/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/array-patterns/array8_pattern.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-16 11:23:08,421 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-16 11:23:08,425 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-16 11:23:08,481 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-16 11:23:08,482 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-16 11:23:08,485 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-16 11:23:08,489 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-16 11:23:08,497 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-16 11:23:08,500 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-16 11:23:08,517 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-16 11:23:08,520 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-16 11:23:08,523 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-16 11:23:08,523 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-16 11:23:08,526 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-16 11:23:08,528 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-16 11:23:08,533 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-16 11:23:08,534 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-16 11:23:08,535 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-16 11:23:08,540 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-16 11:23:08,546 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-16 11:23:08,550 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-16 11:23:08,552 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-16 11:23:08,553 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-16 11:23:08,554 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-16 11:23:08,566 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-16 11:23:08,567 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-16 11:23:08,567 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-16 11:23:08,568 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-16 11:23:08,569 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-16 11:23:08,571 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-16 11:23:08,572 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-16 11:23:08,572 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-16 11:23:08,573 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-16 11:23:08,574 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-16 11:23:08,576 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-16 11:23:08,577 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-16 11:23:08,577 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-16 11:23:08,578 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-16 11:23:08,578 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-16 11:23:08,579 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-16 11:23:08,580 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-16 11:23:08,585 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 11:23:08,637 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-16 11:23:08,637 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-16 11:23:08,638 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-16 11:23:08,638 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-16 11:23:08,639 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-16 11:23:08,639 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-16 11:23:08,642 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-16 11:23:08,642 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-16 11:23:08,642 INFO L138 SettingsManager]: * Use SBE=true [2022-10-16 11:23:08,642 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-16 11:23:08,643 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-16 11:23:08,644 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-16 11:23:08,644 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-16 11:23:08,644 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-16 11:23:08,644 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-16 11:23:08,644 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-16 11:23:08,645 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-16 11:23:08,645 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-16 11:23:08,645 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-10-16 11:23:08,645 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-16 11:23:08,645 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-16 11:23:08,646 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-16 11:23:08,646 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-16 11:23:08,646 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-16 11:23:08,646 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-16 11:23:08,646 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-16 11:23:08,647 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 11:23:08,647 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-16 11:23:08,647 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-16 11:23:08,647 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-16 11:23:08,647 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-16 11:23:08,648 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-16 11:23:08,648 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-16 11:23:08,648 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-16 11:23:09,004 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-16 11:23:09,031 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-16 11:23:09,034 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-16 11:23:09,035 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-16 11:23:09,037 INFO L275 PluginConnector]: CDTParser initialized [2022-10-16 11:23:09,039 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-patterns/array8_pattern.c [2022-10-16 11:23:09,112 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71c82060b/968e2020b04b4dd6987d47849dc38cf7/FLAG3f4d56e1d [2022-10-16 11:23:09,832 INFO L306 CDTParser]: Found 1 translation units. [2022-10-16 11:23:09,832 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-patterns/array8_pattern.c [2022-10-16 11:23:09,840 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71c82060b/968e2020b04b4dd6987d47849dc38cf7/FLAG3f4d56e1d [2022-10-16 11:23:09,856 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71c82060b/968e2020b04b4dd6987d47849dc38cf7 [2022-10-16 11:23:09,859 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-16 11:23:09,865 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-16 11:23:09,867 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-16 11:23:09,867 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-16 11:23:09,871 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-16 11:23:09,872 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 11:23:09" (1/1) ... [2022-10-16 11:23:09,873 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35f8c543 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:23:09, skipping insertion in model container [2022-10-16 11:23:09,873 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 11:23:09" (1/1) ... [2022-10-16 11:23:09,882 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-16 11:23:09,901 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-16 11:23:10,064 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/array-patterns/array8_pattern.c[1321,1334] [2022-10-16 11:23:10,090 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 11:23:10,099 INFO L203 MainTranslator]: Completed pre-run [2022-10-16 11:23:10,113 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/array-patterns/array8_pattern.c[1321,1334] [2022-10-16 11:23:10,126 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 11:23:10,140 INFO L208 MainTranslator]: Completed translation [2022-10-16 11:23:10,141 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:23:10 WrapperNode [2022-10-16 11:23:10,141 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-16 11:23:10,143 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-16 11:23:10,143 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-16 11:23:10,143 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-16 11:23:10,152 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:23:10" (1/1) ... [2022-10-16 11:23:10,172 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:23:10" (1/1) ... [2022-10-16 11:23:10,202 INFO L138 Inliner]: procedures = 16, calls = 23, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 101 [2022-10-16 11:23:10,203 