/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-send-receive.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-53ca081-m [2022-09-16 11:12:12,896 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-16 11:12:12,898 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-16 11:12:12,935 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-16 11:12:12,936 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-16 11:12:12,937 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-16 11:12:12,940 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-16 11:12:12,942 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-16 11:12:12,943 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-16 11:12:12,946 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-16 11:12:12,947 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-16 11:12:12,948 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-16 11:12:12,948 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-16 11:12:12,949 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-16 11:12:12,950 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-16 11:12:12,952 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-16 11:12:12,953 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-16 11:12:12,953 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-16 11:12:12,955 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-16 11:12:12,959 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-16 11:12:12,960 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-16 11:12:12,961 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-16 11:12:12,963 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-16 11:12:12,964 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-16 11:12:12,970 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-16 11:12:12,970 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-16 11:12:12,970 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-16 11:12:12,971 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-16 11:12:12,972 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-16 11:12:12,972 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-16 11:12:12,972 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-16 11:12:12,973 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-16 11:12:12,974 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-16 11:12:12,974 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-16 11:12:12,975 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-16 11:12:12,975 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-16 11:12:12,976 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-16 11:12:12,976 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-16 11:12:12,976 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-16 11:12:12,976 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-16 11:12:12,977 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-16 11:12:12,978 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 11:12:13,002 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-16 11:12:13,002 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-16 11:12:13,003 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-09-16 11:12:13,003 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-09-16 11:12:13,004 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-16 11:12:13,004 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-16 11:12:13,004 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-16 11:12:13,004 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-16 11:12:13,004 INFO L138 SettingsManager]: * Use SBE=true [2022-09-16 11:12:13,004 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-16 11:12:13,005 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-16 11:12:13,005 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-16 11:12:13,005 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-16 11:12:13,005 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-16 11:12:13,005 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-16 11:12:13,006 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-16 11:12:13,006 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-16 11:12:13,006 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-16 11:12:13,006 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-16 11:12:13,006 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-16 11:12:13,006 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-16 11:12:13,006 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-16 11:12:13,006 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-16 11:12:13,006 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-16 11:12:13,006 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-16 11:12:13,007 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:12:13,007 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-16 11:12:13,007 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-16 11:12:13,007 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-16 11:12:13,007 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-16 11:12:13,007 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-16 11:12:13,007 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-16 11:12:13,007 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-09-16 11:12:13,008 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of error function in SV-COMP mode -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2022-09-16 11:12:13,233 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-16 11:12:13,256 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-16 11:12:13,258 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-16 11:12:13,259 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-16 11:12:13,259 INFO L275 PluginConnector]: CDTParser initialized [2022-09-16 11:12:13,260 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-send-receive.wvr.c [2022-09-16 11:12:13,320 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/025cbcd55/970140334ec548389289e2bd2f15fb52/FLAGd33d3184b [2022-09-16 11:12:13,707 INFO L306 CDTParser]: Found 1 translation units. [2022-09-16 11:12:13,707 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-send-receive.wvr.c [2022-09-16 11:12:13,713 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/025cbcd55/970140334ec548389289e2bd2f15fb52/FLAGd33d3184b [2022-09-16 11:12:13,726 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/025cbcd55/970140334ec548389289e2bd2f15fb52 [2022-09-16 11:12:13,729 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-16 11:12:13,730 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-16 11:12:13,733 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-16 11:12:13,733 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-16 11:12:13,735 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-16 11:12:13,736 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:12:13" (1/1) ... [2022-09-16 11:12:13,737 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50d96b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:12:13, skipping insertion in model container [2022-09-16 11:12:13,737 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:12:13" (1/1) ... [2022-09-16 11:12:13,742 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-16 11:12:13,762 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-16 11:12:13,996 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-send-receive.wvr.c[3107,3120] [2022-09-16 11:12:14,007 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:12:14,015 INFO L203 MainTranslator]: Completed pre-run [2022-09-16 11:12:14,057 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-send-receive.wvr.c[3107,3120] [2022-09-16 11:12:14,060 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:12:14,071 INFO L208 MainTranslator]: Completed translation [2022-09-16 11:12:14,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:12:14 WrapperNode [2022-09-16 11:12:14,072 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-16 11:12:14,073 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-16 11:12:14,073 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-16 11:12:14,073 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-16 11:12:14,079 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:12:14" (1/1) ... [2022-09-16 11:12:14,095 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:12:14" (1/1) ... [2022-09-16 11:12:14,122 INFO L138 Inliner]: procedures = 25, calls = 52, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 171 [2022-09-16 11:12:14,123 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-16 11:12:14,124 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-16 11:12:14,124 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-16 11:12:14,124 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-16 11:12:14,129 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:12:14" (1/1) ... [2022-09-16 11:12:14,130 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:12:14" (1/1) ... [2022-09-16 11:12:14,141 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:12:14" (1/1) ... [2022-09-16 11:12:14,141 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:12:14" (1/1) ... [2022-09-16 11:12:14,151 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:12:14" (1/1) ... [2022-09-16 11:12:14,154 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:12:14" (1/1) ... [2022-09-16 11:12:14,155 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:12:14" (1/1) ... [2022-09-16 11:12:14,157 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-16 11:12:14,158 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-16 11:12:14,158 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-16 11:12:14,158 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-16 11:12:14,160 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:12:14" (1/1) ... [2022-09-16 11:12:14,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:12:14,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:12:14,197 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 11:12:14,214 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 11:12:14,227 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-16 11:12:14,228 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-16 11:12:14,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-16 11:12:14,228 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-16 11:12:14,228 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-16 11:12:14,228 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-16 11:12:14,228 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-16 11:12:14,228 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-16 11:12:14,228 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-09-16 11:12:14,228 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-09-16 11:12:14,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-16 11:12:14,228 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-09-16 11:12:14,228 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-09-16 11:12:14,229 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-09-16 11:12:14,229 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-16 11:12:14,229 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-16 11:12:14,229 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-16 11:12:14,230 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 11:12:14,321 INFO L234 CfgBuilder]: Building ICFG [2022-09-16 11:12:14,323 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-16 11:12:14,626 INFO L275 CfgBuilder]: Performing block encoding [2022-09-16 11:12:14,725 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-16 11:12:14,726 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-09-16 11:12:14,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:12:14 BoogieIcfgContainer [2022-09-16 11:12:14,727 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-16 11:12:14,729 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-16 11:12:14,729 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-16 11:12:14,731 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-16 11:12:14,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 11:12:13" (1/3) ... [2022-09-16 11:12:14,732 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cd4aed8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:12:14, skipping insertion in model container [2022-09-16 11:12:14,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:12:14" (2/3) ... [2022-09-16 11:12:14,732 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cd4aed8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:12:14, skipping insertion in model container [2022-09-16 11:12:14,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:12:14" (3/3) ... [2022-09-16 11:12:14,733 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-send-receive.wvr.c [2022-09-16 11:12:14,739 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-09-16 11:12:14,745 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-16 11:12:14,746 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-09-16 11:12:14,746 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-16 11:12:14,804 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-09-16 11:12:14,830 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 153 places, 153 transitions, 330 flow [2022-09-16 11:12:15,016 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 5546 states, 5519 states have (on average 3.510418554085885) internal successors, (19374), 5545 states have internal predecessors, (19374), 0 states have call successors, (0), 0 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 11:12:15,032 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 11:12:15,039 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;@2e68aaaf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 11:12:15,040 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2022-09-16 11:12:15,057 INFO L276 IsEmpty]: Start isEmpty. Operand has 5546 states, 5519 states have (on average 3.510418554085885) internal successors, (19374), 5545 states have internal predecessors, (19374), 0 states have call successors, (0), 0 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 11:12:15,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-09-16 11:12:15,063 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:12:15,063 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] [2022-09-16 11:12:15,064 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-09-16 11:12:15,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:12:15,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1699002523, now seen corresponding path program 1 times [2022-09-16 11:12:15,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:12:15,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204663791] [2022-09-16 11:12:15,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:12:15,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:12:15,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:12:15,262 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 11:12:15,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:12:15,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204663791] [2022-09-16 11:12:15,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204663791] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:12:15,263 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:12:15,263 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:12:15,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255160215] [2022-09-16 11:12:15,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:12:15,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:12:15,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:12:15,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:12:15,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:12:15,314 INFO L87 Difference]: Start difference. First operand has 5546 states, 5519 states have (on average 3.510418554085885) internal successors, (19374), 5545 states have internal predecessors, (19374), 0 states have call successors, (0), 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 18.666666666666668) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 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 11:12:15,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:12:15,558 INFO L93 Difference]: Finished difference Result 10058 states and 33584 transitions. [2022-09-16 11:12:15,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:12:15,561 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 18.666666666666668) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2022-09-16 11:12:15,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:12:15,644 INFO L225 Difference]: With dead ends: 10058 [2022-09-16 11:12:15,644 INFO L226 Difference]: Without dead ends: 9792 [2022-09-16 11:12:15,645 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 11:12:15,649 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 69 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-09-16 11:12:15,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 314 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-09-16 11:12:15,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9792 states. [2022-09-16 11:12:15,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9792 to 4929. [2022-09-16 11:12:15,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4929 states, 4905 states have (on average 3.346992864424057) internal successors, (16417), 4928 states have internal predecessors, (16417), 0 states have call successors, (0), 0 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 11:12:16,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4929 states to 4929 states and 16417 transitions. [2022-09-16 11:12:16,043 INFO L78 Accepts]: Start accepts. Automaton has 4929 states and 16417 transitions. Word has length 56 [2022-09-16 11:12:16,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:12:16,043 INFO L495 AbstractCegarLoop]: Abstraction has 4929 states and 16417 transitions. [2022-09-16 11:12:16,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 18.666666666666668) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 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 11:12:16,043 INFO L276 IsEmpty]: Start isEmpty. Operand 4929 states and 16417 transitions. [2022-09-16 11:12:16,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-09-16 11:12:16,045 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:12:16,045 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] [2022-09-16 11:12:16,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-16 11:12:16,045 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-09-16 11:12:16,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:12:16,046 INFO L85 PathProgramCache]: Analyzing trace with hash -1738197979, now seen corresponding path program 1 times [2022-09-16 11:12:16,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:12:16,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685026997] [2022-09-16 11:12:16,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:12:16,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:12:16,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:12:16,240 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 11:12:16,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:12:16,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685026997] [2022-09-16 11:12:16,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685026997] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:12:16,240 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:12:16,241 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-16 11:12:16,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943544251] [2022-09-16 11:12:16,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:12:16,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 11:12:16,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:12:16,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 11:12:16,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:12:16,243 INFO L87 Difference]: Start difference. First operand 4929 states and 16417 transitions. Second operand has 3 states, 2 states have (on average 31.5) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:12:16,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:12:16,349 INFO L93 Difference]: Finished difference Result 6721 states and 22243 transitions. [2022-09-16 11:12:16,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 11:12:16,350 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 31.5) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-09-16 11:12:16,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:12:16,390 INFO L225 Difference]: With dead ends: 6721 [2022-09-16 11:12:16,391 INFO L226 Difference]: Without dead ends: 6457 [2022-09-16 11:12:16,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:12:16,396 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 65 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-09-16 11:12:16,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 155 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-09-16 11:12:16,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6457 states. [2022-09-16 11:12:16,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6457 to 5521. [2022-09-16 11:12:16,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5521 states, 5493 states have (on average 3.3520844711450937) internal successors, (18413), 5520 states have internal predecessors, (18413), 0 states have call successors, (0), 0 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 11:12:16,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5521 states to 5521 states and 18413 transitions. [2022-09-16 11:12:16,588 INFO L78 Accepts]: Start accepts. Automaton has 5521 states and 18413 transitions. Word has length 63 [2022-09-16 11:12:16,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:12:16,589 INFO L495 AbstractCegarLoop]: Abstraction has 5521 states and 18413 transitions. [2022-09-16 11:12:16,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 31.5) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:12:16,590 INFO L276 IsEmpty]: Start isEmpty. Operand 5521 states and 18413 transitions. [2022-09-16 11:12:16,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-09-16 11:12:16,592 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:12:16,592 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] [2022-09-16 11:12:16,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-16 11:12:16,592 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-09-16 11:12:16,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:12:16,593 INFO L85 PathProgramCache]: Analyzing trace with hash 806921437, now seen corresponding path program 1 times [2022-09-16 11:12:16,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:12:16,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960220592] [2022-09-16 11:12:16,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:12:16,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:12:16,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:12:16,732 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 11:12:16,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:12:16,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960220592] [2022-09-16 11:12:16,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960220592] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:12:16,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [752585990] [2022-09-16 11:12:16,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:12:16,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:12:16,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:12:16,735 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 11:12:16,736 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 11:12:16,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:12:16,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:12:16,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:12:16,873 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 11:12:16,873 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:12:16,926 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 11:12:16,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [752585990] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:12:16,927 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:12:16,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-09-16 11:12:16,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582117546] [2022-09-16 11:12:16,930 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:12:16,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-16 11:12:16,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:12:16,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-16 11:12:16,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-09-16 11:12:16,935 INFO L87 Difference]: Start difference. First operand 5521 states and 18413 transitions. Second operand has 12 states, 11 states have (on average 8.181818181818182) internal successors, (90), 12 states have internal predecessors, (90), 0 states have call successors, (0), 0 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 11:12:17,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:12:17,337 INFO L93 Difference]: Finished difference Result 27364 states and 91819 transitions. [2022-09-16 11:12:17,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-16 11:12:17,338 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.181818181818182) internal successors, (90), 12 states have internal predecessors, (90), 0 states have call successors, (0), 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 65 [2022-09-16 11:12:17,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:12:17,528 INFO L225 Difference]: With dead ends: 27364 [2022-09-16 11:12:17,528 INFO L226 Difference]: Without dead ends: 27364 [2022-09-16 11:12:17,528 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 123 