/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/weaver/popl20-more-parray-copy.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-53ca081-m [2022-09-16 11:09:13,459 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-16 11:09:13,461 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-16 11:09:13,482 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-16 11:09:13,483 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-16 11:09:13,483 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-16 11:09:13,484 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-16 11:09:13,485 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-16 11:09:13,487 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-16 11:09:13,487 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-16 11:09:13,488 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-16 11:09:13,489 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-16 11:09:13,489 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-16 11:09:13,489 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-16 11:09:13,490 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-16 11:09:13,491 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-16 11:09:13,492 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-16 11:09:13,492 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-16 11:09:13,493 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-16 11:09:13,494 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-16 11:09:13,495 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-16 11:09:13,500 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-16 11:09:13,500 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-16 11:09:13,501 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-16 11:09:13,503 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-16 11:09:13,503 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-16 11:09:13,504 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-16 11:09:13,504 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-16 11:09:13,504 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-16 11:09:13,505 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-16 11:09:13,505 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-16 11:09:13,505 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-16 11:09:13,506 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-16 11:09:13,506 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-16 11:09:13,507 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-16 11:09:13,507 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-16 11:09:13,508 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-16 11:09:13,508 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-16 11:09:13,508 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-16 11:09:13,508 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-16 11:09:13,509 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-16 11:09:13,510 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 11:09:13,526 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-16 11:09:13,526 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-16 11:09:13,526 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-09-16 11:09:13,526 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-09-16 11:09:13,527 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-16 11:09:13,527 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-16 11:09:13,527 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-16 11:09:13,528 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-16 11:09:13,528 INFO L138 SettingsManager]: * Use SBE=true [2022-09-16 11:09:13,528 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-16 11:09:13,528 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-16 11:09:13,528 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-16 11:09:13,528 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-16 11:09:13,528 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-16 11:09:13,528 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-16 11:09:13,528 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-16 11:09:13,529 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-16 11:09:13,529 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-16 11:09:13,529 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-16 11:09:13,529 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-16 11:09:13,529 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-16 11:09:13,529 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-16 11:09:13,529 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-16 11:09:13,530 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-16 11:09:13,530 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-16 11:09:13,530 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:09:13,530 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-16 11:09:13,530 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-16 11:09:13,531 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-16 11:09:13,531 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-16 11:09:13,531 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-16 11:09:13,531 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-16 11:09:13,531 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-09-16 11:09:13,531 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of error function in SV-COMP mode -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2022-09-16 11:09:13,708 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-16 11:09:13,732 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-16 11:09:13,734 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-16 11:09:13,735 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-16 11:09:13,736 INFO L275 PluginConnector]: CDTParser initialized [2022-09-16 11:09:13,736 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-parray-copy.wvr.c [2022-09-16 11:09:13,786 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18383e71c/6fe09ff098044db2bfd99d15a1865822/FLAGe324bc2b4 [2022-09-16 11:09:14,198 INFO L306 CDTParser]: Found 1 translation units. [2022-09-16 11:09:14,198 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-parray-copy.wvr.c [2022-09-16 11:09:14,205 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18383e71c/6fe09ff098044db2bfd99d15a1865822/FLAGe324bc2b4 [2022-09-16 11:09:14,216 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18383e71c/6fe09ff098044db2bfd99d15a1865822 [2022-09-16 11:09:14,219 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-16 11:09:14,220 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-16 11:09:14,223 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-16 11:09:14,223 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-16 11:09:14,225 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-16 11:09:14,225 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:09:14" (1/1) ... [2022-09-16 11:09:14,226 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50efa5b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:09:14, skipping insertion in model container [2022-09-16 11:09:14,226 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:09:14" (1/1) ... [2022-09-16 11:09:14,231 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-16 11:09:14,248 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-16 11:09:14,388 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-parray-copy.wvr.c[2385,2398] [2022-09-16 11:09:14,394 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:09:14,400 INFO L203 MainTranslator]: Completed pre-run [2022-09-16 11:09:14,414 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-parray-copy.wvr.c[2385,2398] [2022-09-16 11:09:14,417 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:09:14,426 INFO L208 MainTranslator]: Completed translation [2022-09-16 11:09:14,427 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:09:14 WrapperNode [2022-09-16 11:09:14,427 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-16 11:09:14,428 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-16 11:09:14,428 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-16 11:09:14,428 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-16 11:09:14,433 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:09:14" (1/1) ... [2022-09-16 11:09:14,438 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:09:14" (1/1) ... [2022-09-16 11:09:14,463 INFO L138 Inliner]: procedures = 24, calls = 41, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 143 [2022-09-16 11:09:14,463 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-16 11:09:14,464 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-16 11:09:14,464 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-16 11:09:14,464 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-16 11:09:14,469 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:09:14" (1/1) ... [2022-09-16 11:09:14,470 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:09:14" (1/1) ... [2022-09-16 11:09:14,472 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:09:14" (1/1) ... [2022-09-16 11:09:14,473 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:09:14" (1/1) ... [2022-09-16 11:09:14,477 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:09:14" (1/1) ... [2022-09-16 11:09:14,481 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:09:14" (1/1) ... [2022-09-16 11:09:14,482 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:09:14" (1/1) ... [2022-09-16 11:09:14,490 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-16 11:09:14,490 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-16 11:09:14,490 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-16 11:09:14,491 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-16 11:09:14,491 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:09:14" (1/1) ... [2022-09-16 11:09:14,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:09:14,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:09:14,522 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-09-16 11:09:14,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-09-16 11:09:14,563 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-16 11:09:14,564 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-16 11:09:14,564 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-16 11:09:14,564 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-16 11:09:14,564 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-16 11:09:14,564 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-09-16 11:09:14,564 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-09-16 11:09:14,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-16 11:09:14,564 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-16 11:09:14,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-16 11:09:14,564 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-09-16 11:09:14,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-16 11:09:14,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-16 11:09:14,565 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-16 11:09:14,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-16 11:09:14,566 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-09-16 11:09:14,698 INFO L234 CfgBuilder]: Building ICFG [2022-09-16 11:09:14,699 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-16 11:09:14,975 INFO L275 CfgBuilder]: Performing block encoding [2022-09-16 11:09:14,983 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-16 11:09:14,983 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2022-09-16 11:09:14,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:09:14 BoogieIcfgContainer [2022-09-16 11:09:14,985 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-16 11:09:14,987 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-16 11:09:14,990 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-16 11:09:14,993 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-16 11:09:14,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 11:09:14" (1/3) ... [2022-09-16 11:09:14,994 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ff2e913 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:09:14, skipping insertion in model container [2022-09-16 11:09:14,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:09:14" (2/3) ... [2022-09-16 11:09:14,994 