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-16 11:23:10,203 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-16 11:23:10,204 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-16 11:23:10,204 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-16 11:23:10,214 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:23:10" (1/1) ... [2022-10-16 11:23:10,214 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:23:10" (1/1) ... [2022-10-16 11:23:10,217 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:23:10" (1/1) ... [2022-10-16 11:23:10,217 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:23:10" (1/1) ... [2022-10-16 11:23:10,224 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:23:10" (1/1) ... [2022-10-16 11:23:10,229 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:23:10" (1/1) ... [2022-10-16 11:23:10,231 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:23:10" (1/1) ... [2022-10-16 11:23:10,232 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:23:10" (1/1) ... [2022-10-16 11:23:10,235 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-16 11:23:10,236 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-16 11:23:10,237 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-16 11:23:10,237 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-16 11:23:10,238 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:23:10" (1/1) ... [2022-10-16 11:23:10,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 11:23:10,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:23:10,281 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 11:23:10,298 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 11:23:10,357 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-16 11:23:10,358 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-10-16 11:23:10,358 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-10-16 11:23:10,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-16 11:23:10,358 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-16 11:23:10,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-16 11:23:10,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-16 11:23:10,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-16 11:23:10,362 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-16 11:23:10,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-16 11:23:10,472 INFO L235 CfgBuilder]: Building ICFG [2022-10-16 11:23:10,475 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-16 11:23:10,795 INFO L276 CfgBuilder]: Performing block encoding [2022-10-16 11:23:10,806 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-16 11:23:10,806 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-10-16 11:23:10,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 11:23:10 BoogieIcfgContainer [2022-10-16 11:23:10,809 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-16 11:23:10,813 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-16 11:23:10,813 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-16 11:23:10,819 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-16 11:23:10,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 11:23:09" (1/3) ... [2022-10-16 11:23:10,820 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@193e14c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 11:23:10, skipping insertion in model container [2022-10-16 11:23:10,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:23:10" (2/3) ... [2022-10-16 11:23:10,821 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@193e14c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 11:23:10, skipping insertion in model container [2022-10-16 11:23:10,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 11:23:10" (3/3) ... [2022-10-16 11:23:10,823 INFO L112 eAbstractionObserver]: Analyzing ICFG array8_pattern.c [2022-10-16 11:23:10,895 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-16 11:23:10,895 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2022-10-16 11:23:11,034 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-16 11:23:11,051 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;@5f61c2e0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-16 11:23:11,052 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2022-10-16 11:23:11,060 INFO L276 IsEmpty]: Start isEmpty. Operand has 61 states, 39 states have (on average 1.7179487179487178) internal successors, (67), 57 states have internal predecessors, (67), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 11:23:11,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-10-16 11:23:11,070 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:23:11,071 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:23:11,072 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-10-16 11:23:11,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:23:11,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1194062461, now seen corresponding path program 1 times [2022-10-16 11:23:11,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:23:11,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500079250] [2022-10-16 11:23:11,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:23:11,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:23:11,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:23:11,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:23:11,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:23:11,357 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 11:23:11,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:23:11,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500079250] [2022-10-16 11:23:11,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500079250] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:23:11,359 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:23:11,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-16 11:23:11,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780973783] [2022-10-16 11:23:11,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:23:11,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-16 11:23:11,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:23:11,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-16 11:23:11,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-16 11:23:11,425 INFO L87 Difference]: Start difference. First operand has 61 states, 39 states have (on average 1.7179487179487178) internal successors, (67), 57 states have internal predecessors, (67), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-16 11:23:11,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:23:11,463 INFO L93 Difference]: Finished difference Result 119 states and 140 transitions. [2022-10-16 11:23:11,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-16 11:23:11,468 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-10-16 11:23:11,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:23:11,478 INFO L225 Difference]: With dead ends: 119 [2022-10-16 11:23:11,478 INFO L226 Difference]: Without dead ends: 55 [2022-10-16 11:23:11,483 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-16 11:23:11,487 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 11:23:11,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 11:23:11,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-10-16 11:23:11,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2022-10-16 11:23:11,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 34 states have (on average 1.6176470588235294) internal successors, (55), 51 states have internal predecessors, (55), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 11:23:11,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2022-10-16 11:23:11,540 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 11 [2022-10-16 11:23:11,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:23:11,541 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2022-10-16 11:23:11,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-16 11:23:11,542 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2022-10-16 11:23:11,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-10-16 11:23:11,543 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:23:11,543 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:23:11,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-16 11:23:11,544 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-10-16 11:23:11,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:23:11,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1325897473, now seen