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 11:12:17,529 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 284 mSDsluCounter, 869 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 860 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-09-16 11:12:17,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [284 Valid, 860 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-09-16 11:12:17,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27364 states. [2022-09-16 11:12:17,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27364 to 5547. [2022-09-16 11:12:17,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5547 states, 5519 states have (on average 3.341909766262004) internal successors, (18444), 5546 states have internal predecessors, (18444), 0 states have call successors, (0), 0 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 11:12:17,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5547 states to 5547 states and 18444 transitions. [2022-09-16 11:12:17,930 INFO L78 Accepts]: Start accepts. Automaton has 5547 states and 18444 transitions. Word has length 65 [2022-09-16 11:12:17,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:12:17,930 INFO L495 AbstractCegarLoop]: Abstraction has 5547 states and 18444 transitions. [2022-09-16 11:12:17,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.181818181818182) internal successors, (90), 12 states have internal predecessors, (90), 0 states have call successors, (0), 0 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 11:12:17,931 INFO L276 IsEmpty]: Start isEmpty. Operand 5547 states and 18444 transitions. [2022-09-16 11:12:17,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-09-16 11:12:17,937 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:12:17,937 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] [2022-09-16 11:12:17,955 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-09-16 11:12:18,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:12:18,153 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-09-16 11:12:18,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:12:18,154 INFO L85 PathProgramCache]: Analyzing trace with hash -755238765, now seen corresponding path program 1 times [2022-09-16 11:12:18,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:12:18,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854905854] [2022-09-16 11:12:18,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:12:18,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:12:18,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:12:18,206 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 11:12:18,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:12:18,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854905854] [2022-09-16 11:12:18,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854905854] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:12:18,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [902600155] [2022-09-16 11:12:18,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:12:18,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:12:18,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:12:18,209 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 11:12:18,210 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 11:12:18,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:12:18,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:12:18,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:12:18,307 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 11:12:18,308 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:12:18,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [902600155] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:12:18,308 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:12:18,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 11:12:18,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408191130] [2022-09-16 11:12:18,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:12:18,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:12:18,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:12:18,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:12:18,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:12:18,309 INFO L87 Difference]: Start difference. First operand 5547 states and 18444 transitions. Second operand has 6 states, 5 states have (on average 13.2) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 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 11:12:18,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:12:18,515 INFO L93 Difference]: Finished difference Result 10999 states and 36784 transitions. [2022-09-16 11:12:18,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:12:18,516 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.2) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2022-09-16 11:12:18,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:12:18,547 INFO L225 Difference]: With dead ends: 10999 [2022-09-16 11:12:18,548 INFO L226 Difference]: Without dead ends: 10999 [2022-09-16 11:12:18,548 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 64 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 11:12:18,549 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 139 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 555 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-09-16 11:12:18,549 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 555 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-09-16 11:12:18,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10999 states. [2022-09-16 11:12:18,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10999 to 5546. [2022-09-16 11:12:18,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5546 states, 5519 states have (on average 3.341366189527088) internal successors, (18441), 5545 states have internal predecessors, (18441), 0 states have call successors, (0), 0 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 11:12:18,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5546 states to 5546 states and 18441 transitions. [2022-09-16 11:12:18,717 INFO L78 Accepts]: Start accepts. Automaton has 5546 states and 18441 transitions. Word has length 66 [2022-09-16 11:12:18,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:12:18,718 INFO L495 AbstractCegarLoop]: Abstraction has 5546 states and 18441 transitions. [2022-09-16 11:12:18,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.2) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 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 11:12:18,718 INFO L276 IsEmpty]: Start isEmpty. Operand 5546 states and 18441 transitions. [2022-09-16 11:12:18,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-09-16 11:12:18,720 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:12:18,720 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] [2022-09-16 11:12:18,747 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 11:12:18,949 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,SelfDestructingSolverStorable3 [2022-09-16 11:12:18,950 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-09-16 11:12:18,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:12:18,950 INFO L85 PathProgramCache]: Analyzing trace with hash -446511287, now seen corresponding path program 1 times [2022-09-16 11:12:18,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:12:18,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090055918] [2022-09-16 11:12:18,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:12:18,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:12:18,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:12:19,040 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 11:12:19,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:12:19,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090055918] [2022-09-16 11:12:19,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090055918] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:12:19,041 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:12:19,041 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-09-16 11:12:19,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964808872] [2022-09-16 11:12:19,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:12:19,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-09-16 11:12:19,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:12:19,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-09-16 11:12:19,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-09-16 11:12:19,042 INFO L87 Difference]: Start difference. First operand 5546 states and 18441 transitions. Second operand has 9 states, 8 states have (on average 9.625) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 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 11:12:19,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:12:19,293 INFO L93 Difference]: Finished difference Result 8819 states and 29158 transitions. [2022-09-16 11:12:19,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-09-16 11:12:19,294 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.625) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2022-09-16 11:12:19,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:12:19,319 INFO L225 Difference]: With dead ends: 8819 [2022-09-16 11:12:19,319 INFO L226 Difference]: Without dead ends: 8555 [2022-09-16 11:12:19,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272 [2022-09-16 11:12:19,320 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 448 mSDsluCounter, 681 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 448 SdHoareTripleChecker+Valid, 794 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-09-16 11:12:19,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [448 Valid, 794 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-09-16 11:12:19,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8555 states. [2022-09-16 11:12:19,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8555 to 7607. [2022-09-16 11:12:19,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7607 states, 7580 states have (on average 3.3401055408970977) internal successors, (25318), 7606 states have internal predecessors, (25318), 0 states have call successors, (0), 0 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 11:12:19,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7607 states to 7607 states and 25318 transitions. [2022-09-16 11:12:19,528 INFO L78 Accepts]: Start accepts. Automaton has 7607 states and 25318 transitions. Word has length 77 [2022-09-16 11:12:19,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:12:19,529 INFO L495 AbstractCegarLoop]: Abstraction has 7607 states and 25318 transitions. [2022-09-16 11:12:19,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.625) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 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 11:12:19,530 INFO L276 IsEmpty]: Start isEmpty. Operand 7607 states and 25318 transitions. [2022-09-16 11:12:19,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-09-16 11:12:19,531 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:12:19,531 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] [2022-09-16 11:12:19,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-16 11:12:19,532 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-09-16 11:12:19,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:12:19,532 INFO L85 PathProgramCache]: Analyzing trace with hash -446511286, now seen corresponding path program 1 times [2022-09-16 11:12:19,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:12:19,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502306741] [2022-09-16 11:12:19,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:12:19,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:12:19,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:12:19,594 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 11:12:19,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:12:19,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502306741] [2022-09-16 11:12:19,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502306741] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:12:19,594 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:12:19,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-09-16 11:12:19,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60042123] [2022-09-16 11:12:19,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:12:19,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-16 11:12:19,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:12:19,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-16 11:12:19,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-09-16 11:12:19,595 INFO L87 Difference]: Start difference. First operand 7607 states and 25318 transitions. Second operand has 5 states, 4 states have (on average 19.25) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 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 11:12:19,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:12:19,657 INFO L93 Difference]: Finished difference Result 7143 states and 23528 transitions. [2022-09-16 11:12:19,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:12:19,657 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 19.25) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2022-09-16 11:12:19,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:12:19,669 INFO L225 Difference]: With dead ends: 7143 [2022-09-16 11:12:19,669 INFO L226 Difference]: Without dead ends: 5082 [2022-09-16 11:12:19,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-09-16 11:12:19,671 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 164 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-09-16 11:12:19,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 230 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-09-16 11:12:19,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5082 states. [2022-09-16 11:12:19,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5082 to 5082. [2022-09-16 11:12:19,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5082 states, 5065 states have (on average 3.344126357354393) internal successors, (16938), 5081 states have internal predecessors, (16938), 0 states have call successors, (0), 0 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 11:12:19,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5082 states to 5082 states and 16938 transitions. [2022-09-16 11:12:19,815 INFO L78 Accepts]: Start accepts. Automaton has 5082 states and 16938 transitions. Word has length 77 [2022-09-16 11:12:19,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:12:19,815 INFO L495 AbstractCegarLoop]: Abstraction has 5082 states and 16938 transitions. [2022-09-16 11:12:19,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 19.25) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 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 11:12:19,815 INFO L276 IsEmpty]: Start isEmpty. Operand 5082 states and 16938 transitions. [2022-09-16 11:12:19,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-09-16 11:12:19,817 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:12:19,817 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] [2022-09-16 11:12:19,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-09-16 11:12:19,817 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-09-16 11:12:19,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:12:19,818 INFO L85 PathProgramCache]: Analyzing trace with hash 586446919, now seen corresponding path program 1 times [2022-09-16 11:12:19,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:12:19,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918561329] [2022-09-16 11:12:19,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:12:19,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:12:19,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:12:19,948 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:12:19,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:12:19,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918561329] [2022-09-16 11:12:19,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918561329] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:12:19,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2055920354] [2022-09-16 11:12:19,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:12:19,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:12:19,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:12:19,950 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 11:12:19,951 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 11:12:20,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:12:20,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 9 conjunts are in the unsatisfiable core [2022-09-16 11:12:20,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:12:20,237 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:12:20,237 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:12:20,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2055920354] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:12:20,237 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:12:20,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 15 [2022-09-16 11:12:20,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363206487] [2022-09-16 11:12:20,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:12:20,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-16 11:12:20,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:12:20,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-16 11:12:20,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2022-09-16 11:12:20,239 INFO L87 Difference]: Start difference. First operand 5082 states and 16938 transitions. Second operand has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 7 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 11:12:20,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:12:20,411 INFO L93 Difference]: Finished difference Result 4134 states and 13742 transitions. [2022-09-16 11:12:20,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-16 11:12:20,412 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 7 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 86 [2022-09-16 11:12:20,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:12:20,419 INFO L225 Difference]: With dead ends: 4134 [2022-09-16 11:12:20,419 INFO L226 Difference]: Without dead ends: 3024 [2022-09-16 11:12:20,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2022-09-16 11:12:20,420 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 146 mSDsluCounter, 533 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 668 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-09-16 11:12:20,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 668 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-09-16 11:12:20,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3024 states. [2022-09-16 11:12:20,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3024 to 3024. [2022-09-16 11:12:20,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3024 states, 3019 states have (on average 3.258694932096721) internal successors, (9838), 3023 states have internal predecessors, (9838), 0 states have call successors, (0), 0 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 11:12:20,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3024 states to 3024 states and 9838 transitions. [2022-09-16 11:12:20,473 INFO L78 Accepts]: Start accepts. Automaton has 3024 states and 9838 transitions. Word has length 86 [2022-09-16 11:12:20,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:12:20,474 INFO L495 AbstractCegarLoop]: Abstraction has 3024 states and 9838 transitions. [2022-09-16 11:12:20,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 7 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 11:12:20,474 INFO L276 IsEmpty]: Start isEmpty. Operand 3024 states and 9838 transitions. [2022-09-16 11:12:20,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-09-16 11:12:20,475 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:12:20,475 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] [2022-09-16 11:12:20,497 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 11:12:20,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:12:20,696 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-09-16 11:12:20,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:12:20,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1152002908, now seen corresponding path program 1 times [2022-09-16 11:12:20,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:12:20,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959809957] [2022-09-16 11:12:20,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:12:20,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:12:20,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:12:20,771 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:12:20,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:12:20,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959809957] [2022-09-16 11:12:20,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959809957] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:12:20,772 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:12:20,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-09-16 11:12:20,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022891171] [2022-09-16 11:12:20,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:12:20,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-16 11:12:20,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:12:20,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-16 11:12:20,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-09-16 11:12:20,774 INFO L87 Difference]: Start difference. First operand 3024 states and 9838 transitions. Second operand has 5 states, 4 states have (on average 22.25) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 0 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 11:12:20,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:12:20,834 INFO L93 Difference]: Finished difference Result 5488 states and 18280 transitions. [2022-09-16 11:12:20,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:12:20,835 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 22.25) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 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 89 [2022-09-16 11:12:20,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:12:20,847 INFO L225 Difference]: With dead ends: 5488 [2022-09-16 11:12:20,847 INFO L226 Difference]: Without dead ends: 5488 [2022-09-16 11:12:20,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 1 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 11:12:20,848 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 137 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-09-16 11:12:20,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 298 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-09-16 11:12:20,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5488 states. [2022-09-16 11:12:20,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5488 to 4080. [2022-09-16 11:12:20,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4080 states, 4075 states have (on average 3.3020858895705523) internal successors, (13456), 4079 states have internal predecessors, (13456), 0 states have call successors, (0), 0 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 11:12:20,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4080 states to 4080 states and 13456 transitions. [2022-09-16 11:12:20,945 INFO L78 Accepts]: Start accepts. Automaton has 4080 states and 13456 transitions. Word has length 89 [2022-09-16 11:12:20,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:12:20,945 INFO L495 AbstractCegarLoop]: Abstraction has 4080 states and 13456 transitions. [2022-09-16 11:12:20,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 22.25) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 0 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 11:12:20,945 INFO L276 IsEmpty]: Start isEmpty. Operand 4080 states and 13456 transitions. [2022-09-16 11:12:20,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-09-16 11:12:20,947 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:12:20,947 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] [2022-09-16 11:12:20,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-09-16 11:12:20,947 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-09-16 11:12:20,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:12:20,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1152001854, now seen corresponding path program 1 times [2022-09-16 11:12:20,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:12:20,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658877952] [2022-09-16 11:12:20,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:12:20,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:12:20,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:12:21,001 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:12:21,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:12:21,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658877952] [2022-09-16 11:12:21,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658877952] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:12:21,002 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:12:21,002 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:12:21,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024843789] [2022-09-16 11:12:21,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:12:21,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 11:12:21,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:12:21,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 11:12:21,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:12:21,004 INFO L87 Difference]: Start difference. First operand 4080 states