form. 632/3059 useless extension candidates. Maximal degree in co-relation 3423. Up to 1751 conditions per place. [2022-09-16 11:52:34,371 INFO L137 encePairwiseOnDemand]: 340/395 looper letters, 126 selfloop transitions, 19 changer transitions 8/406 dead transitions. [2022-09-16 11:52:34,371 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 406 transitions, 1144 flow [2022-09-16 11:52:34,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:52:34,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:52:34,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1626 transitions. [2022-09-16 11:52:34,387 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8232911392405063 [2022-09-16 11:52:34,388 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1626 transitions. [2022-09-16 11:52:34,388 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1626 transitions. [2022-09-16 11:52:34,391 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:52:34,393 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1626 transitions. [2022-09-16 11:52:34,398 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 325.2) internal successors, (1626), 5 states have internal predecessors, (1626), 0 states have call successors, (0), 0 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 11:52:34,406 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 395.0) internal successors, (2370), 6 states have internal predecessors, (2370), 0 states have call successors, (0), 0 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 11:52:34,407 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 395.0) internal successors, (2370), 6 states have internal predecessors, (2370), 0 states have call successors, (0), 0 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 11:52:34,408 INFO L175 Difference]: Start difference. First operand has 345 places, 368 transitions, 757 flow. Second operand 5 states and 1626 transitions. [2022-09-16 11:52:34,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 406 transitions, 1144 flow [2022-09-16 11:52:34,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 406 transitions, 1118 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-09-16 11:52:34,422 INFO L231 Difference]: Finished difference. Result has 333 places, 347 transitions, 813 flow [2022-09-16 11:52:34,424 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=395, PETRI_DIFFERENCE_MINUEND_FLOW=688, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=813, PETRI_PLACES=333, PETRI_TRANSITIONS=347} [2022-09-16 11:52:34,426 INFO L287 CegarLoopForPetriNet]: 345 programPoint places, -12 predicate places. [2022-09-16 11:52:34,427 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 347 transitions, 813 flow [2022-09-16 11:52:34,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 286.5) internal successors, (1146), 4 states have internal predecessors, (1146), 0 states have call successors, (0), 0 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 11:52:34,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:52:34,428 INFO L208 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:52:34,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-16 11:52:34,428 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-09-16 11:52:34,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:52:34,429 INFO L85 PathProgramCache]: Analyzing trace with hash -2017743730, now seen corresponding path program 1 times [2022-09-16 11:52:34,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:52:34,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373723862] [2022-09-16 11:52:34,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:52:34,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:52:34,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:52:34,514 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:52:34,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:52:34,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373723862] [2022-09-16 11:52:34,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373723862] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:52:34,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1167818678] [2022-09-16 11:52:34,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:52:34,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:52:34,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:52:34,517 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) [2022-09-16 11:52:34,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-09-16 11:52:34,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:52:34,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:52:34,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:52:34,740 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:52:34,741 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:52:34,800 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:52:34,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1167818678] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:52:34,801 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:52:34,801 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-09-16 11:52:34,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134316791] [2022-09-16 11:52:34,802 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:52:34,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-16 11:52:34,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:52:34,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-16 11:52:34,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-09-16 11:52:34,808 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 285 out of 395 [2022-09-16 11:52:34,812 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 347 transitions, 813 flow. Second operand has 12 states, 12 states have (on average 287.6666666666667) internal successors, (3452), 12 states have internal predecessors, (3452), 0 states have call successors, (0), 0 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 11:52:34,812 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:52:34,812 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 285 of 395 [2022-09-16 11:52:34,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:52:37,244 INFO L130 PetriNetUnfolder]: 6981/10275 cut-off events. [2022-09-16 11:52:37,245 INFO L131 PetriNetUnfolder]: For 254/254 co-relation queries the response was YES. [2022-09-16 11:52:37,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19857 conditions, 10275 events. 6981/10275 cut-off events. For 254/254 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 50985 event pairs, 2980 based on Foata normal form. 12/5917 useless extension candidates. Maximal degree in co-relation 15272. Up to 1740 conditions per place. [2022-09-16 11:52:37,361 INFO L137 encePairwiseOnDemand]: 364/395 looper letters, 267 selfloop transitions, 84 changer transitions 0/604 dead transitions. [2022-09-16 11:52:37,361 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 604 transitions, 2167 flow [2022-09-16 11:52:37,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-16 11:52:37,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-16 11:52:37,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 5493 transitions. [2022-09-16 11:52:37,372 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7725738396624473 [2022-09-16 11:52:37,372 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 5493 transitions. [2022-09-16 11:52:37,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 5493 transitions. [2022-09-16 11:52:37,374 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:52:37,374 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 5493 transitions. [2022-09-16 11:52:37,385 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 305.1666666666667) internal successors, (5493), 18 states have internal predecessors, (5493), 0 states have call successors, (0), 0 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 11:52:37,396 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 395.0) internal successors, (7505), 19 states have internal predecessors, (7505), 0 states have call successors, (0), 0 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 11:52:37,399 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 395.0) internal successors, (7505), 19 states have internal predecessors, (7505), 0 states have call successors, (0), 0 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 11:52:37,400 INFO L175 Difference]: Start difference. First operand has 333 places, 347 transitions, 813 flow. Second operand 18 states and 5493 transitions. [2022-09-16 11:52:37,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 604 transitions, 2167 flow [2022-09-16 11:52:37,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 604 transitions, 2156 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:52:37,410 INFO L231 Difference]: Finished difference. Result has 345 places, 404 transitions, 1304 flow [2022-09-16 11:52:37,411 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=395, PETRI_DIFFERENCE_MINUEND_FLOW=802, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1304, PETRI_PLACES=345, PETRI_TRANSITIONS=404} [2022-09-16 11:52:37,412 INFO L287 CegarLoopForPetriNet]: 345 programPoint places, 0 predicate places. [2022-09-16 11:52:37,412 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 404 transitions, 1304 flow [2022-09-16 11:52:37,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 287.6666666666667) internal successors, (3452), 12 states have internal predecessors, (3452), 0 states have call successors, (0), 0 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 11:52:37,414 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:52:37,415 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:52:37,441 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-09-16 11:52:37,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:52:37,639 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-09-16 11:52:37,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:52:37,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1874455016, now seen corresponding path program 1 times [2022-09-16 11:52:37,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:52:37,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039702114] [2022-09-16 11:52:37,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:52:37,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:52:37,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:52:37,736 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:52:37,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:52:37,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039702114] [2022-09-16 11:52:37,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039702114] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:52:37,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008847839] [2022-09-16 11:52:37,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:52:37,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:52:37,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:52:37,738 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) [2022-09-16 11:52:37,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-09-16 11:52:37,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:52:37,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:52:37,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:52:37,889 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:52:37,889 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:52:37,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1008847839] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:52:37,890 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:52:37,890 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 11:52:37,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814907396] [2022-09-16 11:52:37,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:52:37,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:52:37,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:52:37,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:52:37,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:52:37,897 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 285 out of 395 [2022-09-16 11:52:37,898 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 404 transitions, 1304 flow. Second operand has 6 states, 6 states have (on average 287.3333333333333) internal successors, (1724), 6 states have internal predecessors, (1724), 0 states have call successors, (0), 0 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 11:52:37,898 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:52:37,899 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 285 of 395 [2022-09-16 11:52:37,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:52:39,842 INFO L130 PetriNetUnfolder]: 6981/10259 cut-off events. [2022-09-16 11:52:39,842 INFO L131 PetriNetUnfolder]: For 464/464 co-relation queries the response was YES. [2022-09-16 11:52:39,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19932 conditions, 10259 events. 6981/10259 cut-off events. For 464/464 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 50922 event pairs, 2980 based on Foata normal form. 16/5905 useless extension candidates. Maximal degree in co-relation 15888. Up to 6860 conditions per place. [2022-09-16 11:52:39,958 INFO L137 encePairwiseOnDemand]: 372/395 looper letters, 127 selfloop transitions, 59 changer transitions 0/439 dead transitions. [2022-09-16 11:52:39,958 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 439 transitions, 1686 flow [2022-09-16 11:52:39,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:52:39,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:52:39,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2140 transitions. [2022-09-16 11:52:39,963 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7739602169981917 [2022-09-16 11:52:39,963 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2140 transitions. [2022-09-16 11:52:39,963 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2140 transitions. [2022-09-16 11:52:39,964 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:52:39,965 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2140 transitions. [2022-09-16 11:52:39,968 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 305.7142857142857) internal successors, (2140), 7 states have internal predecessors, (2140), 0 states have call successors, (0), 0 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 11:52:39,972 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 395.0) internal successors, (3160), 8 states have internal predecessors, (3160), 0 states have call successors, (0), 0 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 11:52:39,973 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 395.0) internal successors, (3160), 8 states have internal predecessors, (3160), 0 states have call successors, (0), 0 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 11:52:39,973 INFO L175 Difference]: Start difference. First operand has 345 places, 404 transitions, 1304 flow. Second operand 7 states and 2140 transitions. [2022-09-16 11:52:39,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 439 transitions, 1686 flow [2022-09-16 11:52:39,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 439 transitions, 1528 flow, removed 56 selfloop flow, removed 5 redundant places. [2022-09-16 11:52:39,989 INFO L231 Difference]: Finished difference. Result has 338 places, 388 transitions, 1156 flow [2022-09-16 11:52:39,990 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=395, PETRI_DIFFERENCE_MINUEND_FLOW=1038, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1156, PETRI_PLACES=338, PETRI_TRANSITIONS=388} [2022-09-16 11:52:39,992 INFO L287 CegarLoopForPetriNet]: 345 programPoint places, -7 predicate places. [2022-09-16 11:52:39,992 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 388 transitions, 1156 flow [2022-09-16 11:52:39,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 287.3333333333333) internal successors, (1724), 6 states have internal predecessors, (1724), 0 states have call successors, (0), 0 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 11:52:39,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:52:39,993 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:52:40,020 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-09-16 11:52:40,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-09-16 11:52:40,216 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-09-16 11:52:40,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:52:40,216 INFO L85 PathProgramCache]: Analyzing trace with hash -521269642, now seen corresponding path program 2 times [2022-09-16 11:52:40,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:52:40,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607712877] [2022-09-16 11:52:40,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:52:40,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:52:40,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:52:40,353 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:52:40,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:52:40,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607712877] [2022-09-16 11:52:40,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607712877] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:52:40,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [285742629] [2022-09-16 11:52:40,354 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:52:40,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:52:40,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:52:40,356 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) [2022-09-16 11:52:40,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-09-16 11:52:40,446 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-16 11:52:40,447 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:52:40,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 7 conjunts are in the unsatisfiable core [2022-09-16 11:52:40,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:52:40,580 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-09-16 11:52:40,580 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:52:40,722 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-09-16 11:52:40,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [285742629] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:52:40,722 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:52:40,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-09-16 11:52:40,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604914648] [2022-09-16 11:52:40,723 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:52:40,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-09-16 11:52:40,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:52:40,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-09-16 11:52:40,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-09-16 11:52:40,728 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 260 out of 395 [2022-09-16 11:52:40,733 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 388 transitions, 1156 flow. Second operand has 18 states, 18 states have (on average 263.6111111111111) internal successors, (4745), 18 states have internal predecessors, (4745), 0 states have call successors, (0), 0 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 11:52:40,733 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:52:40,733 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 260 of 395 [2022-09-16 11:52:40,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:52:42,648 INFO L130 PetriNetUnfolder]: 2584/4759 cut-off events. [2022-09-16 11:52:42,648 INFO L131 PetriNetUnfolder]: For 420/420 co-relation queries the response was YES. [2022-09-16 11:52:42,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8653 conditions, 4759 events. 