/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-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.error.function.in.sv-comp.mode false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/pthread/stack-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-53ca081-m [2022-09-16 10:16:29,319 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-16 10:16:29,320 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-16 10:16:29,361 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-16 10:16:29,362 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-16 10:16:29,365 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-16 10:16:29,368 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-16 10:16:29,373 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-16 10:16:29,375 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-16 10:16:29,379 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-16 10:16:29,380 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-16 10:16:29,381 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-16 10:16:29,381 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-16 10:16:29,383 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-16 10:16:29,384 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-16 10:16:29,386 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-16 10:16:29,387 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-16 10:16:29,388 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-16 10:16:29,390 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-16 10:16:29,395 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-16 10:16:29,396 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-16 10:16:29,397 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-16 10:16:29,399 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-16 10:16:29,399 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-16 10:16:29,402 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-16 10:16:29,402 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-16 10:16:29,403 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-16 10:16:29,404 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-16 10:16:29,404 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-16 10:16:29,405 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-16 10:16:29,405 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-16 10:16:29,406 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-16 10:16:29,407 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-16 10:16:29,408 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-16 10:16:29,409 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-16 10:16:29,409 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-16 10:16:29,409 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-16 10:16:29,410 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-16 10:16:29,410 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-16 10:16:29,410 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-16 10:16:29,411 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-16 10:16:29,412 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-FA-NoLbe.epf [2022-09-16 10:16:29,443 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-16 10:16:29,444 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-16 10:16:29,444 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-09-16 10:16:29,444 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-09-16 10:16:29,445 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-16 10:16:29,445 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-16 10:16:29,445 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-16 10:16:29,446 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-16 10:16:29,446 INFO L138 SettingsManager]: * Use SBE=true [2022-09-16 10:16:29,446 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-16 10:16:29,447 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-16 10:16:29,447 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-16 10:16:29,447 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-16 10:16:29,447 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-16 10:16:29,447 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-16 10:16:29,447 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-16 10:16:29,447 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-16 10:16:29,447 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-16 10:16:29,447 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-16 10:16:29,448 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-16 10:16:29,448 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-16 10:16:29,448 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-16 10:16:29,448 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-16 10:16:29,448 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-16 10:16:29,448 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-16 10:16:29,448 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 10:16:29,448 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-16 10:16:29,449 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-16 10:16:29,450 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-16 10:16:29,450 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-16 10:16:29,450 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-16 10:16:29,450 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-16 10:16:29,450 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-09-16 10:16:29,450 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of error function in SV-COMP mode -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2022-09-16 10:16:29,672 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-16 10:16:29,707 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-16 10:16:29,709 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-16 10:16:29,710 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-16 10:16:29,710 INFO L275 PluginConnector]: CDTParser initialized [2022-09-16 10:16:29,711 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stack-2.i [2022-09-16 10:16:29,768 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb78fc428/c9154473b10d41219d0fef7742b15b83/FLAG87d0ec870 [2022-09-16 10:16:30,178 INFO L306 CDTParser]: Found 1 translation units. [2022-09-16 10:16:30,179 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack-2.i [2022-09-16 10:16:30,192 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb78fc428/c9154473b10d41219d0fef7742b15b83/FLAG87d0ec870 [2022-09-16 10:16:30,513 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb78fc428/c9154473b10d41219d0fef7742b15b83 [2022-09-16 10:16:30,515 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-16 10:16:30,516 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-16 10:16:30,517 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-16 10:16:30,518 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-16 10:16:30,522 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-16 10:16:30,522 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 10:16:30" (1/1) ... [2022-09-16 10:16:30,523 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2560e48f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 10:16:30, skipping insertion in model container [2022-09-16 10:16:30,523 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 10:16:30" (1/1) ... [2022-09-16 10:16:30,530 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-16 10:16:30,569 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-16 10:16:31,008 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack-2.i[41520,41533] [2022-09-16 10:16:31,037 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 10:16:31,047 INFO L203 MainTranslator]: Completed pre-run [2022-09-16 10:16:31,096 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack-2.i[41520,41533] [2022-09-16 10:16:31,110 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 10:16:31,169 INFO L208 MainTranslator]: Completed translation [2022-09-16 10:16:31,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 10:16:31 WrapperNode [2022-09-16 10:16:31,170 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-16 10:16:31,171 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-16 10:16:31,171 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-16 10:16:31,171 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-16 10:16:31,177 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 10:16:31" (1/1) ... [2022-09-16 10:16:31,206 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 10:16:31" (1/1) ... [2022-09-16 10:16:31,239 INFO L138 Inliner]: procedures = 277, calls = 46, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 169 [2022-09-16 10:16:31,240 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-16 10:16:31,241 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-16 10:16:31,241 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-16 10:16:31,241 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-16 10:16:31,253 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 10:16:31" (1/1) ... [2022-09-16 10:16:31,254 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 10:16:31" (1/1) ... [2022-09-16 10:16:31,264 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 10:16:31" (1/1) ... [2022-09-16 10:16:31,264 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 10:16:31" (1/1) ... [2022-09-16 10:16:31,270 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 10:16:31" (1/1) ... [2022-09-16 10:16:31,272 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 10:16:31" (1/1) ... [2022-09-16 10:16:31,274 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 10:16:31" (1/1) ... [2022-09-16 10:16:31,287 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-16 10:16:31,288 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-16 10:16:31,288 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-16 10:16:31,288 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-16 10:16:31,291 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 10:16:31" (1/1) ... [2022-09-16 10:16:31,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 10:16:31,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 10:16:31,328 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 10:16:31,343 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 10:16:31,368 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-09-16 10:16:31,369 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-09-16 10:16:31,369 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-09-16 10:16:31,369 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-09-16 10:16:31,369 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-16 10:16:31,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-16 10:16:31,369 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-16 10:16:31,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-16 10:16:31,369 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-09-16 10:16:31,369 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-16 10:16:31,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-16 10:16:31,370 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-16 10:16:31,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-16 10:16:31,371 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 10:16:31,541 INFO L234 CfgBuilder]: Building ICFG [2022-09-16 10:16:31,542 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-16 10:16:31,808 INFO L275 CfgBuilder]: Performing block encoding [2022-09-16 10:16:31,817 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-16 10:16:31,817 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-09-16 10:16:31,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 10:16:31 BoogieIcfgContainer [2022-09-16 10:16:31,819 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-16 10:16:31,821 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-16 10:16:31,821 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-16 10:16:31,824 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-16 10:16:31,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 10:16:30" (1/3) ... [2022-09-16 10:16:31,825 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16000cf8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 10:16:31, skipping insertion in model container [2022-09-16 10:16:31,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 10:16:31" (2/3) ... [2022-09-16 10:16:31,825 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16000cf8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 10:16:31, skipping insertion in model container [2022-09-16 10:16:31,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 10:16:31" (3/3) ... [2022-09-16 10:16:31,827 INFO L112 eAbstractionObserver]: Analyzing ICFG stack-2.i [2022-09-16 10:16:31,834 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-09-16 10:16:31,842 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-16 10:16:31,842 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-09-16 10:16:31,843 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-16 10:16:31,941 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-09-16 10:16:31,969 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 196 places, 199 transitions, 414 flow [2022-09-16 10:16:32,556 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 17476 states, 17452 states have (on average 2.8448888379555353) internal successors, (49649), 17475 states have internal predecessors, (49649), 0 states have call successors, (0), 0 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 10:16:32,581 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 10:16:32,587 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=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, 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;@60fe451b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 10:16:32,588 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2022-09-16 10:16:32,703 INFO L276 IsEmpty]: Start isEmpty. Operand has 17476 states, 17452 states have (on average 2.8448888379555353) internal successors, (49649), 17475 states have internal predecessors, (49649), 0 states have call successors, (0), 0 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 10:16:32,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-09-16 10:16:32,720 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 10:16:32,721 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 10:16:32,722 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-09-16 10:16:32,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 10:16:32,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1396840529, now seen corresponding path program 1 times [2022-09-16 10:16:32,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 10:16:32,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379666376] [2022-09-16 10:16:32,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 10:16:32,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 10:16:32,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 10:16:33,002 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 10:16:33,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 10:16:33,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379666376] [2022-09-16 10:16:33,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379666376] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 10:16:33,004 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 10:16:33,005 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 10:16:33,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772447651] [2022-09-16 10:16:33,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 10:16:33,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 10:16:33,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 10:16:33,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 10:16:33,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 10:16:33,082 INFO L87 Difference]: Start difference. First operand has 17476 states, 17452 states have (on average 2.8448888379555353) internal successors, (49649), 17475 states have internal predecessors, (49649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 17.666666666666668) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 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 10:16:33,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 10:16:33,687 INFO L93 Difference]: Finished difference Result 30420 states and 84554 transitions. [2022-09-16 10:16:33,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 10:16:33,689 