and 13456 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 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 11:12:21,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:12:21,036 INFO L93 Difference]: Finished difference Result 4127 states and 13596 transitions. [2022-09-16 11:12:21,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 11:12:21,037 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 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 89 [2022-09-16 11:12:21,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:12:21,048 INFO L225 Difference]: With dead ends: 4127 [2022-09-16 11:12:21,049 INFO L226 Difference]: Without dead ends: 4127 [2022-09-16 11:12:21,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:12:21,051 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 20 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-09-16 11:12:21,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 216 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-09-16 11:12:21,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4127 states. [2022-09-16 11:12:21,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4127 to 3934. [2022-09-16 11:12:21,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3934 states, 3929 states have (on average 3.2947314838381265) internal successors, (12945), 3933 states have internal predecessors, (12945), 0 states have call successors, (0), 0 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 11:12:21,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3934 states to 3934 states and 12945 transitions. [2022-09-16 11:12:21,184 INFO L78 Accepts]: Start accepts. Automaton has 3934 states and 12945 transitions. Word has length 89 [2022-09-16 11:12:21,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:12:21,185 INFO L495 AbstractCegarLoop]: Abstraction has 3934 states and 12945 transitions. [2022-09-16 11:12:21,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 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 11:12:21,185 INFO L276 IsEmpty]: Start isEmpty. Operand 3934 states and 12945 transitions. [2022-09-16 11:12:21,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-09-16 11:12:21,187 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:12:21,187 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:12:21,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-09-16 11:12:21,187 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-09-16 11:12:21,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:12:21,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1765615728, now seen corresponding path program 1 times [2022-09-16 11:12:21,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:12:21,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968988201] [2022-09-16 11:12:21,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:12:21,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:12:21,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:12:21,261 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:12:21,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:12:21,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968988201] [2022-09-16 11:12:21,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968988201] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:12:21,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [354816121] [2022-09-16 11:12:21,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:12:21,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:12:21,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:12:21,263 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 11:12:21,264 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 11:12:21,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:12:21,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 8 conjunts are in the unsatisfiable core [2022-09-16 11:12:21,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:12:21,442 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-16 11:12:21,442 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:12:21,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [354816121] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:12:21,442 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:12:21,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2022-09-16 11:12:21,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836120760] [2022-09-16 11:12:21,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:12:21,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:12:21,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:12:21,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:12:21,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-09-16 11:12:21,444 INFO L87 Difference]: Start difference. First operand 3934 states and 12945 transitions. Second operand has 4 states, 3 states have (on average 30.333333333333332) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 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 11:12:21,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:12:21,504 INFO L93 Difference]: Finished difference Result 8078 states and 26820 transitions. [2022-09-16 11:12:21,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:12:21,505 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 30.333333333333332) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 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 92 [2022-09-16 11:12:21,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:12:21,525 INFO L225 Difference]: With dead ends: 8078 [2022-09-16 11:12:21,526 INFO L226 Difference]: Without dead ends: 7610 [2022-09-16 11:12:21,526 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 92 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 11:12:21,526 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 125 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-09-16 11:12:21,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 191 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-09-16 11:12:21,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7610 states. [2022-09-16 11:12:21,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7610 to 6906. [2022-09-16 11:12:21,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6906 states, 6901 states have (on average 3.4047239530502824) internal successors, (23496), 6905 states have internal predecessors, (23496), 0 states have call successors, (0), 0 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 11:12:21,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6906 states to 6906 states and 23496 transitions. [2022-09-16 11:12:21,685 INFO L78 Accepts]: Start accepts. Automaton has 6906 states and 23496 transitions. Word has length 92 [2022-09-16 11:12:21,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:12:21,685 INFO L495 AbstractCegarLoop]: Abstraction has 6906 states and 23496 transitions. [2022-09-16 11:12:21,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 30.333333333333332) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 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 11:12:21,686 INFO L276 IsEmpty]: Start isEmpty. Operand 6906 states and 23496 transitions. [2022-09-16 11:12:21,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-09-16 11:12:21,688 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:12:21,688 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] [2022-09-16 11:12:21,717 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 11:12:21,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:12:21,907 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-09-16 11:12:21,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:12:21,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1475869979, now seen corresponding path program 2 times [2022-09-16 11:12:21,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:12:21,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874429952] [2022-09-16 11:12:21,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:12:21,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:12:21,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:12:21,983 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 11:12:21,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:12:21,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874429952] [2022-09-16 11:12:21,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874429952] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:12:21,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [990496218] [2022-09-16 11:12:21,983 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:12:21,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:12:21,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:12:21,985 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 11:12:21,986 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 11:12:22,049 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-16 11:12:22,049 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:12:22,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 7 conjunts are in the unsatisfiable core [2022-09-16 11:12:22,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:12:22,187 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 11:12:22,187 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:12:22,308 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 11:12:22,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [990496218] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:12:22,308 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:12:22,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-09-16 11:12:22,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383990405] [2022-09-16 11:12:22,311 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:12:22,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-09-16 11:12:22,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:12:22,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-09-16 11:12:22,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-09-16 11:12:22,312 INFO L87 Difference]: Start difference. First operand 6906 states and 23496 transitions. Second operand has 18 states, 17 states have (on average 8.0) internal successors, (136), 18 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 11:12:22,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:12:22,979 INFO L93 Difference]: Finished difference Result 40983 states and 140505 transitions. [2022-09-16 11:12:22,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-09-16 11:12:22,980 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 8.0) internal successors, (136), 18 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 92 [2022-09-16 11:12:22,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:12:23,130 INFO L225 Difference]: With dead ends: 40983 [2022-09-16 11:12:23,130 INFO L226 Difference]: Without dead ends: 40983 [2022-09-16 11:12:23,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 173 SyntacticMatches, 5 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=419, Invalid=1063, Unknown=0, NotChecked=0, Total=1482 [2022-09-16 11:12:23,131 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 1513 mSDsluCounter, 965 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1513 SdHoareTripleChecker+Valid, 1000 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-09-16 11:12:23,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1513 Valid, 1000 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-09-16 11:12:23,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40983 states. [2022-09-16 11:12:23,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40983 to 6873. [2022-09-16 11:12:23,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6873 states, 6869 states have (on average 3.4153443004804194) internal successors, (23460), 6872 states have internal predecessors, (23460), 0 states have call successors, (0), 0 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 11:12:23,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6873 states to 6873 states and 23460 transitions. [2022-09-16 11:12:23,656 INFO L78 Accepts]: Start accepts. Automaton has 6873 states and 23460 transitions. Word has length 92 [2022-09-16 11:12:23,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:12:23,657 INFO L495 AbstractCegarLoop]: Abstraction has 6873 states and 23460 transitions. [2022-09-16 11:12:23,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 8.0) internal successors, (136), 18 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 11:12:23,657 INFO L276 IsEmpty]: Start isEmpty. Operand 6873 states and 23460 transitions. [2022-09-16 11:12:23,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-09-16 11:12:23,659 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:12:23,659 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] [2022-09-16 11:12:23,676 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 11:12:23,860 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,SelfDestructingSolverStorable10 [2022-09-16 11:12:23,860 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-09-16 11:12:23,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:12:23,861 INFO L85 PathProgramCache]: Analyzing trace with hash -2031641336, now seen corresponding path program 1 times [2022-09-16 11:12:23,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:12:23,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737687182] [2022-09-16 11:12:23,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:12:23,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:12:23,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:12:24,629 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:12:24,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:12:24,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737687182] [2022-09-16 11:12:24,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737687182] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:12:24,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1564686106] [2022-09-16 11:12:24,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:12:24,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:12:24,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:12:24,631 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 11:12:24,632 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 11:12:24,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:12:24,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 44 conjunts are in the unsatisfiable core [2022-09-16 11:12:24,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:12:25,311 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-09-16 11:12:25,719 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-16 11:12:25,829 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-16 11:12:26,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:12:26,182 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-09-16 11:12:26,227 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:12:26,227 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:12:26,259 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_249 (Array Int Int))) (< (+ c_~sum~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_249) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4)))) 2147483648)) is different from false [2022-09-16 11:12:27,423 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:12:27,423 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 53 [2022-09-16 11:12:27,435 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:12:27,436 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 824 treesize of output 788 [2022-09-16 11:12:27,452 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:12:27,452 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 458 treesize of output 434 [2022-09-16 11:12:27,464 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 614 treesize of output 518 [2022-09-16 11:12:27,476 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:12:27,476 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 644 treesize of output 584 [2022-09-16 11:12:28,648 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:12:28,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1564686106] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:12:28,649 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:12:28,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 24, 23] total 66 [2022-09-16 11:12:28,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295173623] [2022-09-16 11:12:28,649 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:12:28,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2022-09-16 11:12:28,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:12:28,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2022-09-16 11:12:28,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=335, Invalid=3945, Unknown=14, NotChecked=128, Total=4422 [2022-09-16 11:12:28,651 INFO L87 Difference]: Start difference. First operand 6873 states and 23460 transitions. Second operand has 67 states, 66 states have (on average 3.9393939393939394) internal successors, (260), 67 states have internal predecessors, (260), 0 states have call successors, (0), 0 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 11:12:41,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:12:41,457 INFO L93 Difference]: Finished difference Result 22737 states and 79790 transitions. [2022-09-16 11:12:41,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-09-16 11:12:41,476 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 66 states have (on average 3.9393939393939394) internal successors, (260), 67 states have internal predecessors, (260), 0 states have call successors, (0), 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 94 [2022-09-16 11:12:41,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:12:41,550 INFO L225 Difference]: With dead ends: 22737 [2022-09-16 11:12:41,551 INFO L226 Difference]: Without dead ends: 22539 [2022-09-16 11:12:41,554 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 144 SyntacticMatches, 9 SemanticMatches, 132 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 5290 ImplicationChecksByTransitivity, 13.5s TimeCoverageRelationStatistics Valid=2706, Invalid=14770, Unknown=84, NotChecked=262, Total=17822 [2022-09-16 11:12:41,554 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 5579 mSDsluCounter, 8067 mSDsCounter, 0 mSdLazyCounter, 1568 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5579 SdHoareTripleChecker+Valid, 7538 SdHoareTripleChecker+Invalid, 5699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4029 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-09-16 11:12:41,554 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5579 Valid, 7538 Invalid, 5699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1568 Invalid, 0 Unknown, 4029 Unchecked, 0.9s Time] [2022-09-16 11:12:41,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22539 states. [2022-09-16 11:12:41,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22539 to 12579. [2022-09-16 11:12:41,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12579 states, 12575 states have (on average 3.47324055666004) internal successors, (43676), 12578 states have internal predecessors, (43676), 0 states have call successors, (0), 0 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 11:12:41,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12579 states to 12579 states and 43676 transitions. [2022-09-16 11:12:41,894 INFO L78 Accepts]: Start accepts. Automaton has 12579 states and 43676 transitions. Word has length 94 [2022-09-16 11:12:41,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:12:41,894 INFO L495 AbstractCegarLoop]: Abstraction has 12579 states and 43676 transitions. [2022-09-16 11:12:41,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 66 states have (on average 3.9393939393939394) internal successors, (260), 67 states have internal predecessors, (260), 0 states have call successors, (0), 0 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 11:12:41,894 INFO L276 IsEmpty]: Start isEmpty. Operand 12579 states and 43676 transitions. [2022-09-16 11:12:41,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-09-16 11:12:41,900 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:12:41,900 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-09-16 11:12:41,933 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 11:12:42,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:12:42,111 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-09-16 11:12:42,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:12:42,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1373003945, now seen corresponding path program 1 times [2022-09-16 11:12:42,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:12:42,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759417743] [2022-09-16 11:12:42,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:12:42,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:12:42,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:12:42,254 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:12:42,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:12:42,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759417743] [2022-09-16 11:12:42,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759417743] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:12:42,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [161414306] [2022-09-16 11:12:42,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:12:42,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:12:42,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:12:42,256 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 11:12:42,257 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 11:12:42,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:12:42,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 44 conjunts are in the unsatisfiable core [2022-09-16 11:12:42,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:12:42,751 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-09-16 11:12:43,080 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-16 11:12:43,174 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-16 11:12:43,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:12:43,340 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-09-16 11:12:43,366 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:12:43,367 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:12:44,149 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:12:44,149 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 54 [2022-09-16 11:12:44,157 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:12:44,157 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 418 treesize of output 406 [2022-09-16 11:12:44,167 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:12:44,167 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 394 treesize of output 370 [2022-09-16 11:12:44,178 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:12:44,178 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 211 treesize of output 205 [2022-09-16 11:12:44,184 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 294 treesize of output 246 [2022-09-16 11:12:45,066 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:12:45,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [161414306] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:12:45,067 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:12:45,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 21, 20] total 50 [2022-09-16 11:12:45,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205599073] [2022-09-16 11:12:45,067 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:12:45,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-09-16 11:12:45,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:12:45,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-09-16 11:12:45,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=2262, Unknown=17, NotChecked=0, Total=2550 [2022-09-16 11:12:45,069 INFO L87 Difference]: Start difference. First operand 12579 states and 43676 transitions. Second operand has 51 states, 50 states have (on average 5.5) internal successors, (275), 51 states have internal predecessors, (275), 0 states have call successors, (0), 0 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 11:12:47,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:12:47,814 INFO L93 Difference]: Finished difference Result 33905 states and 116144 transitions. [2022-09-16 11:12:47,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-09-16 11:12:47,814 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 50 states have (on average 5.5) internal successors, (275), 51 states have internal predecessors, (275), 0 states have call successors, (0), 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 99 [2022-09-16 11:12:47,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:12:47,916 INFO L225 Difference]: With dead ends: 33905 [2022-09-16 11:12:47,916 INFO L226 Difference]: Without dead ends: 33269 [2022-09-16 11:12:47,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2157 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1221, Invalid=6772, Unknown=17, NotChecked=0, Total=8010 [2022-09-16 11:12:47,919 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 2879 mSDsluCounter, 2431 mSDsCounter, 0 mSdLazyCounter, 713 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2879 SdHoareTripleChecker+Valid, 2421 SdHoareTripleChecker+Invalid, 1612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 774 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-09-16 11:12:47,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2879 Valid, 2421 Invalid, 1612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 713 Invalid, 0 Unknown, 774 Unchecked, 0.4s Time] [2022-09-16 11:12:47,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33269 states. [2022-09-16 11:12:48,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33269 