/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.error.function.in.sv-comp.mode false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/pthread-deagle/floating_read-20.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-53ca081-m [2022-09-16 11:20:05,645 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-16 11:20:05,646 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-16 11:20:05,684 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-16 11:20:05,684 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-16 11:20:05,687 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-16 11:20:05,690 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-16 11:20:05,694 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-16 11:20:05,696 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-16 11:20:05,700 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-16 11:20:05,701 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-16 11:20:05,702 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-16 11:20:05,702 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-16 11:20:05,704 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-16 11:20:05,705 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-16 11:20:05,706 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-16 11:20:05,712 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-16 11:20:05,712 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-16 11:20:05,713 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-16 11:20:05,715 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-16 11:20:05,716 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-16 11:20:05,717 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-16 11:20:05,719 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-16 11:20:05,720 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-16 11:20:05,729 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-09-16 11:20:05,731 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-16 11:20:05,732 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-16 11:20:05,732 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-16 11:20:05,733 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-16 11:20:05,734 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-16 11:20:05,734 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-16 11:20:05,734 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-16 11:20:05,735 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-16 11:20:05,735 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-16 11:20:05,736 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-16 11:20:05,736 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-16 11:20:05,740 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 11:20:05,770 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-16 11:20:05,771 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-16 11:20:05,771 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-09-16 11:20:05,771 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-09-16 11:20:05,772 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-16 11:20:05,772 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-16 11:20:05,772 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-16 11:20:05,773 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-16 11:20:05,773 INFO L138 SettingsManager]: * Use SBE=true [2022-09-16 11:20:05,773 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-16 11:20:05,774 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-16 11:20:05,774 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-16 11:20:05,774 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-16 11:20:05,774 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-16 11:20:05,774 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-16 11:20:05,774 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-16 11:20:05,774 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-16 11:20:05,774 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-16 11:20:05,774 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-16 11:20:05,775 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-16 11:20:05,775 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-16 11:20:05,775 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-16 11:20:05,775 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-16 11:20:05,775 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-16 11:20:05,775 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-16 11:20:05,775 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:20:05,775 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-16 11:20:05,776 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-16 11:20:05,776 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-16 11:20:05,776 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-16 11:20:05,776 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-16 11:20:05,776 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-16 11:20:05,776 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-09-16 11:20:05,776 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of error function in SV-COMP mode -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2022-09-16 11:20:06,001 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-16 11:20:06,028 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-16 11:20:06,031 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-16 11:20:06,032 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-16 11:20:06,035 INFO L275 PluginConnector]: CDTParser initialized [2022-09-16 11:20:06,036 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-deagle/floating_read-20.i [2022-09-16 11:20:06,092 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49702eade/4b316610e86e44b385a3533da6175d99/FLAGb95a50949 [2022-09-16 11:20:06,622 INFO L306 CDTParser]: Found 1 translation units. [2022-09-16 11:20:06,622 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/floating_read-20.i [2022-09-16 11:20:06,635 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49702eade/4b316610e86e44b385a3533da6175d99/FLAGb95a50949 [2022-09-16 11:20:07,110 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49702eade/4b316610e86e44b385a3533da6175d99 [2022-09-16 11:20:07,112 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-16 11:20:07,113 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-16 11:20:07,115 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-16 11:20:07,115 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-16 11:20:07,120 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-16 11:20:07,121 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:20:07" (1/1) ... [2022-09-16 11:20:07,122 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@280e8284 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:20:07, skipping insertion in model container [2022-09-16 11:20:07,122 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:20:07" (1/1) ... [2022-09-16 11:20:07,128 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-16 11:20:07,183 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-16 11:20:07,433 WARN L1550 CHandler]: Possible shadowing of function thread [2022-09-16 11:20:07,450 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/floating_read-20.i[31197,31210] [2022-09-16 11:20:07,457 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:20:07,463 INFO L203 MainTranslator]: Completed pre-run [2022-09-16 11:20:07,510 WARN L1550 CHandler]: Possible shadowing of function thread [2022-09-16 11:20:07,513 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/floating_read-20.i[31197,31210] [2022-09-16 11:20:07,514 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:20:07,537 INFO L208 MainTranslator]: Completed translation [2022-09-16 11:20:07,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:20:07 WrapperNode [2022-09-16 11:20:07,538 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-16 11:20:07,539 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-16 11:20:07,539 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-16 11:20:07,539 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-16 11:20:07,549 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:20:07" (1/1) ... [2022-09-16 11:20:07,583 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:20:07" (1/1) ... [2022-09-16 11:20:07,606 INFO L138 Inliner]: procedures = 162, calls = 17, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 56 [2022-09-16 11:20:07,607 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-16 11:20:07,608 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-16 11:20:07,608 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-16 11:20:07,608 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-16 11:20:07,614 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:20:07" (1/1) ... [2022-09-16 11:20:07,615 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:20:07" (1/1) ... [2022-09-16 11:20:07,617 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:20:07" (1/1) ... [2022-09-16 11:20:07,617 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:20:07" (1/1) ... [2022-09-16 11:20:07,622 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:20:07" (1/1) ... [2022-09-16 11:20:07,625 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:20:07" (1/1) ... [2022-09-16 11:20:07,626 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:20:07" (1/1) ... [2022-09-16 11:20:07,628 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-16 11:20:07,629 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-16 11:20:07,629 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-16 11:20:07,629 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-16 11:20:07,630 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:20:07" (1/1) ... [2022-09-16 11:20:07,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:20:07,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:20:07,661 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 11:20:07,664 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 11:20:07,699 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-16 11:20:07,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-16 11:20:07,700 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-09-16 11:20:07,700 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-16 11:20:07,700 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-16 11:20:07,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-16 11:20:07,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-16 11:20:07,702 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2022-09-16 11:20:07,702 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2022-09-16 11:20:07,703 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-09-16 11:20:07,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-16 11:20:07,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-16 11:20:07,704 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 11:20:07,904 INFO L234 CfgBuilder]: Building ICFG [2022-09-16 11:20:07,905 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-16 11:20:08,064 INFO L275 CfgBuilder]: Performing block encoding [2022-09-16 11:20:08,070 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-16 11:20:08,070 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-09-16 11:20:08,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:20:08 BoogieIcfgContainer [2022-09-16 11:20:08,072 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-16 11:20:08,074 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-16 