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ff2e913 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:09:14, skipping insertion in model container [2022-09-16 11:09:14,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:09:14" (3/3) ... [2022-09-16 11:09:14,995 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-parray-copy.wvr.c [2022-09-16 11:09:15,001 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-09-16 11:09:15,008 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-16 11:09:15,008 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-09-16 11:09:15,008 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-16 11:09:15,085 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-09-16 11:09:15,126 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 224 places, 231 transitions, 486 flow [2022-09-16 11:09:15,770 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 15630 states, 15600 states have (on average 3.810192307692308) internal successors, (59439), 15629 states have internal predecessors, (59439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:09:15,796 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 11:09:15,801 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;@723690a1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 11:09:15,802 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2022-09-16 11:09:15,833 INFO L276 IsEmpty]: Start isEmpty. Operand has 15630 states, 15600 states have (on average 3.810192307692308) internal successors, (59439), 15629 states have internal predecessors, (59439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:09:15,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-09-16 11:09:15,839 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:09:15,839 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] [2022-09-16 11:09:15,840 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-09-16 11:09:15,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:09:15,845 INFO L85 PathProgramCache]: Analyzing trace with hash 710345796, now seen corresponding path program 1 times [2022-09-16 11:09:15,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:09:15,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731913365] [2022-09-16 11:09:15,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:09:15,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:09:15,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:09:16,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:09:16,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:09:16,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731913365] [2022-09-16 11:09:16,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731913365] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:09:16,064 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:09:16,064 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:09:16,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404542858] [2022-09-16 11:09:16,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:09:16,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:09:16,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:09:16,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:09:16,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:09:16,121 INFO L87 Difference]: Start difference. First operand has 15630 states, 15600 states have (on average 3.810192307692308) internal successors, (59439), 15629 states have internal predecessors, (59439), 0 states have call successors, (0), 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 17.333333333333332) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:09:16,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:09:16,784 INFO L93 Difference]: Finished difference Result 31189 states and 113093 transitions. [2022-09-16 11:09:16,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:09:16,787 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 17.333333333333332) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2022-09-16 11:09:16,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:09:17,185 INFO L225 Difference]: With dead ends: 31189 [2022-09-16 11:09:17,185 INFO L226 Difference]: Without dead ends: 31183 [2022-09-16 11:09:17,187 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 11:09:17,189 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 106 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-09-16 11:09:17,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 481 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-09-16 11:09:17,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31183 states. [2022-09-16 11:09:18,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31183 to 15639. [2022-09-16 11:09:18,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15639 states, 15609 states have (on average 3.625664680632968) internal successors, (56593), 15638 states have internal predecessors, (56593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:09:18,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15639 states to 15639 states and 56593 transitions. [2022-09-16 11:09:18,265 INFO L78 Accepts]: Start accepts. Automaton has 15639 states and 56593 transitions. Word has length 52 [2022-09-16 11:09:18,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:09:18,266 INFO L495 AbstractCegarLoop]: Abstraction has 15639 states and 56593 transitions. [2022-09-16 11:09:18,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 17.333333333333332) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:09:18,266 INFO L276 IsEmpty]: Start isEmpty. Operand 15639 states and 56593 transitions. [2022-09-16 11:09:18,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-09-16 11:09:18,267 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:09:18,267 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:09:18,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-16 11:09:18,268 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-09-16 11:09:18,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:09:18,268 INFO L85 PathProgramCache]: Analyzing trace with hash -766050475, now seen corresponding path program 1 times [2022-09-16 11:09:18,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:09:18,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221277786] [2022-09-16 11:09:18,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:09:18,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:09:18,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:09:18,372 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:09:18,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:09:18,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221277786] [2022-09-16 11:09:18,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221277786] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:09:18,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1274148686] [2022-09-16 11:09:18,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:09:18,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:09:18,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:09:18,376 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:09:18,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-09-16 11:09:18,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:09:18,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:09:18,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:09:18,605 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:09:18,605 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:09:18,656 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:09:18,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1274148686] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:09:18,657 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:09:18,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-09-16 11:09:18,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147052387] [2022-09-16 11:09:18,658 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:09:18,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-16 11:09:18,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:09:18,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-16 11:09:18,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-09-16 11:09:18,659 INFO L87 Difference]: Start difference. First operand 15639 states and 56593 transitions. Second operand has 12 states, 11 states have (on average 7.818181818181818) internal successors, (86), 12 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:09:19,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:09:19,697 INFO L93 Difference]: Finished difference Result 77861 states and 282621 transitions. [2022-09-16 11:09:19,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-16 11:09:19,698 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.818181818181818) internal successors, (86), 12 states have internal predecessors, (86), 0 states have call successors, (0), 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 61 [2022-09-16 11:09:19,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:09:20,623 INFO L225 Difference]: With dead ends: 77861 [2022-09-16 11:09:20,624 INFO L226 Difference]: Without dead ends: 77861 [2022-09-16 11:09:20,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 115 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 11:09:20,625 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 849 mSDsluCounter, 1004 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 849 SdHoareTripleChecker+Valid, 1120 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-09-16 11:09:20,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [849 Valid, 1120 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-09-16 11:09:20,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77861 states. [2022-09-16 11:09:21,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77861 to 15691. [2022-09-16 11:09:21,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15691 states, 15661 states have (on average 3.617585083966541) internal successors, (56655), 15690 states have internal predecessors, (56655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:09:22,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15691 states to 15691 states and 56655 transitions. [2022-09-16 11:09:22,163 INFO L78 Accepts]: Start accepts. Automaton has 15691 states and 56655 transitions. Word has length 61 [2022-09-16 11:09:22,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:09:22,163 INFO L495 AbstractCegarLoop]: Abstraction has 15691 states and 56655 transitions. [2022-09-16 11:09:22,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.818181818181818) internal successors, (86), 12 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:09:22,164 INFO L276 IsEmpty]: Start isEmpty. Operand 15691 states and 56655 transitions. [2022-09-16 11:09:22,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-09-16 11:09:22,164 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:09:22,165 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] [2022-09-16 11:09:22,197 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-09-16 11:09:22,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:09:22,372 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-09-16 11:09:22,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:09:22,372 INFO L85 PathProgramCache]: Analyzing trace with hash 2022239485, now seen corresponding path program 1 times [2022-09-16 11:09:22,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:09:22,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195159462] [2022-09-16 11:09:22,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:09:22,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:09:22,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:09:22,447 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:09:22,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:09:22,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195159462] [2022-09-16 11:09:22,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195159462] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:09:22,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586192551] [2022-09-16 11:09:22,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:09:22,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:09:22,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:09:22,449 