to 14369. [2022-09-16 11:12:48,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14369 states, 14365 states have (on average 3.439888618169161) internal successors, (49414), 14368 states have internal predecessors, (49414), 0 states have call successors, (0), 0 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 11:12:48,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14369 states to 14369 states and 49414 transitions. [2022-09-16 11:12:48,419 INFO L78 Accepts]: Start accepts. Automaton has 14369 states and 49414 transitions. Word has length 99 [2022-09-16 11:12:48,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:12:48,419 INFO L495 AbstractCegarLoop]: Abstraction has 14369 states and 49414 transitions. [2022-09-16 11:12:48,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 50 states have (on average 5.5) internal successors, (275), 51 states have internal predecessors, (275), 0 states have call successors, (0), 0 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 11:12:48,420 INFO L276 IsEmpty]: Start isEmpty. Operand 14369 states and 49414 transitions. [2022-09-16 11:12:48,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-09-16 11:12:48,428 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:12:48,428 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-09-16 11:12:48,449 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 11:12:48,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:12:48,642 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-09-16 11:12:48,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:12:48,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1955309717, now seen corresponding path program 1 times [2022-09-16 11:12:48,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:12:48,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887870890] [2022-09-16 11:12:48,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:12:48,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:12:48,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:12:48,773 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:12:48,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:12:48,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887870890] [2022-09-16 11:12:48,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887870890] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:12:48,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1895609011] [2022-09-16 11:12:48,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:12:48,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:12:48,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:12:48,775 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 11:12:48,777 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 11:12:48,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:12:48,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 21 conjunts are in the unsatisfiable core [2022-09-16 11:12:48,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:12:49,178 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:12:49,178 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:12:49,677 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:12:49,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1895609011] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:12:49,677 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:12:49,677 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 9] total 30 [2022-09-16 11:12:49,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119631496] [2022-09-16 11:12:49,677 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:12:49,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-09-16 11:12:49,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:12:49,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-09-16 11:12:49,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=730, Unknown=0, NotChecked=0, Total=870 [2022-09-16 11:12:49,679 INFO L87 Difference]: Start difference. First operand 14369 states and 49414 transitions. Second operand has 30 states, 30 states have (on average 8.5) internal successors, (255), 30 states have internal predecessors, (255), 0 states have call successors, (0), 0 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 11:12:50,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:12:50,506 INFO L93 Difference]: Finished difference Result 15957 states and 51340 transitions. [2022-09-16 11:12:50,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-09-16 11:12:50,507 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 8.5) internal successors, (255), 30 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2022-09-16 11:12:50,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:12:50,521 INFO L225 Difference]: With dead ends: 15957 [2022-09-16 11:12:50,521 INFO L226 Difference]: Without dead ends: 6285 [2022-09-16 11:12:50,522 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 632 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=589, Invalid=2273, Unknown=0, NotChecked=0, Total=2862 [2022-09-16 11:12:50,523 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 1528 mSDsluCounter, 2789 mSDsCounter, 0 mSdLazyCounter, 636 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1528 SdHoareTripleChecker+Valid, 2868 SdHoareTripleChecker+Invalid, 743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-09-16 11:12:50,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1528 Valid, 2868 Invalid, 743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 636 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-09-16 11:12:50,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6285 states. [2022-09-16 11:12:50,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6285 to 6278. [2022-09-16 11:12:50,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6278 states, 6274 states have (on average 3.4088300924450112) internal successors, (21387), 6277 states have internal predecessors, (21387), 0 states have call successors, (0), 0 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 11:12:50,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6278 states to 6278 states and 21387 transitions. [2022-09-16 11:12:50,633 INFO L78 Accepts]: Start accepts. Automaton has 6278 states and 21387 transitions. Word has length 103 [2022-09-16 11:12:50,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:12:50,633 INFO L495 AbstractCegarLoop]: Abstraction has 6278 states and 21387 transitions. [2022-09-16 11:12:50,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 8.5) internal successors, (255), 30 states have internal predecessors, (255), 0 states have call successors, (0), 0 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 11:12:50,633 INFO L276 IsEmpty]: Start isEmpty. Operand 6278 states and 21387 transitions. [2022-09-16 11:12:50,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-09-16 11:12:50,638 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:12:50,638 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-09-16 11:12:50,658 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 11:12:50,844 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,SelfDestructingSolverStorable13 [2022-09-16 11:12:50,844 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-09-16 11:12:50,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:12:50,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1615289653, now seen corresponding path program 1 times [2022-09-16 11:12:50,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:12:50,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56039558] [2022-09-16 11:12:50,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:12:50,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:12:50,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:12:50,900 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-09-16 11:12:50,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:12:50,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56039558] [2022-09-16 11:12:50,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56039558] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:12:50,900 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:12:50,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-09-16 11:12:50,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096961973] [2022-09-16 11:12:50,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:12:50,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:12:50,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:12:50,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:12:50,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:12:50,902 INFO L87 Difference]: Start difference. First operand 6278 states and 21387 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:12:50,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:12:50,971 INFO L93 Difference]: Finished difference Result 10260 states and 34715 transitions. [2022-09-16 11:12:50,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:12:50,972 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2022-09-16 11:12:50,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:12:50,999 INFO L225 Difference]: With dead ends: 10260 [2022-09-16 11:12:51,000 INFO L226 Difference]: Without dead ends: 10260 [2022-09-16 11:12:51,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:12:51,002 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 52 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-09-16 11:12:51,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 365 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-09-16 11:12:51,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10260 states. [2022-09-16 11:12:51,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10260 to 9292. [2022-09-16 11:12:51,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9292 states, 9288 states have (on average 3.4296942291128336) internal successors, (31855), 9291 states have internal predecessors, (31855), 0 states have call successors, (0), 0 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 11:12:51,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9292 states to 9292 states and 31855 transitions. [2022-09-16 11:12:51,217 INFO L78 Accepts]: Start accepts. Automaton has 9292 states and 31855 transitions. Word has length 112 [2022-09-16 11:12:51,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:12:51,217 INFO L495 AbstractCegarLoop]: Abstraction has 9292 states and 31855 transitions. [2022-09-16 11:12:51,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:12:51,217 INFO L276 IsEmpty]: Start isEmpty. Operand 9292 states and 31855 transitions. [2022-09-16 11:12:51,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-09-16 11:12:51,222 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:12:51,222 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-09-16 11:12:51,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-09-16 11:12:51,223 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-09-16 11:12:51,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:12:51,223 INFO L85 PathProgramCache]: Analyzing trace with hash -1615288599, now seen corresponding path program 2 times [2022-09-16 11:12:51,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:12:51,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000329287] [2022-09-16 11:12:51,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:12:51,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:12:51,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:12:51,324 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-09-16 11:12:51,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:12:51,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000329287] [2022-09-16 11:12:51,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000329287] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:12:51,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [258145136] [2022-09-16 11:12:51,327 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:12:51,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:12:51,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:12:51,328 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 11:12:51,346 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 11:12:51,444 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-09-16 11:12:51,444 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:12:51,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 14 conjunts are in the unsatisfiable core [2022-09-16 11:12:51,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:12:51,641 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-09-16 11:12:51,641 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:12:51,657 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:12:51,657 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24 [2022-09-16 11:12:51,856 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-09-16 11:12:51,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [258145136] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:12:51,856 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:12:51,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2022-09-16 11:12:51,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130555011] [2022-09-16 11:12:51,856 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:12:51,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-09-16 11:12:51,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:12:51,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-09-16 11:12:51,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-09-16 11:12:51,857 INFO L87 Difference]: Start difference. First operand 9292 states and 31855 transitions. Second operand has 9 states, 8 states have (on average 15.0) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 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 11:12:52,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:12:52,010 INFO L93 Difference]: Finished difference Result 14653 states and 48248 transitions. [2022-09-16 11:12:52,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-16 11:12:52,011 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 15.0) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 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 11:12:52,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:12:52,057 INFO L225 Difference]: With dead ends: 14653 [2022-09-16 11:12:52,057 INFO L226 Difference]: Without dead ends: 14653 [2022-09-16 11:12:52,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 217 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-09-16 11:12:52,059 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 260 mSDsluCounter, 497 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-09-16 11:12:52,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [260 Valid, 647 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-09-16 11:12:52,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14653 states. [2022-09-16 11:12:52,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14653 to 11833. [2022-09-16 11:12:52,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11833 states, 11829 states have (on average 3.4887141770225716) internal successors, (41268), 11832 states have internal predecessors, (41268), 0 states have call successors, (0), 0 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 11:12:52,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11833 states to 11833 states and 41268 transitions. [2022-09-16 11:12:52,369 INFO L78 Accepts]: Start accepts. Automaton has 11833 states and 41268 transitions. Word has length 112 [2022-09-16 11:12:52,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:12:52,369 INFO L495 AbstractCegarLoop]: Abstraction has 11833 states and 41268 transitions. [2022-09-16 11:12:52,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 15.0) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 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 11:12:52,369 INFO L276 IsEmpty]: Start isEmpty. Operand 11833 states and 41268 transitions. [2022-09-16 11:12:52,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-09-16 11:12:52,373 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:12:52,373 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-09-16 11:12:52,391 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 11:12:52,585 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,SelfDestructingSolverStorable15 [2022-09-16 11:12:52,586 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-09-16 11:12:52,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:12:52,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1615288598, now seen corresponding path program 1 times [2022-09-16 11:12:52,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:12:52,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662460700] [2022-09-16 11:12:52,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:12:52,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:12:52,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:12:52,709 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-09-16 11:12:52,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:12:52,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662460700] [2022-09-16 11:12:52,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662460700] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:12:52,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1712923751] [2022-09-16 11:12:52,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:12:52,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:12:52,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:12:52,711 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 11:12:52,712 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 11:12:52,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:12:52,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 56 conjunts are in the unsatisfiable core [2022-09-16 11:12:52,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:12:53,272 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-09-16 11:12:53,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:12:53,685 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-09-16 11:12:53,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:12:53,809 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-09-16 11:12:54,205 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:12:54,205 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:12:54,979 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:12:54,979 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 91 treesize of output 67 [2022-09-16 11:12:55,017 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:12:55,018 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 404 treesize of output 410 [2022-09-16 11:12:55,040 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:12:55,041 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 241 treesize of output 229 [2022-09-16 11:12:55,058 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:12:55,059 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 304 treesize of output 254 [2022-09-16 11:12:58,543 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:12:58,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1712923751] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:12:58,543 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:12:58,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 24, 24] total 53 [2022-09-16 11:12:58,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982790444] [2022-09-16 11:12:58,544 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:12:58,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-09-16 11:12:58,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:12:58,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-09-16 11:12:58,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=2575, Unknown=15, NotChecked=0, Total=2862 [2022-09-16 11:12:58,547 INFO L87 Difference]: Start difference. First operand 11833 states and 41268 transitions. Second operand has 54 states, 53 states have (on average 5.754716981132075) internal successors, (305), 54 states have internal predecessors, (305), 0 states have call successors, (0), 0 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 11:13:00,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:13:00,940 INFO L93 Difference]: Finished difference Result 15003 states and 50027 transitions. [2022-09-16 11:13:00,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-09-16 11:13:00,941 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 53 states have (on average 5.754716981132075) internal successors, (305), 54 states have internal predecessors, (305), 0 states have call successors, (0), 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 11:13:00,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:13:00,980 INFO L225 Difference]: With dead ends: 15003 [2022-09-16 11:13:00,980 INFO L226 Difference]: Without dead ends: 15003 [2022-09-16 11:13:00,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 186 SyntacticMatches, 4 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2203 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=923, Invalid=6894, Unknown=15, NotChecked=0, Total=7832 [2022-09-16 11:13:00,982 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 1072 mSDsluCounter, 3692 mSDsCounter, 0 mSdLazyCounter, 545 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1072 SdHoareTripleChecker+Valid, 3763 SdHoareTripleChecker+Invalid, 990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 434 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-09-16 11:13:00,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1072 Valid, 3763 Invalid, 990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 545 Invalid, 0 Unknown, 434 Unchecked, 0.3s Time] [2022-09-16 11:13:00,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15003 states. [2022-09-16 11:13:01,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15003 to 13339. [2022-09-16 11:13:01,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13339 states, 13335 states have (on average 3.4324709411323586) internal successors, (45772), 13338 states have internal predecessors, (45772), 0 states have call successors, (0), 0 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 11:13:01,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13339 states to 13339 states and 45772 transitions. [2022-09-16 11:13:01,257 INFO L78 Accepts]: Start accepts. Automaton has 13339 states and 45772 transitions. Word has length 112 [2022-09-16 11:13:01,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:13:01,258 INFO L495 AbstractCegarLoop]: Abstraction has 13339 states and 45772 transitions. [2022-09-16 11:13:01,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 53 states have (on average 5.754716981132075) internal successors, (305), 54 states have internal predecessors, (305), 0 states have call successors, (0), 0 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 11:13:01,258 INFO L276 IsEmpty]: Start isEmpty. Operand 13339 states and 45772 transitions. [2022-09-16 11:13:01,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-09-16 11:13:01,262 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:13:01,263 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-09-16 11:13:01,280 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 11:13:01,479 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,SelfDestructingSolverStorable16 [2022-09-16 11:13:01,480 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-09-16 11:13:01,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:13:01,480 INFO L85 PathProgramCache]: Analyzing trace with hash -2124008070, now seen corresponding path program 2 times [2022-09-16 11:13:01,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:13:01,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386823981] [2022-09-16 11:13:01,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:13:01,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:13:01,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:13:01,599 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-09-16 11:13:01,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:13:01,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386823981] [2022-09-16 11:13:01,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386823981] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:13:01,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1869238036] [2022-09-16 11:13:01,599 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:13:01,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:13:01,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:13:01,601 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 11:13:01,602 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 11:13:01,686 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-09-16 11:13:01,686 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:13:01,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 58 conjunts are in the unsatisfiable core [2022-09-16 11:13:01,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:13:02,116 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-09-16 11:13:02,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:13:02,501 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-09-16 11:13:02,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:13:02,620 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-09-16 11:13:03,015 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:13:03,015 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:13:03,850 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:13:03,850 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 91 treesize of output 67 [2022-09-16 11:13:03,873 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:13:03,873 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 198 treesize of output 229 [2022-09-16 11:13:03,895 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:13:03,896 