11:20:08,074 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-16 11:20:08,078 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-16 11:20:08,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 11:20:07" (1/3) ... [2022-09-16 11:20:08,079 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78d009e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:20:08, skipping insertion in model container [2022-09-16 11:20:08,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:20:07" (2/3) ... [2022-09-16 11:20:08,080 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78d009e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:20:08, skipping insertion in model container [2022-09-16 11:20:08,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:20:08" (3/3) ... [2022-09-16 11:20:08,081 INFO L112 eAbstractionObserver]: Analyzing ICFG floating_read-20.i [2022-09-16 11:20:08,089 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-09-16 11:20:08,097 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-16 11:20:08,098 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-09-16 11:20:08,098 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-16 11:20:08,157 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-09-16 11:20:08,195 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 65 places, 66 transitions, 140 flow [2022-09-16 11:20:08,240 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 214 states, 207 states have (on average 1.8067632850241546) internal successors, (374), 213 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:20:08,265 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 11:20:08,275 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;@6d70a144, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 11:20:08,275 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-09-16 11:20:08,280 INFO L276 IsEmpty]: Start isEmpty. Operand has 214 states, 207 states have (on average 1.8067632850241546) internal successors, (374), 213 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:20:08,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-09-16 11:20:08,289 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:20:08,290 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] [2022-09-16 11:20:08,291 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-09-16 11:20:08,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:20:08,296 INFO L85 PathProgramCache]: Analyzing trace with hash 90008394, now seen corresponding path program 1 times [2022-09-16 11:20:08,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:20:08,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533556874] [2022-09-16 11:20:08,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:20:08,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:20:08,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:20:08,551 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 11:20:08,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:20:08,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533556874] [2022-09-16 11:20:08,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533556874] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:20:08,553 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:20:08,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:20:08,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4514899] [2022-09-16 11:20:08,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:20:08,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:20:08,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:20:08,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:20:08,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:20:08,597 INFO L87 Difference]: Start difference. First operand has 214 states, 207 states have (on average 1.8067632850241546) internal successors, (374), 213 states have internal predecessors, (374), 0 states have call successors, (0), 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 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:20:08,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:20:08,678 INFO L93 Difference]: Finished difference Result 192 states and 316 transitions. [2022-09-16 11:20:08,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:20:08,681 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 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 29 [2022-09-16 11:20:08,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:20:08,694 INFO L225 Difference]: With dead ends: 192 [2022-09-16 11:20:08,694 INFO L226 Difference]: Without dead ends: 139 [2022-09-16 11:20:08,695 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 11:20:08,701 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 20 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-09-16 11:20:08,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 154 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-09-16 11:20:08,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2022-09-16 11:20:08,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2022-09-16 11:20:08,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 136 states have (on average 1.6397058823529411) internal successors, (223), 138 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:20:08,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 223 transitions. [2022-09-16 11:20:08,761 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 223 transitions. Word has length 29 [2022-09-16 11:20:08,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:20:08,761 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 223 transitions. [2022-09-16 11:20:08,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:20:08,762 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 223 transitions. [2022-09-16 11:20:08,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-09-16 11:20:08,764 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:20:08,764 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-09-16 11:20:08,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-16 11:20:08,765 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-09-16 11:20:08,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:20:08,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1159646497, now seen corresponding path program 1 times [2022-09-16 11:20:08,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:20:08,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141383418] [2022-09-16 11:20:08,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:20:08,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:20:08,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-16 11:20:08,815 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-09-16 11:20:08,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-16 11:20:08,875 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-09-16 11:20:08,876 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-09-16 11:20:08,877 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2022-09-16 11:20:08,880 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 5 remaining) [2022-09-16 11:20:08,880 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 5 remaining) [2022-09-16 11:20:08,880 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 5 remaining) [2022-09-16 11:20:08,881 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 5 remaining) [2022-09-16 11:20:08,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-16 11:20:08,890 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-09-16 11:20:08,892 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-09-16 11:20:08,892 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-09-16 11:20:08,919 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-09-16 11:20:08,924 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 73 places, 73 transitions, 164 flow [2022-09-16 11:20:08,962 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1408 states, 1393 states have (on average 2.529791816223977) internal successors, (3524), 1407 states have internal predecessors, (3524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:20:08,964 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 11:20:08,965 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;@6d70a144, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 11:20:08,965 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-09-16 11:20:08,969 INFO L276 IsEmpty]: Start isEmpty. Operand has 1408 states, 1393 states have (on average 2.529791816223977) internal successors, (3524), 1407 states have internal predecessors, (3524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:20:08,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-09-16 11:20:08,970 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:20:08,971 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] [2022-09-16 11:20:08,972 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-09-16 11:20:08,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:20:08,973 INFO L85 PathProgramCache]: Analyzing trace with hash -307334824, now seen corresponding path program 1 times [2022-09-16 11:20:08,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:20:08,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706907193] [2022-09-16 11:20:08,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:20:08,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:20:09,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:20:09,040 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 11:20:09,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:20:09,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706907193] [2022-09-16 11:20:09,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706907193] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:20:09,041 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:20:09,041 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:20:09,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550978215] [2022-09-16 11:20:09,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:20:09,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:20:09,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:20:09,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:20:09,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:20:09,046 INFO L87 Difference]: Start difference. First operand has 1408 states, 1393 states have (on average 2.529791816223977) internal successors, (3524), 1407 states have internal predecessors, (3524), 0 states have call successors, (0), 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 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:20:09,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:20:09,112 INFO L93 Difference]: Finished difference Result 1350 states and 3256 transitions. [2022-09-16 11:20:09,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:20:09,113 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 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 29 [2022-09-16 11:20:09,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:20:09,124 INFO L225 Difference]: With dead ends: 1350 [2022-09-16 11:20:09,124 INFO L226 Difference]: Without dead ends: 967 [2022-09-16 11:20:09,124 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 11:20:09,126 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 20 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-09-16 11:20:09,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 177 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-09-16 11:20:09,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 967 