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 17.666666666666668) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2022-09-16 10:16:33,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 10:16:33,919 INFO L225 Difference]: With dead ends: 30420 [2022-09-16 10:16:33,919 INFO L226 Difference]: Without dead ends: 30186 [2022-09-16 10:16:33,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-09-16 10:16:33,928 INFO L413 NwaCegarLoop]: 310 mSDtfsCounter, 264 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 786 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-09-16 10:16:33,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [264 Valid, 786 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-09-16 10:16:34,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30186 states. [2022-09-16 10:16:34,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30186 to 28466. [2022-09-16 10:16:35,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28466 states, 28430 states have (on average 2.8111501934576153) internal successors, (79921), 28465 states have internal predecessors, (79921), 0 states have call successors, (0), 0 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 10:16:35,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28466 states to 28466 states and 79921 transitions. [2022-09-16 10:16:35,323 INFO L78 Accepts]: Start accepts. Automaton has 28466 states and 79921 transitions. Word has length 53 [2022-09-16 10:16:35,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 10:16:35,326 INFO L495 AbstractCegarLoop]: Abstraction has 28466 states and 79921 transitions. [2022-09-16 10:16:35,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 17.666666666666668) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 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 10:16:35,326 INFO L276 IsEmpty]: Start isEmpty. Operand 28466 states and 79921 transitions. [2022-09-16 10:16:35,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-09-16 10:16:35,338 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 10:16:35,338 INFO L195 NwaCegarLoop]: 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] [2022-09-16 10:16:35,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-16 10:16:35,339 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-09-16 10:16:35,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 10:16:35,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1438698054, now seen corresponding path program 1 times [2022-09-16 10:16:35,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 10:16:35,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396275415] [2022-09-16 10:16:35,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 10:16:35,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 10:16:35,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 10:16:35,488 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 10:16:35,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 10:16:35,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396275415] [2022-09-16 10:16:35,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396275415] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 10:16:35,489 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 10:16:35,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 10:16:35,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069106717] [2022-09-16 10:16:35,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 10:16:35,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 10:16:35,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 10:16:35,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 10:16:35,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 10:16:35,492 INFO L87 Difference]: Start difference. First operand 28466 states and 79921 transitions. Second operand has 4 states, 3 states have (on average 21.0) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 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 10:16:35,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 10:16:35,866 INFO L93 Difference]: Finished difference Result 28207 states and 79207 transitions. [2022-09-16 10:16:35,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 10:16:35,868 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 21.0) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-09-16 10:16:35,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 10:16:35,993 INFO L225 Difference]: With dead ends: 28207 [2022-09-16 10:16:35,993 INFO L226 Difference]: Without dead ends: 28207 [2022-09-16 10:16:35,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-09-16 10:16:35,997 INFO L413 NwaCegarLoop]: 308 mSDtfsCounter, 266 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 730 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-09-16 10:16:35,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 730 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-09-16 10:16:36,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28207 states. [2022-09-16 10:16:36,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28207 to 28207. [2022-09-16 10:16:36,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28207 states, 28178 states have (on average 2.8109518063737666) internal successors, (79207), 28206 states have internal predecessors, (79207), 0 states have call successors, (0), 0 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 10:16:37,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28207 states to 28207 states and 79207 transitions. [2022-09-16 10:16:37,039 INFO L78 Accepts]: Start accepts. Automaton has 28207 states and 79207 transitions. Word has length 63 [2022-09-16 10:16:37,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 10:16:37,041 INFO L495 AbstractCegarLoop]: Abstraction has 28207 states and 79207 transitions. [2022-09-16 10:16:37,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 21.0) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 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 10:16:37,047 INFO L276 IsEmpty]: Start isEmpty. Operand 28207 states and 79207 transitions. [2022-09-16 10:16:37,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-09-16 10:16:37,054 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 10:16:37,054 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 10:16:37,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-16 10:16:37,054 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-09-16 10:16:37,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 10:16:37,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1649967282, now seen corresponding path program 1 times [2022-09-16 10:16:37,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 10:16:37,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565911089] [2022-09-16 10:16:37,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 10:16:37,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 10:16:37,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 10:16:37,162 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 10:16:37,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 10:16:37,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565911089] [2022-09-16 10:16:37,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565911089] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 10:16:37,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2093113329] [2022-09-16 10:16:37,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 10:16:37,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 10:16:37,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 10:16:37,165 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 10:16:37,166 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 10:16:37,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 10:16:37,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 10:16:37,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 10:16:37,350 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 10:16:37,350 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 10:16:37,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2093113329] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 10:16:37,351 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 10:16:37,351 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 10:16:37,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006403312] [2022-09-16 10:16:37,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 10:16:37,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 10:16:37,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 10:16:37,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 10:16:37,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 10:16:37,352 INFO L87 Difference]: Start difference. First operand 28207 states and 79207 transitions. Second operand has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 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 10:16:37,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 10:16:37,667 INFO L93 Difference]: Finished difference Result 29668 states and 82496 transitions. [2022-09-16 10:16:37,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 10:16:37,668 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-09-16 10:16:37,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 10:16:37,772 INFO L225 Difference]: With dead ends: 29668 [2022-09-16 10:16:37,772 INFO L226 Difference]: Without dead ends: 29668 [2022-09-16 10:16:37,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-09-16 10:16:37,774 INFO L413 NwaCegarLoop]: 498 mSDtfsCounter, 458 mSDsluCounter, 1211 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 458 SdHoareTripleChecker+Valid, 1694 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-09-16 10:16:37,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [458 Valid, 1694 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-09-16 10:16:37,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29668 states. [2022-09-16 10:16:38,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29668 to 16003. [2022-09-16 10:16:38,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16003 states, 15981 states have (on average 2.7729178399349226) internal successors, (44314), 16002 states have internal predecessors, (44314), 0 states have call successors, (0), 0 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 10:16:38,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16003 states to 16003 states and 44314 transitions. [2022-09-16 10:16:38,350 INFO L78 Accepts]: Start accepts. Automaton has 16003 states and 44314 transitions. Word has length 64 [2022-09-16 10:16:38,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 10:16:38,350 INFO L495 AbstractCegarLoop]: Abstraction has 16003 states and 44314 transitions. [2022-09-16 10:16:38,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 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 10:16:38,351 INFO L276 IsEmpty]: Start isEmpty. Operand 16003 states and 44314 transitions. [2022-09-16 10:16:38,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-09-16 10:16:38,357 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 10:16:38,357 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 10:16:38,381 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 10:16:38,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 10:16:38,572 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-09-16 10:16:38,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 10:16:38,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1901729374, now seen corresponding path program 1 times [2022-09-16 10:16:38,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 10:16:38,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199321714] [2022-09-16 10:16:38,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 10:16:38,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 10:16:38,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 10:16:38,647 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 10:16:38,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 10:16:38,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199321714] [2022-09-16 10:16:38,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199321714] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 10:16:38,648 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 10:16:38,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 10:16:38,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780799252] [2022-09-16 10:16:38,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 10:16:38,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-16 10:16:38,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 10:16:38,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-16 10:16:38,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-09-16 10:16:38,649 INFO L87 Difference]: Start difference. First operand 16003 states and 44314 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 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 10:16:38,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 10:16:38,972 INFO L93 Difference]: Finished difference Result 33644 states and 93179 transitions. [2022-09-16 10:16:38,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-09-16 10:16:38,973 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-09-16 10:16:38,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 10:16:39,065 INFO L225 Difference]: With dead ends: 33644 [2022-09-16 10:16:39,065 INFO L226 Difference]: Without dead ends: 32670 [2022-09-16 10:16:39,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-09-16 10:16:39,067 INFO L413 NwaCegarLoop]: 321 mSDtfsCounter, 441 mSDsluCounter, 778 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 441 SdHoareTripleChecker+Valid, 1089 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-09-16 10:16:39,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [441 Valid, 1089 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-09-16 10:16:39,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32670 states. [2022-09-16 10:16:39,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32670 to 21899. [2022-09-16 10:16:39,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21899 states, 21877 states have (on average 2.771403757370755) internal successors, (60630), 21898 states have internal predecessors, (60630), 0 states have call successors, (0), 0 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 10:16:39,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21899 states to 21899 states and 60630 transitions. [2022-09-16 10:16:39,712 INFO L78 Accepts]: Start accepts. Automaton has 21899 states and 60630 transitions. Word has length 67 [2022-09-16 10:16:39,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 10:16:39,712 INFO L495 AbstractCegarLoop]: Abstraction has 21899 states and 60630 transitions. [2022-09-16 10:16:39,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 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 10:16:39,712 INFO L276 IsEmpty]: Start isEmpty. Operand 21899 states and 60630 transitions. [2022-09-16 10:16:39,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-09-16 10:16:39,717 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 10:16:39,718 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 10:16:39,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-09-16 10:16:39,718 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-09-16 10:16:39,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 10:16:39,719 INFO L85 PathProgramCache]: Analyzing trace with hash -23226816, now seen corresponding path program 1 times [2022-09-16 10:16:39,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 10:16:39,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703310858] [2022-09-16 10:16:39,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 10:16:39,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 10:16:39,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 10:16:39,778 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 10:16:39,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 10:16:39,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703310858] [2022-09-16 10:16:39,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703310858] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 10:16:39,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 10:16:39,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 10:16:39,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035554348] [2022-09-16 