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 161 treesize of output 149 [2022-09-16 11:13:03,912 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:13:03,913 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 94 treesize of output 101 [2022-09-16 11:13:06,957 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:13:06,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1869238036] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:13:06,957 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:13:06,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 24, 24] total 53 [2022-09-16 11:13:06,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466804075] [2022-09-16 11:13:06,958 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:13:06,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-09-16 11:13:06,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:13:06,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-09-16 11:13:06,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=292, Invalid=2558, Unknown=12, NotChecked=0, Total=2862 [2022-09-16 11:13:06,959 INFO L87 Difference]: Start difference. First operand 13339 states and 45772 transitions. Second operand has 54 states, 53 states have (on average 5.754716981132075) internal successors, (305), 54 states have internal predecessors, (305), 0 states have call successors, (0), 0 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 11:13:08,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:13:08,865 INFO L93 Difference]: Finished difference Result 15516 states and 51883 transitions. [2022-09-16 11:13:08,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-09-16 11:13:08,865 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 53 states have (on average 5.754716981132075) internal successors, (305), 54 states have internal predecessors, (305), 0 states have call successors, (0), 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 11:13:08,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:13:08,922 INFO L225 Difference]: With dead ends: 15516 [2022-09-16 11:13:08,922 INFO L226 Difference]: Without dead ends: 15516 [2022-09-16 11:13:08,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 188 SyntacticMatches, 2 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2047 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=959, Invalid=6508, Unknown=15, NotChecked=0, Total=7482 [2022-09-16 11:13:08,925 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 701 mSDsluCounter, 3709 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 701 SdHoareTripleChecker+Valid, 3786 SdHoareTripleChecker+Invalid, 895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 430 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-09-16 11:13:08,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [701 Valid, 3786 Invalid, 895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 456 Invalid, 0 Unknown, 430 Unchecked, 0.3s Time] [2022-09-16 11:13:08,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15516 states. [2022-09-16 11:13:09,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15516 to 14269. [2022-09-16 11:13:09,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14269 states, 14265 states have (on average 3.419348054679285) internal successors, (48777), 14268 states have internal predecessors, (48777), 0 states have call successors, (0), 0 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 11:13:09,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14269 states to 14269 states and 48777 transitions. [2022-09-16 11:13:09,203 INFO L78 Accepts]: Start accepts. Automaton has 14269 states and 48777 transitions. Word has length 112 [2022-09-16 11:13:09,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:13:09,204 INFO L495 AbstractCegarLoop]: Abstraction has 14269 states and 48777 transitions. [2022-09-16 11:13:09,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 53 states have (on average 5.754716981132075) internal successors, (305), 54 states have internal predecessors, (305), 0 states have call successors, (0), 0 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 11:13:09,204 INFO L276 IsEmpty]: Start isEmpty. Operand 14269 states and 48777 transitions. [2022-09-16 11:13:09,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-09-16 11:13:09,208 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:13:09,208 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-09-16 11:13:09,225 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 11:13:09,418 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,SelfDestructingSolverStorable17 [2022-09-16 11:13:09,418 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-09-16 11:13:09,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:13:09,418 INFO L85 PathProgramCache]: Analyzing trace with hash 156563771, now seen corresponding path program 3 times [2022-09-16 11:13:09,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:13:09,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439388266] [2022-09-16 11:13:09,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:13:09,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:13:09,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:13:10,464 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:13:10,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:13:10,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439388266] [2022-09-16 11:13:10,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439388266] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:13:10,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2043427265] [2022-09-16 11:13:10,464 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-09-16 11:13:10,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:13:10,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:13:10,465 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:13:10,467 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-09-16 11:13:10,581 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-09-16 11:13:10,581 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:13:10,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 30 conjunts are in the unsatisfiable core [2022-09-16 11:13:10,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:13:10,969 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-16 11:13:10,969 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:13:11,104 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:13:11,104 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 69 [2022-09-16 11:13:11,338 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-09-16 11:13:11,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2043427265] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:13:11,339 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:13:11,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 9, 6] total 42 [2022-09-16 11:13:11,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730991261] [2022-09-16 11:13:11,339 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:13:11,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-09-16 11:13:11,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:13:11,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-09-16 11:13:11,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=1567, Unknown=0, NotChecked=0, Total=1806 [2022-09-16 11:13:11,340 INFO L87 Difference]: Start difference. First operand 14269 states and 48777 transitions. Second operand has 43 states, 42 states have (on average 7.238095238095238) internal successors, (304), 43 states have internal predecessors, (304), 0 states have call successors, (0), 0 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 11:13:14,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:13:14,573 INFO L93 Difference]: Finished difference Result 35126 states and 120656 transitions. [2022-09-16 11:13:14,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-09-16 11:13:14,574 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 42 states have (on average 7.238095238095238) internal successors, (304), 43 states have internal predecessors, (304), 0 states have call successors, (0), 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 11:13:14,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:13:14,689 INFO L225 Difference]: With dead ends: 35126 [2022-09-16 11:13:14,689 INFO L226 Difference]: Without dead ends: 34820 [2022-09-16 11:13:14,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1820 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=955, Invalid=5687, Unknown=0, NotChecked=0, Total=6642 [2022-09-16 11:13:14,690 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 1623 mSDsluCounter, 4811 mSDsCounter, 0 mSdLazyCounter, 2494 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1623 SdHoareTripleChecker+Valid, 4810 SdHoareTripleChecker+Invalid, 2563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 2494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-09-16 11:13:14,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1623 Valid, 4810 Invalid, 2563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 2494 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-09-16 11:13:14,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34820 states. [2022-09-16 11:13:15,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34820 to 19936. [2022-09-16 11:13:15,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19936 states, 19932 states have (on average 3.497290788681517) internal successors, (69708), 19935 states have internal predecessors, (69708), 0 states have call successors, (0), 0 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 11:13:15,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19936 states to 19936 states and 69708 transitions. [2022-09-16 11:13:15,285 INFO L78 Accepts]: Start accepts. Automaton has 19936 states and 69708 transitions. Word has length 112 [2022-09-16 11:13:15,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:13:15,285 INFO L495 AbstractCegarLoop]: Abstraction has 19936 states and 69708 transitions. [2022-09-16 11:13:15,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 42 states have (on average 7.238095238095238) internal successors, (304), 43 states have internal predecessors, (304), 0 states have call successors, (0), 0 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 11:13:15,285 INFO L276 IsEmpty]: Start isEmpty. Operand 19936 states and 69708 transitions. [2022-09-16 11:13:15,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-09-16 11:13:15,291 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:13:15,291 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-09-16 11:13:15,307 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-09-16 11:13:15,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:13:15,500 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-09-16 11:13:15,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:13:15,501 INFO L85 PathProgramCache]: Analyzing trace with hash 156563772, now seen corresponding path program 3 times [2022-09-16 11:13:15,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:13:15,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804844884] [2022-09-16 11:13:15,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:13:15,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:13:15,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:13:16,971 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:13:16,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:13:16,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804844884] [2022-09-16 11:13:16,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804844884] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:13:16,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1096134031] [2022-09-16 11:13:16,972 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-09-16 11:13:16,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:13:16,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:13:16,973 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:13:16,973 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-09-16 11:13:17,093 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-09-16 11:13:17,093 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:13:17,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 57 conjunts are in the unsatisfiable core [2022-09-16 11:13:17,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:13:17,733 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-09-16 11:13:18,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:13:18,268 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-09-16 11:13:18,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:13:18,418 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-09-16 11:13:18,922 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:13:18,922 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:13:20,079 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:13:20,079 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 66 [2022-09-16 11:13:20,131 INFO L356 Elim1Store]: treesize reduction 12, result has 83.6 percent of original size [2022-09-16 11:13:20,132 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 194 treesize of output 222 [2022-09-16 11:13:20,153 INFO L356 Elim1Store]: treesize reduction 12, result has 67.6 percent of original size [2022-09-16 11:13:20,153 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 158 treesize of output 146 [2022-09-16 11:13:20,175 INFO L356 Elim1Store]: treesize reduction 12, result has 67.6 percent of original size [2022-09-16 11:13:20,175 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 93 treesize of output 99 [2022-09-16 11:13:24,287 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:13:24,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1096134031] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:13:24,287 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:13:24,287 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 24, 24] total 77 [2022-09-16 11:13:24,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543654672] [2022-09-16 11:13:24,287 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:13:24,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2022-09-16 11:13:24,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:13:24,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2022-09-16 11:13:24,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=485, Invalid=5509, Unknown=12, NotChecked=0, Total=6006 [2022-09-16 11:13:24,289 INFO L87 Difference]: Start difference. First operand 19936 states and 69708 transitions. Second operand has 78 states, 77 states have (on average 4.077922077922078) internal successors, (314), 78 states have internal predecessors, (314), 0 states have call successors, (0), 0 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 11:13:34,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:13:34,851 INFO L93 Difference]: Finished difference Result 22231 states and 76853 transitions. [2022-09-16 11:13:34,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-09-16 11:13:34,851 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 77 states have (on average 4.077922077922078) internal successors, (314), 78 states have internal predecessors, (314), 0 states have call successors, (0), 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 11:13:34,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:13:34,916 INFO L225 Difference]: With dead ends: 22231 [2022-09-16 11:13:34,916 INFO L226 Difference]: Without dead ends: 22231 [2022-09-16 11:13:34,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 199 SyntacticMatches, 2 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4481 ImplicationChecksByTransitivity, 13.2s TimeCoverageRelationStatistics Valid=1013, Invalid=12544, Unknown=15, NotChecked=0, Total=13572 [2022-09-16 11:13:34,920 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 1039 mSDsluCounter, 7650 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1039 SdHoareTripleChecker+Valid, 7802 SdHoareTripleChecker+Invalid, 754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 246 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-09-16 11:13:34,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1039 Valid, 7802 Invalid, 754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 495 Invalid, 0 Unknown, 246 Unchecked, 0.3s Time] [2022-09-16 11:13:34,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22231 states. [2022-09-16 11:13:35,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22231 to 21031. [2022-09-16 11:13:35,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21031 states, 21027 states have (on average 3.490654872307034) internal successors, (73398), 21030 states have internal predecessors, (73398), 0 states have call successors, (0), 0 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 11:13:35,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21031 states to 21031 states and 73398 transitions. [2022-09-16 11:13:35,406 INFO L78 Accepts]: Start accepts. Automaton has 21031 states and 73398 transitions. Word has length 112 [2022-09-16 11:13:35,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:13:35,406 INFO L495 AbstractCegarLoop]: Abstraction has 21031 states and 73398 transitions. [2022-09-16 11:13:35,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 77 states have (on average 4.077922077922078) internal successors, (314), 78 states have internal predecessors, (314), 0 states have call successors, (0), 0 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 11:13:35,407 INFO L276 IsEmpty]: Start isEmpty. Operand 21031 states and 73398 transitions. [2022-09-16 11:13:35,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-09-16 11:13:35,414 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:13:35,414 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:13:35,432 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-09-16 11:13:35,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2022-09-16 11:13:35,615 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-09-16 11:13:35,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:13:35,616 INFO L85 PathProgramCache]: Analyzing trace with hash -142595975, now seen corresponding path program 4 times [2022-09-16 11:13:35,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:13:35,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636606036] [2022-09-16 11:13:35,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:13:35,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:13:35,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:13:35,674 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-09-16 11:13:35,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:13:35,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636606036] [2022-09-16 11:13:35,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636606036] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:13:35,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1773939633] [2022-09-16 11:13:35,674 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-09-16 11:13:35,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:13:35,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:13:35,675 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:13:35,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-09-16 11:13:35,776 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-09-16 11:13:35,776 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:13:35,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 10 conjunts are in the unsatisfiable core [2022-09-16 11:13:35,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:13:35,866 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-09-16 11:13:35,867 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:13:36,109 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-09-16 11:13:36,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1773939633] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:13:36,110 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:13:36,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 6] total 10 [2022-09-16 11:13:36,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079926569] [2022-09-16 11:13:36,110 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:13:36,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-09-16 11:13:36,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:13:36,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-09-16 11:13:36,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-09-16 11:13:36,111 INFO L87 Difference]: Start difference. First operand 21031 states and 73398 transitions. Second operand has 11 states, 10 states have (on average 18.8) internal successors, (188), 11 states have internal predecessors, (188), 0 states have call successors, (0), 0 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 11:13:36,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:13:36,342 INFO L93 Difference]: Finished difference Result 33117 states and 114640 transitions. [2022-09-16 11:13:36,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-16 11:13:36,343 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 18.8) internal successors, (188), 11 states have internal predecessors, (188), 0 states have call successors, (0), 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 115 [2022-09-16 11:13:36,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:13:36,453 INFO L225 Difference]: With dead ends: 33117 [2022-09-16 11:13:36,454 INFO L226 Difference]: Without dead ends: 32808 [2022-09-16 11:13:36,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2022-09-16 11:13:36,454 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 595 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 595 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-09-16 11:13:36,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [595 Valid, 322 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-09-16 11:13:36,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32808 states. [2022-09-16 11:13:37,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32808 to 29782. [2022-09-16 11:13:37,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29782 states, 29778 states have (on average 3.5473503929075156) internal successors, (105633), 29781 states have internal predecessors, (105633), 0 states have call successors, (0), 0 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 11:13:37,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29782 states to 29782 states and 105633 transitions. [2022-09-16 11:13:37,421 INFO L78 Accepts]: Start accepts. Automaton has 29782 states and 105633 transitions. Word has length 115 [2022-09-16 11:13:37,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:13:37,422 INFO L495 AbstractCegarLoop]: Abstraction has 29782 states and 105633 transitions. [2022-09-16 11:13:37,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 18.8) internal successors, (188), 11 states have internal predecessors, (188), 0 states have call successors, (0), 0 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 11:13:37,422 INFO L276 IsEmpty]: Start isEmpty. Operand 29782 states and 105633 transitions. [2022-09-16 11:13:37,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-09-16 11:13:37,430 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:13:37,430 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-09-16 11:13:37,447 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-09-16 11:13:37,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:13:37,635 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-09-16 11:13:37,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:13:37,635 INFO L85 PathProgramCache]: Analyzing trace with hash -26086940, now seen corresponding path program 1 times [2022-09-16 11:13:37,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:13:37,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067822878] [2022-09-16 11:13:37,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:13:37,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:13:37,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:13:38,333 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:13:38,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:13:38,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067822878] [2022-09-16 11:13:38,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067822878] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:13:38,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1051725335] [2022-09-16 11:13:38,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:13:38,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:13:38,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:13:38,336 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:13:38,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-09-16 11:13:38,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:13:38,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 44 conjunts are in the unsatisfiable core [2022-09-16 11:13:38,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:13:39,105 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:13:39,105 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:13:39,282 INFO L356 Elim1Store]: treesize reduction 14, result has 73.6 percent of original size [2022-09-16 11:13:39,283 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 52 treesize of output 56 [2022-09-16 11:13:40,167 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:13:40,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1051725335] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:13:40,167 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:13:40,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 14, 14] total 49 [2022-09-16 11:13:40,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102499453] [2022-09-16 11:13:40,168 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:13:40,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-09-16 