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:09:22,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-09-16 11:09:22,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:09:22,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:09:22,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:09:22,545 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:09:22,545 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:09:22,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1586192551] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:09:22,545 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:09:22,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 11:09:22,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513942539] [2022-09-16 11:09:22,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:09:22,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:09:22,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:09:22,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:09:22,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:09:22,547 INFO L87 Difference]: Start difference. First operand 15691 states and 56655 transitions. Second operand has 6 states, 5 states have (on average 12.4) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:09:22,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:09:22,818 INFO L93 Difference]: Finished difference Result 31229 states and 113139 transitions. [2022-09-16 11:09:22,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:09:22,819 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.4) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 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 62 [2022-09-16 11:09:22,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:09:23,135 INFO L225 Difference]: With dead ends: 31229 [2022-09-16 11:09:23,135 INFO L226 Difference]: Without dead ends: 31229 [2022-09-16 11:09:23,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 60 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 11:09:23,138 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 216 mSDsluCounter, 649 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 869 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-09-16 11:09:23,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 869 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-09-16 11:09:23,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31229 states. [2022-09-16 11:09:23,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31229 to 15689. [2022-09-16 11:09:23,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15689 states, 15661 states have (on average 3.617201966668795) internal successors, (56649), 15688 states have internal predecessors, (56649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:09:23,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15689 states to 15689 states and 56649 transitions. [2022-09-16 11:09:23,724 INFO L78 Accepts]: Start accepts. Automaton has 15689 states and 56649 transitions. Word has length 62 [2022-09-16 11:09:23,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:09:23,725 INFO L495 AbstractCegarLoop]: Abstraction has 15689 states and 56649 transitions. [2022-09-16 11:09:23,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.4) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:09:23,725 INFO L276 IsEmpty]: Start isEmpty. Operand 15689 states and 56649 transitions. [2022-09-16 11:09:23,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-09-16 11:09:23,726 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:09:23,726 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:09:23,746 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-09-16 11:09:23,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-09-16 11:09:23,939 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-09-16 11:09:23,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:09:23,939 INFO L85 PathProgramCache]: Analyzing trace with hash 824590980, now seen corresponding path program 2 times [2022-09-16 11:09:23,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:09:23,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956590769] [2022-09-16 11:09:23,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:09:23,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:09:23,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:09:24,059 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:09:24,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:09:24,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956590769] [2022-09-16 11:09:24,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956590769] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:09:24,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1633440785] [2022-09-16 11:09:24,060 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:09:24,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:09:24,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:09:24,063 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:09:24,112 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-09-16 11:09:24,148 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-16 11:09:24,148 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:09:24,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 7 conjunts are in the unsatisfiable core [2022-09-16 11:09:24,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:09:24,260 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-09-16 11:09:24,260 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:09:24,372 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-09-16 11:09:24,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1633440785] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:09:24,372 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:09:24,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-09-16 11:09:24,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097705428] [2022-09-16 11:09:24,373 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:09:24,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-09-16 11:09:24,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:09:24,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-09-16 11:09:24,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-09-16 11:09:24,374 INFO L87 Difference]: Start difference. First operand 15689 states and 56649 transitions. Second operand has 18 states, 17 states have (on average 7.470588235294118) internal successors, (127), 18 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:09:25,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:09:25,986 INFO L93 Difference]: Finished difference Result 108953 states and 395617 transitions. [2022-09-16 11:09:25,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-09-16 11:09:25,986 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 7.470588235294118) internal successors, (127), 18 states have internal predecessors, (127), 0 states have call successors, (0), 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 88 [2022-09-16 11:09:25,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:09:26,792 INFO L225 Difference]: With dead ends: 108953 [2022-09-16 11:09:26,792 INFO L226 Difference]: Without dead ends: 108953 [2022-09-16 11:09:26,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 166 SyntacticMatches, 5 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=419, Invalid=1063, Unknown=0, NotChecked=0, Total=1482 [2022-09-16 11:09:26,793 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 3508 mSDsluCounter, 1021 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3508 SdHoareTripleChecker+Valid, 1119 SdHoareTripleChecker+Invalid, 451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-09-16 11:09:26,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3508 Valid, 1119 Invalid, 451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-09-16 11:09:26,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108953 states. [2022-09-16 11:09:28,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108953 to 15621. [2022-09-16 11:09:28,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15621 states, 15595 states have (on average 3.6276370631612695) internal successors, (56573), 15620 states have internal predecessors, (56573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:09:28,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15621 states to 15621 states and 56573 transitions. [2022-09-16 11:09:28,356 INFO L78 Accepts]: Start accepts. Automaton has 15621 states and 56573 transitions. Word has length 88 [2022-09-16 11:09:28,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:09:28,356 INFO L495 AbstractCegarLoop]: Abstraction has 15621 states and 56573 transitions. [2022-09-16 11:09:28,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 7.470588235294118) internal successors, (127), 18 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:09:28,356 INFO L276 IsEmpty]: Start isEmpty. Operand 15621 states and 56573 transitions. [2022-09-16 11:09:28,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-09-16 11:09:28,357 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:09:28,358 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] [2022-09-16 11:09:28,375 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-09-16 11:09:28,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:09:28,565 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-09-16 11:09:28,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:09:28,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1619727328, now seen corresponding path program 1 times [2022-09-16 11:09:28,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:09:28,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810049731] [2022-09-16 11:09:28,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:09:28,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:09:28,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:09:28,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:09:28,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:09:28,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810049731] [2022-09-16 11:09:28,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810049731] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:09:28,617 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:09:28,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:09:28,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308827759] [2022-09-16 11:09:28,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:09:28,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:09:28,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:09:28,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:09:28,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:09:28,618 INFO L87 Difference]: Start difference. First operand 15621 states and 56573 transitions. Second operand has 4 states, 3 states have (on average 32.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:09:28,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:09:28,833 INFO L93 Difference]: Finished difference Result 28149 states and 102068 transitions. [2022-09-16 11:09:28,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:09:28,833 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 32.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 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 96 [2022-09-16 11:09:28,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:09:28,951 INFO L225 Difference]: With dead ends: 28149 [2022-09-16 11:09:28,952 INFO L226 Difference]: Without dead ends: 28149 [2022-09-16 11:09:28,952 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 11:09:28,953 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 149 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 650 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-09-16 11:09:28,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 650 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-09-16 11:09:29,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28149 states. [2022-09-16 11:09:29,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28149 to 22593. [2022-09-16 11:09:29,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22593 states, 22567 states have (on average 3.6837860592901137) internal successors, (83132), 22592 states have internal predecessors, (83132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:09:29,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22593 states to 22593 states and 83132 transitions. [2022-09-16 11:09:29,877 INFO L78 Accepts]: Start accepts. Automaton has 22593 states and 83132 transitions. Word has length 96 [2022-09-16 11:09:29,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:09:29,878 INFO L495 AbstractCegarLoop]: Abstraction has 22593 states and 83132 transitions. [2022-09-16 11:09:29,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 32.