/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Overflow-32bit-Automizer_Default.epf -i ../sv-benchmarks/c/list-ext2-properties/simple_search_value-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-16 14:14:23,938 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-16 14:14:23,943 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-16 14:14:24,004 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-16 14:14:24,005 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-16 14:14:24,006 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-16 14:14:24,008 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-16 14:14:24,010 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-16 14:14:24,013 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-16 14:14:24,014 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-16 14:14:24,015 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-16 14:14:24,017 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-16 14:14:24,017 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-16 14:14:24,019 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-16 14:14:24,020 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-16 14:14:24,021 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-16 14:14:24,023 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-16 14:14:24,024 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-16 14:14:24,026 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-16 14:14:24,028 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-16 14:14:24,030 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-16 14:14:24,032 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-16 14:14:24,033 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-16 14:14:24,034 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-16 14:14:24,039 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-16 14:14:24,039 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-16 14:14:24,040 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-16 14:14:24,041 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-16 14:14:24,041 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-16 14:14:24,043 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-16 14:14:24,043 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-16 14:14:24,044 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-16 14:14:24,045 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-16 14:14:24,046 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-16 14:14:24,047 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-16 14:14:24,047 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-16 14:14:24,048 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-16 14:14:24,049 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-16 14:14:24,049 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-16 14:14:24,050 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-16 14:14:24,051 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-16 14:14:24,053 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Overflow-32bit-Automizer_Default.epf [2022-10-16 14:14:24,082 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-16 14:14:24,083 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-16 14:14:24,083 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-16 14:14:24,083 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-16 14:14:24,084 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-16 14:14:24,085 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-16 14:14:24,086 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-16 14:14:24,086 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-16 14:14:24,086 INFO L138 SettingsManager]: * Use SBE=true [2022-10-16 14:14:24,087 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-16 14:14:24,087 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-16 14:14:24,087 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-16 14:14:24,087 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-16 14:14:24,087 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-16 14:14:24,088 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-16 14:14:24,088 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-16 14:14:24,088 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-16 14:14:24,088 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-16 14:14:24,088 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-10-16 14:14:24,089 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-16 14:14:24,089 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-16 14:14:24,089 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-16 14:14:24,089 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-16 14:14:24,090 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-16 14:14:24,090 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-16 14:14:24,090 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-16 14:14:24,090 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 14:14:24,091 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-16 14:14:24,091 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-16 14:14:24,091 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-16 14:14:24,091 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-16 14:14:24,091 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-16 14:14:24,092 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-16 14:14:24,092 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-16 14:14:24,464 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-16 14:14:24,497 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-16 14:14:24,506 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-16 14:14:24,507 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-16 14:14:24,508 INFO L275 PluginConnector]: CDTParser initialized [2022-10-16 14:14:24,510 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-ext2-properties/simple_search_value-2.i [2022-10-16 14:14:24,609 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5024d8101/81f08a91b10542f396e483cfd2c97aec/FLAGf05e37335 [2022-10-16 14:14:25,304 INFO L306 CDTParser]: Found 1 translation units. [2022-10-16 14:14:25,305 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-ext2-properties/simple_search_value-2.i [2022-10-16 14:14:25,325 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5024d8101/81f08a91b10542f396e483cfd2c97aec/FLAGf05e37335 [2022-10-16 14:14:25,604 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5024d8101/81f08a91b10542f396e483cfd2c97aec [2022-10-16 14:14:25,607 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-16 14:14:25,617 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-16 14:14:25,621 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-16 14:14:25,621 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-16 14:14:25,625 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-16 14:14:25,627 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:14:25" (1/1) ... [2022-10-16 14:14:25,629 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c2e8b4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:14:25, skipping insertion in model container [2022-10-16 14:14:25,629 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:14:25" (1/1) ... [2022-10-16 14:14:25,639 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-16 14:14:25,705 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-16 14:14:26,091 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-ext2-properties/simple_search_value-2.i[23220,23233] [2022-10-16 14:14:26,092 