10:16:39,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 10:16:39,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 10:16:39,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 10:16:39,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 10:16:39,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 10:16:39,781 INFO L87 Difference]: Start difference. First operand 21899 states and 60630 transitions. Second operand has 4 states, 3 states have (on average 23.666666666666668) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 10:16:40,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 10:16:40,050 INFO L93 Difference]: Finished difference Result 22217 states and 61381 transitions. [2022-09-16 10:16:40,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 10:16:40,051 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 23.666666666666668) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-09-16 10:16:40,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 10:16:40,092 INFO L225 Difference]: With dead ends: 22217 [2022-09-16 10:16:40,092 INFO L226 Difference]: Without dead ends: 22217 [2022-09-16 10:16:40,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-09-16 10:16:40,093 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 174 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-09-16 10:16:40,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 509 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-09-16 10:16:40,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22217 states. [2022-09-16 10:16:40,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22217 to 21927. [2022-09-16 10:16:40,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21927 states, 21905 states have (on average 2.76594384843643) internal successors, (60588), 21926 states have internal predecessors, (60588), 0 states have call successors, (0), 0 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 10:16:40,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21927 states to 21927 states and 60588 transitions. [2022-09-16 10:16:40,578 INFO L78 Accepts]: Start accepts. Automaton has 21927 states and 60588 transitions. Word has length 71 [2022-09-16 10:16:40,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 10:16:40,579 INFO L495 AbstractCegarLoop]: Abstraction has 21927 states and 60588 transitions. [2022-09-16 10:16:40,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 23.666666666666668) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 10:16:40,579 INFO L276 IsEmpty]: Start isEmpty. Operand 21927 states and 60588 transitions. [2022-09-16 10:16:40,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-09-16 10:16:40,590 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 10:16:40,590 INFO L195 NwaCegarLoop]: 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] [2022-09-16 10:16:40,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-16 10:16:40,591 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-09-16 10:16:40,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 10:16:40,591 INFO L85 PathProgramCache]: Analyzing trace with hash 710642219, now seen corresponding path program 1 times [2022-09-16 10:16:40,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 10:16:40,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783092653] [2022-09-16 10:16:40,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 10:16:40,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 10:16:40,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 10:16:40,653 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 10:16:40,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 10:16:40,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783092653] [2022-09-16 10:16:40,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783092653] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 10:16:40,654 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 10:16:40,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 10:16:40,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225878138] [2022-09-16 10:16:40,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 10:16:40,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 10:16:40,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 10:16:40,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 10:16:40,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 10:16:40,656 INFO L87 Difference]: Start difference. First operand 21927 states and 60588 transitions. Second operand has 4 states, 3 states have (on average 28.333333333333332) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 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 10:16:40,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 10:16:40,961 INFO L93 Difference]: Finished difference Result 26655 states and 73649 transitions. [2022-09-16 10:16:40,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 10:16:40,962 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 28.333333333333332) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-09-16 10:16:40,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 10:16:41,019 INFO L225 Difference]: With dead ends: 26655 [2022-09-16 10:16:41,019 INFO L226 Difference]: Without dead ends: 26655 [2022-09-16 10:16:41,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-09-16 10:16:41,020 INFO L413 NwaCegarLoop]: 286 mSDtfsCounter, 221 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 714 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-09-16 10:16:41,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 714 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-09-16 10:16:41,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26655 states. [2022-09-16 10:16:41,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26655 to 25409. [2022-09-16 10:16:41,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25409 states, 25387 states have (on average 2.7747666128333397) internal successors, (70443), 25408 states have internal predecessors, (70443), 0 states have call successors, (0), 0 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 10:16:41,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25409 states to 25409 states and 70443 transitions. [2022-09-16 10:16:41,646 INFO L78 Accepts]: Start accepts. Automaton has 25409 states and 70443 transitions. Word has length 85 [2022-09-16 10:16:41,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 10:16:41,646 INFO L495 AbstractCegarLoop]: Abstraction has 25409 states and 70443 transitions. [2022-09-16 10:16:41,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 28.333333333333332) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 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 10:16:41,647 INFO L276 IsEmpty]: Start isEmpty. Operand 25409 states and 70443 transitions. [2022-09-16 10:16:41,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-09-16 10:16:41,668 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 10:16:41,669 INFO L195 NwaCegarLoop]: 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] [2022-09-16 10:16:41,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-09-16 10:16:41,669 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-09-16 10:16:41,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 10:16:41,670 INFO L85 PathProgramCache]: Analyzing trace with hash 884814891, now seen corresponding path program 1 times [2022-09-16 10:16:41,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 10:16:41,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895293797] [2022-09-16 10:16:41,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 10:16:41,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 10:16:41,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 10:16:41,756 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 10:16:41,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 10:16:41,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895293797] [2022-09-16 10:16:41,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895293797] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 10:16:41,757 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 10:16:41,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 10:16:41,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083193422] [2022-09-16 10:16:41,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 10:16:41,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 10:16:41,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 10:16:41,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 10:16:41,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 10:16:41,759 INFO L87 Difference]: Start difference. First operand 25409 states and 70443 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 10:16:41,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 10:16:41,819 INFO L93 Difference]: Finished difference Result 10253 states and 27149 transitions. [2022-09-16 10:16:41,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 10:16:41,820 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2022-09-16 10:16:41,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 10:16:41,836 INFO L225 Difference]: With dead ends: 10253 [2022-09-16 10:16:41,836 INFO L226 Difference]: Without dead ends: 9913 [2022-09-16 10:16:41,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 10:16:41,837 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 110 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-09-16 10:16:41,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 274 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-09-16 10:16:41,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9913 states. [2022-09-16 10:16:42,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9913 to 9913. [2022-09-16 10:16:42,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9913 states, 9897 states have (on average 2.6474689299787815) internal successors, (26202), 9912 states have internal predecessors, (26202), 0 states have call successors, (0), 0 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 10:16:42,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9913 states to 9913 states and 26202 transitions. [2022-09-16 10:16:42,102 INFO L78 Accepts]: Start accepts. Automaton has 9913 states and 26202 transitions. Word has length 103 [2022-09-16 10:16:42,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 10:16:42,103 INFO L495 AbstractCegarLoop]: Abstraction has 9913 states and 26202 transitions. [2022-09-16 10:16:42,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 10:16:42,103 INFO L276 IsEmpty]: Start isEmpty. Operand 9913 states and 26202 transitions. [2022-09-16 10:16:42,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-09-16 10:16:42,113 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 10:16:42,114 INFO L195 NwaCegarLoop]: 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] [2022-09-16 10:16:42,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-09-16 10:16:42,114 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-09-16 10:16:42,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 10:16:42,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1063606920, now seen corresponding path program 1 times [2022-09-16 10:16:42,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 10:16:42,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895103541] [2022-09-16 10:16:42,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 10:16:42,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 10:16:42,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 10:16:42,198 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 10:16:42,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 10:16:42,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895103541] [2022-09-16 10:16:42,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895103541] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 10:16:42,199 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 10:16:42,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 10:16:42,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043267847] [2022-09-16 10:16:42,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 10:16:42,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 10:16:42,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 10:16:42,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 10:16:42,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-09-16 10:16:42,201 INFO L87 Difference]: Start difference. First operand 9913 states and 26202 transitions. Second operand has 6 states, 5 states have (on average 22.6) internal successors, (113), 6 states have internal predecessors, (113), 0 states have call successors, (0), 0 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 10:16:42,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 10:16:42,340 INFO L93 Difference]: Finished difference Result 13634 states and 35906 transitions. [2022-09-16 10:16:42,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-09-16 10:16:42,341 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 22.6) internal successors, (113), 6 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2022-09-16 10:16:42,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 10:16:42,371 INFO L225 Difference]: With dead ends: 13634 [2022-09-16 10:16:42,371 INFO L226 Difference]: Without dead ends: 13634 [2022-09-16 10:16:42,372 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-09-16 10:16:42,376 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 297 mSDsluCounter, 641 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 822 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-09-16 10:16:42,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 822 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-09-16 10:16:42,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13634 states. [2022-09-16 10:16:42,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13634 to 12611. [2022-09-16 10:16:42,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12611 states, 12595 states have (on average 2.6412068281063914) internal successors, (33266), 12610 states have internal predecessors, (33266), 0 states have call successors, (0), 0 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 10:16:42,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12611 states to 12611 states and 33266 transitions. [2022-09-16 10:16:42,740 INFO L78 Accepts]: Start accepts. Automaton has 12611 states and 33266 transitions. Word has length 113 [2022-09-16 10:16:42,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 10:16:42,740 INFO L495 AbstractCegarLoop]: Abstraction has 12611 states and 33266 transitions. [2022-09-16 10:16:42,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 22.6) internal successors, (113), 6 states have internal predecessors, (113), 0 states have call successors, (0), 0 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 10:16:42,740 INFO L276 IsEmpty]: Start isEmpty. Operand 12611 states and 33266 transitions. [2022-09-16 10:16:42,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-09-16 10:16:42,751 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 10:16:42,751 INFO L195 NwaCegarLoop]: 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] [2022-09-16 10:16:42,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-09-16 10:16:42,752 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-09-16 10:16:42,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 10:16:42,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1387923255, now seen corresponding path program 1 times [2022-09-16 10:16:42,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 10:16:42,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959177308] [2022-09-16 10:16:42,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 10:16:42,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 10:16:42,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 10:16:42,843 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 10:16:42,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 10:16:42,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959177308] [2022-09-16 10:16:42,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959177308] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 10:16:42,846 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 10:16:42,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 10:16:42,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484065009] [2022-09-16 10:16:42,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 