11:13:40,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:13:40,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-09-16 11:13:40,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=562, Invalid=1888, Unknown=0, NotChecked=0, Total=2450 [2022-09-16 11:13:40,169 INFO L87 Difference]: Start difference. First operand 29782 states and 105633 transitions. Second operand has 50 states, 49 states have (on average 6.714285714285714) internal successors, (329), 50 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:13:45,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:13:45,869 INFO L93 Difference]: Finished difference Result 114566 states and 400969 transitions. [2022-09-16 11:13:45,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2022-09-16 11:13:45,870 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 49 states have (on average 6.714285714285714) internal successors, (329), 50 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2022-09-16 11:13:45,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:13:46,981 INFO L225 Difference]: With dead ends: 114566 [2022-09-16 11:13:46,987 INFO L226 Difference]: Without dead ends: 113240 [2022-09-16 11:13:46,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6622 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=3029, Invalid=13741, Unknown=0, NotChecked=0, Total=16770 [2022-09-16 11:13:46,989 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 4039 mSDsluCounter, 4202 mSDsCounter, 0 mSdLazyCounter, 1928 mSolverCounterSat, 248 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4039 SdHoareTripleChecker+Valid, 4149 SdHoareTripleChecker+Invalid, 2176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 248 IncrementalHoareTripleChecker+Valid, 1928 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-09-16 11:13:46,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4039 Valid, 4149 Invalid, 2176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [248 Valid, 1928 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-09-16 11:13:47,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113240 states. [2022-09-16 11:13:48,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113240 to 47879. [2022-09-16 11:13:48,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47879 states, 47874 states have (on average 3.5770146634916657) internal successors, (171246), 47878 states have internal predecessors, (171246), 0 states have call successors, (0), 0 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 11:13:49,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47879 states to 47879 states and 171246 transitions. [2022-09-16 11:13:49,277 INFO L78 Accepts]: Start accepts. Automaton has 47879 states and 171246 transitions. Word has length 117 [2022-09-16 11:13:49,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:13:49,278 INFO L495 AbstractCegarLoop]: Abstraction has 47879 states and 171246 transitions. [2022-09-16 11:13:49,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 49 states have (on average 6.714285714285714) internal successors, (329), 50 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:13:49,278 INFO L276 IsEmpty]: Start isEmpty. Operand 47879 states and 171246 transitions. [2022-09-16 11:13:49,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-09-16 11:13:49,289 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:13:49,289 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-09-16 11:13:49,305 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-09-16 11:13:49,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:13:49,490 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-09-16 11:13:49,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:13:49,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1745765430, now seen corresponding path program 2 times [2022-09-16 11:13:49,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:13:49,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369461453] [2022-09-16 11:13:49,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:13:49,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:13:49,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:13:51,063 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:13:51,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:13:51,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369461453] [2022-09-16 11:13:51,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369461453] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:13:51,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1742377758] [2022-09-16 11:13:51,064 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:13:51,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:13:51,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:13:51,065 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:13:51,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-09-16 11:13:51,170 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-09-16 11:13:51,171 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:13:51,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 59 conjunts are in the unsatisfiable core [2022-09-16 11:13:51,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:13:52,057 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-09-16 11:13:52,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:13:52,764 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-09-16 11:13:52,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:13:52,924 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-09-16 11:13:53,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:13:53,080 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-09-16 11:13:53,517 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:13:53,517 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:13:54,981 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:13:54,981 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 99 treesize of output 75 [2022-09-16 11:13:55,031 INFO L356 Elim1Store]: treesize reduction 12, result has 83.6 percent of original size [2022-09-16 11:13:55,033 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 3176 treesize of output 3036 [2022-09-16 11:13:55,070 INFO L356 Elim1Store]: treesize reduction 12, result has 67.6 percent of original size [2022-09-16 11:13:55,070 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 2972 treesize of output 2708 [2022-09-16 11:13:55,111 INFO L356 Elim1Store]: treesize reduction 12, result has 67.6 percent of original size [2022-09-16 11:13:55,111 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 2684 treesize of output 2564 [2022-09-16 11:13:55,154 INFO L356 Elim1Store]: treesize reduction 12, result has 67.6 percent of original size [2022-09-16 11:13:55,154 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 2540 treesize of output 1988 [2022-09-16 11:14:12,357 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:14:12,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1742377758] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:14:12,358 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:14:12,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 76 [2022-09-16 11:14:12,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419545852] [2022-09-16 11:14:12,358 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:14:12,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2022-09-16 11:14:12,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:14:12,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2022-09-16 11:14:12,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=386, Invalid=5442, Unknown=24, NotChecked=0, Total=5852 [2022-09-16 11:14:12,360 INFO L87 Difference]: Start difference. First operand 47879 states and 171246 transitions. Second operand has 77 states, 76 states have (on average 4.328947368421052) internal successors, (329), 77 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:14:19,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:14:19,027 INFO L93 Difference]: Finished difference Result 50891 states and 179701 transitions. [2022-09-16 11:14:19,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-09-16 11:14:19,028 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 76 states have (on average 4.328947368421052) internal successors, (329), 77 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2022-09-16 11:14:19,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:14:19,226 INFO L225 Difference]: With dead ends: 50891 [2022-09-16 11:14:19,227 INFO L226 Difference]: Without dead ends: 50891 [2022-09-16 11:14:19,228 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 201 SyntacticMatches, 10 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4582 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=1356, Invalid=13626, Unknown=24, NotChecked=0, Total=15006 [2022-09-16 11:14:19,228 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 1138 mSDsluCounter, 6841 mSDsCounter, 0 mSdLazyCounter, 710 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1138 SdHoareTripleChecker+Valid, 7013 SdHoareTripleChecker+Invalid, 1173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 710 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 431 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-09-16 11:14:19,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1138 Valid, 7013 Invalid, 1173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 710 Invalid, 0 Unknown, 431 Unchecked, 0.4s Time] [2022-09-16 11:14:19,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50891 states. [2022-09-16 11:14:20,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50891 to 48839. [2022-09-16 11:14:20,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48839 states, 48834 states have (on average 3.572162837367408) internal successors, (174443), 48838 states have internal predecessors, (174443), 0 states have call successors, (0), 0 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 11:14:20,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48839 states to 48839 states and 174443 transitions. [2022-09-16 11:14:20,350 INFO L78 Accepts]: Start accepts. Automaton has 48839 states and 174443 transitions. Word has length 117 [2022-09-16 11:14:20,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:14:20,350 INFO L495 AbstractCegarLoop]: Abstraction has 48839 states and 174443 transitions. [2022-09-16 11:14:20,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 76 states have (on average 4.328947368421052) internal successors, (329), 77 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:14:20,350 INFO L276 IsEmpty]: Start isEmpty. Operand 48839 states and 174443 transitions. [2022-09-16 11:14:20,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-09-16 11:14:20,362 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:14:20,362 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-09-16 11:14:20,380 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-09-16 11:14:20,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-09-16 11:14:20,563 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-09-16 11:14:20,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:14:20,563 INFO L85 PathProgramCache]: Analyzing trace with hash 77581091, now seen corresponding path program 1 times [2022-09-16 11:14:20,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:14:20,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420284737] [2022-09-16 11:14:20,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:14:20,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:14:20,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:14:21,712 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:14:21,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:14:21,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420284737] [2022-09-16 11:14:21,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420284737] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:14:21,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1390894043] [2022-09-16 11:14:21,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:14:21,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:14:21,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:14:21,714 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:14:21,714 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-09-16 11:14:21,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:14:21,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 52 conjunts are in the unsatisfiable core [2022-09-16 11:14:21,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:14:21,814 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-16 11:14:21,991 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-09-16 11:14:21,992 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-09-16 11:14:22,746 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-09-16 11:14:22,793 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:14:22,793 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:14:22,893 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:14:22,894 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 44 [2022-09-16 11:14:22,902 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2022-09-16 11:14:24,523 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:14:24,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1390894043] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:14:24,523 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:14:24,524 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 20, 20] total 69 [2022-09-16 11:14:24,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993289260] [2022-09-16 11:14:24,524 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:14:24,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2022-09-16 11:14:24,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:14:24,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2022-09-16 11:14:24,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=401, Invalid=4428, Unknown=1, NotChecked=0, Total=4830 [2022-09-16 11:14:24,526 INFO L87 Difference]: Start difference. First operand 48839 states and 174443 transitions. Second operand has 70 states, 69 states have (on average 4.63768115942029) internal successors, (320), 70 states have internal predecessors, (320), 0 states have call successors, (0), 0 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 11:14:37,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:14:37,083 INFO L93 Difference]: Finished difference Result 92923 states and 321029 transitions. [2022-09-16 11:14:37,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2022-09-16 11:14:37,083 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 69 states have (on average 4.63768115942029) internal successors, (320), 70 states have internal predecessors, (320), 0 states have call successors, (0), 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 117 [2022-09-16 11:14:37,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:14:37,446 INFO L225 Difference]: With dead ends: 92923 [2022-09-16 11:14:37,447 INFO L226 Difference]: Without dead ends: 92191 [2022-09-16 11:14:37,448 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 395 GetRequests, 210 SyntacticMatches, 22 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 5 DeprecatedPredicates, 10163 ImplicationChecksByTransitivity, 10.7s TimeCoverageRelationStatistics Valid=3350, Invalid=23709, Unknown=1, NotChecked=0, Total=27060 [2022-09-16 11:14:37,448 INFO L413 NwaCegarLoop]: 365 mSDtfsCounter, 5555 mSDsluCounter, 11159 mSDsCounter, 0 mSdLazyCounter, 4523 mSolverCounterSat, 332 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5555 SdHoareTripleChecker+Valid, 10789 SdHoareTripleChecker+Invalid, 5978 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 332 IncrementalHoareTripleChecker+Valid, 4523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1123 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-09-16 11:14:37,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5555 Valid, 10789 Invalid, 5978 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [332 Valid, 4523 Invalid, 0 Unknown, 1123 Unchecked, 2.8s Time] [2022-09-16 11:14:37,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92191 states. [2022-09-16 11:14:39,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92191 to 56320. [2022-09-16 11:14:39,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56320 states, 56316 states have (on average 3.5404858299595143) internal successors, (199386), 56319 states have internal predecessors, (199386), 0 states have call successors, (0), 0 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 11:14:39,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56320 states to 56320 states and 199386 transitions. [2022-09-16 11:14:39,740 INFO L78 Accepts]: Start accepts. Automaton has 56320 states and 199386 transitions. Word has length 117 [2022-09-16 11:14:39,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:14:39,741 INFO L495 AbstractCegarLoop]: Abstraction has 56320 states and 199386 transitions. [2022-09-16 11:14:39,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 69 states have (on average 4.63768115942029) internal successors, (320), 70 states have internal predecessors, (320), 0 states have call successors, (0), 0 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 11:14:39,741 INFO L276 IsEmpty]: Start isEmpty. Operand 56320 states and 199386 transitions. [2022-09-16 11:14:39,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-09-16 11:14:39,756 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:14:39,757 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-09-16 11:14:39,777 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-09-16 11:14:39,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:14:39,958 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-09-16 11:14:39,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:14:39,959 INFO L85 PathProgramCache]: Analyzing trace with hash 77581092, now seen corresponding path program 3 times [2022-09-16 11:14:39,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:14:39,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643007466] [2022-09-16 11:14:39,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:14:39,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:14:40,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:14:40,361 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-09-16 11:14:40,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:14:40,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643007466] [2022-09-16 11:14:40,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643007466] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:14:40,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863935781] [2022-09-16 11:14:40,362 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-09-16 11:14:40,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:14:40,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:14:40,363 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:14:40,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-09-16 11:14:40,485 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-09-16 11:14:40,485 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:14:40,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 31 conjunts are in the unsatisfiable core [2022-09-16 11:14:40,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:14:41,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:14:41,093 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 42 [2022-09-16 11:14:41,121 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-09-16 11:14:41,121 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:14:41,141 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_686 (Array Int Int))) (< 0 (+ c_~sum~0 2147483649 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_686) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4)))))) is different from false [2022-09-16 11:14:41,287 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:14:41,288 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 83 treesize of output 93 [2022-09-16 11:14:41,293 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 11 [2022-09-16 11:14:41,873 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-09-16 11:14:41,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [863935781] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:14:41,873 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:14:41,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 38 [2022-09-16 11:14:41,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598503651] [2022-09-16 11:14:41,873 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:14:41,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-09-16 11:14:41,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:14:41,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-09-16 11:14:41,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=1229, Unknown=2, NotChecked=72, Total=1482 [2022-09-16 11:14:41,875 INFO L87 Difference]: Start difference. First operand 56320 states and 199386 transitions. Second operand has 39 states, 38 states have (on average 7.947368421052632) internal successors, (302), 39 states have internal predecessors, (302), 0 states have call successors, (0), 0 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 11:14:44,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:14:44,130 INFO L93 Difference]: Finished difference Result 136890 states and 491940 transitions. [2022-09-16 11:14:44,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-09-16 11:14:44,131 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 7.947368421052632) internal successors, (302), 39 states have internal predecessors, (302), 0 states have call successors, (0), 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 117 [2022-09-16 11:14:44,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:14:44,905 INFO L225 Difference]: With dead ends: 136890 [2022-09-16 11:14:44,905 INFO L226 Difference]: Without dead ends: 136626 [2022-09-16 11:14:44,905 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 212 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 987 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=577, Invalid=3083, Unknown=4, NotChecked=118, Total=3782 [2022-09-16 11:14:44,906 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 1143 mSDsluCounter, 3218 mSDsCounter, 0 mSdLazyCounter, 1017 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1143 SdHoareTripleChecker+Valid, 3224 SdHoareTripleChecker+Invalid, 1571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1017 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 513 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-09-16 11:14:44,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1143 Valid, 3224 Invalid, 1571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1017 Invalid, 0 Unknown, 513 Unchecked, 0.4s Time] [2022-09-16 11:14:45,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136626 states. [2022-09-16 11:14:47,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136626 to 56317. [2022-09-16 11:14:47,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56317 states, 56313 states have (on average 3.532985278710067) internal successors, (198953), 56316 states have internal predecessors, (198953), 0 states have call successors, (0), 0 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 11:14:47,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56317 states to 56317 states and 198953 transitions. [2022-09-16 11:14:47,783 INFO L78 Accepts]: Start accepts. Automaton has 56317 states and 198953 transitions. Word has length 117 [2022-09-16 11:14:47,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:14:47,783 INFO L495 AbstractCegarLoop]: Abstraction has 56317 states and 198953 transitions. [2022-09-16 11:14:47,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 38 states have (on average 7.947368421052632) internal successors, (302), 39 states have internal predecessors, (302), 0 states have call successors, (0), 0 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 11:14:47,783 INFO L276 IsEmpty]: Start isEmpty. Operand 56317 states and 198953 transitions. [2022-09-16 11:14:47,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-09-16 11:14:47,808 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:14:47,808 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-09-16 11:14:47,826 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-09-16 11:14:48,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:14:48,023 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-09-16 11:14:48,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:14:48,024 INFO L85 PathProgramCache]: Analyzing trace with hash -466242551, now seen corresponding path program 2 times [2022-09-16 11:14:48,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:14:48,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984521093] [2022-09-16 11:14:48,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:14:48,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:14:48,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:14:48,955 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:14:48,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:14:48,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984521093] [2022-09-16 11:14:48,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984521093] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:14:48,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1455143269] [2022-09-16 11:14:48,956 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:14:48,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:14:48,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:14:48,968 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:14:48,970 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-09-16 11:14:49,153 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-09-16 11:14:49,154 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:14:49,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 68 conjunts are in the unsatisfiable core [2022-09-16 11:14:49,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:14:49,917 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-09-16 11:14:50,303 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-16 11:14:50,409 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-16 11:14:50,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:14:50,660 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-09-16 11:14:50,933 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:14:50,933 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:14:52,249 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:14:52,249 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 132 treesize of output 96 [2022-09-16 11:14:52,274 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:14:52,274 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 474 treesize of output 492 [2022-09-16 11:14:52,291 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:14:52,292 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 376 treesize of output 322 [2022-09-16 11:14:52,317 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:14:52,317 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 360 treesize of output 360 [2022-09-16 11:14:52,343 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:14:52,344 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 249 treesize of output 275 [2022-09-16 11:14:55,604 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 19 refuted. 