states. [2022-09-16 11:20:09,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 967 to 967. [2022-09-16 11:20:09,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 967 states, 958 states have (on average 2.419624217118998) internal successors, (2318), 966 states have internal predecessors, (2318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:20:09,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 967 states to 967 states and 2318 transitions. [2022-09-16 11:20:09,225 INFO L78 Accepts]: Start accepts. Automaton has 967 states and 2318 transitions. Word has length 29 [2022-09-16 11:20:09,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:20:09,226 INFO L495 AbstractCegarLoop]: Abstraction has 967 states and 2318 transitions. [2022-09-16 11:20:09,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:20:09,226 INFO L276 IsEmpty]: Start isEmpty. Operand 967 states and 2318 transitions. [2022-09-16 11:20:09,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-09-16 11:20:09,227 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:20:09,228 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:20:09,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-09-16 11:20:09,228 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-09-16 11:20:09,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:20:09,229 INFO L85 PathProgramCache]: Analyzing trace with hash 284383053, now seen corresponding path program 1 times [2022-09-16 11:20:09,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:20:09,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431269805] [2022-09-16 11:20:09,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:20:09,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:20:09,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:20:09,273 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:20:09,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:20:09,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431269805] [2022-09-16 11:20:09,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431269805] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:20:09,274 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:20:09,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:20:09,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240918374] [2022-09-16 11:20:09,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:20:09,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:20:09,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:20:09,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:20:09,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:20:09,277 INFO L87 Difference]: Start difference. First operand 967 states and 2318 transitions. Second operand has 4 states, 3 states have (on average 13.666666666666666) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:20:09,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:20:09,328 INFO L93 Difference]: Finished difference Result 931 states and 2222 transitions. [2022-09-16 11:20:09,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:20:09,329 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 13.666666666666666) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2022-09-16 11:20:09,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:20:09,336 INFO L225 Difference]: With dead ends: 931 [2022-09-16 11:20:09,337 INFO L226 Difference]: Without dead ends: 931 [2022-09-16 11:20:09,337 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-09-16 11:20:09,346 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 39 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-09-16 11:20:09,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 147 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-09-16 11:20:09,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 931 states. [2022-09-16 11:20:09,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 931 to 931. [2022-09-16 11:20:09,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 931 states, 923 states have (on average 2.4073672806067172) internal successors, (2222), 930 states have internal predecessors, (2222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:20:09,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 931 states to 931 states and 2222 transitions. [2022-09-16 11:20:09,387 INFO L78 Accepts]: Start accepts. Automaton has 931 states and 2222 transitions. Word has length 41 [2022-09-16 11:20:09,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:20:09,388 INFO L495 AbstractCegarLoop]: Abstraction has 931 states and 2222 transitions. [2022-09-16 11:20:09,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 13.666666666666666) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:20:09,388 INFO L276 IsEmpty]: Start isEmpty. Operand 931 states and 2222 transitions. [2022-09-16 11:20:09,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-09-16 11:20:09,394 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:20:09,395 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] [2022-09-16 11:20:09,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-09-16 11:20:09,395 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-09-16 11:20:09,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:20:09,395 INFO L85 PathProgramCache]: Analyzing trace with hash 225940277, now seen corresponding path program 1 times [2022-09-16 11:20:09,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:20:09,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251077956] [2022-09-16 11:20:09,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:20:09,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:20:09,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:20:09,454 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:20:09,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:20:09,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251077956] [2022-09-16 11:20:09,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251077956] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:20:09,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1145494968] [2022-09-16 11:20:09,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:20:09,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:20:09,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:20:09,457 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 11:20:09,465 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 11:20:09,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:20:09,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:20:09,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:20:09,630 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:20:09,630 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:20:09,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1145494968] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:20:09,631 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:20:09,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 11:20:09,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145640490] [2022-09-16 11:20:09,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:20:09,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:20:09,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:20:09,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:20:09,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:20:09,633 INFO L87 Difference]: Start difference. First operand 931 states and 2222 transitions. Second operand has 6 states, 5 states have (on average 8.4) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:20:09,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:20:09,701 INFO L93 Difference]: Finished difference Result 895 states and 2126 transitions. [2022-09-16 11:20:09,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:20:09,702 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.4) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2022-09-16 11:20:09,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:20:09,706 INFO L225 Difference]: With dead ends: 895 [2022-09-16 11:20:09,707 INFO L226 Difference]: Without dead ends: 895 [2022-09-16 11:20:09,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-09-16 11:20:09,708 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 65 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-09-16 11:20:09,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 188 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-09-16 11:20:09,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 895 states. [2022-09-16 11:20:09,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 895 to 895. [2022-09-16 11:20:09,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 895 states, 888 states have (on average 2.394144144144144) internal successors, (2126), 894 states have internal predecessors, (2126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:20:09,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 895 states to 895 states and 2126 transitions. [2022-09-16 11:20:09,735 INFO L78 Accepts]: Start accepts. Automaton has 895 states and 2126 transitions. Word has length 42 [2022-09-16 11:20:09,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:20:09,740 INFO L495 AbstractCegarLoop]: Abstraction has 895 states and 2126 transitions. [2022-09-16 11:20:09,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.4) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:20:09,741 INFO L276 IsEmpty]: Start isEmpty. Operand 895 states and 2126 transitions. [2022-09-16 11:20:09,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-09-16 11:20:09,742 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:20:09,742 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] [2022-09-16 11:20:09,768 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-09-16 11:20:09,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:20:09,964 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-09-16 11:20:09,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:20:09,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1561590376, now seen corresponding path program 1 times [2022-09-16 11:20:09,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:20:09,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786949509] [2022-09-16 11:20:09,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:20:09,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:20:09,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:20:10,033 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 11:20:10,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:20:10,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786949509] [2022-09-16 11:20:10,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786949509] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:20:10,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356977157] [2022-09-16 11:20:10,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:20:10,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:20:10,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:20:10,035 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 11:20:10,055 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 11:20:10,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:20:10,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 4 conjunts are in the unsatisfiable core [2022-09-16 11:20:10,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:20:10,161 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 11:20:10,162 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:20:10,209 