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:09:29,878 INFO L276 IsEmpty]: Start isEmpty. Operand 22593 states and 83132 transitions. [2022-09-16 11:09:29,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-09-16 11:09:29,881 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:09:29,881 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] [2022-09-16 11:09:29,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-16 11:09:29,881 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-09-16 11:09:29,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:09:29,882 INFO L85 PathProgramCache]: Analyzing trace with hash -821590381, now seen corresponding path program 1 times [2022-09-16 11:09:29,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:09:29,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439439281] [2022-09-16 11:09:29,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:09:29,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:09:29,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:09:29,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:09:29,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:09:29,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439439281] [2022-09-16 11:09:29,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439439281] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:09:29,949 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:09:29,950 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:09:29,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811512030] [2022-09-16 11:09:29,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:09:29,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:09:29,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:09:29,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:09:29,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:09:29,953 INFO L87 Difference]: Start difference. First operand 22593 states and 83132 transitions. Second operand has 4 states, 3 states have (on average 34.0) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:09:30,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:09:30,227 INFO L93 Difference]: Finished difference Result 40458 states and 149246 transitions. [2022-09-16 11:09:30,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:09:30,227 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 34.0) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 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 102 [2022-09-16 11:09:30,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:09:30,592 INFO L225 Difference]: With dead ends: 40458 [2022-09-16 11:09:30,592 INFO L226 Difference]: Without dead ends: 40458 [2022-09-16 11:09:30,592 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 11:09:30,593 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 137 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 638 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-09-16 11:09:30,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 638 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-09-16 11:09:30,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40458 states. [2022-09-16 11:09:31,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40458 to 33072. [2022-09-16 11:09:31,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33072 states, 33046 states have (on average 3.734582097682019) internal successors, (123413), 33071 states have internal predecessors, (123413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:09:31,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33072 states to 33072 states and 123413 transitions. [2022-09-16 11:09:31,664 INFO L78 Accepts]: Start accepts. Automaton has 33072 states and 123413 transitions. Word has length 102 [2022-09-16 11:09:31,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:09:31,665 INFO L495 AbstractCegarLoop]: Abstraction has 33072 states and 123413 transitions. [2022-09-16 11:09:31,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 34.0) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:09:31,665 INFO L276 IsEmpty]: Start isEmpty. Operand 33072 states and 123413 transitions. [2022-09-16 11:09:31,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-09-16 11:09:31,668 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:09:31,668 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:09:31,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-09-16 11:09:31,668 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-09-16 11:09:31,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:09:31,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1375063558, now seen corresponding path program 1 times [2022-09-16 11:09:31,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:09:31,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327180769] [2022-09-16 11:09:31,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:09:31,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:09:31,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:09:31,713 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:09:31,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:09:31,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327180769] [2022-09-16 11:09:31,714 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327180769] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:09:31,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [615391924] [2022-09-16 11:09:31,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:09:31,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:09:31,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:09:31,715 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:09:31,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-09-16 11:09:31,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:09:31,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 6 conjunts are in the unsatisfiable core [2022-09-16 11:09:31,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:09:32,128 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-09-16 11:09:32,129 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:09:32,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [615391924] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:09:32,129 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:09:32,129 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2022-09-16 11:09:32,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582144363] [2022-09-16 11:09:32,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:09:32,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-16 11:09:32,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:09:32,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-16 11:09:32,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-09-16 11:09:32,133 INFO L87 Difference]: Start difference. First operand 33072 states and 123413 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:09:32,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:09:32,584 INFO L93 Difference]: Finished difference Result 49523 states and 179942 transitions. [2022-09-16 11:09:32,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-16 11:09:32,585 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 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 105 [2022-09-16 11:09:32,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:09:32,796 INFO L225 Difference]: With dead ends: 49523 [2022-09-16 11:09:32,796 INFO L226 Difference]: Without dead ends: 49379 [2022-09-16 11:09:32,797 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2022-09-16 11:09:32,797 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 896 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 896 SdHoareTripleChecker+Valid, 684 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-09-16 11:09:32,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [896 Valid, 684 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-09-16 11:09:33,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49379 states. [2022-09-16 11:09:33,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49379 to 35968. [2022-09-16 11:09:34,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35968 states, 35942 states have (on average 3.728840910355573) internal successors, (134022), 35967 states have internal predecessors, (134022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:09:34,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35968 states to 35968 states and 134022 transitions. [2022-09-16 11:09:34,162 INFO L78 Accepts]: Start accepts. Automaton has 35968 states and 134022 transitions. Word has length 105 [2022-09-16 11:09:34,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:09:34,162 INFO L495 AbstractCegarLoop]: Abstraction has 35968 states and 134022 transitions. [2022-09-16 11:09:34,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:09:34,162 INFO L276 IsEmpty]: Start isEmpty. Operand 35968 states and 134022 transitions. [2022-09-16 11:09:34,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-09-16 11:09:34,165 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:09:34,166 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] [2022-09-16 11:09:34,185 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-09-16 11:09:34,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:09:34,383 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-09-16 11:09:34,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:09:34,384 INFO L85 PathProgramCache]: Analyzing trace with hash -447889375, now seen corresponding path program 1 times [2022-09-16 11:09:34,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:09:34,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691219348] [2022-09-16 11:09:34,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:09:34,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:09:34,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:09:34,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:09:34,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:09:34,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691219348] [2022-09-16 11:09:34,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691219348] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:09:34,461 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:09:34,461 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-16 11:09:34,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942979138] [2022-09-16 11:09:34,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:09:34,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-16 11:09:34,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:09:34,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-16 11:09:34,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:09:34,653 INFO L87 Difference]: Start difference. First operand 35968 states and 134022 transitions. Second operand has 8 states, 7 states have (on average 15.428571428571429) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:09:35,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:09:35,208 INFO L93 Difference]: Finished difference Result 48361 states and 175848 transitions. [2022-09-16 11:09:35,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-09-16 11:09:35,208 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 15.428571428571429) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2022-09-16 11:09:35,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:09:35,414 INFO L225 Difference]: With dead ends: 48361 [2022-09-16 11:09:35,414 INFO L226 Difference]: Without dead ends: 48361 [2022-09-16 11:09:35,415 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=129, Invalid=251, Unknown=0, NotChecked=0, Total=380 [2022-09-16 11:09:35,415 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 989 mSDsluCounter, 772 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 989 SdHoareTripleChecker+Valid, 943 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-09-16 