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 14:14:26,105 INFO L203 MainTranslator]: Completed pre-run [2022-10-16 14:14:26,153 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-ext2-properties/simple_search_value-2.i[23220,23233] [2022-10-16 14:14:26,154 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 14:14:26,190 INFO L208 MainTranslator]: Completed translation [2022-10-16 14:14:26,191 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:14:26 WrapperNode [2022-10-16 14:14:26,191 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-16 14:14:26,192 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-16 14:14:26,193 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-16 14:14:26,193 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-16 14:14:26,202 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:14:26" (1/1) ... [2022-10-16 14:14:26,218 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:14:26" (1/1) ... [2022-10-16 14:14:26,246 INFO L138 Inliner]: procedures = 122, calls = 18, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 72 [2022-10-16 14:14:26,246 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-16 14:14:26,247 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-16 14:14:26,247 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-16 14:14:26,248 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-16 14:14:26,259 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:14:26" (1/1) ... [2022-10-16 14:14:26,259 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:14:26" (1/1) ... [2022-10-16 14:14:26,263 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:14:26" (1/1) ... [2022-10-16 14:14:26,263 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:14:26" (1/1) ... [2022-10-16 14:14:26,270 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:14:26" (1/1) ... [2022-10-16 14:14:26,276 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:14:26" (1/1) ... [2022-10-16 14:14:26,278 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:14:26" (1/1) ... [2022-10-16 14:14:26,280 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:14:26" (1/1) ... [2022-10-16 14:14:26,282 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-16 14:14:26,284 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-16 14:14:26,284 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-16 14:14:26,284 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-16 14:14:26,285 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:14:26" (1/1) ... [2022-10-16 14:14:26,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 14:14:26,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:14:26,326 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) [2022-10-16 14:14:26,344 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 [2022-10-16 14:14:26,420 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2022-10-16 14:14:26,420 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2022-10-16 14:14:26,421 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-16 14:14:26,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-16 14:14:26,422 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-16 14:14:26,422 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-16 14:14:26,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-16 14:14:26,425 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-16 14:14:26,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-16 14:14:26,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-16 14:14:26,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-16 14:14:26,529 INFO L235 CfgBuilder]: Building ICFG [2022-10-16 14:14:26,532 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-16 14:14:26,608 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2022-10-16 14:14:26,867 INFO L276 CfgBuilder]: Performing block encoding [2022-10-16 14:14:26,888 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-16 14:14:26,888 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-10-16 14:14:26,896 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:14:26 BoogieIcfgContainer [2022-10-16 14:14:26,902 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-16 14:14:26,906 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-16 14:14:26,907 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-16 14:14:26,916 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-16 14:14:26,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:14:25" (1/3) ... [2022-10-16 14:14:26,921 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e33e020 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:14:26, skipping insertion in model container [2022-10-16 14:14:26,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:14:26" (2/3) ... [2022-10-16 14:14:26,923 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e33e020 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:14:26, skipping insertion in model container [2022-10-16 14:14:26,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:14:26" (3/3) ... [2022-10-16 14:14:26,925 INFO L112 eAbstractionObserver]: Analyzing ICFG simple_search_value-2.i [2022-10-16 14:14:26,963 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-16 14:14:26,963 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-10-16 14:14:27,078 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-16 14:14:27,097 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;@4dfbf11f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-16 14:14:27,097 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-10-16 14:14:27,115 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 24 states have (on average 1.5) internal successors, (36), 27 states have internal predecessors, (36), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 14:14:27,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-10-16 14:14:27,143 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:14:27,144 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 14:14:27,145 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-10-16 14:14:27,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:14:27,156 INFO L85 PathProgramCache]: Analyzing trace with hash -342662705, now seen corresponding path program 1 times [2022-10-16 14:14:27,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:14:27,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437058615] [2022-10-16 14:14:27,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:14:27,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:14:27,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:14:27,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 14:14:27,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:14:27,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437058615] [2022-10-16 14:14:27,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437058615] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 14:14:27,674 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 14:14:27,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 14:14:27,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142023611] [2022-10-16 14:14:27,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 14:14:27,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 14:14:27,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:14:27,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 14:14:27,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 14:14:27,731 INFO L87 Difference]: Start difference. First operand has 29 states, 24 states have (on average 1.5) internal successors, (36), 27 states have