2584/4759 cut-off events. For 420/420 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 21463 event pairs, 693 based on Foata normal form. 8/3535 useless extension candidates. Maximal degree in co-relation 6474. Up to 644 conditions per place. [2022-09-16 11:52:42,703 INFO L137 encePairwiseOnDemand]: 353/395 looper letters, 333 selfloop transitions, 129 changer transitions 0/690 dead transitions. [2022-09-16 11:52:42,704 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 690 transitions, 2875 flow [2022-09-16 11:52:42,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-09-16 11:52:42,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2022-09-16 11:52:42,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 13252 transitions. [2022-09-16 11:52:42,733 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6846809609919917 [2022-09-16 11:52:42,733 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 13252 transitions. [2022-09-16 11:52:42,733 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 13252 transitions. [2022-09-16 11:52:42,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:52:42,740 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 13252 transitions. [2022-09-16 11:52:42,777 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 50 states, 49 states have (on average 270.44897959183675) internal successors, (13252), 49 states have internal predecessors, (13252), 0 states have call successors, (0), 0 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 11:52:42,810 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 50 states, 50 states have (on average 395.0) internal successors, (19750), 50 states have internal predecessors, (19750), 0 states have call successors, (0), 0 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 11:52:42,815 INFO L81 ComplementDD]: Finished complementDD. Result has 50 states, 50 states have (on average 395.0) internal successors, (19750), 50 states have internal predecessors, (19750), 0 states have call successors, (0), 0 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 11:52:42,815 INFO L175 Difference]: Start difference. First operand has 338 places, 388 transitions, 1156 flow. Second operand 49 states and 13252 transitions. [2022-09-16 11:52:42,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 690 transitions, 2875 flow [2022-09-16 11:52:42,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 690 transitions, 2780 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-09-16 11:52:42,828 INFO L231 Difference]: Finished difference. Result has 378 places, 437 transitions, 1615 flow [2022-09-16 11:52:42,829 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=395, PETRI_DIFFERENCE_MINUEND_FLOW=1060, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=1615, PETRI_PLACES=378, PETRI_TRANSITIONS=437} [2022-09-16 11:52:42,830 INFO L287 CegarLoopForPetriNet]: 345 programPoint places, 33 predicate places. [2022-09-16 11:52:42,830 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 437 transitions, 1615 flow [2022-09-16 11:52:42,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 263.6111111111111) internal successors, (4745), 18 states have internal predecessors, (4745), 0 states have call successors, (0), 0 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 11:52:42,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:52:42,832 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:52:42,855 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-09-16 11:52:43,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:52:43,055 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-09-16 11:52:43,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:52:43,056 INFO L85 PathProgramCache]: Analyzing trace with hash -2060825617, now seen corresponding path program 1 times [2022-09-16 11:52:43,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:52:43,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130369033] [2022-09-16 11:52:43,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:52:43,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:52:43,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:52:43,236 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:52:43,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:52:43,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130369033] [2022-09-16 11:52:43,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130369033] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:52:43,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1275173365] [2022-09-16 11:52:43,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:52:43,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:52:43,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:52:43,240 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) [2022-09-16 11:52:43,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-09-16 11:52:43,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:52:43,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 15 conjunts are in the unsatisfiable core [2022-09-16 11:52:43,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:52:43,472 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:52:43,472 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:52:43,732 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:52:43,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1275173365] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:52:43,733 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:52:43,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2022-09-16 11:52:43,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145529093] [2022-09-16 11:52:43,733 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:52:43,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-09-16 11:52:43,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:52:43,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-09-16 11:52:43,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2022-09-16 11:52:43,741 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 285 out of 395 [2022-09-16 11:52:43,748 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 437 transitions, 1615 flow. Second operand has 32 states, 32 states have (on average 288.28125) internal successors, (9225), 32 states have internal predecessors, (9225), 0 states have call successors, (0), 0 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 11:52:43,749 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:52:43,749 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 285 of 395 [2022-09-16 11:52:43,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:52:46,767 INFO L130 PetriNetUnfolder]: 5536/10078 cut-off events. [2022-09-16 11:52:46,767 INFO L131 PetriNetUnfolder]: For 1581/1581 co-relation queries the response was YES. [2022-09-16 11:52:46,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18607 conditions, 10078 events. 5536/10078 cut-off events. For 1581/1581 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 51432 event pairs, 1485 based on Foata normal form. 24/7522 useless extension candidates. Maximal degree in co-relation 17803. Up to 1380 conditions per place. [2022-09-16 11:52:46,904 INFO L137 encePairwiseOnDemand]: 369/395 looper letters, 686 selfloop transitions, 218 changer transitions 0/1163 dead transitions. [2022-09-16 11:52:46,905 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 1163 transitions, 5931 flow [2022-09-16 11:52:46,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-09-16 11:52:46,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-09-16 11:52:46,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 13468 transitions. [2022-09-16 11:52:46,929 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7749136939010357 [2022-09-16 11:52:46,929 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 13468 transitions. [2022-09-16 11:52:46,929 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 13468 transitions. [2022-09-16 11:52:46,935 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:52:46,935 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 13468 transitions. [2022-09-16 11:52:46,959 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 306.09090909090907) internal successors, (13468), 44 states have internal predecessors, (13468), 0 states have call successors, (0), 0 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 11:52:46,987 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 395.0) internal successors, (17775), 45 states have internal predecessors, (17775), 0 states have call successors, (0), 0 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 11:52:46,990 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 395.0) internal successors, (17775), 45 states have internal predecessors, (17775), 0 states have call successors, (0), 0 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 11:52:46,990 INFO L175 Difference]: Start difference. First operand has 378 places, 437 transitions, 1615 flow. Second operand 44 states and 13468 transitions. [2022-09-16 11:52:46,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 1163 transitions, 5931 flow [2022-09-16 11:52:47,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 1163 transitions, 5589 flow, removed 104 selfloop flow, removed 15 redundant places. [2022-09-16 11:52:47,016 INFO L231 Difference]: Finished difference. Result has 415 places, 563 transitions, 2827 flow [2022-09-16 11:52:47,017 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=395, PETRI_DIFFERENCE_MINUEND_FLOW=1452, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=2827, PETRI_PLACES=415, PETRI_TRANSITIONS=563} [2022-09-16 11:52:47,019 INFO L287 CegarLoopForPetriNet]: 345 programPoint places, 70 predicate places. [2022-09-16 11:52:47,019 INFO L495 AbstractCegarLoop]: Abstraction has has 415 places, 563 transitions, 2827 flow [2022-09-16 11:52:47,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 288.28125) internal successors, (9225), 32 states have internal predecessors, (9225), 0 states have call successors, (0), 0 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 11:52:47,022 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:52:47,022 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:52:47,045 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-09-16 11:52:47,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:52:47,236 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-09-16 11:52:47,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:52:47,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1095415206, now seen corresponding path program 1 times [2022-09-16 11:52:47,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:52:47,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028781614] [2022-09-16 11:52:47,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:52:47,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:52:47,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:52:47,342 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 11:52:47,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:52:47,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028781614] [2022-09-16 11:52:47,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028781614] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:52:47,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:52:47,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:52:47,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756136636] [2022-09-16 11:52:47,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:52:47,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 11:52:47,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:52:47,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 11:52:47,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:52:47,345 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 320 out of 395 [2022-09-16 11:52:47,346 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 563 transitions, 2827 flow. Second operand has 3 states, 3 states have (on average 321.6666666666667) internal successors, (965), 3 states have internal predecessors, (965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:52:47,346 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:52:47,346 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 320 of 395 [2022-09-16 11:52:47,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:52:51,615 INFO L130 PetriNetUnfolder]: 16996/25273 cut-off events. [2022-09-16 11:52:51,615 INFO L131 PetriNetUnfolder]: For 1677/1692 co-relation queries the response was YES. [2022-09-16 11:52:51,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49764 conditions, 25273 events. 16996/25273 cut-off events. For 1677/1692 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 128806 event pairs, 5850 based on Foata normal form. 0/16708 useless extension candidates. Maximal degree in co-relation 49055. Up to 17431 conditions per place. [2022-09-16 11:52:51,889 INFO L137 encePairwiseOnDemand]: 390/395 looper letters, 50 selfloop transitions, 4 changer transitions 0/579 dead transitions. [2022-09-16 11:52:51,889 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 579 transitions, 2974 flow [2022-09-16 11:52:51,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 11:52:51,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-16 11:52:51,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1015 transitions. [2022-09-16 11:52:51,891 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8565400843881856 [2022-09-16 11:52:51,891 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1015 transitions. [2022-09-16 11:52:51,891 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1015 transitions. [2022-09-16 11:52:51,891 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:52:51,891 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1015 transitions. [2022-09-16 11:52:51,893 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 338.3333333333333) internal successors, (1015), 3 states have internal predecessors, (1015), 0 states have call successors, (0), 0 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 11:52:51,894 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 395.0) internal successors, (1580), 4 states have internal predecessors, (1580), 0 states have call successors, (0), 0 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 11:52:51,895 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 395.0) internal successors, (1580), 4 states have internal predecessors, (1580), 0 states have call successors, (0), 0 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 11:52:51,895 INFO L175 Difference]: Start difference. First operand has 415 places, 563 transitions, 2827 flow. Second operand 3 states and 1015 transitions. [2022-09-16 11:52:51,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 579 transitions, 2974 flow [2022-09-16 11:52:51,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 579 transitions, 2837 flow, removed 1 selfloop flow, removed 15 redundant places. [2022-09-16 11:52:51,916 INFO L231 Difference]: Finished difference. Result has 404 places, 564 transitions, 2712 flow [2022-09-16 11:52:51,916 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=395, PETRI_DIFFERENCE_MINUEND_FLOW=2690, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=563, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=559, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2712, PETRI_PLACES=404, PETRI_TRANSITIONS=564} [2022-09-16 11:52:51,919 INFO L287 CegarLoopForPetriNet]: 345 programPoint places, 59 predicate places. [2022-09-16 11:52:51,919 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 564 transitions, 2712 flow [2022-09-16 11:52:51,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 321.6666666666667) internal successors, (965), 3 states have internal predecessors, (965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:52:51,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:52:51,920 INFO L208 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:52:51,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-09-16 11:52:51,920 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-09-16 11:52:51,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:52:51,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1468739999, now seen corresponding path program 1 times [2022-09-16 11:52:51,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:52:51,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539194432] [2022-09-16 11:52:51,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:52:51,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:52:51,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:52:52,012 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-09-16 11:52:52,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:52:52,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539194432] [2022-09-16 11:52:52,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539194432] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:52:52,013 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:52:52,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:52:52,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943185115] [2022-09-16 11:52:52,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:52:52,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:52:52,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:52:52,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:52:52,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:52:52,015 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 283 out of 395 [2022-09-16 11:52:52,016 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 564 transitions, 2712 flow. Second operand has 6 states, 6 states have (on average 289.1666666666667) internal successors, (1735), 6 states have internal predecessors, (1735), 0 states have call successors, (0), 0 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 11:52:52,017 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:52:52,017 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 283 of 395 [2022-09-16 11:52:52,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:52:55,509 INFO L130 PetriNetUnfolder]: 10336/20385 cut-off events. [2022-09-16 11:52:55,509 INFO L131 PetriNetUnfolder]: For 5653/5998 co-relation queries the response was YES. [2022-09-16 11:52:55,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38181 conditions, 20385 events. 