corresponding path program 1 times [2022-10-16 11:23:11,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:23:11,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590475096] [2022-10-16 11:23:11,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:23:11,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:23:11,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:23:11,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:23:11,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:23:11,827 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 11:23:11,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:23:11,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590475096] [2022-10-16 11:23:11,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590475096] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:23:11,828 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:23:11,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 11:23:11,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735246472] [2022-10-16 11:23:11,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:23:11,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 11:23:11,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:23:11,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 11:23:11,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 11:23:11,841 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-16 11:23:11,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:23:11,940 INFO L93 Difference]: Finished difference Result 84 states and 89 transitions. [2022-10-16 11:23:11,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 11:23:11,941 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-10-16 11:23:11,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:23:11,943 INFO L225 Difference]: With dead ends: 84 [2022-10-16 11:23:11,944 INFO L226 Difference]: Without dead ends: 82 [2022-10-16 11:23:11,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 11:23:11,946 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 25 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 11:23:11,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 131 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 11:23:11,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2022-10-16 11:23:11,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 59. [2022-10-16 11:23:11,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 38 states have (on average 1.5789473684210527) internal successors, (60), 55 states have internal predecessors, (60), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 11:23:11,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 64 transitions. [2022-10-16 11:23:11,959 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 64 transitions. Word has length 11 [2022-10-16 11:23:11,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:23:11,961 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 64 transitions. [2022-10-16 11:23:11,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-16 11:23:11,961 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 64 transitions. [2022-10-16 11:23:11,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-10-16 11:23:11,962 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:23:11,963 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:23:11,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-16 11:23:11,963 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-10-16 11:23:11,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:23:11,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1017398907, now seen corresponding path program 1 times [2022-10-16 11:23:11,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:23:11,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110994423] [2022-10-16 11:23:11,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:23:11,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:23:11,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:23:12,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:23:12,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:23:12,200 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:23:12,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:23:12,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110994423] [2022-10-16 11:23:12,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110994423] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:23:12,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1465888285] [2022-10-16 11:23:12,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:23:12,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:23:12,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:23:12,204 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 11:23:12,230 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 11:23:12,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:23:12,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-16 11:23:12,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:23:12,376 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:23:12,377 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:23:12,441 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:23:12,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1465888285] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 11:23:12,442 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 11:23:12,442 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-10-16 11:23:12,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698560584] [2022-10-16 11:23:12,443 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 11:23:12,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-10-16 11:23:12,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:23:12,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-10-16 11:23:12,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-10-16 11:23:12,446 INFO L87 Difference]: Start difference. First operand 59 states and 64 transitions. Second operand has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 12 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-16 11:23:12,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:23:12,698 INFO L93 Difference]: Finished difference Result 101 states and 111 transitions. [2022-10-16 11:23:12,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-16 11:23:12,698 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 12 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-10-16 11:23:12,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:23:12,701 INFO L225 Difference]: With dead ends: 101 [2022-10-16 11:23:12,701 INFO L226 Difference]: Without dead ends: 100 [2022-10-16 11:23:12,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=113, Invalid=229, Unknown=0, NotChecked=0, Total=342 [2022-10-16 11:23:12,705 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 80 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-16 11:23:12,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 195 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-16 11:23:12,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-10-16 11:23:12,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 70. [2022-10-16 11:23:12,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 49 states have (on average 1.5510204081632653) internal successors, (76), 66 states have internal predecessors, (76), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 11:23:12,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 80 transitions. [2022-10-16 11:23:12,719 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 80 transitions. Word has length 15 [2022-10-16 11:23:12,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:23:12,719 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 80 transitions. [2022-10-16 11:23:12,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 12 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-16 11:23:12,720 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 80 transitions. [2022-10-16 11:23:12,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-10-16 11:23:12,721 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:23:12,721 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:23:12,766 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 11:23:12,935 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 11:23:12,936 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-10-16 11:23:12,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:23:12,936 INFO L85 PathProgramCache]: Analyzing trace with hash -2126530071, now seen corresponding path program 1 times [2022-10-16 11:23:12,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:23:12,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127639131] [2022-10-16 11:23:12,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:23:12,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:23:12,957 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:23:12,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [649091236] [2022-10-16 11:23:12,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:23:12,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:23:12,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:23:12,960 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 11:23:12,977 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 11:23:13,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:23:13,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 7 conjunts are in the unsatisfiable core [2022-10-16 11:23:13,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:23:13,084 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:23:13,084 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 11:23:13,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:23:13,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127639131] [2022-10-16 11:23:13,085 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:23:13,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [649091236] [2022-10-16 11:23:13,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [649091236] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:23:13,086 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:23:13,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-16 11:23:13,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995477659] [2022-10-16 11:23:13,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:23:13,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-16 11:23:13,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:23:13,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-16 11:23:13,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-10-16 11:23:13,089 INFO L87 Difference]: Start difference. First operand 70 states and 80 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 11:23:13,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:23:13,194 INFO L93 Difference]: Finished difference Result 132 states and 145 transitions. [2022-10-16 11:23:13,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-16 11:23:13,194 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2022-10-16 11:23:13,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:23:13,196 INFO L225 Difference]: With dead ends: 132 [2022-10-16 11:23:13,196 INFO L226 Difference]: Without dead ends: 86 [2022-10-16 11:23:13,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-10-16 11:23:13,199 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 71 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 11:23:13,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 160 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 11:23:13,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-10-16 11:23:13,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 73. [2022-10-16 11:23:13,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 52 states have (on average 1.4807692307692308) internal successors, (77), 68 states have internal predecessors, (77), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 11:23:13,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 81 transitions. [2022-10-16 11:23:13,211 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 81 transitions. Word has length 17 [2022-10-16 11:23:13,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:23:13,211 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 81 transitions. [2022-10-16 11:23:13,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 11:23:13,212 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 81 transitions. [2022-10-16 11:23:13,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-10-16 11:23:13,213 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:23:13,213 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:23:13,244 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-10-16 11:23:13,427 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 11:23:13,429 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-10-16 11:23:13,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:23:13,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1474595093, now seen corresponding path program 1 times [2022-10-16 11:23:13,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:23:13,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816413896] [2022-10-16 11:23:13,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:23:13,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:23:13,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:23:13,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:23:13,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:23:13,670 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:23:13,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:23:13,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816413896] [2022-10-16 11:23:13,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816413896] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:23:13,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1856358888] [2022-10-16 11:23:13,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:23:13,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:23:13,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:23:13,684 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 11:23:13,710 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 11:23:13,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:23:13,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-16 11:23:13,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:23:13,831 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:23:13,832 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 11:23:13,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1856358888] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:23:13,832 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 11:23:13,832 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-10-16 11:23:13,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611698172] [2022-10-16 11:23:13,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:23:13,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-16 11:23:13,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:23:13,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-16 11:23:13,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-10-16 11:23:13,839 INFO L87 Difference]: Start difference. First operand 73 states and 81 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-16 11:23:13,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:23:13,939 INFO L93 Difference]: Finished difference Result 86 states and 94 transitions. [2022-10-16 11:23:13,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-16 11:23:13,940 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-10-16 11:23:13,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:23:13,944 INFO L225 Difference]: With dead ends: 86 [2022-10-16 11:23:13,944 INFO L226 Difference]: Without dead ends: 84 [2022-10-16 11:23:13,945 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 11:23:13,953 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 56 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 11:23:13,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 135 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 11:23:13,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-10-16 11:23:13,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 71. [2022-10-16 11:23:13,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 52 states have (on average 1.4038461538461537) internal successors, (73), 66 states have internal predecessors, (73), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 11:23:13,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 77 transitions. [2022-10-16 11:23:13,976 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 77 transitions. Word has length 16 [2022-10-16 11:23:13,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:23:13,976 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 77 transitions. [2022-10-16 11:23:13,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-16 