internal predecessors, (36), 2 states have call successors, (2), 1 states have call predecessors, (2), 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 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 14:14:27,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:14:27,813 INFO L93 Difference]: Finished difference Result 63 states and 84 transitions. [2022-10-16 14:14:27,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 14:14:27,816 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2022-10-16 14:14:27,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:14:27,824 INFO L225 Difference]: With dead ends: 63 [2022-10-16 14:14:27,824 INFO L226 Difference]: Without dead ends: 20 [2022-10-16 14:14:27,828 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 [2022-10-16 14:14:27,832 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 20 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 14:14:27,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 83 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 14:14:27,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-10-16 14:14:27,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-10-16 14:14:27,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 14:14:27,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2022-10-16 14:14:27,881 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 10 [2022-10-16 14:14:27,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:14:27,882 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2022-10-16 14:14:27,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 14:14:27,883 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2022-10-16 14:14:27,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-10-16 14:14:27,884 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:14:27,884 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 14:14:27,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-16 14:14:27,885 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-10-16 14:14:27,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:14:27,886 INFO L85 PathProgramCache]: Analyzing trace with hash 941725797, now seen corresponding path program 1 times [2022-10-16 14:14:27,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:14:27,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547285842] [2022-10-16 14:14:27,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:14:27,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:14:27,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:14:28,099 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-16 14:14:28,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:14:28,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547285842] [2022-10-16 14:14:28,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547285842] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 14:14:28,104 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 14:14:28,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 14:14:28,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485206867] [2022-10-16 14:14:28,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 14:14:28,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 14:14:28,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:14:28,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 14:14:28,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-16 14:14:28,110 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 14:14:28,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:14:28,190 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2022-10-16 14:14:28,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-16 14:14:28,191 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2022-10-16 14:14:28,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:14:28,192 INFO L225 Difference]: With dead ends: 27 [2022-10-16 14:14:28,192 INFO L226 Difference]: Without dead ends: 26 [2022-10-16 14:14:28,193 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-10-16 14:14:28,195 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 11 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 14:14:28,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 26 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 14:14:28,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-10-16 14:14:28,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2022-10-16 14:14:28,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 23 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 14:14:28,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2022-10-16 14:14:28,203 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 17 [2022-10-16 14:14:28,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:14:28,204 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2022-10-16 14:14:28,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 14:14:28,205 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2022-10-16 14:14:28,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-10-16 14:14:28,205 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:14:28,206 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 14:14:28,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-16 14:14:28,206 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-10-16 14:14:28,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:14:28,207 INFO L85 PathProgramCache]: Analyzing trace with hash 943572839, now seen corresponding path program 1 times [2022-10-16 14:14:28,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:14:28,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754797575] [2022-10-16 14:14:28,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:14:28,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:14:28,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:14:28,486 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 14:14:28,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:14:28,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754797575] [2022-10-16 14:14:28,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754797575] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:14:28,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1395096810] [2022-10-16 14:14:28,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:14:28,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:14:28,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:14:28,499 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) [2022-10-16 14:14:28,507 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-16 14:14:28,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:14:28,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-16 14:14:28,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 14:14:28,699 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 14:14:28,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 14:14:28,758 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 14:14:28,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1395096810] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 14:14:28,758 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 14:14:28,759 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2022-10-16 14:14:28,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66987341] [2022-10-16 14:14:28,759 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 14:14:28,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-10-16 14:14:28,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:14:28,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-10-16 