10336/20385 cut-off events. For 5653/5998 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 135897 event pairs, 2805 based on Foata normal form. 660/15750 useless extension candidates. Maximal degree in co-relation 37375. Up to 8660 conditions per place. [2022-09-16 11:52:55,666 INFO L137 encePairwiseOnDemand]: 382/395 looper letters, 298 selfloop transitions, 24 changer transitions 0/632 dead transitions. [2022-09-16 11:52:55,666 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 632 transitions, 3676 flow [2022-09-16 11:52:55,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-16 11:52:55,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-09-16 11:52:55,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2664 transitions. [2022-09-16 11:52:55,671 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7493670886075949 [2022-09-16 11:52:55,671 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2664 transitions. [2022-09-16 11:52:55,671 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2664 transitions. [2022-09-16 11:52:55,674 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:52:55,674 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2664 transitions. [2022-09-16 11:52:55,678 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 296.0) internal successors, (2664), 9 states have internal predecessors, (2664), 0 states have call successors, (0), 0 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 11:52:55,684 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 395.0) internal successors, (3950), 10 states have internal predecessors, (3950), 0 states have call successors, (0), 0 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 11:52:55,685 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 395.0) internal successors, (3950), 10 states have internal predecessors, (3950), 0 states have call successors, (0), 0 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 11:52:55,685 INFO L175 Difference]: Start difference. First operand has 404 places, 564 transitions, 2712 flow. Second operand 9 states and 2664 transitions. [2022-09-16 11:52:55,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 632 transitions, 3676 flow [2022-09-16 11:52:55,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 632 transitions, 3664 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-16 11:52:55,712 INFO L231 Difference]: Finished difference. Result has 411 places, 565 transitions, 2765 flow [2022-09-16 11:52:55,713 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=395, PETRI_DIFFERENCE_MINUEND_FLOW=2704, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=564, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=541, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2765, PETRI_PLACES=411, PETRI_TRANSITIONS=565} [2022-09-16 11:52:55,713 INFO L287 CegarLoopForPetriNet]: 345 programPoint places, 66 predicate places. [2022-09-16 11:52:55,713 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 565 transitions, 2765 flow [2022-09-16 11:52:55,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 289.1666666666667) internal successors, (1735), 6 states have internal predecessors, (1735), 0 states have call successors, (0), 0 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 11:52:55,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:52:55,714 INFO L208 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:52:55,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-09-16 11:52:55,714 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-09-16 11:52:55,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:52:55,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1713697712, now seen corresponding path program 1 times [2022-09-16 11:52:55,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:52:55,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828889745] [2022-09-16 11:52:55,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:52:55,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:52:55,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:52:55,755 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:52:55,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:52:55,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828889745] [2022-09-16 11:52:55,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828889745] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:52:55,756 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:52:55,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:52:55,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316345784] [2022-09-16 11:52:55,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:52:55,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 11:52:55,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:52:55,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 11:52:55,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:52:55,758 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 320 out of 395 [2022-09-16 11:52:55,759 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 565 transitions, 2765 flow. Second operand has 3 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 0 states have call successors, (0), 0 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 11:52:55,759 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:52:55,759 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 320 of 395 [2022-09-16 11:52:55,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:53:01,687 INFO L130 PetriNetUnfolder]: 22231/35460 cut-off events. [2022-09-16 11:53:01,687 INFO L131 PetriNetUnfolder]: For 5281/5311 co-relation queries the response was YES. [2022-09-16 11:53:01,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74114 conditions, 35460 events. 22231/35460 cut-off events. For 5281/5311 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 222539 event pairs, 5640 based on Foata normal form. 0/26535 useless extension candidates. Maximal degree in co-relation 73416. Up to 19952 conditions per place. [2022-09-16 11:53:02,047 INFO L137 encePairwiseOnDemand]: 390/395 looper letters, 53 selfloop transitions, 3 changer transitions 0/582 dead transitions. [2022-09-16 11:53:02,047 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 582 transitions, 2924 flow [2022-09-16 11:53:02,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 11:53:02,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-16 11:53:02,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1017 transitions. [2022-09-16 11:53:02,049 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8582278481012658 [2022-09-16 11:53:02,049 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1017 transitions. [2022-09-16 11:53:02,049 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1017 transitions. [2022-09-16 11:53:02,050 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:53:02,051 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1017 transitions. [2022-09-16 11:53:02,052 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 339.0) internal successors, (1017), 3 states have internal predecessors, (1017), 0 states have call successors, (0), 0 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 11:53:02,053 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 395.0) internal successors, (1580), 4 states have internal predecessors, (1580), 0 states have call successors, (0), 0 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 11:53:02,054 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 395.0) internal successors, (1580), 4 states have internal predecessors, (1580), 0 states have call successors, (0), 0 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 11:53:02,054 INFO L175 Difference]: Start difference. First operand has 411 places, 565 transitions, 2765 flow. Second operand 3 states and 1017 transitions. [2022-09-16 11:53:02,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 582 transitions, 2924 flow [2022-09-16 11:53:02,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 582 transitions, 2902 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-16 11:53:02,078 INFO L231 Difference]: Finished difference. Result has 412 places, 566 transitions, 2763 flow [2022-09-16 11:53:02,079 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=395, PETRI_DIFFERENCE_MINUEND_FLOW=2743, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=565, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=562, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2763, PETRI_PLACES=412, PETRI_TRANSITIONS=566} [2022-09-16 11:53:02,080 INFO L287 CegarLoopForPetriNet]: 345 programPoint places, 67 predicate places. [2022-09-16 11:53:02,080 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 566 transitions, 2763 flow [2022-09-16 11:53:02,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 0 states have call successors, (0), 0 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 11:53:02,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:53:02,080 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:53:02,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-09-16 11:53:02,081 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-09-16 11:53:02,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:53:02,081 INFO L85 PathProgramCache]: Analyzing trace with hash -95827372, now seen corresponding path program 1 times [2022-09-16 11:53:02,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:53:02,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34184430] [2022-09-16 11:53:02,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:53:02,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:53:02,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:53:02,183 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 11:53:02,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:53:02,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34184430] [2022-09-16 11:53:02,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34184430] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:53:02,184 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:53:02,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-16 11:53:02,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159519059] [2022-09-16 11:53:02,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:53:02,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 11:53:02,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:53:02,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 11:53:02,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:53:02,186 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 329 out of 395 [2022-09-16 11:53:02,187 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 566 transitions, 2763 flow. Second operand has 3 states, 3 states have (on average 331.6666666666667) internal successors, (995), 3 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:53:02,187 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:53:02,187 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 329 of 395 [2022-09-16 11:53:02,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:53:06,947 INFO L130 PetriNetUnfolder]: 13936/29400 cut-off events. [2022-09-16 11:53:06,947 INFO L131 PetriNetUnfolder]: For 8714/9209 co-relation queries the response was YES. [2022-09-16 11:53:07,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57165 conditions, 29400 events. 13936/29400 cut-off events. For 8714/9209 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 227732 event pairs, 2010 based on Foata normal form. 1020/24060 useless extension candidates. Maximal degree in co-relation 56466. Up to 10323 conditions per place. [2022-09-16 11:53:07,369 INFO L137 encePairwiseOnDemand]: 391/395 looper letters, 49 selfloop transitions, 2 changer transitions 0/588 dead transitions. [2022-09-16 11:53:07,369 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 588 transitions, 2936 flow [2022-09-16 11:53:07,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 11:53:07,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-16 11:53:07,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1040 transitions. [2022-09-16 11:53:07,373 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8776371308016878 [2022-09-16 11:53:07,373 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1040 transitions. [2022-09-16 11:53:07,373 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1040 transitions. [2022-09-16 11:53:07,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:53:07,373 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1040 transitions. [2022-09-16 11:53:07,375 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 346.6666666666667) internal successors, (1040), 3 states have internal predecessors, (1040), 0 states have call successors, (0), 0 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 11:53:07,376 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 395.0) internal successors, (1580), 4 states have internal predecessors, (1580), 0 states have call successors, (0), 0 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 11:53:07,377 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 395.0) internal successors, (1580), 4 states have internal predecessors, (1580), 0 states have call successors, (0), 0 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 11:53:07,377 INFO L175 Difference]: Start difference. First operand has 412 places, 566 transitions, 2763 flow. Second operand 3 states and 1040 transitions. [2022-09-16 11:53:07,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 588 transitions, 2936 flow [2022-09-16 11:53:07,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 588 transitions, 2926 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-16 11:53:07,411 INFO L231 Difference]: Finished difference. Result has 413 places, 567 transitions, 2771 flow [2022-09-16 11:53:07,412 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=395, PETRI_DIFFERENCE_MINUEND_FLOW=2757, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=566, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=564, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2771, PETRI_PLACES=413, PETRI_TRANSITIONS=567} [2022-09-16 11:53:07,412 INFO L287 CegarLoopForPetriNet]: 345 programPoint places, 68 predicate places. [2022-09-16 11:53:07,412 INFO L495 AbstractCegarLoop]: Abstraction has has 413 places, 567 transitions, 2771 flow [2022-09-16 11:53:07,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 331.6666666666667) internal successors, (995), 3 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:53:07,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:53:07,413 INFO L208 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:53:07,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-09-16 11:53:07,413 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-09-16 11:53:07,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:53:07,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1372949698, now seen corresponding path program 1 times [2022-09-16 11:53:07,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:53:07,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81492470] [2022-09-16 11:53:07,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:53:07,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:53:07,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:53:07,505 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-09-16 11:53:07,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:53:07,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81492470] [2022-09-16 11:53:07,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81492470] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:53:07,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317759380] [2022-09-16 11:53:07,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:53:07,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:53:07,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:53:07,508 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) [2022-09-16 11:53:07,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-09-16 11:53:07,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:53:07,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 474 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:53:07,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:53:07,756 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-09-16 11:53:07,756 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:53:07,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1317759380] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:53:07,756 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:53:07,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-09-16 11:53:07,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518878303] [2022-09-16 11:53:07,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:53:07,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:53:07,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:53:07,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:53:07,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-09-16 11:53:07,759 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 327 out of 395 [2022-09-16 11:53:07,760 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 567 transitions, 2771 flow. Second operand has 4 states, 4 states have (on average 329.25) internal successors, (1317), 4 states have internal predecessors, (1317), 0 states have call successors, (0), 0 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 11:53:07,760 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:53:07,760 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 327 of 395 [2022-09-16 11:53:07,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:53:10,836 INFO L130 PetriNetUnfolder]: 8056/19695 cut-off events. [2022-09-16 11:53:10,836 INFO L131 PetriNetUnfolder]: For 5370/5670 co-relation queries the response was YES. [2022-09-16 11:53:10,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36136 conditions, 19695 events. 