2 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:14:55,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1455143269] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:14:55,605 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:14:55,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 25, 24] total 71 [2022-09-16 11:14:55,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174146163] [2022-09-16 11:14:55,605 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:14:55,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2022-09-16 11:14:55,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:14:55,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2022-09-16 11:14:55,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=4649, Unknown=26, NotChecked=0, Total=5112 [2022-09-16 11:14:55,607 INFO L87 Difference]: Start difference. First operand 56317 states and 198953 transitions. Second operand has 72 states, 71 states have (on average 4.633802816901408) internal successors, (329), 72 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:15:12,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:15:12,039 INFO L93 Difference]: Finished difference Result 183167 states and 640384 transitions. [2022-09-16 11:15:12,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2022-09-16 11:15:12,040 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 71 states have (on average 4.633802816901408) internal successors, (329), 72 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2022-09-16 11:15:12,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:15:13,038 INFO L225 Difference]: With dead ends: 183167 [2022-09-16 11:15:13,038 INFO L226 Difference]: Without dead ends: 181325 [2022-09-16 11:15:13,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 198 SyntacticMatches, 21 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13237 ImplicationChecksByTransitivity, 14.6s TimeCoverageRelationStatistics Valid=3833, Invalid=30160, Unknown=47, NotChecked=0, Total=34040 [2022-09-16 11:15:13,041 INFO L413 NwaCegarLoop]: 303 mSDtfsCounter, 5320 mSDsluCounter, 11029 mSDsCounter, 0 mSdLazyCounter, 4162 mSolverCounterSat, 317 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5320 SdHoareTripleChecker+Valid, 10550 SdHoareTripleChecker+Invalid, 7072 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 317 IncrementalHoareTripleChecker+Valid, 4162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2593 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-09-16 11:15:13,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5320 Valid, 10550 Invalid, 7072 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [317 Valid, 4162 Invalid, 0 Unknown, 2593 Unchecked, 2.4s Time] [2022-09-16 11:15:13,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181325 states. [2022-09-16 11:15:16,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181325 to 81479. [2022-09-16 11:15:16,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81479 states, 81475 states have (on average 3.58104940165695) internal successors, (291766), 81478 states have internal predecessors, (291766), 0 states have call successors, (0), 0 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 11:15:17,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81479 states to 81479 states and 291766 transitions. [2022-09-16 11:15:17,052 INFO L78 Accepts]: Start accepts. Automaton has 81479 states and 291766 transitions. Word has length 117 [2022-09-16 11:15:17,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:15:17,052 INFO L495 AbstractCegarLoop]: Abstraction has 81479 states and 291766 transitions. [2022-09-16 11:15:17,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 71 states have (on average 4.633802816901408) internal successors, (329), 72 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:15:17,052 INFO L276 IsEmpty]: Start isEmpty. Operand 81479 states and 291766 transitions. [2022-09-16 11:15:17,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-09-16 11:15:17,067 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:15:17,067 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-09-16 11:15:17,084 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-09-16 11:15:17,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:15:17,284 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-09-16 11:15:17,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:15:17,284 INFO L85 PathProgramCache]: Analyzing trace with hash -466242550, now seen corresponding path program 4 times [2022-09-16 11:15:17,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:15:17,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276642748] [2022-09-16 11:15:17,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:15:17,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:15:17,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:15:18,379 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:15:18,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:15:18,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276642748] [2022-09-16 11:15:18,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276642748] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:15:18,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [233987206] [2022-09-16 11:15:18,380 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-09-16 11:15:18,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:15:18,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:15:18,381 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:15:18,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-09-16 11:15:18,473 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-09-16 11:15:18,473 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:15:18,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 58 conjunts are in the unsatisfiable core [2022-09-16 11:15:18,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:15:19,141 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-09-16 11:15:19,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:15:19,676 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-09-16 11:15:19,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:15:19,816 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-09-16 11:15:20,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:15:20,108 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 31 [2022-09-16 11:15:20,310 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:15:20,310 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:15:21,309 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:15:21,310 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 97 treesize of output 73 [2022-09-16 11:15:21,333 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:15:21,334 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 2108 treesize of output 2012 [2022-09-16 11:15:21,353 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:15:21,353 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1944 treesize of output 1854 [2022-09-16 11:15:21,374 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:15:21,375 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1828 treesize of output 1622 [2022-09-16 11:15:21,392 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:15:21,392 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1494 treesize of output 1078 [2022-09-16 11:15:33,252 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:15:33,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [233987206] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:15:33,253 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:15:33,253 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 26, 26] total 78 [2022-09-16 11:15:33,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355376681] [2022-09-16 11:15:33,253 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:15:33,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2022-09-16 11:15:33,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:15:33,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2022-09-16 11:15:33,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=505, Invalid=5635, Unknown=22, NotChecked=0, Total=6162 [2022-09-16 11:15:33,255 INFO L87 Difference]: Start difference. First operand 81479 states and 291766 transitions. Second operand has 79 states, 78 states have (on average 4.217948717948718) internal successors, (329), 79 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:15:38,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:15:38,098 INFO L93 Difference]: Finished difference Result 83168 states and 296159 transitions. [2022-09-16 11:15:38,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-09-16 11:15:38,099 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 78 states have (on average 4.217948717948718) internal successors, (329), 79 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2022-09-16 11:15:38,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:15:38,380 INFO L225 Difference]: With dead ends: 83168 [2022-09-16 11:15:38,380 INFO L226 Difference]: Without dead ends: 83168 [2022-09-16 11:15:38,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4849 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=1432, Invalid=13791, Unknown=29, NotChecked=0, Total=15252 [2022-09-16 11:15:38,383 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 864 mSDsluCounter, 5578 mSDsCounter, 0 mSdLazyCounter, 767 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 864 SdHoareTripleChecker+Valid, 5708 SdHoareTripleChecker+Invalid, 1408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 609 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-09-16 11:15:38,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [864 Valid, 5708 Invalid, 1408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 767 Invalid, 0 Unknown, 609 Unchecked, 0.4s Time] [2022-09-16 11:15:38,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83168 states. [2022-09-16 11:15:39,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83168 to 81707. [2022-09-16 11:15:40,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81707 states, 81703 states have (on average 3.5796971959413977) internal successors, (292472), 81706 states have internal predecessors, (292472), 0 states have call successors, (0), 0 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 11:15:40,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81707 states to 81707 states and 292472 transitions. [2022-09-16 11:15:40,311 INFO L78 Accepts]: Start accepts. Automaton has 81707 states and 292472 transitions. Word has length 117 [2022-09-16 11:15:40,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:15:40,312 INFO L495 AbstractCegarLoop]: Abstraction has 81707 states and 292472 transitions. [2022-09-16 11:15:40,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 78 states have (on average 4.217948717948718) internal successors, (329), 79 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:15:40,312 INFO L276 IsEmpty]: Start isEmpty. Operand 81707 states and 292472 transitions. [2022-09-16 11:15:40,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-09-16 11:15:40,809 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:15:40,809 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-09-16 11:15:40,829 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-09-16 11:15:41,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-09-16 11:15:41,028 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-09-16 11:15:41,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:15:41,030 INFO L85 PathProgramCache]: Analyzing trace with hash -829570287, now seen corresponding path program 3 times [2022-09-16 11:15:41,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:15:41,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436822900] [2022-09-16 11:15:41,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:15:41,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:15:41,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:15:41,793 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:15:41,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:15:41,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436822900] [2022-09-16 11:15:41,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436822900] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:15:41,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143752815] [2022-09-16 11:15:41,793 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-09-16 11:15:41,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:15:41,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:15:41,794 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:15:41,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-09-16 11:15:41,930 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-09-16 11:15:41,931 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:15:41,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 21 conjunts are in the unsatisfiable core [2022-09-16 11:15:41,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:15:42,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:15:42,353 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-09-16 11:15:42,381 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-09-16 11:15:42,381 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:15:42,411 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_805 (Array Int Int))) (< (+ c_~sum~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_805) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4)))) 2147483648)) is different from false [2022-09-16 11:15:42,417 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_805 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_805) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4) 4)) 1)) is different from false [2022-09-16 11:15:42,424 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:15:42,424 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 43 [2022-09-16 11:15:42,425 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 3 [2022-09-16 11:15:42,874 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 11 trivial. 2 not checked. [2022-09-16 11:15:42,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2143752815] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:15:42,874 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:15:42,875 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 12, 12] total 45 [2022-09-16 11:15:42,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950258308] [2022-09-16 11:15:42,875 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:15:42,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-09-16 11:15:42,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:15:42,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-09-16 11:15:42,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=1779, Unknown=2, NotChecked=170, Total=2070 [2022-09-16 11:15:42,876 INFO L87 Difference]: Start difference. First operand 81707 states and 292472 transitions. Second operand has 46 states, 45 states have (on average 6.511111111111111) internal successors, (293), 46 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 11:15:56,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:15:56,484 INFO L93 Difference]: Finished difference Result 169943 states and 598249 transitions. [2022-09-16 11:15:56,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2022-09-16 11:15:56,485 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 6.511111111111111) internal successors, (293), 46 states have internal predecessors, (293), 0 states have call successors, (0), 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 117 [2022-09-16 11:15:56,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:15:57,247 INFO L225 Difference]: With dead ends: 169943 [2022-09-16 11:15:57,247 INFO L226 Difference]: Without dead ends: 164369 [2022-09-16 11:15:57,248 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 214 SyntacticMatches, 4 SemanticMatches, 153 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 6067 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=3232, Invalid=20029, Unknown=3, NotChecked=606, Total=23870 [2022-09-16 11:15:57,249 INFO L413 NwaCegarLoop]: 597 mSDtfsCounter, 4183 mSDsluCounter, 14919 mSDsCounter, 0 mSdLazyCounter, 6706 mSolverCounterSat, 379 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4183 SdHoareTripleChecker+Valid, 14630 SdHoareTripleChecker+Invalid, 8042 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 379 IncrementalHoareTripleChecker+Valid, 6706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 957 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-09-16 11:15:57,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4183 Valid, 14630 Invalid, 8042 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [379 Valid, 6706 Invalid, 0 Unknown, 957 Unchecked, 3.1s Time] [2022-09-16 11:15:57,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164369 states. [2022-09-16 11:16:00,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164369 to 94401. [2022-09-16 11:16:00,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94401 states, 94395 states have (on average 3.6203824355103555) internal successors, (341746), 94400 states have internal predecessors, (341746), 0 states have call successors, (0), 0 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 11:16:01,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94401 states to 94401 states and 341746 transitions. [2022-09-16 11:16:01,564 INFO L78 Accepts]: Start accepts. Automaton has 94401 states and 341746 transitions. Word has length 117 [2022-09-16 11:16:01,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:16:01,564 INFO L495 AbstractCegarLoop]: Abstraction has 94401 states and 341746 transitions. [2022-09-16 11:16:01,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 6.511111111111111) internal successors, (293), 46 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 11:16:01,565 INFO L276 IsEmpty]: Start isEmpty. Operand 94401 states and 341746 transitions. [2022-09-16 11:16:01,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-09-16 11:16:01,574 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:16:01,574 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-09-16 11:16:01,593 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-09-16 11:16:01,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-09-16 11:16:01,775 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-09-16 11:16:01,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:16:01,777 INFO L85 PathProgramCache]: Analyzing trace with hash -829570286, now seen corresponding path program 5 times [2022-09-16 11:16:01,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:16:01,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973342124] [2022-09-16 11:16:01,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:16:01,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:16:01,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:16:01,970 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-09-16 11:16:01,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:16:01,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973342124] [2022-09-16 11:16:01,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973342124] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:16:01,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852619171] [2022-09-16 11:16:01,971 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-09-16 11:16:01,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:16:01,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:16:01,972 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:16:01,973 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-09-16 11:16:02,073 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-09-16 11:16:02,074 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:16:02,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 62 conjunts are in the unsatisfiable core [2022-09-16 11:16:02,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:16:02,115 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-16 11:16:02,373 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-09-16 11:16:02,373 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-09-16 11:16:02,761 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-09-16 11:16:03,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:16:03,179 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-09-16 11:16:03,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:16:03,296 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-09-16 11:16:03,973 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 42 [2022-09-16 11:16:04,027 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:16:04,027 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:16:05,151 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:16:05,152 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 94 treesize of output 70 [2022-09-16 11:16:05,175 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:16:05,175 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 2042 treesize of output 1890 [2022-09-16 11:16:05,187 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1758 treesize of output 1534 [2022-09-16 11:16:05,210 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:16:05,210 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1598 treesize of output 1308 [2022-09-16 11:16:05,230 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:16:05,231 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1282 treesize of output 1150 [2022-09-16 11:16:11,872 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-09-16 11:16:11,874 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-09-16 11:16:11,878 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-09-16 11:16:11,995 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:16:11,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1852619171] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:16:11,995 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:16:11,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 29, 29] total 70 [2022-09-16 11:16:11,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412224736] [2022-09-16 11:16:11,996 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:16:11,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2022-09-16 11:16:11,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:16:11,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2022-09-16 11:16:11,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=416, Invalid=4540, Unknown=14, NotChecked=0, Total=4970 [2022-09-16 11:16:11,997 INFO L87 Difference]: Start difference. First operand 94401 states and 341746 transitions. Second operand has 71 states, 70 states have (on average 4.571428571428571) internal successors, (320), 71 states have internal predecessors, (320), 0 states have call successors, (0), 0 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 11:16:15,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:16:15,294 INFO L93 Difference]: Finished difference Result 103970 states and 372774 transitions. [2022-09-16 11:16:15,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-09-16 11:16:15,295 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 70 states have (on average 4.571428571428571) internal successors, (320), 71 states have internal predecessors, (320), 0 states have call successors, (0), 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 117 [2022-09-16 11:16:15,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:16:15,671 INFO L225 Difference]: With dead ends: 103970 [2022-09-16 11:16:15,672 INFO L226 Difference]: Without dead ends: 103667 [2022-09-16 11:16:15,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3638 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=1040, Invalid=10936, Unknown=14, NotChecked=0, Total=11990 [2022-09-16 11:16:15,673 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 1257 mSDsluCounter, 4768 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1257 SdHoareTripleChecker+Valid, 4828 SdHoareTripleChecker+Invalid, 1210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 746 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-09-16 11:16:15,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1257 Valid, 4828 Invalid, 1210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 