14:14:28,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-10-16 14:14:28,767 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 14:14:28,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:14:28,951 INFO L93 Difference]: Finished difference Result 58 states and 63 transitions. [2022-10-16 14:14:28,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-10-16 14:14:28,952 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 states have internal predecessors, (34), 0 states have call successors, (0), 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 17 [2022-10-16 14:14:28,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:14:28,954 INFO L225 Difference]: With dead ends: 58 [2022-10-16 14:14:28,954 INFO L226 Difference]: Without dead ends: 40 [2022-10-16 14:14:28,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2022-10-16 14:14:28,957 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 30 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 14:14:28,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 38 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 14:14:28,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-10-16 14:14:28,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 33. [2022-10-16 14:14:28,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 31 states have (on average 1.1290322580645162) internal successors, (35), 32 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 14:14:28,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2022-10-16 14:14:28,966 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 17 [2022-10-16 14:14:28,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:14:28,967 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2022-10-16 14:14:28,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 14:14:28,967 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2022-10-16 14:14:28,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-10-16 14:14:28,968 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:14:28,968 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-10-16 14:14:28,999 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-16 14:14:29,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:14:29,185 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-10-16 14:14:29,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:14:29,187 INFO L85 PathProgramCache]: Analyzing trace with hash -871271292, now seen corresponding path program 1 times [2022-10-16 14:14:29,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:14:29,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085865856] [2022-10-16 14:14:29,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:14:29,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:14:29,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:14:29,349 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 14:14:29,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:14:29,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085865856] [2022-10-16 14:14:29,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085865856] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:14:29,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1802260531] [2022-10-16 14:14:29,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:14:29,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:14:29,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:14:29,360 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) [2022-10-16 14:14:29,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-16 14:14:29,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:14:29,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-16 14:14:29,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 14:14:29,548 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 14:14:29,548 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 14:14:29,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1802260531] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 14:14:29,549 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 14:14:29,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-10-16 14:14:29,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008092341] [2022-10-16 14:14:29,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 14:14:29,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-16 14:14:29,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:14:29,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-16 14:14:29,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-10-16 14:14:29,551 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 14:14:29,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:14:29,604 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2022-10-16 14:14:29,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-16 14:14:29,605 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 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 18 [2022-10-16 14:14:29,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:14:29,606 INFO L225 Difference]: With dead ends: 33 [2022-10-16 14:14:29,606 INFO L226 Difference]: Without dead ends: 32 [2022-10-16 14:14:29,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-10-16 14:14:29,608 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 7 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 14:14:29,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 31 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 14:14:29,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-10-16 14:14:29,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-10-16 14:14:29,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.064516129032258) internal successors, (33), 31 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 14:14:29,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2022-10-16 14:14:29,615 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 18 [2022-10-16 14:14:29,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:14:29,616 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2022-10-16 14:14:29,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 14:14:29,616 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2022-10-16 14:14:29,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-10-16 14:14:29,617 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:14:29,617 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2022-10-16 14:14:29,662 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-16 14:14:29,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-10-16 14:14:29,832 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-10-16 14:14:29,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:14:29,833 INFO L85 PathProgramCache]: Analyzing trace with hash -664857561, now seen corresponding path program 2 times [2022-10-16 14:14:29,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:14:29,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990576700] [2022-10-16 14:14:29,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:14:29,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:14:29,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:14:30,149 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 12 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 14:14:30,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:14:30,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990576700] [2022-10-16 14:14:30,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990576700] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:14:30,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1370857585] [2022-10-16 