8056/19695 cut-off events. For 5370/5670 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 150205 event pairs, 1560 based on Foata normal form. 195/16830 useless extension candidates. Maximal degree in co-relation 35436. Up to 9587 conditions per place. [2022-09-16 11:53:11,018 INFO L137 encePairwiseOnDemand]: 390/395 looper letters, 27 selfloop transitions, 3 changer transitions 0/565 dead transitions. [2022-09-16 11:53:11,018 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 565 transitions, 2823 flow [2022-09-16 11:53:11,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:53:11,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:53:11,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1339 transitions. [2022-09-16 11:53:11,020 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8474683544303797 [2022-09-16 11:53:11,020 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1339 transitions. [2022-09-16 11:53:11,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1339 transitions. [2022-09-16 11:53:11,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:53:11,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1339 transitions. [2022-09-16 11:53:11,023 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 334.75) internal successors, (1339), 4 states have internal predecessors, (1339), 0 states have call successors, (0), 0 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 11:53:11,025 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 395.0) internal successors, (1975), 5 states have internal predecessors, (1975), 0 states have call successors, (0), 0 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 11:53:11,026 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 395.0) internal successors, (1975), 5 states have internal predecessors, (1975), 0 states have call successors, (0), 0 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 11:53:11,026 INFO L175 Difference]: Start difference. First operand has 413 places, 567 transitions, 2771 flow. Second operand 4 states and 1339 transitions. [2022-09-16 11:53:11,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 565 transitions, 2823 flow [2022-09-16 11:53:11,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 565 transitions, 2821 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:53:11,052 INFO L231 Difference]: Finished difference. Result has 413 places, 565 transitions, 2767 flow [2022-09-16 11:53:11,052 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=395, PETRI_DIFFERENCE_MINUEND_FLOW=2761, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=565, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=562, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2767, PETRI_PLACES=413, PETRI_TRANSITIONS=565} [2022-09-16 11:53:11,053 INFO L287 CegarLoopForPetriNet]: 345 programPoint places, 68 predicate places. [2022-09-16 11:53:11,053 INFO L495 AbstractCegarLoop]: Abstraction has has 413 places, 565 transitions, 2767 flow [2022-09-16 11:53:11,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 329.25) internal successors, (1317), 4 states have internal predecessors, (1317), 0 states have call successors, (0), 0 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 11:53:11,053 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:53:11,054 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:53:11,080 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-09-16 11:53:11,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-09-16 11:53:11,268 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-09-16 11:53:11,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:53:11,268 INFO L85 PathProgramCache]: Analyzing trace with hash 984416127, now seen corresponding path program 1 times [2022-09-16 11:53:11,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:53:11,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055238579] [2022-09-16 11:53:11,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:53:11,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:53:11,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:53:11,375 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 11:53:11,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:53:11,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055238579] [2022-09-16 11:53:11,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055238579] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:53:11,375 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:53:11,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:53:11,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160212394] [2022-09-16 11:53:11,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:53:11,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 11:53:11,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:53:11,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 11:53:11,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:53:11,379 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 328 out of 395 [2022-09-16 11:53:11,380 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 565 transitions, 2767 flow. Second operand has 3 states, 3 states have (on average 330.6666666666667) internal successors, (992), 3 states have internal predecessors, (992), 0 states have call successors, (0), 0 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 11:53:11,380 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:53:11,380 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 328 of 395 [2022-09-16 11:53:11,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:53:17,292 INFO L130 PetriNetUnfolder]: 18211/36630 cut-off events. [2022-09-16 11:53:17,292 INFO L131 PetriNetUnfolder]: For 10875/11715 co-relation queries the response was YES. [2022-09-16 11:53:17,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70051 conditions, 36630 events. 18211/36630 cut-off events. For 10875/11715 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 292267 event pairs, 1560 based on Foata normal form. 0/30435 useless extension candidates. Maximal degree in co-relation 69351. Up to 13006 conditions per place. [2022-09-16 11:53:17,696 INFO L137 encePairwiseOnDemand]: 390/395 looper letters, 43 selfloop transitions, 4 changer transitions 0/583 dead transitions. [2022-09-16 11:53:17,696 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 583 transitions, 2920 flow [2022-09-16 11:53:17,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 11:53:17,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-16 11:53:17,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1030 transitions. [2022-09-16 11:53:17,698 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.869198312236287 [2022-09-16 11:53:17,698 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1030 transitions. [2022-09-16 11:53:17,698 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1030 transitions. [2022-09-16 11:53:17,699 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:53:17,699 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1030 transitions. [2022-09-16 11:53:17,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 343.3333333333333) internal successors, (1030), 3 states have internal predecessors, (1030), 0 states have call successors, (0), 0 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 11:53:17,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 395.0) internal successors, (1580), 4 states have internal predecessors, (1580), 0 states have call successors, (0), 0 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 11:53:17,702 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 395.0) internal successors, (1580), 4 states have internal predecessors, (1580), 0 states have call successors, (0), 0 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 11:53:17,702 INFO L175 Difference]: Start difference. First operand has 413 places, 565 transitions, 2767 flow. Second operand 3 states and 1030 transitions. [2022-09-16 11:53:17,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 583 transitions, 2920 flow [2022-09-16 11:53:17,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 583 transitions, 2914 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-16 11:53:17,728 INFO L231 Difference]: Finished difference. Result has 414 places, 566 transitions, 2783 flow [2022-09-16 11:53:17,728 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=395, PETRI_DIFFERENCE_MINUEND_FLOW=2761, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=565, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=561, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2783, PETRI_PLACES=414, PETRI_TRANSITIONS=566} [2022-09-16 11:53:17,729 INFO L287 CegarLoopForPetriNet]: 345 programPoint places, 69 predicate places. [2022-09-16 11:53:17,729 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 566 transitions, 2783 flow [2022-09-16 11:53:17,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 330.6666666666667) internal successors, (992), 3 states have internal predecessors, (992), 0 states have call successors, (0), 0 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 11:53:17,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:53:17,729 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:53:17,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-09-16 11:53:17,730 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-09-16 11:53:17,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:53:17,730 INFO L85 PathProgramCache]: Analyzing trace with hash -1561048658, now seen corresponding path program 1 times [2022-09-16 11:53:17,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:53:17,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70205138] [2022-09-16 11:53:17,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:53:17,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:53:17,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:53:17,803 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-09-16 11:53:17,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:53:17,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70205138] [2022-09-16 11:53:17,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70205138] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:53:17,803 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:53:17,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:53:17,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301272906] [2022-09-16 11:53:17,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:53:17,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:53:17,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:53:17,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:53:17,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:53:17,806 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 283 out of 395 [2022-09-16 11:53:17,807 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 566 transitions, 2783 flow. Second operand has 6 states, 6 states have (on average 290.0) internal successors, (1740), 6 states have internal predecessors, (1740), 0 states have call successors, (0), 0 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 11:53:17,807 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:53:17,807 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 283 of 395 [2022-09-16 11:53:17,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:53:22,109 INFO L130 PetriNetUnfolder]: 9597/23886 cut-off events. [2022-09-16 11:53:22,110 INFO L131 PetriNetUnfolder]: For 12367/13919 co-relation queries the response was YES. [2022-09-16 11:53:22,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46938 conditions, 23886 events. 9597/23886 cut-off events. For 12367/13919 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 196375 event pairs, 2276 based on Foata normal form. 12/20948 useless extension candidates. Maximal degree in co-relation 46127. Up to 11364 conditions per place. [2022-09-16 11:53:22,324 INFO L137 encePairwiseOnDemand]: 386/395 looper letters, 267 selfloop transitions, 8 changer transitions 0/587 dead transitions. [2022-09-16 11:53:22,325 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 587 transitions, 3403 flow [2022-09-16 11:53:22,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:53:22,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:53:22,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2080 transitions. [2022-09-16 11:53:22,326 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7522603978300181 [2022-09-16 11:53:22,326 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2080 transitions. [2022-09-16 11:53:22,326 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2080 transitions. [2022-09-16 11:53:22,327 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:53:22,327 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2080 transitions. [2022-09-16 11:53:22,330 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 297.14285714285717) internal successors, (2080), 7 states have internal predecessors, (2080), 0 states have call successors, (0), 0 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 11:53:22,332 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 395.0) internal successors, (3160), 8 states have internal predecessors, (3160), 0 states have call successors, (0), 0 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 11:53:22,332 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 395.0) internal successors, (3160), 8 states have internal predecessors, (3160), 0 states have call successors, (0), 0 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 11:53:22,332 INFO L175 Difference]: Start difference. First operand has 414 places, 566 transitions, 2783 flow. Second operand 7 states and 2080 transitions. [2022-09-16 11:53:22,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 587 transitions, 3403 flow [2022-09-16 11:53:22,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 587 transitions, 3391 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-16 11:53:22,365 INFO L231 Difference]: Finished difference. Result has 419 places, 566 transitions, 2796 flow [2022-09-16 11:53:22,365 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=395, PETRI_DIFFERENCE_MINUEND_FLOW=2775, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=566, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=558, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2796, PETRI_PLACES=419, PETRI_TRANSITIONS=566} [2022-09-16 11:53:22,366 INFO L287 CegarLoopForPetriNet]: 345 programPoint places, 74 predicate places. [2022-09-16 11:53:22,366 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 566 transitions, 2796 flow [2022-09-16 11:53:22,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 290.0) internal successors, (1740), 6 states have internal predecessors, (1740), 0 states have call successors, (0), 0 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 11:53:22,366 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:53:22,367 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:53:22,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-09-16 11:53:22,367 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-09-16 11:53:22,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:53:22,367 INFO L85 PathProgramCache]: Analyzing trace with hash 707872715, now seen corresponding path program 1 times [2022-09-16 11:53:22,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:53:22,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890086460] [2022-09-16 11:53:22,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:53:22,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:53:22,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:53:22,409 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-09-16 11:53:22,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:53:22,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890086460] [2022-09-16 11:53:22,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890086460] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:53:22,410 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:53:22,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:53:22,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222680877] [2022-09-16 11:53:22,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:53:22,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 11:53:22,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:53:22,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 11:53:22,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:53:22,412 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 320 out of 395 [2022-09-16 11:53:22,413 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 566 transitions, 2796 flow. Second operand has 3 states, 3 states have (on average 324.6666666666667) internal successors, (974), 3 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) [2022-09-16 11:53:22,413 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:53:22,413 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 320 of 395 [2022-09-16 11:53:22,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:53:29,018 INFO L130 PetriNetUnfolder]: 20430/36726 cut-off events. [2022-09-16 11:53:29,019 INFO L131 PetriNetUnfolder]: For 13094/15462 co-relation queries the response was YES. [2022-09-16 11:53:29,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79885 conditions, 36726 events. 