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 11:20:10,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [356977157] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:20:10,210 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:20:10,210 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-09-16 11:20:10,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393822864] [2022-09-16 11:20:10,210 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:20:10,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-16 11:20:10,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:20:10,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-16 11:20:10,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-09-16 11:20:10,211 INFO L87 Difference]: Start difference. First operand 895 states and 2126 transitions. Second operand has 10 states, 10 states have (on average 8.2) internal successors, (82), 10 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:20:10,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:20:10,277 INFO L93 Difference]: Finished difference Result 565 states and 1369 transitions. [2022-09-16 11:20:10,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-16 11:20:10,277 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.2) internal successors, (82), 10 states have internal predecessors, (82), 0 states have call successors, (0), 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 46 [2022-09-16 11:20:10,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:20:10,280 INFO L225 Difference]: With dead ends: 565 [2022-09-16 11:20:10,280 INFO L226 Difference]: Without dead ends: 565 [2022-09-16 11:20:10,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2022-09-16 11:20:10,281 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 109 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-09-16 11:20:10,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 246 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-09-16 11:20:10,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2022-09-16 11:20:10,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 565. [2022-09-16 11:20:10,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 564 states have (on average 2.4273049645390072) internal successors, (1369), 564 states have internal predecessors, (1369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:20:10,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 1369 transitions. [2022-09-16 11:20:10,297 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 1369 transitions. Word has length 46 [2022-09-16 11:20:10,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:20:10,297 INFO L495 AbstractCegarLoop]: Abstraction has 565 states and 1369 transitions. [2022-09-16 11:20:10,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.2) internal successors, (82), 10 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:20:10,298 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 1369 transitions. [2022-09-16 11:20:10,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-09-16 11:20:10,299 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:20:10,300 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2022-09-16 11:20:10,328 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 11:20:10,520 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,SelfDestructingSolverStorable5 [2022-09-16 11:20:10,521 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-09-16 11:20:10,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:20:10,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1781391463, now seen corresponding path program 1 times [2022-09-16 11:20:10,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:20:10,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683075866] [2022-09-16 11:20:10,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:20:10,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:20:10,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-16 11:20:10,541 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-09-16 11:20:10,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-16 11:20:10,567 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-09-16 11:20:10,568 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-09-16 11:20:10,568 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2022-09-16 11:20:10,568 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 5 remaining) [2022-09-16 11:20:10,568 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 5 remaining) [2022-09-16 11:20:10,568 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 5 remaining) [2022-09-16 11:20:10,569 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 5 remaining) [2022-09-16 11:20:10,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-09-16 11:20:10,569 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-09-16 11:20:10,569 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-09-16 11:20:10,569 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-09-16 11:20:10,584 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-09-16 11:20:10,587 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 81 places, 80 transitions, 190 flow [2022-09-16 11:20:10,871 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 9328 states, 9299 states have (on average 3.2664802666953436) internal successors, (30375), 9327 states have internal predecessors, (30375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:20:10,872 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 11:20:10,872 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;@6d70a144, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 11:20:10,873 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-09-16 11:20:10,910 INFO L276 IsEmpty]: Start isEmpty. Operand has 9328 states, 9299 states have (on average 3.2664802666953436) internal successors, (30375), 9327 states have internal predecessors, (30375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:20:10,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-09-16 11:20:10,912 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:20:10,912 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] [2022-09-16 11:20:10,912 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-09-16 11:20:10,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:20:10,913 INFO L85 PathProgramCache]: Analyzing trace with hash -272540883, now seen corresponding path program 1 times [2022-09-16 11:20:10,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:20:10,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402827808] [2022-09-16 11:20:10,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:20:10,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:20:10,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:20:10,943 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 11:20:10,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:20:10,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402827808] [2022-09-16 11:20:10,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402827808] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:20:10,943 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:20:10,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:20:10,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235062508] [2022-09-16 11:20:10,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:20:10,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:20:10,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:20:10,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:20:10,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:20:10,991 INFO L87 Difference]: Start difference. First operand has 9328 states, 9299 states have (on average 3.2664802666953436) internal successors, (30375), 9327 states have internal predecessors, (30375), 0 states have call successors, (0), 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 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:20:11,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:20:11,129 INFO L93 Difference]: Finished difference Result 9054 states and 28625 transitions. [2022-09-16 11:20:11,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:20:11,133 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 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 29 [2022-09-16 11:20:11,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:20:11,229 INFO L225 Difference]: With dead ends: 9054 [2022-09-16 11:20:11,229 INFO L226 Difference]: Without dead ends: 6397 [2022-09-16 11:20:11,230 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 11:20:11,232 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 20 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-09-16 11:20:11,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 192 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-09-16 11:20:11,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6397 states. [2022-09-16 11:20:11,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6397 to 6397. [2022-09-16 11:20:11,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6397 states, 6378 states have (on average 3.1699592348698653) internal successors, (20218), 6396 states have internal predecessors, (20218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:20:11,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6397 states to 6397 states and 20218 transitions. [2022-09-16 11:20:11,522 INFO L78 Accepts]: Start accepts. Automaton has 6397 states and 20218 transitions. Word has length 29 [2022-09-16 11:20:11,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:20:11,522 INFO L495 AbstractCegarLoop]: Abstraction has 6397 states and 20218 transitions. [2022-09-16 11:20:11,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:20:11,522 INFO L276 IsEmpty]: Start isEmpty. Operand 6397 states and 20218 transitions. [2022-09-16 11:20:11,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-09-16 11:20:11,523 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:20:11,523 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:20:11,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-09-16 11:20:11,524 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-09-16 11:20:11,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:20:11,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1659788071, now seen corresponding path program 1 times [2022-09-16 11:20:11,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:20:11,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723136059] [2022-09-16 11:20:11,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:20:11,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:20:11,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:20:11,567 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:20:11,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:20:11,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723136059] [2022-09-16 11:20:11,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723136059] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:20:11,568 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:20:11,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:20:11,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659357588] [2022-09-16 11:20:11,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:20:11,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:20:11,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:20:11,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:20:11,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:20:11,570 INFO L87 Difference]: Start