14:14:30,150 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 14:14:30,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:14:30,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:14:30,152 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) [2022-10-16 14:14:30,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-16 14:14:30,267 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 14:14:30,267 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 14:14:30,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 9 conjunts are in the unsatisfiable core [2022-10-16 14:14:30,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 14:14:30,364 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 14:14:30,364 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 14:14:30,499 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 14:14:30,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1370857585] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 14:14:30,499 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 14:14:30,499 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 21 [2022-10-16 14:14:30,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020773397] [2022-10-16 14:14:30,500 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 14:14:30,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-10-16 14:14:30,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:14:30,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-10-16 14:14:30,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2022-10-16 14:14:30,502 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand has 21 states, 21 states have (on average 3.4761904761904763) internal successors, (73), 21 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) [2022-10-16 14:14:30,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:14:30,804 INFO L93 Difference]: Finished difference Result 100 states and 111 transitions. [2022-10-16 14:14:30,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-10-16 14:14:30,805 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.4761904761904763) internal successors, (73), 21 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 31 [2022-10-16 14:14:30,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:14:30,806 INFO L225 Difference]: With dead ends: 100 [2022-10-16 14:14:30,806 INFO L226 Difference]: Without dead ends: 88 [2022-10-16 14:14:30,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=318, Invalid=1014, Unknown=0, NotChecked=0, Total=1332 [2022-10-16 14:14:30,809 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 56 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 14:14:30,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 47 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 14:14:30,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2022-10-16 14:14:30,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 67. [2022-10-16 14:14:30,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.0909090909090908) internal successors, (72), 66 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 14:14:30,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 72 transitions. [2022-10-16 14:14:30,821 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 72 transitions. Word has length 31 [2022-10-16 14:14:30,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:14:30,821 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 72 transitions. [2022-10-16 14:14:30,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.4761904761904763) internal successors, (73), 21 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) [2022-10-16 14:14:30,822 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 72 transitions. [2022-10-16 14:14:30,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-10-16 14:14:30,824 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:14:30,824 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1] [2022-10-16 14:14:30,892 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-16 14:14:31,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:14:31,039 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-10-16 14:14:31,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:14:31,040 INFO L85 PathProgramCache]: Analyzing trace with hash 920755665, now seen corresponding path program 3 times [2022-10-16 14:14:31,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:14:31,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386086160] [2022-10-16 14:14:31,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:14:31,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:14:31,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:14:31,942 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 32 proven. 212 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 14:14:31,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:14:31,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386086160] [2022-10-16 14:14:31,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386086160] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:14:31,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [739011196] [2022-10-16 14:14:31,943 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-16 14:14:31,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:14:31,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:14:31,945 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) [2022-10-16 14:14:31,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-16 14:14:32,089 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-10-16 14:14:32,089 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 14:14:32,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-16 14:14:32,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 14:14:32,216 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 85 proven. 5 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2022-10-16 14:14:32,216 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 14:14:32,348 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 85 proven. 5 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2022-10-16 14:14:32,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [739011196] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 14:14:32,349 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 14:14:32,349 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 6, 6] total 30 [2022-10-16 14:14:32,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422629290] [2022-10-16 14:14:32,350 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 14:14:32,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-10-16 14:14:32,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:14:32,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-10-16 14:14:32,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=656, Unknown=0, NotChecked=0, Total=870 [2022-10-16 14:14:32,352 INFO L87 Difference]: Start difference. First operand 67 states and 72 transitions. Second operand has 30 states, 30 states have (on average 3.3333333333333335) internal successors, (100), 30 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 14:14:33,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:14:33,140 INFO L93 Difference]: Finished difference Result 134 states and 150 transitions. [2022-10-16 14:14:33,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-10-16 14:14:33,143 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 3.3333333333333335) internal successors, (100), 30 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-10-16 