20430/36726 cut-off events. For 13094/15462 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 259716 event pairs, 4096 based on Foata normal form. 230/33073 useless extension candidates. Maximal degree in co-relation 79182. Up to 18981 conditions per place. [2022-09-16 11:53:29,471 INFO L137 encePairwiseOnDemand]: 389/395 looper letters, 52 selfloop transitions, 4 changer transitions 0/583 dead transitions. [2022-09-16 11:53:29,472 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 583 transitions, 2963 flow [2022-09-16 11:53:29,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 11:53:29,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-16 11:53:29,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1016 transitions. [2022-09-16 11:53:29,473 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8573839662447258 [2022-09-16 11:53:29,473 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1016 transitions. [2022-09-16 11:53:29,473 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1016 transitions. [2022-09-16 11:53:29,473 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:53:29,473 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1016 transitions. [2022-09-16 11:53:29,475 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 338.6666666666667) internal successors, (1016), 3 states have internal predecessors, (1016), 0 states have call successors, (0), 0 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 11:53:29,476 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 395.0) internal successors, (1580), 4 states have internal predecessors, (1580), 0 states have call successors, (0), 0 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 11:53:29,476 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 395.0) internal successors, (1580), 4 states have internal predecessors, (1580), 0 states have call successors, (0), 0 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 11:53:29,476 INFO L175 Difference]: Start difference. First operand has 419 places, 566 transitions, 2796 flow. Second operand 3 states and 1016 transitions. [2022-09-16 11:53:29,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 583 transitions, 2963 flow [2022-09-16 11:53:29,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 583 transitions, 2951 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-16 11:53:29,605 INFO L231 Difference]: Finished difference. Result has 419 places, 567 transitions, 2810 flow [2022-09-16 11:53:29,605 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=395, PETRI_DIFFERENCE_MINUEND_FLOW=2784, PETRI_DIFFERENCE_MINUEND_PLACES=415, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=566, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=562, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2810, PETRI_PLACES=419, PETRI_TRANSITIONS=567} [2022-09-16 11:53:29,606 INFO L287 CegarLoopForPetriNet]: 345 programPoint places, 74 predicate places. [2022-09-16 11:53:29,606 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 567 transitions, 2810 flow [2022-09-16 11:53:29,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 324.6666666666667) internal successors, (974), 3 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) [2022-09-16 11:53:29,606 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:53:29,606 INFO L208 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:53:29,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-09-16 11:53:29,606 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-09-16 11:53:29,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:53:29,607 INFO L85 PathProgramCache]: Analyzing trace with hash -525057864, now seen corresponding path program 1 times [2022-09-16 11:53:29,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:53:29,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701889191] [2022-09-16 11:53:29,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:53:29,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:53:29,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:53:29,692 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:53:29,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:53:29,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701889191] [2022-09-16 11:53:29,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701889191] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:53:29,692 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:53:29,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-09-16 11:53:29,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7546415] [2022-09-16 11:53:29,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:53:29,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:53:29,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:53:29,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:53:29,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:53:29,695 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 283 out of 395 [2022-09-16 11:53:29,696 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 567 transitions, 2810 flow. Second operand has 6 states, 6 states have (on average 289.6666666666667) internal successors, (1738), 6 states have internal predecessors, (1738), 0 states have call successors, (0), 0 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 11:53:29,696 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:53:29,696 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 283 of 395 [2022-09-16 11:53:29,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:53:34,658 INFO L130 PetriNetUnfolder]: 10041/28327 cut-off events. [2022-09-16 11:53:34,659 INFO L131 PetriNetUnfolder]: For 12915/14925 co-relation queries the response was YES. [2022-09-16 11:53:34,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54401 conditions, 28327 events. 10041/28327 cut-off events. For 12915/14925 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 254608 event pairs, 2593 based on Foata normal form. 480/25891 useless extension candidates. Maximal degree in co-relation 50358. Up to 12584 conditions per place. [2022-09-16 11:53:34,913 INFO L137 encePairwiseOnDemand]: 382/395 looper letters, 386 selfloop transitions, 29 changer transitions 15/743 dead transitions. [2022-09-16 11:53:34,913 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 743 transitions, 4764 flow [2022-09-16 11:53:34,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-16 11:53:34,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-09-16 11:53:34,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2673 transitions. [2022-09-16 11:53:34,915 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7518987341772152 [2022-09-16 11:53:34,915 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2673 transitions. [2022-09-16 11:53:34,915 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2673 transitions. [2022-09-16 11:53:34,916 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:53:34,916 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2673 transitions. [2022-09-16 11:53:34,918 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 297.0) internal successors, (2673), 9 states have internal predecessors, (2673), 0 states have call successors, (0), 0 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 11:53:34,920 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 395.0) internal successors, (3950), 10 states have internal predecessors, (3950), 0 states have call successors, (0), 0 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 11:53:34,921 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 395.0) internal successors, (3950), 10 states have internal predecessors, (3950), 0 states have call successors, (0), 0 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 11:53:34,921 INFO L175 Difference]: Start difference. First operand has 419 places, 567 transitions, 2810 flow. Second operand 9 states and 2673 transitions. [2022-09-16 11:53:34,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 743 transitions, 4764 flow [2022-09-16 11:53:34,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 743 transitions, 4756 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-16 11:53:34,957 INFO L231 Difference]: Finished difference. Result has 427 places, 568 transitions, 2878 flow [2022-09-16 11:53:34,958 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=395, PETRI_DIFFERENCE_MINUEND_FLOW=2802, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=567, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=538, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2878, PETRI_PLACES=427, PETRI_TRANSITIONS=568} [2022-09-16 11:53:34,958 INFO L287 CegarLoopForPetriNet]: 345 programPoint places, 82 predicate places. [2022-09-16 11:53:34,958 INFO L495 AbstractCegarLoop]: Abstraction has has 427 places, 568 transitions, 2878 flow [2022-09-16 11:53:34,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 289.6666666666667) internal successors, (1738), 6 states have internal predecessors, (1738), 0 states have call successors, (0), 0 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 11:53:34,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:53:34,958 INFO L208 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:53:34,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-09-16 11:53:34,959 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-09-16 11:53:34,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:53:34,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1361161632, now seen corresponding path program 1 times [2022-09-16 11:53:34,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:53:34,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078650913] [2022-09-16 11:53:34,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:53:34,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:53:35,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:53:35,098 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-09-16 11:53:35,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:53:35,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078650913] [2022-09-16 11:53:35,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078650913] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:53:35,099 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:53:35,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:53:35,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95110497] [2022-09-16 11:53:35,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:53:35,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:53:35,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:53:35,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:53:35,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:53:35,101 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 326 out of 395 [2022-09-16 11:53:35,102 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 427 places, 568 transitions, 2878 flow. Second operand has 4 states, 4 states have (on average 329.25) internal successors, (1317), 4 states have internal predecessors, (1317), 0 states have call successors, (0), 0 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 11:53:35,102 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:53:35,102 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 326 of 395 [2022-09-16 11:53:35,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:53:41,407 INFO L130 PetriNetUnfolder]: 12660/34887 cut-off events. [2022-09-16 11:53:41,408 INFO L131 PetriNetUnfolder]: For 21899/24519 co-relation queries the response was YES. [2022-09-16 11:53:41,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72016 conditions, 34887 events. 12660/34887 cut-off events. For 21899/24519 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 320949 event pairs, 1847 based on Foata normal form. 1268/32140 useless extension candidates. Maximal degree in co-relation 66713. Up to 7969 conditions per place. [2022-09-16 11:53:42,002 INFO L137 encePairwiseOnDemand]: 387/395 looper letters, 51 selfloop transitions, 6 changer transitions 1/588 dead transitions. [2022-09-16 11:53:42,002 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 588 transitions, 3073 flow [2022-09-16 11:53:42,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:53:42,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:53:42,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1356 transitions. [2022-09-16 11:53:42,004 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8582278481012658 [2022-09-16 11:53:42,004 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1356 transitions. [2022-09-16 11:53:42,005 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1356 transitions. [2022-09-16 11:53:42,005 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:53:42,005 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1356 transitions. [2022-09-16 11:53:42,006 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 339.0) internal successors, (1356), 4 states have internal predecessors, (1356), 0 states have call successors, (0), 0 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 11:53:42,007 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 395.0) internal successors, (1975), 5 states have internal predecessors, (1975), 0 states have call successors, (0), 0 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 11:53:42,007 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 395.0) internal successors, (1975), 5 states have internal predecessors, (1975), 0 states have call successors, (0), 0 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 11:53:42,007 INFO L175 Difference]: Start difference. First operand has 427 places, 568 transitions, 2878 flow. Second operand 4 states and 1356 transitions. [2022-09-16 11:53:42,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 430 places, 588 transitions, 3073 flow [2022-09-16 11:53:42,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 426 places, 588 transitions, 3042 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-16 11:53:42,037 INFO L231 Difference]: Finished difference. Result has 427 places, 568 transitions, 2864 flow [2022-09-16 11:53:42,038 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=395, PETRI_DIFFERENCE_MINUEND_FLOW=2847, PETRI_DIFFERENCE_MINUEND_PLACES=423, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=568, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=562, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2864, PETRI_PLACES=427, PETRI_TRANSITIONS=568} [2022-09-16 11:53:42,038 INFO L287 CegarLoopForPetriNet]: 345 programPoint places, 82 predicate places. [2022-09-16 11:53:42,038 INFO L495 AbstractCegarLoop]: Abstraction has has 427 places, 568 transitions, 2864 flow [2022-09-16 11:53:42,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 329.25) internal successors, (1317), 4 states have internal predecessors, (1317), 0 states have call successors, (0), 0 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 11:53:42,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:53:42,038 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:53:42,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-09-16 11:53:42,039 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-09-16 11:53:42,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:53:42,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1749054760, now seen corresponding path program 1 times [2022-09-16 11:53:42,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:53:42,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189187164] [2022-09-16 11:53:42,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:53:42,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:53:42,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:53:42,152 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-09-16 11:53:42,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:53:42,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189187164] [2022-09-16 11:53:42,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189187164] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:53:42,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1104718135] [2022-09-16 11:53:42,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:53:42,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:53:42,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:53:42,154 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) [2022-09-16 11:53:42,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-09-16 11:53:42,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:53:42,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:53:42,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:53:42,390 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-09-16 11:53:42,390 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:53:42,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1104718135] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:53:42,390 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:53:42,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-09-16 11:53:42,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960906364] [2022-09-16 11:53:42,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:53:42,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:53:42,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:53:42,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:53:42,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-09-16 11:53:42,393 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 327 out of 395 [2022-09-16 11:53:42,394 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 427 places, 568 transitions, 2864 flow. Second operand has 4 states, 4 states have (on average 329.5) internal successors, (1318), 4 states have internal predecessors, (1318), 0 states have call successors, (0), 0 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 11:53:42,394 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:53:42,394 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 327 of 395 [2022-09-16 11:53:42,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:53:46,928 INFO L130 PetriNetUnfolder]: 7776/26101 cut-off events. [2022-09-16 11:53:46,928 INFO L131 PetriNetUnfolder]: For 15642/16846 co-relation queries the response was YES. [2022-09-16 11:53:47,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51127 conditions, 26101 events. 