11:09:35,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [989 Valid, 943 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-09-16 11:09:35,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48361 states. [2022-09-16 11:09:36,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48361 to 39536. [2022-09-16 11:09:36,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39536 states, 39510 states have (on average 3.70250569476082) internal successors, (146286), 39535 states have internal predecessors, (146286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:09:36,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39536 states to 39536 states and 146286 transitions. [2022-09-16 11:09:36,823 INFO L78 Accepts]: Start accepts. Automaton has 39536 states and 146286 transitions. Word has length 108 [2022-09-16 11:09:36,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:09:36,824 INFO L495 AbstractCegarLoop]: Abstraction has 39536 states and 146286 transitions. [2022-09-16 11:09:36,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 15.428571428571429) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:09:36,824 INFO L276 IsEmpty]: Start isEmpty. Operand 39536 states and 146286 transitions. [2022-09-16 11:09:36,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-09-16 11:09:36,828 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:09:36,828 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] [2022-09-16 11:09:36,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-09-16 11:09:36,828 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-09-16 11:09:36,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:09:36,829 INFO L85 PathProgramCache]: Analyzing trace with hash -999668129, now seen corresponding path program 1 times [2022-09-16 11:09:36,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:09:36,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840068521] [2022-09-16 11:09:36,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:09:36,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:09:36,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:09:36,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:09:36,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:09:36,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840068521] [2022-09-16 11:09:36,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840068521] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:09:36,885 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:09:36,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:09:36,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141461502] [2022-09-16 11:09:36,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:09:36,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:09:36,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:09:36,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:09:36,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:09:36,886 INFO L87 Difference]: Start difference. First operand 39536 states and 146286 transitions. Second operand has 6 states, 5 states have (on average 21.8) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:09:37,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:09:37,480 INFO L93 Difference]: Finished difference Result 37355 states and 137642 transitions. [2022-09-16 11:09:37,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-16 11:09:37,481 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 21.8) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2022-09-16 11:09:37,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:09:37,637 INFO L225 Difference]: With dead ends: 37355 [2022-09-16 11:09:37,637 INFO L226 Difference]: Without dead ends: 36545 [2022-09-16 11:09:37,637 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-09-16 11:09:37,638 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 167 mSDsluCounter, 585 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 789 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-09-16 11:09:37,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 789 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-09-16 11:09:37,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36545 states. [2022-09-16 11:09:38,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36545 to 36545. [2022-09-16 11:09:38,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36545 states, 36528 states have (on average 3.686760840998686) internal successors, (134670), 36544 states have internal predecessors, (134670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:09:38,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36545 states to 36545 states and 134670 transitions. [2022-09-16 11:09:38,944 INFO L78 Accepts]: Start accepts. Automaton has 36545 states and 134670 transitions. Word has length 109 [2022-09-16 11:09:38,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:09:38,944 INFO L495 AbstractCegarLoop]: Abstraction has 36545 states and 134670 transitions. [2022-09-16 11:09:38,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 21.8) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:09:38,946 INFO L276 IsEmpty]: Start isEmpty. Operand 36545 states and 134670 transitions. [2022-09-16 11:09:38,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-09-16 11:09:38,950 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:09:38,950 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:09:38,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-09-16 11:09:38,950 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-09-16 11:09:38,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:09:38,951 INFO L85 PathProgramCache]: Analyzing trace with hash 531082435, now seen corresponding path program 1 times [2022-09-16 11:09:38,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:09:38,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038338375] [2022-09-16 11:09:38,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:09:38,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:09:38,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:09:39,025 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:09:39,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:09:39,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038338375] [2022-09-16 11:09:39,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038338375] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:09:39,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1105880695] [2022-09-16 11:09:39,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:09:39,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:09:39,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:09:39,028 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:09:39,029 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-09-16 11:09:39,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:09:39,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:09:39,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:09:39,133 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:09:39,134 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:09:39,166 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:09:39,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1105880695] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:09:39,167 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:09:39,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-09-16 11:09:39,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132606542] [2022-09-16 11:09:39,167 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:09:39,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-16 11:09:39,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:09:39,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-16 11:09:39,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-09-16 11:09:39,168 INFO L87 Difference]: Start difference. First operand 36545 states and 134670 transitions. Second operand has 12 states, 11 states have (on average 12.363636363636363) internal successors, (136), 12 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:09:40,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:09:40,213 INFO L93 Difference]: Finished difference Result 105399 states and 385916 transitions. [2022-09-16 11:09:40,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-16 11:09:40,213 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 12.363636363636363) internal successors, (136), 12 states have internal predecessors, (136), 0 states have call successors, (0), 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 111 [2022-09-16 11:09:40,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:09:41,065 INFO L225 Difference]: With dead ends: 105399 [2022-09-16 11:09:41,065 INFO L226 Difference]: Without dead ends: 105399 [2022-09-16 11:09:41,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 215 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 11:09:41,066 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 1402 mSDsluCounter, 1231 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1402 SdHoareTripleChecker+Valid, 1421 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-09-16 11:09:41,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1402 Valid, 1421 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-09-16 11:09:41,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105399 states. [2022-09-16 11:09:43,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105399 to 80485. [2022-09-16 11:09:43,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80485 states, 80468 states have (on average 3.7673485112094247) internal successors, (303151), 80484 states have internal predecessors, (303151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:09:43,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80485 states to 80485 states and 303151 transitions. [2022-09-16 11:09:43,734 INFO L78 Accepts]: Start accepts. Automaton has 80485 states and 303151 transitions. Word has length 111 [2022-09-16 11:09:43,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:09:43,734 INFO L495 AbstractCegarLoop]: Abstraction has 80485 states and 303151 transitions. [2022-09-16 11:09:43,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 12.363636363636363) internal successors, (136), 12 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:09:43,734 INFO L276 IsEmpty]: Start isEmpty. Operand 80485 states and 303151 transitions. [2022-09-16 11:09:43,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-09-16 11:09:43,739 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:09:43,739 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:09:43,773 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-09-16 11:09:43,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-09-16 11:09:43,957 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-09-16 11:09:43,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:09:43,957 INFO L85 PathProgramCache]: Analyzing trace with hash -716313107, now seen corresponding path program 1 times [2022-09-16 11:09:43,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:09:43,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184646534] [2022-09-16 11:09:43,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:09:43,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:09:43,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:09:44,017 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:09:44,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:09:44,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184646534] [2022-09-16 11:09:44,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184646534] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:09:44,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1773069310] [2022-09-16 11:09:44,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:09:44,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:09:44,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:09:44,019 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:09:44,020 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-09-16 11:09:44,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:09:44,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:09:44,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:09:44,119 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:09:44,119 