difference. First operand 6397 states and 20218 transitions. Second operand has 4 states, 3 states have (on average 13.666666666666666) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:20:11,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:20:11,725 INFO L93 Difference]: Finished difference Result 6145 states and 19366 transitions. [2022-09-16 11:20:11,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:20:11,726 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 13.666666666666666) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2022-09-16 11:20:11,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:20:11,784 INFO L225 Difference]: With dead ends: 6145 [2022-09-16 11:20:11,784 INFO L226 Difference]: Without dead ends: 6145 [2022-09-16 11:20:11,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-09-16 11:20:11,785 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 55 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-09-16 11:20:11,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 167 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-09-16 11:20:11,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6145 states. [2022-09-16 11:20:11,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6145 to 6145. [2022-09-16 11:20:11,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6145 states, 6128 states have (on average 3.160248041775457) internal successors, (19366), 6144 states have internal predecessors, (19366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:20:12,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6145 states to 6145 states and 19366 transitions. [2022-09-16 11:20:12,022 INFO L78 Accepts]: Start accepts. Automaton has 6145 states and 19366 transitions. Word has length 41 [2022-09-16 11:20:12,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:20:12,023 INFO L495 AbstractCegarLoop]: Abstraction has 6145 states and 19366 transitions. [2022-09-16 11:20:12,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 13.666666666666666) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:20:12,023 INFO L276 IsEmpty]: Start isEmpty. Operand 6145 states and 19366 transitions. [2022-09-16 11:20:12,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-09-16 11:20:12,024 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:20:12,024 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] [2022-09-16 11:20:12,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-09-16 11:20:12,025 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-09-16 11:20:12,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:20:12,025 INFO L85 PathProgramCache]: Analyzing trace with hash -86177045, now seen corresponding path program 1 times [2022-09-16 11:20:12,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:20:12,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944872963] [2022-09-16 11:20:12,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:20:12,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:20:12,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:20:12,113 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:20:12,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:20:12,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944872963] [2022-09-16 11:20:12,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944872963] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:20:12,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555575151] [2022-09-16 11:20:12,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:20:12,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:20:12,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:20:12,116 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 11:20:12,126 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 11:20:12,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:20:12,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:20:12,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:20:12,246 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:20:12,247 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:20:12,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [555575151] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:20:12,247 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:20:12,247 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 11:20:12,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932156997] [2022-09-16 11:20:12,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:20:12,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:20:12,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:20:12,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:20:12,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:20:12,248 INFO L87 Difference]: Start difference. First operand 6145 states and 19366 transitions. Second operand has 6 states, 5 states have (on average 8.4) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:20:12,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:20:12,374 INFO L93 Difference]: Finished difference Result 5893 states and 18514 transitions. [2022-09-16 11:20:12,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:20:12,374 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.4) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2022-09-16 11:20:12,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:20:12,456 INFO L225 Difference]: With dead ends: 5893 [2022-09-16 11:20:12,456 INFO L226 Difference]: Without dead ends: 5893 [2022-09-16 11:20:12,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 40 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 11:20:12,457 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 72 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-09-16 11:20:12,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 258 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-09-16 11:20:12,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5893 states. [2022-09-16 11:20:12,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5893 to 5893. [2022-09-16 11:20:12,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5893 states, 5878 states have (on average 3.1497107859816262) internal successors, (18514), 5892 states have internal predecessors, (18514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:20:12,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5893 states to 5893 states and 18514 transitions. [2022-09-16 11:20:12,680 INFO L78 Accepts]: Start accepts. Automaton has 5893 states and 18514 transitions. Word has length 42 [2022-09-16 11:20:12,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:20:12,681 INFO L495 AbstractCegarLoop]: Abstraction has 5893 states and 18514 transitions. [2022-09-16 11:20:12,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.4) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:20:12,681 INFO L276 IsEmpty]: Start isEmpty. Operand 5893 states and 18514 transitions. [2022-09-16 11:20:12,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-09-16 11:20:12,683 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:20:12,683 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] [2022-09-16 11:20:12,712 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-09-16 11:20:12,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:20:12,908 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-09-16 11:20:12,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:20:12,908 INFO L85 PathProgramCache]: Analyzing trace with hash 2040333829, now seen corresponding path program 1 times [2022-09-16 11:20:12,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:20:12,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518267655] [2022-09-16 11:20:12,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:20:12,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:20:12,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:20:12,956 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 11:20:12,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:20:12,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518267655] [2022-09-16 11:20:12,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518267655] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:20:12,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [850921560] [2022-09-16 11:20:12,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:20:12,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:20:12,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:20:12,958 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 11:20:12,960 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 11:20:13,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:20:13,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 4 conjunts are in the unsatisfiable core [2022-09-16 11:20:13,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:20:13,071 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 11:20:13,071 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:20:13,111 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 11:20:13,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [850921560] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:20:13,111 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:20:13,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-09-16 11:20:13,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733172283] [2022-09-16 11:20:13,112 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:20:13,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-16 11:20:13,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:20:13,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-16 11:20:13,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-09-16 11:20:13,113 INFO L87 Difference]: Start difference. First operand 5893 states and 18514 transitions. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:20:13,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:20:13,225 INFO L93 Difference]: Finished difference Result 5809 states and 18258 transitions. [2022-09-16 11:20:13,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-16 11:20:13,225 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 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 46 [2022-09-16 11:20:13,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:20:13,249 INFO L225 Difference]: With dead ends: 5809 [2022-09-16 11:20:13,249 INFO L226 Difference]: Without dead ends: 5809 [2022-09-16 11:20:13,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2022-09-16 11:20:13,250 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 133 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-09-16 11:20:13,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 334 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-09-16 11:20:13,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5809 states. [2022-09-16 11:20:13,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5809 to 5809. [2022-09-16 11:20:13,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5809 states, 5794 states have (on average 3.1511908871246117) internal successors, (18258), 5808 states have internal predecessors, (18258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:20:13,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5809 states to 5809 states and 18258 transitions. [2022-09-16 11:20:13,515 INFO L78 Accepts]: Start accepts. Automaton has 5809 states and 18258 transitions. Word has length 46 [2022-09-16 11:20:13,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:20:13,516 INFO L495 AbstractCegarLoop]: Abstraction has 5809 states and 