7776/26101 cut-off events. For 15642/16846 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 245280 event pairs, 1400 based on Foata normal form. 224/24085 useless extension candidates. Maximal degree in co-relation 47230. Up to 9442 conditions per place. [2022-09-16 11:53:47,149 INFO L137 encePairwiseOnDemand]: 390/395 looper letters, 27 selfloop transitions, 3 changer transitions 0/566 dead transitions. [2022-09-16 11:53:47,149 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 566 transitions, 2916 flow [2022-09-16 11:53:47,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:53:47,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:53:47,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1337 transitions. [2022-09-16 11:53:47,151 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8462025316455696 [2022-09-16 11:53:47,151 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1337 transitions. [2022-09-16 11:53:47,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1337 transitions. [2022-09-16 11:53:47,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:53:47,151 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1337 transitions. [2022-09-16 11:53:47,152 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 334.25) internal successors, (1337), 4 states have internal predecessors, (1337), 0 states have call successors, (0), 0 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 11:53:47,153 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 395.0) internal successors, (1975), 5 states have internal predecessors, (1975), 0 states have call successors, (0), 0 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 11:53:47,153 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 395.0) internal successors, (1975), 5 states have internal predecessors, (1975), 0 states have call successors, (0), 0 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 11:53:47,153 INFO L175 Difference]: Start difference. First operand has 427 places, 568 transitions, 2864 flow. Second operand 4 states and 1337 transitions. [2022-09-16 11:53:47,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 566 transitions, 2916 flow [2022-09-16 11:53:47,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 424 places, 566 transitions, 2904 flow, removed 1 selfloop flow, removed 3 redundant places. [2022-09-16 11:53:47,180 INFO L231 Difference]: Finished difference. Result has 424 places, 566 transitions, 2850 flow [2022-09-16 11:53:47,180 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=395, PETRI_DIFFERENCE_MINUEND_FLOW=2844, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=566, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=563, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2850, PETRI_PLACES=424, PETRI_TRANSITIONS=566} [2022-09-16 11:53:47,180 INFO L287 CegarLoopForPetriNet]: 345 programPoint places, 79 predicate places. [2022-09-16 11:53:47,180 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 566 transitions, 2850 flow [2022-09-16 11:53:47,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 329.5) internal successors, (1318), 4 states have internal predecessors, (1318), 0 states have call successors, (0), 0 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 11:53:47,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:53:47,181 INFO L208 CegarLoopForPetriNet]: trace histogram [15, 15, 15, 15, 15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:53:47,200 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-09-16 11:53:47,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-09-16 11:53:47,387 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-09-16 11:53:47,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:53:47,388 INFO L85 PathProgramCache]: Analyzing trace with hash 483695, now seen corresponding path program 2 times [2022-09-16 11:53:47,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:53:47,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773391207] [2022-09-16 11:53:47,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:53:47,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:53:47,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:53:47,735 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:53:47,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:53:47,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773391207] [2022-09-16 11:53:47,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773391207] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:53:47,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [653689730] [2022-09-16 11:53:47,736 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:53:47,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:53:47,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:53:47,740 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:53:47,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-09-16 11:53:47,845 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-16 11:53:47,845 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:53:47,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 7 conjunts are in the unsatisfiable core [2022-09-16 11:53:47,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:53:48,110 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 833 trivial. 0 not checked. [2022-09-16 11:53:48,110 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:53:48,342 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 833 trivial. 0 not checked. [2022-09-16 11:53:48,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [653689730] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:53:48,342 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:53:48,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 7, 7] total 37 [2022-09-16 11:53:48,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604791511] [2022-09-16 11:53:48,343 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:53:48,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-09-16 11:53:48,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:53:48,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-09-16 11:53:48,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=313, Invalid=1093, Unknown=0, NotChecked=0, Total=1406 [2022-09-16 11:53:48,352 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 260 out of 395 [2022-09-16 11:53:48,358 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 566 transitions, 2850 flow. Second operand has 38 states, 38 states have (on average 263.7631578947368) internal successors, (10023), 38 states have internal predecessors, (10023), 0 states have call successors, (0), 0 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 11:53:48,358 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:53:48,358 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 260 of 395 [2022-09-16 11:53:48,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:53:57,236 INFO L130 PetriNetUnfolder]: 7286/27729 cut-off events. [2022-09-16 11:53:57,236 INFO L131 PetriNetUnfolder]: For 17617/18865 co-relation queries the response was YES. [2022-09-16 11:53:57,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53662 conditions, 27729 events. 7286/27729 cut-off events. For 17617/18865 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 271218 event pairs, 1216 based on Foata normal form. 432/25665 useless extension candidates. Maximal degree in co-relation 46461. Up to 3682 conditions per place. [2022-09-16 11:53:57,417 INFO L137 encePairwiseOnDemand]: 358/395 looper letters, 346 selfloop transitions, 351 changer transitions 442/1281 dead transitions. [2022-09-16 11:53:57,417 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 555 places, 1281 transitions, 7812 flow [2022-09-16 11:53:57,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2022-09-16 11:53:57,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2022-09-16 11:53:57,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 36155 transitions. [2022-09-16 11:53:57,442 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6780121894045945 [2022-09-16 11:53:57,443 INFO L72 ComplementDD]: Start complementDD. Operand 135 states and 36155 transitions. [2022-09-16 11:53:57,443 INFO L73 IsDeterministic]: Start isDeterministic. Operand 135 states and 36155 transitions. [2022-09-16 11:53:57,453 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:53:57,453 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 135 states and 36155 transitions. [2022-09-16 11:53:57,489 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 136 states, 135 states have (on average 267.81481481481484) internal successors, (36155), 135 states have internal predecessors, (36155), 0 states have call successors, (0), 0 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 11:53:57,533 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 136 states, 136 states have (on average 395.0) internal successors, (53720), 136 states have internal predecessors, (53720), 0 states have call successors, (0), 0 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 11:53:57,545 INFO L81 ComplementDD]: Finished complementDD. Result has 136 states, 136 states have (on average 395.0) internal successors, (53720), 136 states have internal predecessors, (53720), 0 states have call successors, (0), 0 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 11:53:57,545 INFO L175 Difference]: Start difference. First operand has 424 places, 566 transitions, 2850 flow. Second operand 135 states and 36155 transitions. [2022-09-16 11:53:57,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 555 places, 1281 transitions, 7812 flow [2022-09-16 11:53:57,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 552 places, 1281 transitions, 7806 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-16 11:53:57,582 INFO L231 Difference]: Finished difference. Result has 556 places, 561 transitions, 3800 flow [2022-09-16 11:53:57,583 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=395, PETRI_DIFFERENCE_MINUEND_FLOW=2808, PETRI_DIFFERENCE_MINUEND_PLACES=418, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=563, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=246, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=135, PETRI_FLOW=3800, PETRI_PLACES=556, PETRI_TRANSITIONS=561} [2022-09-16 11:53:57,583 INFO L287 CegarLoopForPetriNet]: 345 programPoint places, 211 predicate places. [2022-09-16 11:53:57,583 INFO L495 AbstractCegarLoop]: Abstraction has has 556 places, 561 transitions, 3800 flow [2022-09-16 11:53:57,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 263.7631578947368) internal successors, (10023), 38 states have internal predecessors, (10023), 0 states have call successors, (0), 0 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 11:53:57,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:53:57,584 INFO L208 CegarLoopForPetriNet]: trace histogram [17, 17, 17, 17, 17, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:53:57,601 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-09-16 11:53:57,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:53:57,785 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-09-16 11:53:57,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:53:57,785 INFO L85 PathProgramCache]: Analyzing trace with hash -769479398, now seen corresponding path program 1 times [2022-09-16 11:53:57,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:53:57,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387678473] [2022-09-16 11:53:57,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:53:57,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:53:57,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:53:58,247 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:53:58,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:53:58,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387678473] [2022-09-16 11:53:58,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387678473] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:53:58,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1219901130] [2022-09-16 11:53:58,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:53:58,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:53:58,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:53:58,252 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:53:58,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-09-16 11:53:58,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:53:58,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 573 conjuncts, 35 conjunts are in the unsatisfiable core [2022-09-16 11:53:58,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:53:58,603 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:53:58,604 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:53:59,534 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:53:59,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1219901130] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:53:59,534 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:53:59,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 71 [2022-09-16 11:53:59,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726473994] [2022-09-16 11:53:59,534 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:53:59,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2022-09-16 11:53:59,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:53:59,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2022-09-16 11:53:59,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1331, Invalid=3781, Unknown=0, NotChecked=0, Total=5112 [2022-09-16 11:53:59,546 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 285 out of 395 [2022-09-16 11:53:59,554 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 556 places, 561 transitions, 3800 flow. Second operand has 72 states, 72 states have (on average 288.44444444444446) internal successors, (20768), 72 states have internal predecessors, (20768), 0 states have call successors, (0), 0 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 11:53:59,554 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:53:59,554 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 285 of 395 [2022-09-16 11:53:59,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:54:03,715 INFO L130 PetriNetUnfolder]: 176/6011 cut-off events. [2022-09-16 11:54:03,715 INFO L131 PetriNetUnfolder]: For 24082/24082 co-relation queries the response was YES. [2022-09-16 11:54:03,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15586 conditions, 6011 events. 176/6011 cut-off events. For 24082/24082 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 39919 event pairs, 0 based on Foata normal form. 108/6119 useless extension candidates. Maximal degree in co-relation 15552. Up to 757 conditions per place. [2022-09-16 11:54:03,734 INFO L137 encePairwiseOnDemand]: 370/395 looper letters, 675 selfloop transitions, 518 changer transitions 0/1425 dead transitions. [2022-09-16 11:54:03,734 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 562 places, 1425 transitions, 11647 flow [2022-09-16 11:54:03,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2022-09-16 11:54:03,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2022-09-16 11:54:03,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 30869 transitions. [2022-09-16 11:54:03,758 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7514362220058423 [2022-09-16 11:54:03,759 INFO L72 ComplementDD]: Start complementDD. Operand 104 states and 30869 transitions. [2022-09-16 11:54:03,759 INFO L73 IsDeterministic]: Start isDeterministic. Operand 104 states and 30869 transitions. [2022-09-16 11:54:03,769 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:54:03,769 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 104 states and 30869 transitions. [2022-09-16 11:54:03,799 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 105 states, 104 states have (on average 296.8173076923077) internal successors, (30869), 104 states have internal predecessors, (30869), 0 states have call successors, (0), 0 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 11:54:03,834 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 105 states, 105 states have (on average 395.0) internal successors, (41475), 105 states have internal predecessors, (41475), 0 states have call successors, (0), 0 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 11:54:03,842 INFO L81 ComplementDD]: Finished complementDD. Result has 105 states, 105 states have (on average 395.0) internal successors, (41475), 105 states have internal predecessors, (41475), 0 states have call successors, (0), 0 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 11:54:03,843 INFO L175 Difference]: Start difference. First operand has 556 places, 561 transitions, 3800 flow. Second operand 104 states and 30869 transitions. [2022-09-16 11:54:03,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 562 places, 1425 transitions, 11647 flow [2022-09-16 11:54:03,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 527 places, 1425 transitions, 10815 flow, removed 257 selfloop flow, removed 35 redundant places. [2022-09-16 11:54:03,914 INFO L231 Difference]: Finished difference. Result has 546 places, 837 transitions, 7293 flow [2022-09-16 11:54:03,914 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=395, PETRI_DIFFERENCE_MINUEND_FLOW=3439, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=561, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=253, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=104, PETRI_FLOW=7293, PETRI_PLACES=546, PETRI_TRANSITIONS=837} [2022-09-16 11:54:03,915 INFO L287 CegarLoopForPetriNet]: 345 programPoint places, 201 predicate places. [2022-09-16 11:54:03,915 INFO L495 AbstractCegarLoop]: Abstraction has has 546 places, 837 transitions, 7293 flow [2022-09-16 11:54:03,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 288.44444444444446) internal successors, (20768), 72 states have internal predecessors, (20768), 0 states have call successors, (0), 0 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 11:54:03,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:54:03,918 INFO L208 CegarLoopForPetriNet]: trace histogram [35, 35, 35, 35, 35, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:54:03,943 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-09-16 11:54:04,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-09-16 11:54:04,132 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-09-16 11:54:04,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:54:04,132 INFO L85 PathProgramCache]: Analyzing trace with hash -431423814, now seen corresponding path program 2 times [2022-09-16 11:54:04,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:54:04,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401308728] [2022-09-16 11:54:04,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:54:04,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:54:04,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:54:05,646 INFO L134 CoverageAnalysis]: Checked inductivity of 5253 backedges. 