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:09:44,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1773069310] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:09:44,120 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:09:44,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 11:09:44,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310536788] [2022-09-16 11:09:44,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:09:44,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:09:44,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:09:44,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:09:44,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:09:44,121 INFO L87 Difference]: Start difference. First operand 80485 states and 303151 transitions. Second operand has 6 states, 5 states have (on average 22.4) internal successors, (112), 6 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:09:45,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:09:45,076 INFO L93 Difference]: Finished difference Result 82911 states and 307373 transitions. [2022-09-16 11:09:45,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:09:45,078 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 22.4) internal successors, (112), 6 states have internal predecessors, (112), 0 states have call successors, (0), 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 112 [2022-09-16 11:09:45,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:09:45,783 INFO L225 Difference]: With dead ends: 82911 [2022-09-16 11:09:45,783 INFO L226 Difference]: Without dead ends: 82911 [2022-09-16 11:09:45,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 110 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 11:09:45,784 INFO L413 NwaCegarLoop]: 319 mSDtfsCounter, 227 mSDsluCounter, 931 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 1219 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-09-16 11:09:45,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 1219 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-09-16 11:09:45,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82911 states. [2022-09-16 11:09:47,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82911 to 78795. [2022-09-16 11:09:47,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78795 states, 78784 states have (on average 3.7263657595450854) internal successors, (293578), 78794 states have internal predecessors, (293578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:09:48,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78795 states to 78795 states and 293578 transitions. [2022-09-16 11:09:48,293 INFO L78 Accepts]: Start accepts. Automaton has 78795 states and 293578 transitions. Word has length 112 [2022-09-16 11:09:48,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:09:48,293 INFO L495 AbstractCegarLoop]: Abstraction has 78795 states and 293578 transitions. [2022-09-16 11:09:48,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 22.4) internal successors, (112), 6 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:09:48,293 INFO L276 IsEmpty]: Start isEmpty. Operand 78795 states and 293578 transitions. [2022-09-16 11:09:48,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-09-16 11:09:48,310 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:09:48,310 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:09:48,326 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-09-16 11:09:48,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:09:48,529 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-09-16 11:09:48,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:09:48,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1854253484, now seen corresponding path program 1 times [2022-09-16 11:09:48,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:09:48,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340386542] [2022-09-16 11:09:48,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:09:48,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:09:48,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:09:48,569 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-16 11:09:48,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:09:48,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340386542] [2022-09-16 11:09:48,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340386542] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:09:48,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [620459290] [2022-09-16 11:09:48,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:09:48,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:09:48,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:09:48,571 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:09:48,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-09-16 11:09:48,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:09:48,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 10 conjunts are in the unsatisfiable core [2022-09-16 11:09:48,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:09:48,834 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:09:48,834 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:09:49,075 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:09:49,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [620459290] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:09:49,076 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:09:49,076 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 11, 11] total 23 [2022-09-16 11:09:49,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90176111] [2022-09-16 11:09:49,076 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:09:49,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-09-16 11:09:49,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:09:49,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-09-16 11:09:49,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2022-09-16 11:09:49,078 INFO L87 Difference]: Start difference. First operand 78795 states and 293578 transitions. Second operand has 23 states, 23 states have (on average 11.347826086956522) internal successors, (261), 23 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:09:52,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:09:52,478 INFO L93 Difference]: Finished difference Result 258428 states and 946260 transitions. [2022-09-16 11:09:52,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-09-16 11:09:52,479 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 11.347826086956522) internal successors, (261), 23 states have internal predecessors, (261), 0 states have call successors, (0), 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 123 [2022-09-16 11:09:52,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:09:54,421 INFO L225 Difference]: With dead ends: 258428 [2022-09-16 11:09:54,422 INFO L226 Difference]: Without dead ends: 257636 [2022-09-16 11:09:54,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 231 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 640 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=684, Invalid=2286, Unknown=0, NotChecked=0, Total=2970 [2022-09-16 11:09:54,423 INFO L413 NwaCegarLoop]: 293 mSDtfsCounter, 4819 mSDsluCounter, 3229 mSDsCounter, 0 mSdLazyCounter, 745 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4819 SdHoareTripleChecker+Valid, 3375 SdHoareTripleChecker+Invalid, 864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 745 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-09-16 11:09:54,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4819 Valid, 3375 Invalid, 864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 745 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-09-16 11:09:55,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257636 states. [2022-09-16 11:10:00,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257636 to 133420. [2022-09-16 11:10:00,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133420 states, 133409 states have (on average 3.7789504456221095) internal successors, (504146), 133419 states have internal predecessors, (504146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:10:02,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133420 states to 133420 states and 504146 transitions. [2022-09-16 11:10:02,083 INFO L78 Accepts]: Start accepts. Automaton has 133420 states and 504146 transitions. Word has length 123 [2022-09-16 11:10:02,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:10:02,084 INFO L495 AbstractCegarLoop]: Abstraction has 133420 states and 504146 transitions. [2022-09-16 11:10:02,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 11.347826086956522) internal successors, (261), 23 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:10:02,084 INFO L276 IsEmpty]: Start isEmpty. Operand 133420 states and 504146 transitions. [2022-09-16 11:10:02,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-09-16 11:10:02,105 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:10:02,105 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:10:02,123 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 11:10:02,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:10:02,320 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-09-16 11:10:02,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:10:02,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1372095813, now seen corresponding path program 1 times [2022-09-16 11:10:02,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:10:02,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060986291] [2022-09-16 11:10:02,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:10:02,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:10:02,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:10:02,475 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:10:02,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:10:02,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060986291] [2022-09-16 11:10:02,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060986291] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:10:02,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1862904723] [2022-09-16 11:10:02,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:10:02,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:10:02,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:10:02,495 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:10:02,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-09-16 11:10:02,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:10:02,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:10:02,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:10:02,739 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-16 11:10:02,740 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:10:02,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1862904723] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:10:02,740 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:10:02,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2022-09-16 11:10:02,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227441258] [2022-09-16 11:10:02,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:10:02,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:10:02,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:10:02,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:10:02,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-09-16 11:10:02,741 INFO L87 Difference]: Start difference. First operand 133420 states and 504146 transitions. Second operand has 6 states, 5 states have (on average 25.2) internal successors, (126), 6 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:10:03,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:10:03,907 INFO L93 Difference]: Finished difference Result 125568 states and 473580 transitions. [2022-09-16 11:10:03,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:10:03,908 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 25.2) internal successors, (126), 6 states have internal predecessors, (126), 0 states have call successors, (0), 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 126 [2022-09-16 11:10:03,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:10:04,875 INFO L225 Difference]: With dead ends: 125568 [2022-09-16 11:10:04,876 INFO L226 Difference]: Without dead ends: 123516 [2022-09-16 11:10:04,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2022-09-16 11:10:04,876 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 179 mSDsluCounter, 615 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 813 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-09-16 11:10:04,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 813 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-09-16 11:10:05,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123516 states. [2022-09-16 11:10:07,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123516 to 114076. [2022-09-16 11:10:07,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114076 states, 114071 states have (on average 3.775736164318714) internal successors, (430702), 114075 states have internal predecessors, (430702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:10:08,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114076 states to 114076 states and 430702 transitions. [2022-09-16 11:10:08,677 INFO L78 Accepts]: Start accepts. Automaton has 114076 states and 430702 transitions. Word has length 126 [2022-09-16 11:10:08,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:10:08,677 INFO L495 AbstractCegarLoop]: Abstraction has 114076 states and 430702 transitions. [2022-09-16 11:10:08,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 25.2) internal successors, (126), 6 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:10:08,677 INFO L276 IsEmpty]: Start isEmpty. Operand 114076 states and 430702 transitions. [2022-09-16 11:10:08,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-09-16 11:10:08,722 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:10:08,722 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:10:08,739 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-09-16 11:10:08,922 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,SelfDestructingSolverStorable12 [2022-09-16 11:10:08,923 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-09-16 11:10:08,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:10:08,923 INFO L85 PathProgramCache]: Analyzing trace with hash -195693933, now seen corresponding path program 2 times [2022-09-16 11:10:08,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:10:08,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987897143] [2022-09-16 11:10:08,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:10:08,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:10:08,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:10:09,014 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:10:09,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:10:09,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987897143] [2022-09-16 11:10:09,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987897143] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:10:09,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [480291427] [2022-09-16 11:10:09,015 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:10:09,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:10:09,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:10:09,016 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:10:09,017 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-09-16 11:10:09,096 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-16 11:10:09,096 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:10:09,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:10:09,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:10:09,610 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-09-16 11:10:09,610 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:10:09,711 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-09-16 11:10:09,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [480291427] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:10:09,711 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:10:09,711 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 15 [2022-09-16 11:10:09,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685778667] [2022-09-16 11:10:09,711 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:10:09,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-09-16 11:10:09,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:10:09,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-09-16 11:10:09,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2022-09-16 11:10:09,713 INFO L87 Difference]: Start difference. First operand 114076 states and 430702 transitions. Second operand has 16 states, 15 states have (on average 15.333333333333334) internal successors, (230), 16 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:10:11,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:10:11,327 INFO L93 Difference]: Finished difference Result 171964 states and 638800 transitions. [2022-09-16 11:10:11,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-09-16 11:10:11,327 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 15.333333333333334) internal successors, (230), 16 states have internal predecessors, (230), 0 states have call successors, (0), 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 138 [2022-09-16 11:10:11,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:10:12,375 INFO L225 Difference]: With dead ends: 171964 [2022-09-16 11:10:12,376 INFO L226 Difference]: Without dead ends: 120869 [2022-09-16 11:10:12,376 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 268 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=333, Invalid=857, Unknown=0, NotChecked=0, Total=1190 [2022-09-16 11:10:12,376 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 1863 mSDsluCounter, 1566 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1863 SdHoareTripleChecker+Valid, 1740 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-09-16 11:10:12,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1863 Valid, 1740 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-09-16 11:10:12,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120869 states. [2022-09-16 11:10:14,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120869 to 20645. [2022-09-16 11:10:14,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20645 states, 20643 states have (on average 3.643559560141452) internal successors, (75214), 20644 states have internal predecessors, (75214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:10:14,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20645 states to 20645 states and 75214 transitions. [2022-09-16 11:10:14,291 INFO L78 Accepts]: Start accepts. Automaton has 20645 states and 75214 transitions. Word has length 138 [2022-09-16 11:10:14,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:10:14,291 INFO L495 AbstractCegarLoop]: Abstraction has 20645 states and 75214 transitions. [2022-09-16 11:10:14,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 15.333333333333334) internal successors, (230), 16 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:10:14,291 INFO L276 IsEmpty]: Start isEmpty. Operand 20645 states and 75214 transitions. [2022-09-16 11:10:14,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-09-16 11:10:14,293 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:10:14,293 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:10:14,311 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-09-16 11:10:14,507 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,SelfDestructingSolverStorable13 [2022-09-16 11:10:14,507 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-09-16 11:10:14,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:10:14,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1400038278, now seen corresponding path program 1 times [2022-09-16 11:10:14,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:10:14,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876523058] [2022-09-16 11:10:14,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:10:14,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:10:14,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:10:14,587 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-09-16 11:10:14,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:10:14,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876523058] [2022-09-16 11:10:14,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876523058] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:10:14,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1031593936] [2022-09-16 11:10:14,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:10:14,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:10:14,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:10:14,589 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:10:14,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-09-16 11:10:14,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:10:14,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:10:14,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:10:14,700 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-09-16 11:10:14,700 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:10:14,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1031593936] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:10:14,701 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:10:14,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 11:10:14,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780353101] [2022-09-16 11:10:14,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:10:14,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:10:14,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:10:14,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:10:14,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:10:14,702 INFO L87 Difference]: Start difference. First operand 20645 states and 75214 transitions. Second operand has 6 states, 5 states have (on average 24.8) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:10:14,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:10:14,845 INFO L93 Difference]: Finished difference Result 19885 states and 72433 transitions. [2022-09-16 11:10:14,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:10:14,847 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 24.8) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 142 [2022-09-16 11:10:14,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:10:14,912 INFO L225 Difference]: With dead ends: 19885 [2022-09-16 11:10:14,912 INFO L226 Difference]: Without dead ends: 19885 [2022-09-16 11:10:14,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 140 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 11:10:14,913 INFO L413 NwaCegarLoop]: 306 mSDtfsCounter, 217 mSDsluCounter, 544 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 834 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-09-16 11:10:14,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 834 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-09-16 11:10:14,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19885 states. [2022-09-16 11:10:15,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19885 to 19885. [2022-09-16 11:10:15,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19885 states, 19884 states have (on average 3.6427781130557233) internal successors, (72433), 19884 states have internal predecessors, (72433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:10:15,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19885 states to 19885 states and 72433 transitions. [2022-09-16 11:10:15,483 INFO L78 Accepts]: Start accepts. Automaton has 19885 states and 72433 transitions. Word has length 142 [2022-09-16 11:10:15,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:10:15,484 INFO L495 AbstractCegarLoop]: Abstraction has 19885 states and 72433 transitions. [2022-09-16 11:10:15,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 24.8) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:10:15,484 INFO L276 IsEmpty]: Start isEmpty. Operand 19885 states and 72433 transitions. [2022-09-16 11:10:15,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-09-16 11:10:15,493 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:10:15,493 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:10:15,510 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-09-16 11:10:15,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-09-16 11:10:15,710 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-09-16 11:10:15,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:10:15,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1825359392, now seen corresponding path program 2 times [2022-09-16 11:10:15,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:10:15,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112365805] [2022-09-16 11:10:15,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:10:15,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:10:15,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:10:15,838 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 12 proven. 