18258 transitions. [2022-09-16 11:20:13,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:20:13,516 INFO L276 IsEmpty]: Start isEmpty. Operand 5809 states and 18258 transitions. [2022-09-16 11:20:13,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-09-16 11:20:13,523 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:20:13,523 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:20:13,554 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 11:20:13,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:20:13,752 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-09-16 11:20:13,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:20:13,752 INFO L85 PathProgramCache]: Analyzing trace with hash -373827647, now seen corresponding path program 1 times [2022-09-16 11:20:13,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:20:13,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859692732] [2022-09-16 11:20:13,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:20:13,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:20:13,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-16 11:20:13,771 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-09-16 11:20:13,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-16 11:20:13,799 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-09-16 11:20:13,800 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-09-16 11:20:13,800 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2022-09-16 11:20:13,800 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 5 remaining) [2022-09-16 11:20:13,800 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 5 remaining) [2022-09-16 11:20:13,800 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 5 remaining) [2022-09-16 11:20:13,801 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 5 remaining) [2022-09-16 11:20:13,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-09-16 11:20:13,801 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-09-16 11:20:13,801 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-09-16 11:20:13,801 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-09-16 11:20:13,814 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-09-16 11:20:13,816 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 89 places, 87 transitions, 218 flow [2022-09-16 11:20:15,805 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 62140 states, 62085 states have (on average 4.006925988564065) internal successors, (248770), 62139 states have internal predecessors, (248770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:20:15,806 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 11:20:15,806 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;@6d70a144, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 11:20:15,806 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-09-16 11:20:15,947 INFO L276 IsEmpty]: Start isEmpty. Operand has 62140 states, 62085 states have (on average 4.006925988564065) internal successors, (248770), 62139 states have internal predecessors, (248770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:20:15,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-09-16 11:20:15,947 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:20:15,948 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] [2022-09-16 11:20:15,948 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-09-16 11:20:15,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:20:15,949 INFO L85 PathProgramCache]: Analyzing trace with hash 194390217, now seen corresponding path program 1 times [2022-09-16 11:20:15,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:20:15,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174559792] [2022-09-16 11:20:15,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:20:15,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:20:15,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:20:15,977 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 11:20:15,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:20:15,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174559792] [2022-09-16 11:20:15,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174559792] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:20:15,978 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:20:15,978 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:20:15,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453557201] [2022-09-16 11:20:15,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:20:15,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:20:16,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:20:16,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:20:16,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:20:16,251 INFO L87 Difference]: Start difference. First operand has 62140 states, 62085 states have (on average 4.006925988564065) internal successors, (248770), 62139 states have internal predecessors, (248770), 0 states have call successors, (0), 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 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:20:17,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:20:17,218 INFO L93 Difference]: Finished difference Result 60570 states and 236754 transitions. [2022-09-16 11:20:17,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:20:17,218 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 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 29 [2022-09-16 11:20:17,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:20:17,921 INFO L225 Difference]: With dead ends: 60570 [2022-09-16 11:20:17,921 INFO L226 Difference]: Without dead ends: 42211 [2022-09-16 11:20:17,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-09-16 11:20:17,923 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 20 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-09-16 11:20:17,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 207 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-09-16 11:20:18,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42211 states. [2022-09-16 11:20:19,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42211 to 42211. [2022-09-16 11:20:19,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42211 states, 42174 states have (on average 3.923033148385261) internal successors, (165450), 42210 states have internal predecessors, (165450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:20:19,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42211 states to 42211 states and 165450 transitions. [2022-09-16 11:20:19,852 INFO L78 Accepts]: Start accepts. Automaton has 42211 states and 165450 transitions. Word has length 29 [2022-09-16 11:20:19,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:20:19,852 INFO L495 AbstractCegarLoop]: Abstraction has 42211 states and 165450 transitions. [2022-09-16 11:20:19,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:20:19,853 INFO L276 IsEmpty]: Start isEmpty. Operand 42211 states and 165450 transitions. [2022-09-16 11:20:19,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-09-16 11:20:19,853 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:20:19,853 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:20:19,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-09-16 11:20:19,854 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-09-16 11:20:19,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:20:19,854 INFO L85 PathProgramCache]: Analyzing trace with hash 630328712, now seen corresponding path program 1 times [2022-09-16 11:20:19,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:20:19,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596754473] [2022-09-16 11:20:19,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:20:19,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:20:19,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:20:19,895 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:20:19,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:20:19,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596754473] [2022-09-16 11:20:19,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596754473] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:20:19,895 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:20:19,895 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:20:19,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616181694] [2022-09-16 11:20:19,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:20:19,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:20:19,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:20:19,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:20:19,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:20:19,898 INFO L87 Difference]: Start difference. First operand 42211 states and 165450 transitions. Second operand has 4 states, 3 states have (on average 13.666666666666666) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:20:20,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:20:20,444 INFO L93 Difference]: Finished difference Result 40663 states and 158982 transitions. [2022-09-16 11:20:20,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:20:20,445 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 13.666666666666666) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2022-09-16 11:20:20,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:20:20,814 INFO L225 Difference]: With dead ends: 40663 [2022-09-16 11:20:20,814 INFO L226 Difference]: Without dead ends: 40663 [2022-09-16 11:20:20,815 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-09-16 11:20:20,815 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 71 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-09-16 11:20:20,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 187 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-09-16 11:20:20,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40663 states. [2022-09-16 11:20:22,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40663 to 40663. [2022-09-16 11:20:22,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40663 states, 40629 states have (on average 3.913017795170937) internal successors, (158982), 40662 states have internal predecessors, (158982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:20:22,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40663 states to 40663 states and 158982 transitions. [2022-09-16 11:20:22,672 INFO L78 Accepts]: Start accepts. Automaton has 40663 states and 158982 transitions. Word has length 41 [2022-09-16 11:20:22,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:20:22,672 INFO L495 AbstractCegarLoop]: Abstraction has 40663 states and 158982 transitions. [2022-09-16 11:20:22,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 13.666666666666666) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:20:22,673 INFO L276 IsEmpty]: Start isEmpty. Operand 40663 states and 158982 transitions. [2022-09-16 11:20:22,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-09-16 11:20:22,673 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:20:22,674 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] [2022-09-16 11:20:22,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-09-16 11:20:22,674 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-09-16 11:20:22,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:20:22,687 INFO L85 PathProgramCache]: Analyzing trace with hash -1934646015, now seen corresponding path program 1 times [2022-09-16 