0 proven. 5253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:54:05,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:54:05,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401308728] [2022-09-16 11:54:05,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401308728] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:54:05,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143103980] [2022-09-16 11:54:05,647 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:54:05,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:54:05,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:54:05,652 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:54:05,653 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-09-16 11:54:05,795 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-16 11:54:05,795 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:54:05,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 7 conjunts are in the unsatisfiable core [2022-09-16 11:54:05,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:54:06,313 INFO L134 CoverageAnalysis]: Checked inductivity of 5253 backedges. 0 proven. 170 refuted. 0 times theorem prover too weak. 5083 trivial. 0 not checked. [2022-09-16 11:54:06,313 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:54:06,780 INFO L134 CoverageAnalysis]: Checked inductivity of 5253 backedges. 0 proven. 170 refuted. 0 times theorem prover too weak. 5083 trivial. 0 not checked. [2022-09-16 11:54:06,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1143103980] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:54:06,780 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:54:06,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 7, 7] total 77 [2022-09-16 11:54:06,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185913581] [2022-09-16 11:54:06,780 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:54:06,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2022-09-16 11:54:06,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:54:06,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2022-09-16 11:54:06,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1413, Invalid=4593, Unknown=0, NotChecked=0, Total=6006 [2022-09-16 11:54:06,792 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 260 out of 395 [2022-09-16 11:54:06,800 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 546 places, 837 transitions, 7293 flow. Second operand has 78 states, 78 states have (on average 263.7307692307692) internal successors, (20571), 78 states have internal predecessors, (20571), 0 states have call successors, (0), 0 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 11:54:06,800 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:54:06,800 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 260 of 395 [2022-09-16 11:54:06,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:54:18,304 INFO L130 PetriNetUnfolder]: 112/3328 cut-off events. [2022-09-16 11:54:18,304 INFO L131 PetriNetUnfolder]: For 10425/10425 co-relation queries the response was YES. [2022-09-16 11:54:18,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8721 conditions, 3328 events. 112/3328 cut-off events. For 10425/10425 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 16283 event pairs, 0 based on Foata normal form. 4/3332 useless extension candidates. Maximal degree in co-relation 8676. Up to 339 conditions per place. [2022-09-16 11:54:18,317 INFO L137 encePairwiseOnDemand]: 362/395 looper letters, 725 selfloop transitions, 771 changer transitions 0/1670 dead transitions. [2022-09-16 11:54:18,317 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 839 places, 1670 transitions, 14031 flow [2022-09-16 11:54:18,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 295 states. [2022-09-16 11:54:18,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2022-09-16 11:54:18,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 78200 transitions. [2022-09-16 11:54:18,370 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6711006221840806 [2022-09-16 11:54:18,370 INFO L72 ComplementDD]: Start complementDD. Operand 295 states and 78200 transitions. [2022-09-16 11:54:18,370 INFO L73 IsDeterministic]: Start isDeterministic. Operand 295 states and 78200 transitions. [2022-09-16 11:54:18,391 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:54:18,391 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 295 states and 78200 transitions. [2022-09-16 11:54:18,470 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 296 states, 295 states have (on average 265.08474576271186) internal successors, (78200), 295 states have internal predecessors, (78200), 0 states have call successors, (0), 0 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 11:54:18,572 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 296 states, 296 states have (on average 395.0) internal successors, (116920), 296 states have internal predecessors, (116920), 0 states have call successors, (0), 0 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 11:54:18,605 INFO L81 ComplementDD]: Finished complementDD. Result has 296 states, 296 states have (on average 395.0) internal successors, (116920), 296 states have internal predecessors, (116920), 0 states have call successors, (0), 0 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 11:54:18,606 INFO L175 Difference]: Start difference. First operand has 546 places, 837 transitions, 7293 flow. Second operand 295 states and 78200 transitions. [2022-09-16 11:54:18,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 839 places, 1670 transitions, 14031 flow [2022-09-16 11:54:18,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 794 places, 1670 transitions, 13620 flow, removed 3 selfloop flow, removed 45 redundant places. [2022-09-16 11:54:18,669 INFO L231 Difference]: Finished difference. Result has 798 places, 1045 transitions, 9437 flow [2022-09-16 11:54:18,670 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=395, PETRI_DIFFERENCE_MINUEND_FLOW=6816, PETRI_DIFFERENCE_MINUEND_PLACES=500, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=836, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=572, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=295, PETRI_FLOW=9437, PETRI_PLACES=798, PETRI_TRANSITIONS=1045} [2022-09-16 11:54:18,670 INFO L287 CegarLoopForPetriNet]: 345 programPoint places, 453 predicate places. [2022-09-16 11:54:18,670 INFO L495 AbstractCegarLoop]: Abstraction has has 798 places, 1045 transitions, 9437 flow [2022-09-16 11:54:18,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 78 states have (on average 263.7307692307692) internal successors, (20571), 78 states have internal predecessors, (20571), 0 states have call successors, (0), 0 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 11:54:18,673 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:54:18,673 INFO L208 CegarLoopForPetriNet]: trace histogram [37, 37, 37, 37, 37, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:54:18,691 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-09-16 11:54:18,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:54:18,875 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-09-16 11:54:18,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:54:18,875 INFO L85 PathProgramCache]: Analyzing trace with hash -709612995, now seen corresponding path program 1 times [2022-09-16 11:54:18,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:54:18,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20977653] [2022-09-16 11:54:18,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:54:18,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:54:18,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:54:20,350 INFO L134 CoverageAnalysis]: Checked inductivity of 5886 backedges. 0 proven. 5886 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:54:20,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:54:20,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20977653] [2022-09-16 11:54:20,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20977653] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:54:20,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1231919197] [2022-09-16 11:54:20,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:54:20,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:54:20,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:54:20,352 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:54:20,353 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-09-16 11:54:20,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:54:20,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 942 conjuncts, 75 conjunts are in the unsatisfiable core [2022-09-16 11:54:20,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:54:20,992 INFO L134 CoverageAnalysis]: Checked inductivity of 5886 backedges. 0 proven. 5886 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:54:20,993 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:54:24,654 INFO L134 CoverageAnalysis]: Checked inductivity of 5886 backedges. 0 proven. 5886 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:54:24,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1231919197] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:54:24,654 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:54:24,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75, 75] total 151 [2022-09-16 11:54:24,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537933677] [2022-09-16 11:54:24,655 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:54:24,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 152 states [2022-09-16 11:54:24,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:54:24,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 152 interpolants. [2022-09-16 11:54:24,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5851, Invalid=17101, Unknown=0, NotChecked=0, Total=22952 [2022-09-16 11:54:24,674 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 285 out of 395 [2022-09-16 11:54:24,691 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 798 places, 1045 transitions, 9437 flow. Second operand has 152 states, 152 states have (on average 288.49342105263156) internal successors, (43851), 152 states have internal predecessors, (43851), 0 states have call successors, (0), 0 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 11:54:24,691 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:54:24,691 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 285 of 395 [2022-09-16 11:54:24,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:54:39,579 INFO L130 PetriNetUnfolder]: 226/6641 cut-off events. [2022-09-16 11:54:39,579 INFO L131 PetriNetUnfolder]: For 44619/44619 co-relation queries the response was YES. [2022-09-16 11:54:39,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19206 conditions, 6641 events. 226/6641 cut-off events. For 44619/44619 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 34278 event pairs, 0 based on Foata normal form. 38/6679 useless extension candidates. Maximal degree in co-relation 19156. Up to 720 conditions per place. [2022-09-16 11:54:39,622 INFO L137 encePairwiseOnDemand]: 371/395 looper letters, 1434 selfloop transitions, 1118 changer transitions 0/2911 dead transitions. [2022-09-16 11:54:39,622 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1021 places, 2911 transitions, 29511 flow [2022-09-16 11:54:39,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 224 states. [2022-09-16 11:54:39,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2022-09-16 11:54:39,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 66430 transitions. [2022-09-16 11:54:39,672 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7507911392405063 [2022-09-16 11:54:39,672 INFO L72 ComplementDD]: Start complementDD. Operand 224 states and 66430 transitions. [2022-09-16 11:54:39,672 INFO L73 IsDeterministic]: Start isDeterministic. Operand 224 states and 66430 transitions. [2022-09-16 11:54:39,688 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:54:39,688 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 224 states and 66430 transitions. [2022-09-16 11:54:39,926 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 225 states, 224 states have (on average 296.5625) internal successors, (66430), 224 states have internal predecessors, (66430), 0 states have call successors, (0), 0 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 11:54:39,984 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 225 states, 225 states have (on average 395.0) internal successors, (88875), 225 states have internal predecessors, (88875), 0 states have call successors, (0), 0 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 11:54:40,002 INFO L81 ComplementDD]: Finished complementDD. Result has 225 states, 225 states have (on average 395.0) internal successors, (88875), 225 states have internal predecessors, (88875), 0 states have call successors, (0), 0 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 11:54:40,003 INFO L175 Difference]: Start difference. First operand has 798 places, 1045 transitions, 9437 flow. Second operand 224 states and 66430 transitions. [2022-09-16 11:54:40,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1021 places, 2911 transitions, 29511 flow [2022-09-16 11:54:40,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 963 places, 2911 transitions, 27892 flow, removed 482 selfloop flow, removed 58 redundant places. [2022-09-16 11:54:40,145 INFO L231 Difference]: Finished difference. Result has 1002 places, 1621 transitions, 18390 flow [2022-09-16 11:54:40,146 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=395, PETRI_DIFFERENCE_MINUEND_FLOW=8809, PETRI_DIFFERENCE_MINUEND_PLACES=740, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1045, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=553, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=488, PETRI_DIFFERENCE_SUBTRAHEND_STATES=224, PETRI_FLOW=18390, PETRI_PLACES=1002, PETRI_TRANSITIONS=1621} [2022-09-16 11:54:40,147 INFO L287 CegarLoopForPetriNet]: 345 programPoint places, 657 predicate places. [2022-09-16 11:54:40,147 INFO L495 AbstractCegarLoop]: Abstraction has has 1002 places, 1621 transitions, 18390 flow [2022-09-16 11:54:40,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 152 states, 152 states have (on average 288.49342105263156) internal successors, (43851), 152 states have internal predecessors, (43851), 0 states have call successors, (0), 0 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 11:54:40,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:54:40,154 INFO L208 CegarLoopForPetriNet]: trace histogram [75, 75, 75, 75, 75, 74, 74, 74, 74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:54:40,172 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-09-16 11:54:40,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:54:40,357 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-09-16 11:54:40,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:54:40,358 INFO L85 PathProgramCache]: Analyzing trace with hash -176433859, now seen corresponding path program 2 times [2022-09-16 11:54:40,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:54:40,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136686784] [2022-09-16 11:54:40,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:54:40,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:54:40,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:54:45,837 INFO L134 CoverageAnalysis]: Checked inductivity of 24753 backedges. 0 proven. 24753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:54:45,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:54:45,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136686784] [2022-09-16 11:54:45,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136686784] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:54:45,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715233621] [2022-09-16 11:54:45,837 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:54:45,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:54:45,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:54:45,841 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:54:45,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-09-16 11:54:46,024 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-16 11:54:46,024 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:54:46,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 7 conjunts are in the unsatisfiable core [2022-09-16 11:54:46,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:54:46,936 INFO L134 CoverageAnalysis]: Checked inductivity of 24753 backedges. 0 proven. 370 refuted. 0 times theorem prover too weak. 24383 trivial. 