11:23:13,979 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 77 transitions. [2022-10-16 11:23:13,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-10-16 11:23:13,981 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:23:13,981 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:23:14,022 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 11:23:14,194 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 11:23:14,195 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-10-16 11:23:14,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:23:14,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1051293083, now seen corresponding path program 1 times [2022-10-16 11:23:14,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:23:14,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092693905] [2022-10-16 11:23:14,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:23:14,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:23:14,216 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:23:14,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1914149985] [2022-10-16 11:23:14,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:23:14,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:23:14,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:23:14,218 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 11:23:14,223 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 11:23:14,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:23:14,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-16 11:23:14,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:23:14,339 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-16 11:23:14,339 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 11:23:14,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:23:14,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092693905] [2022-10-16 11:23:14,341 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:23:14,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1914149985] [2022-10-16 11:23:14,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1914149985] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:23:14,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:23:14,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 11:23:14,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077316230] [2022-10-16 11:23:14,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:23:14,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 11:23:14,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:23:14,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 11:23:14,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-16 11:23:14,346 INFO L87 Difference]: Start difference. First operand 71 states and 77 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 11:23:14,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:23:14,396 INFO L93 Difference]: Finished difference Result 71 states and 77 transitions. [2022-10-16 11:23:14,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 11:23:14,397 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 21 [2022-10-16 11:23:14,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:23:14,399 INFO L225 Difference]: With dead ends: 71 [2022-10-16 11:23:14,399 INFO L226 Difference]: Without dead ends: 69 [2022-10-16 11:23:14,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-16 11:23:14,403 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 52 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 11:23:14,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 68 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 11:23:14,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-10-16 11:23:14,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2022-10-16 11:23:14,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 52 states have (on average 1.3653846153846154) internal successors, (71), 64 states have internal predecessors, (71), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 11:23:14,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 75 transitions. [2022-10-16 11:23:14,431 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 75 transitions. Word has length 21 [2022-10-16 11:23:14,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:23:14,432 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 75 transitions. [2022-10-16 11:23:14,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 11:23:14,432 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 75 transitions. [2022-10-16 11:23:14,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-10-16 11:23:14,434 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:23:14,434 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:23:14,461 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 11:23:14,642 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 11:23:14,643 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-10-16 11:23:14,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:23:14,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1769652861, now seen corresponding path program 1 times [2022-10-16 11:23:14,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:23:14,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107935577] [2022-10-16 11:23:14,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:23:14,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:23:14,670 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:23:14,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1862131383] [2022-10-16 11:23:14,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:23:14,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:23:14,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:23:14,672 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 11:23:14,691 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 11:23:14,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:23:14,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-16 11:23:14,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:23:14,820 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-16 11:23:14,820 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 11:23:14,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:23:14,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107935577] [2022-10-16 11:23:14,821 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:23:14,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1862131383] [2022-10-16 11:23:14,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1862131383] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:23:14,821 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:23:14,821 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 11:23:14,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772773169] [2022-10-16 11:23:14,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:23:14,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 11:23:14,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:23:14,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 11:23:14,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-16 11:23:14,823 INFO L87 Difference]: Start difference. First operand 69 states and 75 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 11:23:14,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:23:14,866 INFO L93 Difference]: Finished difference Result 69 states and 75 transitions. [2022-10-16 11:23:14,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 11:23:14,867 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 22 [2022-10-16 11:23:14,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:23:14,868 INFO L225 Difference]: With dead ends: 69 [2022-10-16 11:23:14,868 INFO L226 Difference]: Without dead ends: 67 [2022-10-16 11:23:14,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-16 11:23:14,870 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 47 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 11:23:14,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 68 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 11:23:14,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-10-16 11:23:14,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2022-10-16 11:23:14,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 52 states have (on average 1.3269230769230769) internal successors, (69), 62 states have internal predecessors, (69), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 11:23:14,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 73 