14:14:33,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:14:33,149 INFO L225 Difference]: With dead ends: 134 [2022-10-16 14:14:33,149 INFO L226 Difference]: Without dead ends: 101 [2022-10-16 14:14:33,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 515 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=734, Invalid=2346, Unknown=0, NotChecked=0, Total=3080 [2022-10-16 14:14:33,157 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 156 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-16 14:14:33,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 61 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-16 14:14:33,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2022-10-16 14:14:33,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 95. [2022-10-16 14:14:33,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 1.053191489361702) internal successors, (99), 94 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 14:14:33,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 99 transitions. [2022-10-16 14:14:33,175 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 99 transitions. Word has length 66 [2022-10-16 14:14:33,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:14:33,175 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 99 transitions. [2022-10-16 14:14:33,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 3.3333333333333335) internal successors, (100), 30 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 14:14:33,176 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 99 transitions. [2022-10-16 14:14:33,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-10-16 14:14:33,179 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:14:33,179 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 9, 4, 1, 1, 1, 1, 1] [2022-10-16 14:14:33,217 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-10-16 14:14:33,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:14:33,395 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-10-16 14:14:33,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:14:33,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1048495921, now seen corresponding path program 4 times [2022-10-16 14:14:33,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:14:33,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632206922] [2022-10-16 14:14:33,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:14:33,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:14:33,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:14:34,465 INFO L134 CoverageAnalysis]: Checked inductivity of 534 backedges. 231 proven. 270 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-10-16 14:14:34,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:14:34,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632206922] [2022-10-16 14:14:34,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632206922] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:14:34,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328250209] [2022-10-16 14:14:34,466 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-10-16 14:14:34,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:14:34,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:14:34,467 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) [2022-10-16 14:14:34,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-16 14:14:39,731 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-10-16 14:14:39,732 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 14:14:39,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 699 conjuncts, 12 conjunts are in the unsatisfiable core [2022-10-16 14:14:39,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 14:14:40,059 INFO L134 CoverageAnalysis]: Checked inductivity of 534 backedges. 268 proven. 62 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2022-10-16 14:14:40,060 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 14:14:40,454 INFO L134 CoverageAnalysis]: Checked inductivity of 534 backedges. 268 proven. 62 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2022-10-16 14:14:40,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [328250209] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 14:14:40,455 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 14:14:40,455 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 12, 12] total 43 [2022-10-16 14:14:40,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010434262] [2022-10-16 14:14:40,456 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 14:14:40,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-10-16 14:14:40,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:14:40,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-10-16 14:14:40,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=441, Invalid=1365, Unknown=0, NotChecked=0, Total=1806 [2022-10-16 14:14:40,459 INFO L87 Difference]: Start difference. First operand 95 states and 99 transitions. Second operand has 43 states, 43 states have (on average 3.558139534883721) internal successors, (153), 43 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 14:14:41,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:14:41,655 INFO L93 Difference]: Finished difference Result 178 states and 199 transitions. [2022-10-16 14:14:41,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-10-16 14:14:41,656 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 3.558139534883721) internal successors, (153), 43 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2022-10-16 14:14:41,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:14:41,658 INFO L225 Difference]: With dead ends: 178 [2022-10-16 14:14:41,658 INFO L226 Difference]: Without dead ends: 145 [2022-10-16 14:14:41,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 166 SyntacticMatches, 1 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1205 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1492, Invalid=4988, Unknown=0, NotChecked=0, Total=6480 [2022-10-16 14:14:41,663 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 221 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-16 14:14:41,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 59 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-16 14:14:41,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2022-10-16 14:14:41,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 144. [2022-10-16 14:14:41,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 143 states have (on average 1.0769230769230769) internal successors, (154), 143 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 14:14:41,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 154 transitions. [2022-10-16 14:14:41,677 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 154 transitions. Word has length 94 [2022-10-16 14:14:41,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:14:41,678 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 154 transitions. [2022-10-16 14:14:41,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 3.558139534883721) internal successors, (153), 43 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 14:14:41,679 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 154 transitions. [2022-10-16 14:14:41,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-10-16 14:14:41,681 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:14:41,681 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 19, 19, 10, 10, 1, 1, 1, 1, 1] [2022-10-16 14:14:41,734 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-10-16 14:14:41,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:14:41,883 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-10-16 14:14:41,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:14:41,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1734527973, now seen corresponding path program 5 times [2022-10-16 14:14:41,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:14:41,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070098601] [2022-10-16 14:14:41,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:14:41,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:14:42,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:14:44,784 INFO L134 CoverageAnalysis]: Checked inductivity of 1311 backedges. 