11:20:22,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:20:22,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862184737] [2022-09-16 11:20:22,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:20:22,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:20:22,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:20:22,750 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:20:22,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:20:22,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862184737] [2022-09-16 11:20:22,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862184737] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:20:22,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1604363396] [2022-09-16 11:20:22,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:20:22,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:20:22,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:20:22,753 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 11:20:22,754 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 11:20:22,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:20:22,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:20:22,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:20:22,871 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:20:22,871 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:20:22,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1604363396] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:20:22,871 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:20:22,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 11:20:22,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334212146] [2022-09-16 11:20:22,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:20:22,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:20:22,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:20:22,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:20:22,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:20:22,873 INFO L87 Difference]: Start difference. First operand 40663 states and 158982 transitions. Second operand has 6 states, 5 states have (on average 8.4) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:20:23,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:20:23,186 INFO L93 Difference]: Finished difference Result 39115 states and 152514 transitions. [2022-09-16 11:20:23,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:20:23,187 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.4) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2022-09-16 11:20:23,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:20:23,621 INFO L225 Difference]: With dead ends: 39115 [2022-09-16 11:20:23,622 INFO L226 Difference]: Without dead ends: 39115 [2022-09-16 11:20:23,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 40 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 11:20:23,622 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 99 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-09-16 11:20:23,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 218 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-09-16 11:20:23,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39115 states. [2022-09-16 11:20:24,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39115 to 39115. [2022-09-16 11:20:24,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39115 states, 39084 states have (on average 3.9022106232729508) internal successors, (152514), 39114 states have internal predecessors, (152514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:20:25,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39115 states to 39115 states and 152514 transitions. [2022-09-16 11:20:25,281 INFO L78 Accepts]: Start accepts. Automaton has 39115 states and 152514 transitions. Word has length 42 [2022-09-16 11:20:25,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:20:25,281 INFO L495 AbstractCegarLoop]: Abstraction has 39115 states and 152514 transitions. [2022-09-16 11:20:25,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.4) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:20:25,282 INFO L276 IsEmpty]: Start isEmpty. Operand 39115 states and 152514 transitions. [2022-09-16 11:20:25,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-09-16 11:20:25,282 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:20:25,282 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] [2022-09-16 11:20:25,299 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 11:20:25,483 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,SelfDestructingSolverStorable14 [2022-09-16 11:20:25,483 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-09-16 11:20:25,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:20:25,484 INFO L85 PathProgramCache]: Analyzing trace with hash 344802627, now seen corresponding path program 1 times [2022-09-16 11:20:25,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:20:25,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287555842] [2022-09-16 11:20:25,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:20:25,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:20:25,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:20:25,522 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 11:20:25,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:20:25,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287555842] [2022-09-16 11:20:25,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287555842] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:20:25,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [812961206] [2022-09-16 11:20:25,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:20:25,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:20:25,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:20:25,524 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 11:20:25,525 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 11:20:25,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:20:25,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 4 conjunts are in the unsatisfiable core [2022-09-16 11:20:25,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:20:25,640 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 11:20:25,640 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:20:25,677 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 11:20:25,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [812961206] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:20:25,677 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:20:25,677 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-09-16 11:20:25,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618638950] [2022-09-16 11:20:25,678 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:20:25,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-16 11:20:25,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:20:25,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-16 11:20:25,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-09-16 11:20:25,679 INFO L87 Difference]: Start difference. First operand 39115 states and 152514 transitions. Second operand has 10 states, 10 states have (on average 8.2) internal successors, (82), 10 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:20:26,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:20:26,002 INFO L93 Difference]: Finished difference Result 39031 states and 152258 transitions. [2022-09-16 11:20:26,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-16 11:20:26,003 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.2) internal successors, (82), 10 states have internal predecessors, (82), 0 states have call successors, (0), 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 46 [2022-09-16 11:20:26,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:20:26,512 INFO L225 Difference]: With dead ends: 39031 [2022-09-16 11:20:26,512 INFO L226 Difference]: Without dead ends: 39031 [2022-09-16 11:20:26,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2022-09-16 11:20:26,513 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 116 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-09-16 11:20:26,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 380 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-09-16 11:20:26,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39031 states. [2022-09-16 11:20:27,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39031 to 39031. [2022-09-16 11:20:27,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39031 states, 39000 states have (on average 3.9040512820512823) internal successors, (152258), 39030 states have internal predecessors, (152258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:20:27,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39031 states to 39031 states and 152258 transitions. [2022-09-16 11:20:27,995 INFO L78 Accepts]: Start accepts. Automaton has 39031 states and 152258 transitions. Word has length 46 [2022-09-16 11:20:27,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:20:27,996 INFO L495 AbstractCegarLoop]: Abstraction has 39031 states and 152258 transitions. [2022-09-16 11:20:27,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.2) internal successors, (82), 10 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:20:27,996 INFO L276 IsEmpty]: Start isEmpty. Operand 39031 states and 152258 transitions. [2022-09-16 11:20:28,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-09-16 11:20:28,034 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:20:28,034 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:20:28,062 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 11:20:28,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-09-16 11:20:28,235 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-09-16 11:20:28,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:20:28,236 INFO L85 PathProgramCache]: Analyzing trace with hash -515931326, now seen corresponding path program 1 times [2022-09-16 11:20:28,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:20:28,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945183150] [2022-09-16 11:20:28,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:20:28,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:20:28,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:20:28,296 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-09-16 11:20:28,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:20:28,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945183150] [2022-09-16 11:20:28,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945183150] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:20:28,298 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:20:28,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:20:28,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035437809] [2022-09-16 11:20:28,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:20:28,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:20:28,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:20:28,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:20:28,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:20:28,299 INFO L87 Difference]: Start difference. First operand 39031 states and 152258 transitions. Second operand has 4 states, 3 states have (on average 16.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:20:28,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:20:28,648 INFO L93 Difference]: Finished difference Result 38599 states and 150098 transitions. [2022-09-16 11:20:28,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:20:28,648 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 16.