10:16:42,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 10:16:42,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 10:16:42,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 10:16:42,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-16 10:16:42,847 INFO L87 Difference]: Start difference. First operand 12611 states and 33266 transitions. Second operand has 6 states, 5 states have (on average 22.8) internal successors, (114), 6 states have internal predecessors, (114), 0 states have call successors, (0), 0 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 10:16:43,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 10:16:43,021 INFO L93 Difference]: Finished difference Result 19805 states and 52410 transitions. [2022-09-16 10:16:43,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-09-16 10:16:43,022 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 22.8) internal successors, (114), 6 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2022-09-16 10:16:43,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 10:16:43,069 INFO L225 Difference]: With dead ends: 19805 [2022-09-16 10:16:43,070 INFO L226 Difference]: Without dead ends: 19805 [2022-09-16 10:16:43,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-09-16 10:16:43,072 INFO L413 NwaCegarLoop]: 274 mSDtfsCounter, 222 mSDsluCounter, 843 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 1104 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-09-16 10:16:43,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 1104 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-09-16 10:16:43,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19805 states. [2022-09-16 10:16:43,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19805 to 16606. [2022-09-16 10:16:43,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16606 states, 16590 states have (on average 2.6578059071729956) internal successors, (44093), 16605 states have internal predecessors, (44093), 0 states have call successors, (0), 0 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 10:16:43,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16606 states to 16606 states and 44093 transitions. [2022-09-16 10:16:43,475 INFO L78 Accepts]: Start accepts. Automaton has 16606 states and 44093 transitions. Word has length 114 [2022-09-16 10:16:43,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 10:16:43,476 INFO L495 AbstractCegarLoop]: Abstraction has 16606 states and 44093 transitions. [2022-09-16 10:16:43,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 22.8) internal successors, (114), 6 states have internal predecessors, (114), 0 states have call successors, (0), 0 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 10:16:43,476 INFO L276 IsEmpty]: Start isEmpty. Operand 16606 states and 44093 transitions. [2022-09-16 10:16:43,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-09-16 10:16:43,489 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 10:16:43,490 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 10:16:43,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-09-16 10:16:43,491 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-09-16 10:16:43,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 10:16:43,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1972740275, now seen corresponding path program 1 times [2022-09-16 10:16:43,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 10:16:43,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260868085] [2022-09-16 10:16:43,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 10:16:43,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 10:16:43,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 10:16:43,583 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 10:16:43,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 10:16:43,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260868085] [2022-09-16 10:16:43,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260868085] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 10:16:43,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853258158] [2022-09-16 10:16:43,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 10:16:43,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 10:16:43,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 10:16:43,588 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 10:16:43,616 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 10:16:43,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 10:16:43,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 10:16:43,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 10:16:43,867 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 10:16:43,867 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 10:16:44,049 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 10:16:44,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [853258158] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 10:16:44,050 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 10:16:44,050 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-09-16 10:16:44,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276719104] [2022-09-16 10:16:44,050 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 10:16:44,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-16 10:16:44,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 10:16:44,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-16 10:16:44,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-09-16 10:16:44,052 INFO L87 Difference]: Start difference. First operand 16606 states and 44093 transitions. Second operand has 12 states, 11 states have (on average 26.272727272727273) internal successors, (289), 12 states have internal predecessors, (289), 0 states have call successors, (0), 0 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 10:16:44,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 10:16:44,498 INFO L93 Difference]: Finished difference Result 28223 states and 74876 transitions. [2022-09-16 10:16:44,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-16 10:16:44,498 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 26.272727272727273) internal successors, (289), 12 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2022-09-16 10:16:44,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 10:16:44,562 INFO L225 Difference]: With dead ends: 28223 [2022-09-16 10:16:44,562 INFO L226 Difference]: Without dead ends: 28223 [2022-09-16 10:16:44,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=158, Invalid=304, Unknown=0, NotChecked=0, Total=462 [2022-09-16 10:16:44,563 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 749 mSDsluCounter, 1279 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 749 SdHoareTripleChecker+Valid, 1435 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-09-16 10:16:44,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [749 Valid, 1435 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-09-16 10:16:44,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28223 states. [2022-09-16 10:16:44,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28223 to 25190. [2022-09-16 10:16:45,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25190 states, 25174 states have (on average 2.695717804083578) internal successors, (67862), 25189 states have internal predecessors, (67862), 0 states have call successors, (0), 0 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 10:16:45,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25190 states to 25190 states and 67862 transitions. [2022-09-16 10:16:45,063 INFO L78 Accepts]: Start accepts. Automaton has 25190 states and 67862 transitions. Word has length 118 [2022-09-16 10:16:45,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 10:16:45,064 INFO L495 AbstractCegarLoop]: Abstraction has 25190 states and 67862 transitions. [2022-09-16 10:16:45,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 26.272727272727273) internal successors, (289), 12 states have internal predecessors, (289), 0 states have call successors, (0), 0 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 10:16:45,064 INFO L276 IsEmpty]: Start isEmpty. Operand 25190 states and 67862 transitions. [2022-09-16 10:16:45,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-09-16 10:16:45,073 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 10:16:45,073 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 10:16:45,089 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-09-16 10:16:45,274 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,SelfDestructingSolverStorable9 [2022-09-16 10:16:45,274 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-09-16 10:16:45,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 10:16:45,275 INFO L85 PathProgramCache]: Analyzing trace with hash -1025405840, now seen corresponding path program 1 times [2022-09-16 10:16:45,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 10:16:45,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658903205] [2022-09-16 10:16:45,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 10:16:45,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 10:16:45,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 10:16:45,348 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 10:16:45,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 10:16:45,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658903205] [2022-09-16 10:16:45,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658903205] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 10:16:45,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [911947426] [2022-09-16 10:16:45,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 10:16:45,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 10:16:45,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 10:16:45,351 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 10:16:45,352 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 10:16:45,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 10:16:45,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 10:16:45,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 10:16:45,610 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 10:16:45,610 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 10:16:45,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [911947426] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 10:16:45,610 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 10:16:45,611 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 10:16:45,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625783948] [2022-09-16 10:16:45,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 10:16:45,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 10:16:45,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 10:16:45,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 10:16:45,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 10:16:45,612 INFO L87 Difference]: Start difference. First operand 25190 states and 67862 transitions. Second operand has 6 states, 5 states have (on average 23.8) internal successors, (119), 6 states have internal predecessors, (119), 0 states have call successors, (0), 0 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 10:16:45,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 10:16:45,816 INFO L93 Difference]: Finished difference Result 29008 states and 77986 transitions. [2022-09-16 10:16:45,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-09-16 10:16:45,817 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 23.8) internal successors, (119), 6 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 119 [2022-09-16 10:16:45,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 10:16:46,110 INFO L225 Difference]: With dead ends: 29008 [2022-09-16 10:16:46,110 INFO L226 Difference]: Without dead ends: 29008 [2022-09-16 10:16:46,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-09-16 10:16:46,127 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 237 mSDsluCounter, 734 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 995 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-09-16 10:16:46,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 995 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-09-16 10:16:46,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29008 states. [2022-09-16 10:16:46,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29008 to 27692. [2022-09-16 10:16:46,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27692 states, 27676 states have (on average 2.70642433877728) internal successors, (74903), 27691 states have internal predecessors, (74903), 0 states have call successors, (0), 0 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 10:16:46,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27692 states to 27692 states and 74903 transitions. [2022-09-16 10:16:46,690 INFO L78 Accepts]: Start accepts. Automaton has 27692 states and 74903 transitions. Word has length 119 [2022-09-16 10:16:46,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 10:16:46,690 INFO L495 AbstractCegarLoop]: Abstraction has 27692 states and 74903 transitions. [2022-09-16 10:16:46,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 23.8) internal successors, (119), 6 states have internal predecessors, (119), 0 states have call successors, (0), 0 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 10:16:46,691 INFO L276 IsEmpty]: Start isEmpty. Operand 27692 states and 74903 transitions. [2022-09-16 10:16:46,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-09-16 10:16:46,703 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 10:16:46,703 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 10:16:46,720 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 10:16:46,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 10:16:46,907 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-09-16 10:16:46,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 10:16:46,907 INFO L85 PathProgramCache]: Analyzing trace with hash -138872712, now seen corresponding path program 1 times [2022-09-16 10:16:46,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 10:16:46,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148628220] [2022-09-16 10:16:46,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 10:16:46,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 10:16:46,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 10:16:46,962 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 10:16:46,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 10:16:46,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148628220] [2022-09-16 10:16:46,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148628220] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 10:16:46,963 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 10:16:46,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 10:16:46,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440980942] [2022-09-16 10:16:46,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 10:16:46,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 10:16:46,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 10:16:46,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 10:16:46,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 10:16:46,964 INFO L87 Difference]: Start difference. First operand 27692 states and 74903 transitions. Second operand has 4 states, 3 states have (on average 44.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 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 10:16:47,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 10:16:47,123 INFO L93 Difference]: Finished difference Result 27276 states and 73300 transitions. [2022-09-16 10:16:47,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 10:16:47,124 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 44.