20 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-09-16 11:10:15,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:10:15,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112365805] [2022-09-16 11:10:15,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112365805] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:10:15,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769857087] [2022-09-16 11:10:15,839 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:10:15,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:10:15,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:10:15,840 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:10:15,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-09-16 11:10:15,923 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-16 11:10:15,923 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:10:15,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:10:15,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:10:16,072 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-09-16 11:10:16,073 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:10:16,208 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-09-16 11:10:16,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [769857087] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:10:16,209 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:10:16,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 5, 5] total 19 [2022-09-16 11:10:16,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614142448] [2022-09-16 11:10:16,209 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:10:16,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-09-16 11:10:16,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:10:16,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-09-16 11:10:16,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2022-09-16 11:10:16,210 INFO L87 Difference]: Start difference. First operand 19885 states and 72433 transitions. Second operand has 19 states, 19 states have (on average 12.736842105263158) internal successors, (242), 19 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:10:17,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:10:17,209 INFO L93 Difference]: Finished difference Result 34417 states and 124607 transitions. [2022-09-16 11:10:17,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-09-16 11:10:17,210 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 12.736842105263158) internal successors, (242), 19 states have internal predecessors, (242), 0 states have call successors, (0), 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 150 [2022-09-16 11:10:17,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:10:17,210 INFO L225 Difference]: With dead ends: 34417 [2022-09-16 11:10:17,210 INFO L226 Difference]: Without dead ends: 0 [2022-09-16 11:10:17,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 293 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 523 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=457, Invalid=1895, Unknown=0, NotChecked=0, Total=2352 [2022-09-16 11:10:17,211 INFO L413 NwaCegarLoop]: 307 mSDtfsCounter, 1739 mSDsluCounter, 2875 mSDsCounter, 0 mSdLazyCounter, 688 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1739 SdHoareTripleChecker+Valid, 3072 SdHoareTripleChecker+Invalid, 754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-09-16 11:10:17,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1739 Valid, 3072 Invalid, 754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 688 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-09-16 11:10:17,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-09-16 11:10:17,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-09-16 11:10:17,212 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 11:10:17,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-09-16 11:10:17,212 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 150 [2022-09-16 11:10:17,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:10:17,212 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-09-16 11:10:17,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 12.736842105263158) internal successors, (242), 19 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:10:17,212 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-09-16 11:10:17,212 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-09-16 11:10:17,214 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 19 remaining) [2022-09-16 11:10:17,214 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 19 remaining) [2022-09-16 11:10:17,215 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 19 remaining) [2022-09-16 11:10:17,215 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 19 remaining) [2022-09-16 11:10:17,215 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 19 remaining) [2022-09-16 11:10:17,215 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 19 remaining) [2022-09-16 11:10:17,215 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 19 remaining) [2022-09-16 11:10:17,215 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 19 remaining) [2022-09-16 11:10:17,215 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 19 remaining) [2022-09-16 11:10:17,215 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 19 remaining) [2022-09-16 11:10:17,215 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 19 remaining) [2022-09-16 11:10:17,215 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 19 remaining) [2022-09-16 11:10:17,215 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 19 remaining) [2022-09-16 11:10:17,215 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 19 remaining) [2022-09-16 11:10:17,215 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 19 remaining) [2022-09-16 11:10:17,216 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 19 remaining) [2022-09-16 11:10:17,216 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 19 remaining) [2022-09-16 11:10:17,216 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 19 remaining) [2022-09-16 11:10:17,216 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 19 remaining) [2022-09-16 11:10:17,234 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-09-16 11:10:17,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-09-16 11:10:17,419 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:10:17,422 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-09-16 11:10:17,422 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-09-16 11:10:17,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 11:10:17 BasicIcfg [2022-09-16 11:10:17,424 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-09-16 11:10:17,425 INFO L158 Benchmark]: Toolchain (without parser) took 63204.62ms. Allocated memory was 185.6MB in the beginning and 7.9GB in the end (delta: 7.8GB). Free memory was 127.7MB in the beginning and 5.0GB in the end (delta: -4.8GB). Peak memory consumption was 2.9GB. Max. memory is 8.0GB. [2022-09-16 11:10:17,425 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 185.6MB. Free memory is still 144.3MB. There was no memory consumed. Max. memory is 8.0GB. [2022-09-16 11:10:17,425 INFO L158 Benchmark]: CACSL2BoogieTranslator took 204.61ms. Allocated memory is still 185.6MB. Free memory was 127.6MB in the beginning and 159.2MB in the end (delta: -31.6MB). Peak memory consumption was 8.1MB. Max. memory is 8.0GB. [2022-09-16 11:10:17,425 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.29ms. Allocated memory is still 185.6MB. Free memory was 158.7MB in the beginning and 157.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-09-16 11:10:17,425 INFO L158 Benchmark]: Boogie Preprocessor took 26.23ms. Allocated memory is still 185.6MB. Free memory was 157.1MB in the beginning and 155.5MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-09-16 11:10:17,425 INFO L158 Benchmark]: RCFGBuilder took 495.02ms. Allocated memory is still 185.6MB. Free memory was 155.5MB in the beginning and 137.2MB in the end (delta: 18.4MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2022-09-16 11:10:17,425 INFO L158 Benchmark]: TraceAbstraction took 62437.40ms. Allocated memory was 185.6MB in the beginning and 7.9GB in the end (delta: 7.8GB). Free memory was 136.1MB in the beginning and 5.0GB in the end (delta: -4.8GB). Peak memory consumption was 2.9GB. Max. memory is 8.0GB. [2022-09-16 11:10:17,426 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 185.6MB. Free memory is still 144.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 204.61ms. Allocated memory is still 185.6MB. Free memory was 127.6MB in the beginning and 159.2MB in the end (delta: -31.6MB). Peak memory consumption was 8.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 35.29ms. Allocated memory is still 185.6MB. Free memory was 158.7MB in the beginning and 157.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 26.23ms. Allocated memory is still 185.6MB. Free memory was 157.1MB in the beginning and 155.5MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 495.02ms. Allocated memory is still 185.6MB. Free memory was 155.5MB in the beginning and 137.2MB in the end (delta: 18.4MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * TraceAbstraction took 62437.40ms. Allocated memory was 185.6MB in the beginning and 7.9GB in the end (delta: 7.8GB). Free memory was 136.1MB in the beginning and 5.0GB in the end (delta: -4.8GB). Peak memory consumption was 2.9GB. 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: 47]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 47]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 55]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 55]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 63]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 63]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 102]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 102]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 102]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 102]: 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 7 procedures, 263 locations, 19 error locations. Started 1 CEGAR loops. OverallTime: 62.3s, OverallIterations: 16, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.2s, AutomataDifference: 24.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 17463 SdHoareTripleChecker+Valid, 2.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 17463 mSDsluCounter, 19767 SdHoareTripleChecker+Invalid, 2.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 16689 mSDsCounter, 466 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3266 IncrementalHoareTripleChecker+Invalid, 3732 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 466 mSolverCounterUnsat, 3702 mSDtfsCounter, 3266 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2140 GetRequests, 1825 SyntacticMatches, 12 SemanticMatches, 303 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1982 ImplicationChecksByTransitivity, 2.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=133420occurred in iteration=12, InterpolantAutomatonStates: 228, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 29.9s AutomataMinimizationTime, 16 MinimizatonAttempts, 484674 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 2903 NumberOfCodeBlocks, 2777 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 3541 ConstructedInterpolants, 0 QuantifiedInterpolants, 7485 SizeOfPredicates, 46 NumberOfNonLiveVariables, 2569 ConjunctsInSsa, 63 ConjunctsInUnsatCore, 33 InterpolantComputations, 10 PerfectInterpolantSequences, 411/759 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 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-09-16 11:10:17,466 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...