451 Invalid, 0 Unknown, 746 Unchecked, 0.2s Time] [2022-09-16 11:16:15,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103667 states. [2022-09-16 11:16:17,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103667 to 97095. [2022-09-16 11:16:17,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97095 states, 97089 states have (on average 3.617567386624643) internal successors, (351226), 97094 states have internal predecessors, (351226), 0 states have call successors, (0), 0 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 11:16:18,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97095 states to 97095 states and 351226 transitions. [2022-09-16 11:16:18,759 INFO L78 Accepts]: Start accepts. Automaton has 97095 states and 351226 transitions. Word has length 117 [2022-09-16 11:16:18,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:16:18,760 INFO L495 AbstractCegarLoop]: Abstraction has 97095 states and 351226 transitions. [2022-09-16 11:16:18,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 70 states have (on average 4.571428571428571) internal successors, (320), 71 states have internal predecessors, (320), 0 states have call successors, (0), 0 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 11:16:18,760 INFO L276 IsEmpty]: Start isEmpty. Operand 97095 states and 351226 transitions. [2022-09-16 11:16:18,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-09-16 11:16:18,770 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:16:18,770 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-09-16 11:16:18,788 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-09-16 11:16:18,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-09-16 11:16:18,971 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-09-16 11:16:18,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:16:18,971 INFO L85 PathProgramCache]: Analyzing trace with hash -849015656, now seen corresponding path program 6 times [2022-09-16 11:16:18,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:16:18,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978347421] [2022-09-16 11:16:18,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:16:18,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:16:18,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:16:19,501 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:16:19,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:16:19,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978347421] [2022-09-16 11:16:19,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978347421] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:16:19,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [893374331] [2022-09-16 11:16:19,502 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-09-16 11:16:19,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:16:19,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:16:19,503 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:16:19,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-09-16 11:16:19,605 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-09-16 11:16:19,605 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:16:19,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 55 conjunts are in the unsatisfiable core [2022-09-16 11:16:19,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:16:20,251 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-09-16 11:16:20,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:16:20,792 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-09-16 11:16:20,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:16:20,940 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-09-16 11:16:21,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:16:21,540 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 31 [2022-09-16 11:16:21,701 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:16:21,701 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:16:23,267 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:16:23,267 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 96 treesize of output 72 [2022-09-16 11:16:23,308 INFO L356 Elim1Store]: treesize reduction 12, result has 83.6 percent of original size [2022-09-16 11:16:23,308 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 2044 treesize of output 1952 [2022-09-16 11:16:23,338 INFO L356 Elim1Store]: treesize reduction 12, result has 67.6 percent of original size [2022-09-16 11:16:23,338 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1888 treesize of output 1696 [2022-09-16 11:16:23,366 INFO L356 Elim1Store]: treesize reduction 12, result has 67.6 percent of original size [2022-09-16 11:16:23,366 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1672 treesize of output 1588 [2022-09-16 11:16:23,384 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-09-16 11:16:23,384 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1462 treesize of output 1078 [2022-09-16 11:16:40,856 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:16:40,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [893374331] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:16:40,856 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:16:40,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 29, 29] total 77 [2022-09-16 11:16:40,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703303430] [2022-09-16 11:16:40,857 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:16:40,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2022-09-16 11:16:40,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:16:40,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2022-09-16 11:16:40,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=431, Invalid=5561, Unknown=14, NotChecked=0, Total=6006 [2022-09-16 11:16:40,858 INFO L87 Difference]: Start difference. First operand 97095 states and 351226 transitions. Second operand has 78 states, 77 states have (on average 4.2727272727272725) internal successors, (329), 78 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:16:45,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:16:45,428 INFO L93 Difference]: Finished difference Result 101768 states and 365718 transitions. [2022-09-16 11:16:45,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-09-16 11:16:45,429 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 77 states have (on average 4.2727272727272725) internal successors, (329), 78 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2022-09-16 11:16:45,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:16:46,065 INFO L225 Difference]: With dead ends: 101768 [2022-09-16 11:16:46,065 INFO L226 Difference]: Without dead ends: 101564 [2022-09-16 11:16:46,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 193 SyntacticMatches, 1 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4184 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=1235, Invalid=12091, Unknown=14, NotChecked=0, Total=13340 [2022-09-16 11:16:46,066 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 885 mSDsluCounter, 5138 mSDsCounter, 0 mSdLazyCounter, 575 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 885 SdHoareTripleChecker+Valid, 5186 SdHoareTripleChecker+Invalid, 1479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 870 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-09-16 11:16:46,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [885 Valid, 5186 Invalid, 1479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 575 Invalid, 0 Unknown, 870 Unchecked, 0.3s Time] [2022-09-16 11:16:46,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101564 states. [2022-09-16 11:16:48,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101564 to 97560. [2022-09-16 11:16:48,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97560 states, 97554 states have (on average 3.616171556266273) internal successors, (352772), 97559 states have internal predecessors, (352772), 0 states have call successors, (0), 0 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 11:16:48,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97560 states to 97560 states and 352772 transitions. [2022-09-16 11:16:48,919 INFO L78 Accepts]: Start accepts. Automaton has 97560 states and 352772 transitions. Word has length 117 [2022-09-16 11:16:49,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:16:49,188 INFO L495 AbstractCegarLoop]: Abstraction has 97560 states and 352772 transitions. [2022-09-16 11:16:49,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 77 states have (on average 4.2727272727272725) internal successors, (329), 78 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:16:49,188 INFO L276 IsEmpty]: Start isEmpty. Operand 97560 states and 352772 transitions. [2022-09-16 11:16:49,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-09-16 11:16:49,198 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:16:49,198 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-09-16 11:16:49,215 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-09-16 11:16:49,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:16:49,400 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-09-16 11:16:49,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:16:49,403 INFO L85 PathProgramCache]: Analyzing trace with hash -2123474636, now seen corresponding path program 7 times [2022-09-16 11:16:49,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:16:49,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816552300] [2022-09-16 11:16:49,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:16:49,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:16:49,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:16:50,455 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:16:50,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:16:50,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816552300] [2022-09-16 11:16:50,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816552300] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:16:50,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328176985] [2022-09-16 11:16:50,455 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-09-16 11:16:50,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:16:50,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:16:50,456 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:16:50,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-09-16 11:16:50,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:16:50,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 58 conjunts are in the unsatisfiable core [2022-09-16 11:16:50,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:16:50,623 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-16 11:16:50,807 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-09-16 11:16:50,807 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-09-16 11:16:51,520 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-09-16 11:16:51,677 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:16:51,678 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:16:51,933 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:16:51,933 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 104 treesize of output 122 [2022-09-16 11:16:51,943 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:16:51,944 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 60 [2022-09-16 11:16:53,432 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:16:53,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [328176985] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:16:53,432 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:16:53,433 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 21, 21] total 68 [2022-09-16 11:16:53,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377189367] [2022-09-16 11:16:53,433 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:16:53,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2022-09-16 11:16:53,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:16:53,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2022-09-16 11:16:53,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=490, Invalid=4201, Unknown=1, NotChecked=0, Total=4692 [2022-09-16 11:16:53,434 INFO L87 Difference]: Start difference. First operand 97560 states and 352772 transitions. Second operand has 69 states, 68 states have (on average 4.838235294117647) internal successors, (329), 69 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:17:26,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:17:26,395 INFO L93 Difference]: Finished difference Result 442539 states and 1554213 transitions. [2022-09-16 11:17:26,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 174 states. [2022-09-16 11:17:26,396 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 68 states have (on average 4.838235294117647) internal successors, (329), 69 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2022-09-16 11:17:26,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:17:29,608 INFO L225 Difference]: With dead ends: 442539 [2022-09-16 11:17:29,609 INFO L226 Difference]: Without dead ends: 430815 [2022-09-16 11:17:29,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 539 GetRequests, 210 SyntacticMatches, 99 SemanticMatches, 230 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33212 ImplicationChecksByTransitivity, 25.9s TimeCoverageRelationStatistics Valid=6904, Invalid=46687, Unknown=1, NotChecked=0, Total=53592 [2022-09-16 11:17:29,612 INFO L413 NwaCegarLoop]: 415 mSDtfsCounter, 7184 mSDsluCounter, 11518 mSDsCounter, 0 mSdLazyCounter, 5959 mSolverCounterSat, 628 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7184 SdHoareTripleChecker+Valid, 11017 SdHoareTripleChecker+Invalid, 8350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 628 IncrementalHoareTripleChecker+Valid, 5959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1763 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-09-16 11:17:29,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7184 Valid, 11017 Invalid, 8350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [628 Valid, 5959 Invalid, 0 Unknown, 1763 Unchecked, 3.5s Time] [2022-09-16 11:17:30,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430815 states. [2022-09-16 11:17:39,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430815 to 138130. [2022-09-16 11:17:39,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138130 states, 138124 states have (on average 3.6240334771654457) internal successors, (500566), 138129 states have internal predecessors, (500566), 0 states have call successors, (0), 0 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 11:17:40,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138130 states to 138130 states and 500566 transitions. [2022-09-16 11:17:40,761 INFO L78 Accepts]: Start accepts. Automaton has 138130 states and 500566 transitions. Word has length 117 [2022-09-16 11:17:40,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:17:40,761 INFO L495 AbstractCegarLoop]: Abstraction has 138130 states and 500566 transitions. [2022-09-16 11:17:40,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 68 states have (on average 4.838235294117647) internal successors, (329), 69 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:17:40,761 INFO L276 IsEmpty]: Start isEmpty. Operand 138130 states and 500566 transitions. [2022-09-16 11:17:40,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-09-16 11:17:40,773 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:17:40,773 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-09-16 11:17:40,792 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-09-16 11:17:40,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:17:40,976 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-09-16 11:17:40,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:17:40,977 INFO L85 PathProgramCache]: Analyzing trace with hash -520180410, now seen corresponding path program 1 times [2022-09-16 11:17:40,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:17:40,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928489860] [2022-09-16 11:17:40,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:17:40,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:17:40,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:17:41,977 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:17:41,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:17:41,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928489860] [2022-09-16 11:17:41,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928489860] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:17:41,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [821042270] [2022-09-16 11:17:41,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:17:41,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:17:41,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:17:41,979 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:17:41,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-09-16 11:17:42,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:17:42,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 58 conjunts are in the unsatisfiable core [2022-09-16 11:17:42,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:17:42,096 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-16 11:17:42,284 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-09-16 11:17:42,285 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-09-16 11:17:43,114 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 32 [2022-09-16 11:17:43,217 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:17:43,218 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:17:43,451 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:17:43,452 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 81 treesize of output 99 [2022-09-16 11:17:43,456 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:17:43,457 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 7 [2022-09-16 11:17:44,837 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:17:44,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [821042270] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:17:44,837 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:17:44,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 21, 21] total 71 [2022-09-16 11:17:44,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141914716] [2022-09-16 11:17:44,837 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:17:44,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2022-09-16 11:17:44,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:17:44,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2022-09-16 11:17:44,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=540, Invalid=4571, Unknown=1, NotChecked=0, Total=5112 [2022-09-16 11:17:44,839 INFO L87 Difference]: Start difference. First operand 138130 states and 500566 transitions. Second operand has 72 states, 71 states have (on average 4.676056338028169) internal successors, (332), 72 states have internal predecessors, (332), 0 states have call successors, (0), 0 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 11:17:53,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:17:53,056 INFO L93 Difference]: Finished difference Result 258304 states and 918897 transitions. [2022-09-16 11:17:53,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-09-16 11:17:53,057 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 71 states have (on average 4.676056338028169) internal successors, (332), 72 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2022-09-16 11:17:53,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:17:54,285 INFO L225 Difference]: With dead ends: 258304 [2022-09-16 11:17:54,285 INFO L226 Difference]: Without dead ends: 255661 [2022-09-16 11:17:54,286 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 208 SyntacticMatches, 10 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6721 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=2448, Invalid=15617, Unknown=25, NotChecked=0, Total=18090 [2022-09-16 11:17:54,286 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 4343 mSDsluCounter, 6872 mSDsCounter, 0 mSdLazyCounter, 2948 mSolverCounterSat, 216 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4343 SdHoareTripleChecker+Valid, 6617 SdHoareTripleChecker+Invalid, 4442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 216 IncrementalHoareTripleChecker+Valid, 2948 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1278 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-09-16 11:17:54,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4343 Valid, 6617 Invalid, 4442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [216 Valid, 2948 Invalid, 0 Unknown, 1278 Unchecked, 1.4s Time] [2022-09-16 11:17:54,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255661 states. [2022-09-16 11:18:00,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255661 to 154885. [2022-09-16 11:18:00,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154885 states, 154879 states have (on average 3.6527805577257086) internal successors, (565739), 154884 states have internal predecessors, (565739), 0 states have call successors, (0), 0 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 11:18:01,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154885 states to 154885 states and 565739 transitions. [2022-09-16 11:18:01,379 INFO L78 Accepts]: Start accepts. Automaton has 154885 states and 565739 transitions. Word has length 118 [2022-09-16 11:18:01,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:18:01,379 INFO L495 AbstractCegarLoop]: Abstraction has 154885 states and 565739 transitions. [2022-09-16 11:18:01,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 71 states have (on average 4.676056338028169) internal successors, (332), 72 states have internal predecessors, (332), 0 states have call successors, (0), 0 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 11:18:01,379 INFO L276 IsEmpty]: Start isEmpty. Operand 154885 states and 565739 transitions. [2022-09-16 11:18:01,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-09-16 11:18:01,398 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:18:01,398 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2022-09-16 11:18:01,416 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-09-16 11:18:01,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2022-09-16 11:18:01,610 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-09-16 11:18:01,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:18:01,610 INFO L85 PathProgramCache]: Analyzing trace with hash -2061170002, now seen corresponding path program 8 times [2022-09-16 11:18:01,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:18:01,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15662105] [2022-09-16 11:18:01,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:18:01,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:18:01,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:18:01,830 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-09-16 11:18:01,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:18:01,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15662105] [2022-09-16 11:18:01,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15662105] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:18:01,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1970577677] [2022-09-16 11:18:01,831 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:18:01,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:18:01,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:18:01,832 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:18:01,875 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-09-16 11:18:01,958 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-09-16 11:18:01,958 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:18:01,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 62 conjunts are in the unsatisfiable core [2022-09-16 11:18:01,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:18:01,987 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-16 11:18:02,013 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-09-16 11:18:02,013 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-09-16 11:18:02,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:18:02,317 INFO L356 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2022-09-16 11:18:02,317 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 14 [2022-09-16 11:18:02,830 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-09-16 11:18:03,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:18:03,258 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-09-16 11:18:03,382 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-09-16 11:18:03,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:18:03,888 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 40 [2022-09-16 11:18:03,968 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:18:03,968 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:18:05,041 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:18:05,042 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 93 treesize of output 69 [2022-09-16 11:18:05,089 INFO L356 Elim1Store]: treesize reduction 12, result has 83.6 percent of original size [2022-09-16 11:18:05,089 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 7772 treesize of output 7040 [2022-09-16 11:18:05,135 INFO L356 Elim1Store]: treesize reduction 12, result has 67.6 percent of original size [2022-09-16 11:18:05,135 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 6976 treesize of output 6412 [2022-09-16 11:18:05,180 INFO L356 Elim1Store]: treesize reduction 12, result has 67.6 percent of original size [2022-09-16 11:18:05,181 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 6388 treesize of output 5236 [2022-09-16 11:18:05,209 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5110 treesize of output 4342