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2022-09-16 10:16:47,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 10:16:47,198 INFO L225 Difference]: With dead ends: 27276 [2022-09-16 10:16:47,199 INFO L226 Difference]: Without dead ends: 27276 [2022-09-16 10:16:47,199 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-09-16 10:16:47,199 INFO L413 NwaCegarLoop]: 277 mSDtfsCounter, 222 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 638 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-09-16 10:16:47,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 638 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-09-16 10:16:47,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27276 states. [2022-09-16 10:16:47,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27276 to 27276. [2022-09-16 10:16:47,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27276 states, 27264 states have (on average 2.6885269953051645) internal successors, (73300), 27275 states have internal predecessors, (73300), 0 states have call successors, (0), 0 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 10:16:47,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27276 states to 27276 states and 73300 transitions. [2022-09-16 10:16:47,846 INFO L78 Accepts]: Start accepts. Automaton has 27276 states and 73300 transitions. Word has length 132 [2022-09-16 10:16:47,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 10:16:47,847 INFO L495 AbstractCegarLoop]: Abstraction has 27276 states and 73300 transitions. [2022-09-16 10:16:47,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 44.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 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 10:16:47,847 INFO L276 IsEmpty]: Start isEmpty. Operand 27276 states and 73300 transitions. [2022-09-16 10:16:47,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-09-16 10:16:47,858 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 10:16:47,859 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 10:16:47,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-09-16 10:16:47,859 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-09-16 10:16:47,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 10:16:47,859 INFO L85 PathProgramCache]: Analyzing trace with hash -10086240, now seen corresponding path program 1 times [2022-09-16 10:16:47,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 10:16:47,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851183143] [2022-09-16 10:16:47,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 10:16:47,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 10:16:47,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 10:16:47,928 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 10:16:47,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 10:16:47,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851183143] [2022-09-16 10:16:47,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851183143] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 10:16:47,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [657040866] [2022-09-16 10:16:47,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 10:16:47,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 10:16:47,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 10:16:47,931 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 10:16:47,932 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 10:16:48,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 10:16:48,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 10:16:48,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 10:16:48,383 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 10:16:48,383 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 10:16:48,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [657040866] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 10:16:48,384 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 10:16:48,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 10:16:48,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419574703] [2022-09-16 10:16:48,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 10:16:48,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 10:16:48,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 10:16:48,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 10:16:48,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 10:16:48,388 INFO L87 Difference]: Start difference. First operand 27276 states and 73300 transitions. Second operand has 6 states, 5 states have (on average 26.6) internal successors, (133), 6 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 10:16:48,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 10:16:48,540 INFO L93 Difference]: Finished difference Result 26868 states and 71711 transitions. [2022-09-16 10:16:48,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 10:16:48,540 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 26.6) internal successors, (133), 6 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 133 [2022-09-16 10:16:48,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 10:16:48,593 INFO L225 Difference]: With dead ends: 26868 [2022-09-16 10:16:48,593 INFO L226 Difference]: Without dead ends: 26832 [2022-09-16 10:16:48,593 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-09-16 10:16:48,594 INFO L413 NwaCegarLoop]: 450 mSDtfsCounter, 380 mSDsluCounter, 709 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 1150 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-09-16 10:16:48,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [380 Valid, 1150 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-09-16 10:16:48,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26832 states. [2022-09-16 10:16:49,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26832 to 26812. [2022-09-16 10:16:49,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26812 states, 26804 states have (on average 2.6690419340396954) internal successors, (71541), 26811 states have internal predecessors, (71541), 0 states have call successors, (0), 0 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 10:16:49,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26812 states to 26812 states and 71541 transitions. [2022-09-16 10:16:49,121 INFO L78 Accepts]: Start accepts. Automaton has 26812 states and 71541 transitions. Word has length 133 [2022-09-16 10:16:49,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 10:16:49,122 INFO L495 AbstractCegarLoop]: Abstraction has 26812 states and 71541 transitions. [2022-09-16 10:16:49,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 26.6) internal successors, (133), 6 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 10:16:49,122 INFO L276 IsEmpty]: Start isEmpty. Operand 26812 states and 71541 transitions. [2022-09-16 10:16:49,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-09-16 10:16:49,140 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 10:16:49,140 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:16:49,156 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 10:16:49,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 10:16:49,341 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-09-16 10:16:49,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 10:16:49,341 INFO L85 PathProgramCache]: Analyzing trace with hash -2118754789, now seen corresponding path program 1 times [2022-09-16 10:16:49,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 10:16:49,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942675218] [2022-09-16 10:16:49,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 10:16:49,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 10:16:49,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 10:16:49,433 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 10:16:49,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 10:16:49,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942675218] [2022-09-16 10:16:49,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942675218] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 10:16:49,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [838417373] [2022-09-16 10:16:49,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 10:16:49,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 10:16:49,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 10:16:49,435 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 10:16:49,436 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 10:16:49,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 10:16:49,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 7 conjunts are in the unsatisfiable core [2022-09-16 10:16:49,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 10:16:49,733 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 10:16:49,733 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 10:16:49,982 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 10:16:49,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [838417373] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 10:16:49,983 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 10:16:49,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-09-16 10:16:49,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340912751] [2022-09-16 10:16:49,983 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 10:16:49,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-09-16 10:16:49,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 10:16:49,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-09-16 10:16:49,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2022-09-16 10:16:49,985 INFO L87 Difference]: Start difference. First operand 26812 states and 71541 transitions. Second operand has 16 states, 15 states have (on average 25.533333333333335) internal successors, (383), 16 states have internal predecessors, (383), 0 states have call successors, (0), 0 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 10:16:50,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 10:16:50,568 INFO L93 Difference]: Finished difference Result 35735 states and 95077 transitions. [2022-09-16 10:16:50,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-09-16 10:16:50,568 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 25.533333333333335) internal successors, (383), 16 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2022-09-16 10:16:50,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 10:16:50,653 INFO L225 Difference]: With dead ends: 35735 [2022-09-16 10:16:50,653 INFO L226 Difference]: Without dead ends: 35735 [2022-09-16 10:16:50,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 311 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=254, Invalid=738, Unknown=0, NotChecked=0, Total=992 [2022-09-16 10:16:50,655 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 1303 mSDsluCounter, 1425 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1303 SdHoareTripleChecker+Valid, 1572 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-09-16 10:16:50,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1303 Valid, 1572 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-09-16 10:16:50,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35735 states. [2022-09-16 10:16:51,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35735 to 29595. [2022-09-16 10:16:51,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29595 states, 29589 states have (on average 2.682618540673899) internal successors, (79376), 29594 states have internal predecessors, (79376), 0 states have call successors, (0), 0 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 10:16:51,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29595 states to 29595 states and 79376 transitions. [2022-09-16 10:16:51,326 INFO L78 Accepts]: Start accepts. Automaton has 29595 states and 79376 transitions. Word has length 160 [2022-09-16 10:16:51,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 10:16:51,327 INFO L495 AbstractCegarLoop]: Abstraction has 29595 states and 79376 transitions. [2022-09-16 10:16:51,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 25.533333333333335) internal successors, (383), 16 states have internal predecessors, (383), 0 states have call successors, (0), 0 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 10:16:51,327 INFO L276 IsEmpty]: Start isEmpty. Operand 29595 states and 79376 transitions. [2022-09-16 10:16:51,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-09-16 10:16:51,342 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 10:16:51,342 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:16:51,364 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 10:16:51,562 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,SelfDestructingSolverStorable13 [2022-09-16 10:16:51,563 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-09-16 10:16:51,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 10:16:51,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1982893721, now seen corresponding path program 1 times [2022-09-16 10:16:51,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 10:16:51,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720648444] [2022-09-16 10:16:51,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 10:16:51,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 10:16:51,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 10:16:51,649 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 10:16:51,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 10:16:51,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720648444] [2022-09-16 10:16:51,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720648444] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 10:16:51,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [607332255] [2022-09-16 10:16:51,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 10:16:51,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 10:16:51,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 10:16:51,652 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 10:16:51,653 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 10:16:51,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 10:16:51,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 7 conjunts are in the unsatisfiable core [2022-09-16 10:16:51,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 10:16:51,973 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 10:16:51,973 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 10:16:52,214 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 10:16:52,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [607332255] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 10:16:52,215 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 10:16:52,215 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 13 [2022-09-16 10:16:52,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049757544] [2022-09-16 10:16:52,215 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 10:16:52,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-09-16 10:16:52,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 10:16:52,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-09-16 10:16:52,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2022-09-16 10:16:52,217 INFO L87 Difference]: Start difference. First operand 29595 states and 79376 transitions. Second operand has 14 states, 13 states have (on average 29.307692307692307) internal successors, (381), 14 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 10:16:52,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 10:16:52,888 INFO L93 Difference]: Finished difference Result 56655 states and 152437 transitions. [2022-09-16 10:16:52,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-09-16 10:16:52,888 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 29.307692307692307) internal successors, (381), 14 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2022-09-16 10:16:52,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 10:16:53,004 INFO L225 Difference]: With dead ends: 56655 [2022-09-16 10:16:53,004 INFO L226 Difference]: Without dead ends: 56655 [2022-09-16 10:16:53,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 313 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=191, Invalid=621, Unknown=0, NotChecked=0, Total=812 [2022-09-16 10:16:53,005 INFO L413 NwaCegarLoop]: 253 mSDtfsCounter, 1226 mSDsluCounter, 1652 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1226 SdHoareTripleChecker+Valid, 1877 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-09-16 10:16:53,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1226 Valid, 1877 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-09-16 10:16:53,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56655 states. [2022-09-16 10:16:53,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56655 to 47081. [2022-09-16 10:16:54,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47081 states, 47075 states have (on average 2.7051301115241637) internal successors, (127344), 47080 states have internal predecessors, (127344), 0 states have call successors, (0), 0 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 10:16:54,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47081 states to 47081 states and 127344 transitions. [2022-09-16 10:16:54,137 INFO L78 Accepts]: Start accepts. Automaton has 47081 states and 127344 transitions. Word has length 160 [2022-09-16 10:16:54,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 10:16:54,137 INFO L495 AbstractCegarLoop]: Abstraction has 47081 states and 127344 transitions. [2022-09-16 10:16:54,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 29.307692307692307) internal successors, (381), 14 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 10:16:54,137 INFO L276 IsEmpty]: Start isEmpty. Operand 47081 states and 127344 transitions. [2022-09-16 10:16:54,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2022-09-16 10:16:54,201 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 10:16:54,201 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-09-16 10:16:54,228 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 10:16:54,428 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,SelfDestructingSolverStorable14 [2022-09-16 10:16:54,428 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-09-16 10:16:54,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 10:16:54,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1971445504, now seen corresponding path program 2 times [2022-09-16 10:16:54,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 10:16:54,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661852453] [2022-09-16 10:16:54,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 10:16:54,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 10:16:54,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 10:16:54,604 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 0 proven. 