0 not checked. [2022-09-16 11:54:46,936 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:54:47,939 INFO L134 CoverageAnalysis]: Checked inductivity of 24753 backedges. 0 proven. 370 refuted. 0 times theorem prover too weak. 24383 trivial. 0 not checked. [2022-09-16 11:54:47,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [715233621] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:54:47,939 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:54:47,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [151, 7, 7] total 157 [2022-09-16 11:54:47,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819156998] [2022-09-16 11:54:47,940 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:54:47,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 158 states [2022-09-16 11:54:47,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:54:47,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 158 interpolants. [2022-09-16 11:54:47,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6013, Invalid=18793, Unknown=0, NotChecked=0, Total=24806 [2022-09-16 11:54:47,971 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 260 out of 395 [2022-09-16 11:54:47,988 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1002 places, 1621 transitions, 18390 flow. Second operand has 158 states, 158 states have (on average 263.6645569620253) internal successors, (41659), 158 states have internal predecessors, (41659), 0 states have call successors, (0), 0 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 11:54:47,989 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:54:47,989 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 260 of 395 [2022-09-16 11:54:47,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:55:36,348 INFO L130 PetriNetUnfolder]: 232/6807 cut-off events. [2022-09-16 11:55:36,348 INFO L131 PetriNetUnfolder]: For 31702/31702 co-relation queries the response was YES. [2022-09-16 11:55:36,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20863 conditions, 6807 events. 232/6807 cut-off events. For 31702/31702 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 35223 event pairs, 0 based on Foata normal form. 2/6809 useless extension candidates. Maximal degree in co-relation 20775. Up to 698 conditions per place. [2022-09-16 11:55:36,388 INFO L137 encePairwiseOnDemand]: 363/395 looper letters, 0 selfloop transitions, 0 changer transitions 3341/3341 dead transitions. [2022-09-16 11:55:36,388 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1614 places, 3341 transitions, 34240 flow [2022-09-16 11:55:36,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 614 states. [2022-09-16 11:55:36,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 614 states. [2022-09-16 11:55:36,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 162737 transitions. [2022-09-16 11:55:36,469 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6709974023832104 [2022-09-16 11:55:36,469 INFO L72 ComplementDD]: Start complementDD. Operand 614 states and 162737 transitions. [2022-09-16 11:55:36,469 INFO L73 IsDeterministic]: Start isDeterministic. Operand 614 states and 162737 transitions. [2022-09-16 11:55:36,505 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:55:36,505 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 614 states and 162737 transitions. [2022-09-16 11:55:36,644 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 615 states, 614 states have (on average 265.04397394136805) internal successors, (162737), 614 states have internal predecessors, (162737), 0 states have call successors, (0), 0 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 11:55:36,793 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 615 states, 615 states have (on average 395.0) internal successors, (242925), 615 states have internal predecessors, (242925), 0 states have call successors, (0), 0 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 11:55:36,850 INFO L81 ComplementDD]: Finished complementDD. Result has 615 states, 615 states have (on average 395.0) internal successors, (242925), 615 states have internal predecessors, (242925), 0 states have call successors, (0), 0 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 11:55:36,850 INFO L175 Difference]: Start difference. First operand has 1002 places, 1621 transitions, 18390 flow. Second operand 614 states and 162737 transitions. [2022-09-16 11:55:36,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1614 places, 3341 transitions, 34240 flow [2022-09-16 11:55:37,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1435 places, 3341 transitions, 32709 flow, removed 3 selfloop flow, removed 179 redundant places. [2022-09-16 11:55:37,038 INFO L231 Difference]: Finished difference. Result has 1435 places, 0 transitions, 0 flow [2022-09-16 11:55:37,039 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=395, PETRI_DIFFERENCE_MINUEND_FLOW=16713, PETRI_DIFFERENCE_MINUEND_PLACES=822, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1620, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1620, PETRI_DIFFERENCE_SUBTRAHEND_STATES=614, PETRI_FLOW=0, PETRI_PLACES=1435, PETRI_TRANSITIONS=0} [2022-09-16 11:55:37,040 INFO L287 CegarLoopForPetriNet]: 345 programPoint places, 1090 predicate places. [2022-09-16 11:55:37,040 INFO L495 AbstractCegarLoop]: Abstraction has has 1435 places, 0 transitions, 0 flow [2022-09-16 11:55:37,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 158 states, 158 states have (on average 263.6645569620253) internal successors, (41659), 158 states have internal predecessors, (41659), 0 states have call successors, (0), 0 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 11:55:37,047 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (59 of 60 remaining) [2022-09-16 11:55:37,047 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (58 of 60 remaining) [2022-09-16 11:55:37,047 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (57 of 60 remaining) [2022-09-16 11:55:37,047 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (56 of 60 remaining) [2022-09-16 11:55:37,047 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (55 of 60 remaining) [2022-09-16 11:55:37,047 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (54 of 60 remaining) [2022-09-16 11:55:37,047 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (53 of 60 remaining) [2022-09-16 11:55:37,048 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (52 of 60 remaining) [2022-09-16 11:55:37,048 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (51 of 60 remaining) [2022-09-16 11:55:37,048 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (50 of 60 remaining) [2022-09-16 11:55:37,048 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (49 of 60 remaining) [2022-09-16 11:55:37,048 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (48 of 60 remaining) [2022-09-16 11:55:37,048 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (47 of 60 remaining) [2022-09-16 11:55:37,048 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (46 of 60 remaining) [2022-09-16 11:55:37,048 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (45 of 60 remaining) [2022-09-16 11:55:37,048 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (44 of 60 remaining) [2022-09-16 11:55:37,048 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (43 of 60 remaining) [2022-09-16 11:55:37,048 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (42 of 60 remaining) [2022-09-16 11:55:37,048 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (41 of 60 remaining) [2022-09-16 11:55:37,049 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (40 of 60 remaining) [2022-09-16 11:55:37,049 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (39 of 60 remaining) [2022-09-16 11:55:37,049 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 60 remaining) [2022-09-16 11:55:37,049 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 60 remaining) [2022-09-16 11:55:37,049 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 60 remaining) [2022-09-16 11:55:37,049 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 60 remaining) [2022-09-16 11:55:37,049 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 60 remaining) [2022-09-16 11:55:37,049 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 60 remaining) [2022-09-16 11:55:37,049 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 60 remaining) [2022-09-16 11:55:37,049 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (31 of 60 remaining) [2022-09-16 11:55:37,049 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (30 of 60 remaining) [2022-09-16 11:55:37,049 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (29 of 60 remaining) [2022-09-16 11:55:37,050 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (28 of 60 remaining) [2022-09-16 11:55:37,050 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 60 remaining) [2022-09-16 11:55:37,050 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 60 remaining) [2022-09-16 11:55:37,050 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 60 remaining) [2022-09-16 11:55:37,050 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread4Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 60 remaining) [2022-09-16 11:55:37,050 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 60 remaining) [2022-09-16 11:55:37,050 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 60 remaining) [2022-09-16 11:55:37,050 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 60 remaining) [2022-09-16 11:55:37,050 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 60 remaining) [2022-09-16 11:55:37,050 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 60 remaining) [2022-09-16 11:55:37,050 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 60 remaining) [2022-09-16 11:55:37,050 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 60 remaining) [2022-09-16 11:55:37,050 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 60 remaining) [2022-09-16 11:55:37,051 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 60 remaining) [2022-09-16 11:55:37,051 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 60 remaining) [2022-09-16 11:55:37,051 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 60 remaining) [2022-09-16 11:55:37,051 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 60 remaining) [2022-09-16 11:55:37,051 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 60 remaining) [2022-09-16 11:55:37,051 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 60 remaining) [2022-09-16 11:55:37,051 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 60 remaining) [2022-09-16 11:55:37,051 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 60 remaining) [2022-09-16 11:55:37,051 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 60 remaining) [2022-09-16 11:55:37,051 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 60 remaining) [2022-09-16 11:55:37,051 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 60 remaining) [2022-09-16 11:55:37,052 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 60 remaining) [2022-09-16 11:55:37,052 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 60 remaining) [2022-09-16 11:55:37,052 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 60 remaining) [2022-09-16 11:55:37,052 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 60 remaining) [2022-09-16 11:55:37,052 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread4Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 60 remaining) [2022-09-16 11:55:37,077 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-09-16 11:55:37,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-09-16 11:55:37,278 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:55:37,285 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-09-16 11:55:37,285 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-09-16 11:55:37,290 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 11:55:37 BasicIcfg [2022-09-16 11:55:37,290 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-09-16 11:55:37,291 INFO L158 Benchmark]: Toolchain (without parser) took 186224.84ms. Allocated memory was 185.6MB in the beginning and 7.7GB in the end (delta: 7.5GB). Free memory was 132.2MB in the beginning and 4.5GB in the end (delta: -4.4GB). Peak memory consumption was 3.1GB. Max. memory is 8.0GB. [2022-09-16 11:55:37,291 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 185.6MB. Free memory is still 149.0MB. There was no memory consumed. Max. memory is 8.0GB. [2022-09-16 11:55:37,291 INFO L158 Benchmark]: CACSL2BoogieTranslator took 263.07ms. Allocated memory is still 185.6MB. Free memory was 132.1MB in the beginning and 160.1MB in the end (delta: -28.0MB). Peak memory consumption was 12.2MB. Max. memory is 8.0GB. [2022-09-16 11:55:37,292 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.03ms. Allocated memory is still 185.6MB. Free memory was 160.1MB in the beginning and 156.7MB in the end (delta: 3.4MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-09-16 11:55:37,292 INFO L158 Benchmark]: Boogie Preprocessor took 34.86ms. Allocated memory is still 185.6MB. Free memory was 156.7MB in the beginning and 154.3MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-09-16 11:55:37,292 INFO L158 Benchmark]: RCFGBuilder took 1011.46ms. Allocated memory is still 185.6MB. Free memory was 154.3MB in the beginning and 140.6MB in the end (delta: 13.6MB). Peak memory consumption was 62.7MB. Max. memory is 8.0GB. [2022-09-16 11:55:37,292 INFO L158 Benchmark]: TraceAbstraction took 184851.16ms. Allocated memory was 185.6MB in the beginning and 7.7GB in the end (delta: 7.5GB). Free memory was 139.6MB in the beginning and 4.5GB in the end (delta: -4.4GB). Peak memory consumption was 3.2GB. Max. memory is 8.0GB. [2022-09-16 11:55:37,293 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 185.6MB. Free memory is still 149.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 263.07ms. Allocated memory is still 185.6MB. Free memory was 132.1MB in the beginning and 160.1MB in the end (delta: -28.0MB). Peak memory consumption was 12.2MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 59.03ms. Allocated memory is still 185.6MB. Free memory was 160.1MB in the beginning and 156.7MB in the end (delta: 3.4MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 34.86ms. Allocated memory is still 185.6MB. Free memory was 156.7MB in the beginning and 154.3MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 1011.46ms. Allocated memory is still 185.6MB. Free memory was 154.3MB in the beginning and 140.6MB in the end (delta: 13.6MB). Peak memory consumption was 62.7MB. Max. memory is 8.0GB. * TraceAbstraction took 184851.16ms. Allocated memory was 185.6MB in the beginning and 7.7GB in the end (delta: 7.5GB). Free memory was 139.6MB in the beginning and 4.5GB in the end (delta: -4.4GB). Peak memory consumption was 3.2GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 57]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 57]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 64]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 64]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 71]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 71]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 78]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 78]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 85]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 85]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 92]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 92]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 114]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 114]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 129]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 129]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 136]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 136]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 216]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 216]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 216]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 216]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 216]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 216]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 216]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 216]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 151]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 151]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 158]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 158]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 435 locations, 60 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: 184.7s, OverallIterations: 21, TraceHistogramMax: 75, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 159.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 39308 SdHoareTripleChecker+Valid, 11.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 39308 mSDsluCounter, 3269 SdHoareTripleChecker+Invalid, 9.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4679 mSDsCounter, 10928 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 16190 IncrementalHoareTripleChecker+Invalid, 27118 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10928 mSolverCounterUnsat, 410 mSDtfsCounter, 16190 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 7812 GetRequests, 5856 SyntacticMatches, 20 SemanticMatches, 1936 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 316853 ImplicationChecksByTransitivity, 70.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18390occurred in iteration=20, InterpolantAutomatonStates: 1547, 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: 0.4s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 19.7s InterpolantComputationTime, 8287 NumberOfCodeBlocks, 7153 NumberOfCodeBlocksAsserted, 32 NumberOfCheckSat, 10912 ConstructedInterpolants, 0 QuantifiedInterpolants, 25100 SizeOfPredicates, 151 NumberOfNonLiveVariables, 4480 ConjunctsInSsa, 173 ConjunctsInUnsatCore, 40 InterpolantComputations, 13 PerfectInterpolantSequences, 60788/114761 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 32 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-09-16 11:55:37,327 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...