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 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 70 [2022-09-16 11:20:28,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:20:28,808 INFO L225 Difference]: With dead ends: 38599 [2022-09-16 11:20:28,808 INFO L226 Difference]: Without dead ends: 38599 [2022-09-16 11:20:28,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-09-16 11:20:28,809 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 68 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-09-16 11:20:28,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 253 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-09-16 11:20:28,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38599 states. [2022-09-16 11:20:30,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38599 to 38383. [2022-09-16 11:20:30,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38383 states, 38360 states have (on average 3.8978623566214807) internal successors, (149522), 38382 states have internal predecessors, (149522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:20:30,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38383 states to 38383 states and 149522 transitions. [2022-09-16 11:20:30,565 INFO L78 Accepts]: Start accepts. Automaton has 38383 states and 149522 transitions. Word has length 70 [2022-09-16 11:20:30,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:20:30,566 INFO L495 AbstractCegarLoop]: Abstraction has 38383 states and 149522 transitions. [2022-09-16 11:20:30,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 16.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:20:30,566 INFO L276 IsEmpty]: Start isEmpty. Operand 38383 states and 149522 transitions. [2022-09-16 11:20:30,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-09-16 11:20:30,597 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:20:30,597 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:20:30,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-09-16 11:20:30,598 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-09-16 11:20:30,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:20:30,598 INFO L85 PathProgramCache]: Analyzing trace with hash 98746669, now seen corresponding path program 1 times [2022-09-16 11:20:30,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:20:30,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794173969] [2022-09-16 11:20:30,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:20:30,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:20:30,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-16 11:20:30,620 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-09-16 11:20:30,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-16 11:20:30,641 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-09-16 11:20:30,641 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-09-16 11:20:30,641 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2022-09-16 11:20:30,641 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 5 remaining) [2022-09-16 11:20:30,642 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 5 remaining) [2022-09-16 11:20:30,642 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 5 remaining) [2022-09-16 11:20:30,642 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 5 remaining) [2022-09-16 11:20:30,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-09-16 11:20:30,642 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-09-16 11:20:30,643 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2022-09-16 11:20:30,643 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2022-09-16 11:20:30,666 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2022-09-16 11:20:30,671 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 97 places, 94 transitions, 248 flow [2022-09-16 11:20:43,514 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 416056 states, 415951 states have (on average 4.745215181595909) internal successors, (1973777), 416055 states have internal predecessors, (1973777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:20:43,543 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 11:20:43,544 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;@6d70a144, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 11:20:43,544 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-09-16 11:20:44,336 INFO L276 IsEmpty]: Start isEmpty. Operand has 416056 states, 415951 states have (on average 4.745215181595909) internal successors, (1973777), 416055 states have internal predecessors, (1973777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:20:44,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-09-16 11:20:44,336 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:20:44,336 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] [2022-09-16 11:20:44,337 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-09-16 11:20:44,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:20:44,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1093458476, now seen corresponding path program 1 times [2022-09-16 11:20:44,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:20:44,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001201134] [2022-09-16 11:20:44,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:20:44,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:20:44,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:20:44,359 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 11:20:44,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:20:44,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001201134] [2022-09-16 11:20:44,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001201134] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:20:44,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:20:44,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:20:44,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410847072] [2022-09-16 11:20:44,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:20:44,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:20:44,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:20:44,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:20:44,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:20:45,276 INFO L87 Difference]: Start difference. First operand has 416056 states, 415951 states have (on average 4.745215181595909) internal successors, (1973777), 416055 states have internal predecessors, (1973777), 0 states have call successors, (0), 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 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:20:55,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:20:55,040 INFO L93 Difference]: Finished difference Result 406710 states and 1891627 transitions. [2022-09-16 11:20:55,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:20:55,046 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 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 29 [2022-09-16 11:20:55,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:21:01,293 INFO L225 Difference]: With dead ends: 406710 [2022-09-16 11:21:01,297 INFO L226 Difference]: Without dead ends: 279733 [2022-09-16 11:21:01,321 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 11:21:01,322 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 20 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-09-16 11:21:01,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 222 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-09-16 11:21:03,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279733 states. [2022-09-16 11:21:18,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279733 to 279733. [2022-09-16 11:21:19,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279733 states, 279662 states have (on average 4.674035085210003) internal successors, (1307150), 279732 states have internal predecessors, (1307150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:21:22,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279733 states to 279733 states and 1307150 transitions. [2022-09-16 11:21:22,938 INFO L78 Accepts]: Start accepts. Automaton has 279733 states and 1307150 transitions. Word has length 29 [2022-09-16 11:21:22,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:21:22,939 INFO L495 AbstractCegarLoop]: Abstraction has 279733 states and 1307150 transitions. [2022-09-16 11:21:22,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:21:22,939 INFO L276 IsEmpty]: Start isEmpty. Operand 279733 states and 1307150 transitions. [2022-09-16 11:21:22,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-09-16 11:21:22,940 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:21:22,940 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:21:22,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-09-16 11:21:22,940 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2022-09-16 11:21:22,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:21:22,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1490972272, now seen corresponding path program 1 times [2022-09-16 11:21:22,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:21:22,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357129551] [2022-09-16 11:21:22,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:21:22,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:21:22,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:21:22,986 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:21:22,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:21:22,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357129551] [2022-09-16 11:21:22,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357129551] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:21:22,987 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:21:22,987 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:21:22,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286074002] [2022-09-16 11:21:22,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:21:22,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:21:22,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:21:22,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:21:22,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:21:22,988 INFO L87 Difference]: Start difference. First operand 279733 states and 1307150 transitions. Second operand has 4 states, 3 states have (on average 13.666666666666666) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:21:29,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:21:29,920 INFO L93 Difference]: Finished difference Result 270409 states and 1260506 transitions. [2022-09-16 11:21:29,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:21:29,921 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 13.666666666666666) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2022-09-16 11:21:29,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:21:36,071 INFO L225 Difference]: With dead ends: 270409 [2022-09-16 11:21:36,072 INFO L226 Difference]: Without dead ends: 270409 [2022-09-16 11:21:36,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-09-16 11:21:36,074 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 87 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-09-16 11:21:36,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 207 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-09-16 11:21:37,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270409 states.