0 proven. 1311 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 14:14:44,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:14:44,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070098601] [2022-10-16 14:14:44,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070098601] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:14:44,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086236102] [2022-10-16 14:14:44,785 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-10-16 14:14:44,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:14:44,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:14:44,786 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) [2022-10-16 14:14:44,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-10-16 14:16:39,499 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 20 check-sat command(s) [2022-10-16 14:16:39,500 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 14:16:39,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 1067 conjuncts, 38 conjunts are in the unsatisfiable core [2022-10-16 14:16:39,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 14:16:40,327 INFO L134 CoverageAnalysis]: Checked inductivity of 1311 backedges. 265 proven. 1037 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-10-16 14:16:40,327 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 14:16:42,249 INFO L134 CoverageAnalysis]: Checked inductivity of 1311 backedges. 265 proven. 1037 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-10-16 14:16:42,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2086236102] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 14:16:42,250 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 14:16:42,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 38, 38] total 93 [2022-10-16 14:16:42,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936236072] [2022-10-16 14:16:42,250 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 14:16:42,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2022-10-16 14:16:42,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:16:42,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2022-10-16 14:16:42,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2194, Invalid=6548, Unknown=0, NotChecked=0, Total=8742 [2022-10-16 14:16:42,259 INFO L87 Difference]: Start difference. First operand 144 states and 154 transitions. Second operand has 94 states, 93 states have (on average 3.6129032258064515) internal successors, (336), 94 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 14:16:46,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:16:46,728 INFO L93 Difference]: Finished difference Result 328 states and 389 transitions. [2022-10-16 14:16:46,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2022-10-16 14:16:46,729 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 93 states have (on average 3.6129032258064515) internal successors, (336), 94 states have internal predecessors, (336), 0 states have call successors, (0), 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 143 [2022-10-16 14:16:46,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:16:46,733 INFO L225 Difference]: With dead ends: 328 [2022-10-16 14:16:46,733 INFO L226 Difference]: Without dead ends: 327 [2022-10-16 14:16:46,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 415 GetRequests, 232 SyntacticMatches, 1 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7548 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=7577, Invalid=26095, Unknown=0, NotChecked=0, Total=33672 [2022-10-16 14:16:46,751 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 571 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 320 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 571 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 320 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-16 14:16:46,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [571 Valid, 82 Invalid, 731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [320 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-10-16 14:16:46,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2022-10-16 14:16:46,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 326. [2022-10-16 14:16:46,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 325 states have (on average 1.113846153846154) internal successors, (362), 325 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 14:16:46,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 362 transitions. [2022-10-16 14:16:46,775 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 362 transitions. Word has length 143 [2022-10-16 14:16:46,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:16:46,776 INFO L495 AbstractCegarLoop]: Abstraction has 326 states and 362 transitions. [2022-10-16 14:16:46,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 93 states have (on average 3.6129032258064515) internal successors, (336), 94 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 14:16:46,777 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 362 transitions. [2022-10-16 14:16:46,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2022-10-16 14:16:46,782 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:16:46,782 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 45, 45, 36, 10, 1, 1, 1, 1, 1] [2022-10-16 14:16:46,841 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-10-16 14:16:46,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:16:46,996 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-10-16 14:16:46,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:16:46,997 INFO L85 PathProgramCache]: Analyzing trace with hash -629669787, now seen corresponding path program 6 times [2022-10-16 14:16:46,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:16:46,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89715652] [2022-10-16 14:16:46,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:16:46,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:16:47,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:16:57,240 INFO L134 CoverageAnalysis]: Checked inductivity of 7200 backedges. 0 proven. 7200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 14:16:57,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:16:57,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89715652] [2022-10-16 14:16:57,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89715652] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:16:57,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1232736426] [2022-10-16 14:16:57,242 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-10-16 14:16:57,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:16:57,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:16:57,247 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 14:16:57,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process