402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 10:16:54,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 10:16:54,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661852453] [2022-09-16 10:16:54,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661852453] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 10:16:54,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1997716034] [2022-09-16 10:16:54,605 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 10:16:54,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 10:16:54,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 10:16:54,607 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 10:16:54,608 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 10:16:54,787 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-09-16 10:16:54,787 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 10:16:54,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 514 conjuncts, 11 conjunts are in the unsatisfiable core [2022-09-16 10:16:54,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 10:16:55,095 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 0 proven. 402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 10:16:55,095 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 10:16:55,696 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 0 proven. 402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 10:16:55,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1997716034] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 10:16:55,697 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 10:16:55,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2022-09-16 10:16:55,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799375949] [2022-09-16 10:16:55,697 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 10:16:55,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-09-16 10:16:55,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 10:16:55,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-09-16 10:16:55,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2022-09-16 10:16:55,699 INFO L87 Difference]: Start difference. First operand 47081 states and 127344 transitions. Second operand has 24 states, 23 states have (on average 24.82608695652174) internal successors, (571), 24 states have internal predecessors, (571), 0 states have call successors, (0), 0 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 10:16:56,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 10:16:56,447 INFO L93 Difference]: Finished difference Result 80661 states and 215818 transitions. [2022-09-16 10:16:56,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-09-16 10:16:56,448 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 24.82608695652174) internal successors, (571), 24 states have internal predecessors, (571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 259 [2022-09-16 10:16:56,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 10:16:56,804 INFO L225 Difference]: With dead ends: 80661 [2022-09-16 10:16:56,804 INFO L226 Difference]: Without dead ends: 80661 [2022-09-16 10:16:56,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 546 GetRequests, 505 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 382 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=576, Invalid=1230, Unknown=0, NotChecked=0, Total=1806 [2022-09-16 10:16:56,805 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 2975 mSDsluCounter, 1862 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2975 SdHoareTripleChecker+Valid, 2000 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-09-16 10:16:56,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2975 Valid, 2000 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-09-16 10:16:56,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80661 states. [2022-09-16 10:16:58,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80661 to 65925. [2022-09-16 10:16:58,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65925 states, 65919 states have (on average 2.6984480953897965) internal successors, (177879), 65924 states have internal predecessors, (177879), 0 states have call successors, (0), 0 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 10:16:58,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65925 states to 65925 states and 177879 transitions. [2022-09-16 10:16:58,314 INFO L78 Accepts]: Start accepts. Automaton has 65925 states and 177879 transitions. Word has length 259 [2022-09-16 10:16:58,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 10:16:58,314 INFO L495 AbstractCegarLoop]: Abstraction has 65925 states and 177879 transitions. [2022-09-16 10:16:58,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 24.82608695652174) internal successors, (571), 24 states have internal predecessors, (571), 0 states have call successors, (0), 0 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 10:16:58,315 INFO L276 IsEmpty]: Start isEmpty. Operand 65925 states and 177879 transitions. [2022-09-16 10:16:58,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2022-09-16 10:16:58,366 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 10:16:58,366 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:16:58,383 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-09-16 10:16:58,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 10:16:58,568 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-09-16 10:16:58,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 10:16:58,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1138988077, now seen corresponding path program 1 times [2022-09-16 10:16:58,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 10:16:58,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685851382] [2022-09-16 10:16:58,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 10:16:58,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 10:16:58,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 10:16:58,708 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 215 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-09-16 10:16:58,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 10:16:58,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685851382] [2022-09-16 10:16:58,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685851382] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 10:16:58,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1775779050] [2022-09-16 10:16:58,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 10:16:58,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 10:16:58,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 10:16:58,711 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 10:16:58,712 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 10:16:58,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 10:16:58,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 527 conjuncts, 11 conjunts are in the unsatisfiable core [2022-09-16 10:16:58,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 10:16:59,148 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 184 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-09-16 10:16:59,149 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 10:16:59,480 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 184 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-09-16 10:16:59,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1775779050] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 10:16:59,480 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 10:16:59,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 17 [2022-09-16 10:16:59,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316191563] [2022-09-16 10:16:59,481 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 10:16:59,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-09-16 10:16:59,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 10:16:59,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-09-16 10:16:59,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2022-09-16 10:16:59,482 INFO L87 Difference]: Start difference. First operand 65925 states and 177879 transitions. Second operand has 18 states, 17 states have (on average 29.0) internal successors, (493), 18 states have internal predecessors, (493), 0 states have call successors, (0), 0 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 10:17:00,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 10:17:00,940 INFO L93 Difference]: Finished difference Result 141595 states and 380800 transitions. [2022-09-16 10:17:00,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-09-16 10:17:00,940 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 29.0) internal successors, (493), 18 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 262 [2022-09-16 10:17:00,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 10:17:01,337 INFO L225 Difference]: With dead ends: 141595 [2022-09-16 10:17:01,337 INFO L226 Difference]: Without dead ends: 141595 [2022-09-16 10:17:01,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 559 GetRequests, 517 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 449 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=459, Invalid=1433, Unknown=0, NotChecked=0, Total=1892 [2022-09-16 10:17:01,338 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 2094 mSDsluCounter, 1831 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2094 SdHoareTripleChecker+Valid, 1988 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-09-16 10:17:01,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2094 Valid, 1988 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-09-16 10:17:01,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141595 states. [2022-09-16 10:17:03,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141595 to 112731. [2022-09-16 10:17:03,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112731 states, 112725 states have (on average 2.7311332889776003) internal successors, (307867), 112730 states have internal predecessors, (307867), 0 states have call successors, (0), 0 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 10:17:04,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112731 states to 112731 states and 307867 transitions. [2022-09-16 10:17:04,718 INFO L78 Accepts]: Start accepts. Automaton has 112731 states and 307867 transitions. Word has length 262 [2022-09-16 10:17:04,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 10:17:04,719 INFO L495 AbstractCegarLoop]: Abstraction has 112731 states and 307867 transitions. [2022-09-16 10:17:04,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 29.0) internal successors, (493), 18 states have internal predecessors, (493), 0 states have call successors, (0), 0 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 10:17:04,719 INFO L276 IsEmpty]: Start isEmpty. Operand 112731 states and 307867 transitions. [2022-09-16 10:17:04,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-09-16 10:17:04,816 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 10:17:04,817 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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 10:17:04,834 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 10:17:05,022 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,SelfDestructingSolverStorable16 [2022-09-16 10:17:05,023 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-09-16 10:17:05,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 10:17:05,023 INFO L85 PathProgramCache]: Analyzing trace with hash -1838004215, now seen corresponding path program 2 times [2022-09-16 10:17:05,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 10:17:05,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955355010] [2022-09-16 10:17:05,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 10:17:05,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 10:17:05,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 10:17:05,224 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 364 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 10:17:05,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 10:17:05,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955355010] [2022-09-16 10:17:05,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955355010] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 10:17:05,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636807978] [2022-09-16 10:17:05,225 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 10:17:05,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 10:17:05,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 10:17:05,226 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 10:17:05,228 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 10:17:05,372 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-09-16 10:17:05,372 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 10:17:05,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 572 conjuncts, 13 conjunts are in the unsatisfiable core [2022-09-16 10:17:05,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 10:17:05,674 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 363 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 10:17:05,674 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 10:17:06,434 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 363 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 10:17:06,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1636807978] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 10:17:06,435 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 10:17:06,435 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 25 [2022-09-16 10:17:06,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141354397] [2022-09-16 10:17:06,435 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 10:17:06,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-09-16 10:17:06,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 10:17:06,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-09-16 10:17:06,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=499, Unknown=0, NotChecked=0, Total=650 [2022-09-16 10:17:06,437 INFO L87 Difference]: Start difference. First operand 112731 states and 307867 transitions. Second operand has 26 states, 25 states have (on average 26.28) internal successors, (657), 26 states have internal predecessors, (657), 0 states have call successors, (0), 0 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 10:17:08,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 10:17:08,263 INFO L93 Difference]: Finished difference Result 223479 states and 607625 transitions. [2022-09-16 10:17:08,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-09-16 10:17:08,263 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 26.28) internal successors, (657), 26 states have internal predecessors, (657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 298 [2022-09-16 10:17:08,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 10:17:09,185 INFO L225 Difference]: With dead ends: 223479 [2022-09-16 10:17:09,185 INFO L226 Difference]: Without dead ends: 223479 [2022-09-16 10:17:09,186 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 643 GetRequests, 583 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 880 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=848, Invalid=2934, Unknown=0, NotChecked=0, Total=3782 [2022-09-16 10:17:09,186 INFO L413 NwaCegarLoop]: 253 mSDtfsCounter, 2917 mSDsluCounter, 2930 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2917 SdHoareTripleChecker+Valid, 3134 SdHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-09-16 10:17:09,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2917 Valid, 3134 Invalid, 461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-09-16 10:17:09,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223479 states. [2022-09-16 10:17:13,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223479 to 150069. [2022-09-16 10:17:13,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150069 states, 150063 states have (on average 2.7426947348780177) internal successors, (411577), 150068 states have internal predecessors, (411577), 0 states have call successors, (0), 0 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 10:17:13,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150069 states to 150069 states and 411577 transitions. [2022-09-16 10:17:13,781 INFO L78 Accepts]: Start accepts. Automaton has 150069 states and 411577 transitions. Word has length 298 [2022-09-16 10:17:13,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 10:17:13,781 INFO L495 AbstractCegarLoop]: Abstraction has 150069 states and 411577 transitions. [2022-09-16 10:17:13,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 26.28) internal successors, (657), 26 states have internal predecessors, (657), 0 states have call successors, (0), 0 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 10:17:13,782 INFO L276 IsEmpty]: Start isEmpty. Operand 150069 states and 411577 transitions. [2022-09-16 10:17:14,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2022-09-16 10:17:14,400 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 10:17:14,400 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 10:17:14,419 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-09-16 10:17:14,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-09-16 10:17:14,601 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-09-16 10:17:14,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 10:17:14,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1380738713, now seen corresponding path program 1 times [2022-09-16 10:17:14,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 10:17:14,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014025739] [2022-09-16 10:17:14,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 10:17:14,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 10:17:14,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 10:17:14,782 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 0 proven. 324 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-09-16 10:17:14,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 10:17:14,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014025739] [2022-09-16 10:17:14,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014025739] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 10:17:14,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1069104610] [2022-09-16 10:17:14,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 10:17:14,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 10:17:14,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 10:17:14,784 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 10:17:14,786 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 10:17:14,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 10:17:14,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 673 conjuncts, 15 conjunts are in the unsatisfiable core [2022-09-16 10:17:14,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 10:17:15,282 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 1 proven. 321 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-09-16 10:17:15,282 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 10:17:15,689 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 1 proven. 321 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-09-16 10:17:15,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1069104610] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 10:17:15,690 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 10:17:15,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 23 [2022-09-16 10:17:15,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425714072] [2022-09-16 10:17:15,690 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 10:17:15,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-09-16 10:17:15,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 10:17:15,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-09-16 10:17:15,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=436, Unknown=0, NotChecked=0, Total=552 [2022-09-16 10:17:15,692 INFO L87 Difference]: Start difference. First operand 150069 states and 411577 transitions. Second operand has 24 states, 23 states have (on average 29.347826086956523) internal successors, (675), 24 states have internal predecessors, (675), 0 states have call successors, (0), 0 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 10:17:18,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 10:17:18,027 INFO L93 Difference]: Finished difference Result 350241 states and 956808 transitions. [2022-09-16 10:17:18,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-09-16 10:17:18,027 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 29.347826086956523) internal successors, (675), 24 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 354 [2022-09-16 10:17:18,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 10:17:19,478 INFO L225 Difference]: With dead ends: 350241 [2022-09-16 10:17:19,478 INFO L226 Difference]: Without dead ends: 350241 [2022-09-16 10:17:19,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 750 GetRequests, 699 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 626 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=627, Invalid=2129, Unknown=0, NotChecked=0, Total=2756 [2022-09-16 10:17:19,479 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 2103 mSDsluCounter, 2362 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2103 SdHoareTripleChecker+Valid, 2577 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-09-16 10:17:19,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2103 Valid, 2577 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 320 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-09-16 10:17:20,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350241 states. [2022-09-16 10:17:26,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350241 to 243497. [2022-09-16 10:17:26,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243497 states, 243493 states have (on average 2.779825292718887) internal successors, (676868), 243496 states have internal predecessors, (676868), 0 states have call successors, (0), 0 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 10:17:28,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243497 states to 243497 states and 676868 transitions. [2022-09-16 10:17:28,627 INFO L78 Accepts]: Start accepts. Automaton has 243497 states and 676868 transitions. Word has length 354 [2022-09-16 10:17:28,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 10:17:28,627 INFO L495 AbstractCegarLoop]: Abstraction has 243497 states and 676868 transitions. [2022-09-16 10:17:28,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 29.347826086956523) internal successors, (675), 24 states have internal predecessors, (675), 0 states have call successors, (0), 0 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 10:17:28,628 INFO L276 IsEmpty]: Start isEmpty. Operand 243497 states and 676868 transitions. [2022-09-16 10:17:28,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2022-09-16 10:17:28,999 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 10:17:28,999 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 10:17:29,023 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 10:17:29,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 10:17:29,223 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-09-16 10:17:29,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 10:17:29,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1542550384, now seen corresponding path program 1 times [2022-09-16 10:17:29,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 10:17:29,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30535613] [2022-09-16 10:17:29,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 10:17:29,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 10:17:29,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 10:17:29,484 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 367 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-09-16 10:17:29,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 10:17:29,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30535613] [2022-09-16 10:17:29,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30535613] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 10:17:29,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [522798587] [2022-09-16 10:17:29,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 10:17:29,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 10:17:29,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 10:17:29,487 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 10:17:29,488 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 10:17:29,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 10:17:29,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 686 conjuncts, 15 conjunts are in the unsatisfiable core [2022-09-16 10:17:29,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 10:17:30,183 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 367 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-09-16 10:17:30,183 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 10:17:31,071 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 367 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-09-16 10:17:31,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [522798587] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 10:17:31,072 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 10:17:31,072 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2022-09-16 10:17:31,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386342705] [2022-09-16 10:17:31,072 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 10:17:31,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-09-16 10:17:31,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 10:17:31,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-09-16 10:17:31,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2022-09-16 10:17:31,074 INFO L87 Difference]: Start difference. First operand 243497 states and 676868 transitions. Second operand has 22 states, 21 states have (on average 29.666666666666668) internal successors, (623), 22 states have internal predecessors, (623), 0 states have call successors, (0), 0 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 10:17:34,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 10:17:34,950 INFO L93 Difference]: Finished difference Result 455851 states and 1260435 transitions. [2022-09-16 10:17:34,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-09-16 10:17:34,964 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 29.666666666666668) internal successors, (623), 22 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 355 [2022-09-16 10:17:34,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 10:17:36,661 INFO L225 Difference]: With dead ends: 455851 [2022-09-16 10:17:36,661 INFO L226 Difference]: Without dead ends: 455851 [2022-09-16 10:17:36,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 746 GetRequests, 702 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 484 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=442, Invalid=1538, Unknown=0, NotChecked=0, Total=1980 [2022-09-16 10:17:36,662 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 1512 mSDsluCounter, 2904 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1512 SdHoareTripleChecker+Valid, 3021 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-09-16 10:17:36,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1512 Valid, 3021 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 382 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-09-16 10:17:37,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455851 states. [2022-09-16 10:17:44,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455851 to 293003. [2022-09-16 10:17:45,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293003 states, 292999 states have (on average 2.7844668411837583) internal successors, (815846), 293002 states have internal predecessors, (815846), 0 states have call successors, (0), 0 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 10:17:46,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293003 states to 293003 states and 815846 transitions. [2022-09-16 10:17:46,762 INFO L78 Accepts]: Start accepts. Automaton has 293003 states and 815846 transitions. Word has length 355 [2022-09-16 10:17:46,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 10:17:46,762 INFO L495 AbstractCegarLoop]: Abstraction has 293003 states and 815846 transitions. [2022-09-16 10:17:46,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 29.666666666666668) internal successors, (623), 22 states have internal predecessors, (623), 0 states have call successors, (0), 0 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 10:17:46,763 INFO L276 IsEmpty]: Start isEmpty. Operand 293003 states and 815846 transitions. [2022-09-16 10:17:47,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 451 [2022-09-16 10:17:47,637 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 10:17:47,637 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:17:47,656 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 10:17:47,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 10:17:47,847 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-09-16 10:17:47,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 10:17:47,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1630002323, now seen corresponding path program 2 times [2022-09-16 10:17:47,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 10:17:47,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811910492] [2022-09-16 10:17:47,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 10:17:47,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 10:17:47,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 10:17:48,128 INFO L134 CoverageAnalysis]: Checked inductivity of 1197 backedges. 0 proven. 1181 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-09-16 10:17:48,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 10:17:48,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811910492] [2022-09-16 10:17:48,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811910492] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 10:17:48,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [515119330] [2022-09-16 10:17:48,129 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 10:17:48,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 10:17:48,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 10:17:48,132 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 10:17:48,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-09-16 10:17:48,357 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-09-16 10:17:48,358 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 10:17:48,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 859 conjuncts, 12 conjunts are in the unsatisfiable core [2022-09-16 10:17:48,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 10:17:48,720 INFO L134 CoverageAnalysis]: Checked inductivity of 1197 backedges. 1092 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2022-09-16 10:17:48,720 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 10:17:48,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [515119330] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 10:17:48,720 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 10:17:48,720 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [18] total 30 [2022-09-16 10:17:48,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478248481] [2022-09-16 10:17:48,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 10:17:48,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-09-16 10:17:48,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 10:17:48,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-09-16 10:17:48,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=732, Unknown=0, NotChecked=0, Total=870 [2022-09-16 10:17:48,722 INFO L87 Difference]: Start difference. First operand 293003 states and 815846 transitions. Second operand has 13 states, 13 states have (on average 28.846153846153847) internal successors, (375), 13 states have internal predecessors, (375), 0 states have call successors, (0), 0 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 10:17:52,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 10:17:52,326 INFO L93 Difference]: Finished difference Result 479393 states and 1339048 transitions. [2022-09-16 10:17:52,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-16 10:17:52,326 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 28.846153846153847) internal successors, (375), 13 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 450 [2022-09-16 10:17:52,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 10:17:54,267 INFO L225 Difference]: With dead ends: 479393 [2022-09-16 10:17:54,267 INFO L226 Difference]: Without dead ends: 467177 [2022-09-16 10:17:54,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 450 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=268, Invalid=1292, Unknown=0, NotChecked=0, Total=1560 [2022-09-16 10:17:54,268 INFO L413 NwaCegarLoop]: 1089 mSDtfsCounter, 1017 mSDsluCounter, 4108 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1017 SdHoareTripleChecker+Valid, 5149 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-09-16 10:17:54,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1017 Valid, 5149 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-09-16 10:17:55,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467177 states. [2022-09-16 10:18:01,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467177 to 201589. [2022-09-16 10:18:02,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201589 states, 201587 states have (on average 2.742711583584259) internal successors, (552895), 201588 states have internal predecessors, (552895), 0 states have call successors, (0), 0 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 10:18:04,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201589 states to 201589 states and 552895 transitions. [2022-09-16 10:18:04,205 INFO L78 Accepts]: Start accepts. Automaton has 201589 states and 552895 transitions. Word has length 450 [2022-09-16 10:18:04,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 10:18:04,206 INFO L495 AbstractCegarLoop]: Abstraction has 201589 states and 552895 transitions. [2022-09-16 10:18:04,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 28.846153846153847) internal successors, (375), 13 states have internal predecessors, (375), 0 states have call successors, (0), 0 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 10:18:04,206 INFO L276 IsEmpty]: Start isEmpty. Operand 201589 states and 552895 transitions. [2022-09-16 10:18:05,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 484 [2022-09-16 10:18:05,261 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 10:18:05,262 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 10:18:05,286 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-09-16 10:18:05,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-09-16 10:18:05,476 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-09-16 10:18:05,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 10:18:05,476 INFO L85 PathProgramCache]: Analyzing trace with hash 70663616, now seen corresponding path program 1 times [2022-09-16 10:18:05,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 10:18:05,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441362627] [2022-09-16 10:18:05,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 10:18:05,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 10:18:05,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 10:18:05,913 INFO L134 CoverageAnalysis]: Checked inductivity of 1162 backedges. 0 proven. 1116 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-09-16 10:18:05,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 10:18:05,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441362627] [2022-09-16 10:18:05,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441362627] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 10:18:05,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [807150627] [2022-09-16 10:18:05,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 10:18:05,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 10:18:05,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 10:18:05,916 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 10:18:05,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-09-16 10:18:06,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 10:18:06,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 883 conjuncts, 12 conjunts are in the unsatisfiable core [2022-09-16 10:18:06,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 10:18:06,683 INFO L134 CoverageAnalysis]: Checked inductivity of 1162 backedges. 1074 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-09-16 10:18:06,683 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 10:18:06,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [807150627] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 10:18:06,684 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 10:18:06,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [18] total 30 [2022-09-16 10:18:06,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563944901] [2022-09-16 10:18:06,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 10:18:06,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-09-16 10:18:06,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 10:18:06,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-09-16 10:18:06,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=739, Unknown=0, NotChecked=0, Total=870 [2022-09-16 10:18:06,686 INFO L87 Difference]: Start difference. First operand 201589 states and 552895 transitions. Second operand has 13 states, 13 states have (on average 32.07692307692308) internal successors, (417), 13 states have internal predecessors, (417), 0 states have call successors, (0), 0 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 10:18:09,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 10:18:09,248 INFO L93 Difference]: Finished difference Result 379672 states and 1028750 transitions. [2022-09-16 10:18:09,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-16 10:18:09,249 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 32.07692307692308) internal successors, (417), 13 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 483 [2022-09-16 10:18:09,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 10:18:09,249 INFO L225 Difference]: With dead ends: 379672 [2022-09-16 10:18:09,249 INFO L226 Difference]: Without dead ends: 0 [2022-09-16 10:18:09,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 523 GetRequests, 485 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=261, Invalid=1299, Unknown=0, NotChecked=0, Total=1560 [2022-09-16 10:18:09,250 INFO L413 NwaCegarLoop]: 1015 mSDtfsCounter, 943 mSDsluCounter, 3774 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 943 SdHoareTripleChecker+Valid, 4741 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-09-16 10:18:09,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [943 Valid, 4741 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-09-16 10:18:09,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-09-16 10:18:09,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-09-16 10:18:09,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 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 10:18:09,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-09-16 10:18:09,251 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 483 [2022-09-16 10:18:09,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 10:18:09,251 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-09-16 10:18:09,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 32.07692307692308) internal successors, (417), 13 states have internal predecessors, (417), 0 states have call successors, (0), 0 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 10:18:09,252 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-09-16 10:18:09,252 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-09-16 10:18:09,257 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2022-09-16 10:18:09,257 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 18 remaining) [2022-09-16 10:18:09,258 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2022-09-16 10:18:09,258 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2022-09-16 10:18:09,258 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2022-09-16 10:18:09,258 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2022-09-16 10:18:09,258 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2022-09-16 10:18:09,258 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2022-09-16 10:18:09,258 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 18 remaining) [2022-09-16 10:18:09,259 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 18 remaining) [2022-09-16 10:18:09,259 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2022-09-16 10:18:09,259 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2022-09-16 10:18:09,259 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2022-09-16 10:18:09,259 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2022-09-16 10:18:09,259 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2022-09-16 10:18:09,259 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2022-09-16 10:18:09,260 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2022-09-16 10:18:09,260 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2022-09-16 10:18:09,286 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-09-16 10:18:09,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-09-16 10:18:09,482 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 10:18:09,486 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-09-16 10:18:09,486 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-09-16 10:18:09,488 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 10:18:09 BasicIcfg [2022-09-16 10:18:09,488 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-09-16 10:18:09,489 INFO L158 Benchmark]: Toolchain (without parser) took 98972.65ms. Allocated memory was 179.3MB in the beginning and 8.0GB in the end (delta: 7.8GB). Free memory was 116.6MB in the beginning and 5.4GB in the end (delta: -5.3GB). Peak memory consumption was 2.5GB. Max. memory is 8.0GB. [2022-09-16 10:18:09,489 INFO L158 Benchmark]: CDTParser took 0.39ms. Allocated memory is still 179.3MB. Free memory is still 135.5MB. There was no memory consumed. Max. memory is 8.0GB. [2022-09-16 10:18:09,489 INFO L158 Benchmark]: CACSL2BoogieTranslator took 652.76ms. Allocated memory was 179.3MB in the beginning and 244.3MB in the end (delta: 65.0MB). Free memory was 116.5MB in the beginning and 196.2MB in the end (delta: -79.7MB). Peak memory consumption was 14.8MB. Max. memory is 8.0GB. [2022-09-16 10:18:09,489 INFO L158 Benchmark]: Boogie Procedure Inliner took 69.24ms. Allocated memory is still 244.3MB. Free memory was 196.2MB in the beginning and 193.0MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-09-16 10:18:09,490 INFO L158 Benchmark]: Boogie Preprocessor took 46.82ms. Allocated memory is still 244.3MB. Free memory was 193.0MB in the beginning and 191.5MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-09-16 10:18:09,490 INFO L158 Benchmark]: RCFGBuilder took 531.18ms. Allocated memory is still 244.3MB. Free memory was 191.5MB in the beginning and 173.7MB in the end (delta: 17.8MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2022-09-16 10:18:09,490 INFO L158 Benchmark]: TraceAbstraction took 97667.53ms. Allocated memory was 244.3MB in the beginning and 8.0GB in the end (delta: 7.7GB). Free memory was 173.1MB in the beginning and 5.4GB in the end (delta: -5.3GB). Peak memory consumption was 2.5GB. Max. memory is 8.0GB. [2022-09-16 10:18:09,491 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39ms. Allocated memory is still 179.3MB. Free memory is still 135.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 652.76ms. Allocated memory was 179.3MB in the beginning and 244.3MB in the end (delta: 65.0MB). Free memory was 116.5MB in the beginning and 196.2MB in the end (delta: -79.7MB). Peak memory consumption was 14.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 69.24ms. Allocated memory is still 244.3MB. Free memory was 196.2MB in the beginning and 193.0MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 46.82ms. Allocated memory is still 244.3MB. Free memory was 193.0MB in the beginning and 191.5MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 531.18ms. Allocated memory is still 244.3MB. Free memory was 191.5MB in the beginning and 173.7MB in the end (delta: 17.8MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * TraceAbstraction took 97667.53ms. Allocated memory was 244.3MB in the beginning and 8.0GB in the end (delta: 7.7GB). Free memory was 173.1MB in the beginning and 5.4GB in the end (delta: -5.3GB). Peak memory consumption was 2.5GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 992]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 992]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 946]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 946]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1007]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1007]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 950]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 950]: 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 5 procedures, 322 locations, 18 error locations. Started 1 CEGAR loops. OverallTime: 97.5s, OverallIterations: 22, TraceHistogramMax: 8, PathProgramHistogramMax: 2, EmptinessCheckTime: 3.4s, AutomataDifference: 29.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 20131 SdHoareTripleChecker+Valid, 2.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 20131 mSDsluCounter, 37999 SdHoareTripleChecker+Invalid, 1.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 31123 mSDsCounter, 413 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3156 IncrementalHoareTripleChecker+Invalid, 3569 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 413 mSolverCounterUnsat, 7387 mSDtfsCounter, 3156 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5571 GetRequests, 5117 SyntacticMatches, 1 SemanticMatches, 453 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3785 ImplicationChecksByTransitivity, 3.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=293003occurred in iteration=20, InterpolantAutomatonStates: 369, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 48.5s AutomataMinimizationTime, 22 MinimizatonAttempts, 704187 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 9.5s InterpolantComputationTime, 7231 NumberOfCodeBlocks, 7231 NumberOfCodeBlocksAsserted, 38 NumberOfCheckSat, 9154 ConstructedInterpolants, 0 QuantifiedInterpolants, 28544 SizeOfPredicates, 97 NumberOfNonLiveVariables, 6416 ConjunctsInSsa, 123 ConjunctsInUnsatCore, 43 InterpolantComputations, 14 PerfectInterpolantSequences, 3042/10649 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 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-09-16 10:18:09,523 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...