transitions. [2022-10-16 11:23:14,882 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 73 transitions. Word has length 22 [2022-10-16 11:23:14,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:23:14,883 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 73 transitions. [2022-10-16 11:23:14,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 11:23:14,883 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 73 transitions. [2022-10-16 11:23:14,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-10-16 11:23:14,884 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:23:14,884 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:23:14,922 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 11:23:15,097 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 11:23:15,098 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-10-16 11:23:15,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:23:15,099 INFO L85 PathProgramCache]: Analyzing trace with hash -975336089, now seen corresponding path program 1 times [2022-10-16 11:23:15,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:23:15,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037308399] [2022-10-16 11:23:15,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:23:15,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:23:15,126 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:23:15,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [381149164] [2022-10-16 11:23:15,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:23:15,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:23:15,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:23:15,128 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 11:23:15,146 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 11:23:15,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:23:15,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-16 11:23:15,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:23:15,245 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-16 11:23:15,246 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 11:23:15,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:23:15,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037308399] [2022-10-16 11:23:15,246 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:23:15,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [381149164] [2022-10-16 11:23:15,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [381149164] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:23:15,247 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:23:15,247 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 11:23:15,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617573957] [2022-10-16 11:23:15,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:23:15,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 11:23:15,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:23:15,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 11:23:15,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-16 11:23:15,249 INFO L87 Difference]: Start difference. First operand 67 states and 73 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 11:23:15,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:23:15,284 INFO L93 Difference]: Finished difference Result 80 states and 86 transitions. [2022-10-16 11:23:15,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 11:23:15,285 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 23 [2022-10-16 11:23:15,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:23:15,286 INFO L225 Difference]: With dead ends: 80 [2022-10-16 11:23:15,286 INFO L226 Difference]: Without dead ends: 79 [2022-10-16 11:23:15,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-16 11:23:15,288 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 74 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 11:23:15,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 63 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 11:23:15,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-10-16 11:23:15,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 66. [2022-10-16 11:23:15,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 52 states have (on average 1.3076923076923077) internal successors, (68), 61 states have internal predecessors, (68), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 11:23:15,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 72 transitions. [2022-10-16 11:23:15,305 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 72 transitions. Word has length 23 [2022-10-16 11:23:15,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:23:15,307 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 72 transitions. [2022-10-16 11:23:15,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 11:23:15,308 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 72 transitions. [2022-10-16 11:23:15,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-10-16 11:23:15,311 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:23:15,311 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:23:15,351 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 11:23:15,526 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 11:23:15,527 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-10-16 11:23:15,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:23:15,528 INFO L85 PathProgramCache]: Analyzing trace with hash -925816081, now seen corresponding path program 2 times [2022-10-16 11:23:15,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:23:15,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29541567] [2022-10-16 11:23:15,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:23:15,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:23:15,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:23:15,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:23:15,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:23:15,819 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:23:15,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:23:15,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29541567] [2022-10-16 11:23:15,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29541567] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:23:15,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040533970] [2022-10-16 11:23:15,820 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 11:23:15,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:23:15,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:23:15,821 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 11:23:15,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-10-16 11:23:15,912 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-10-16 11:23:15,912 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 11:23:15,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-16 11:23:15,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:23:15,980 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-10-16 11:23:15,980 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:23:16,062 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-10-16 11:23:16,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2040533970] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 11:23:16,063 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 11:23:16,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 17 [2022-10-16 11:23:16,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278902861] [2022-10-16 11:23:16,064 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 11:23:16,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-10-16 11:23:16,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:23:16,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-10-16 11:23:16,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2022-10-16 11:23:16,066 INFO L87 Difference]: Start difference. First operand 66 states and 72 transitions. Second operand has 18 states, 17 states have (on average 2.7058823529411766) internal successors, (46), 18 states have internal predecessors, (46), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-16 11:23:16,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:23:16,382 INFO L93 Difference]: Finished difference Result 90 states and 99 transitions. [2022-10-16 11:23:16,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-16 11:23:16,383 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.7058823529411766) internal successors, (46), 18 states have internal predecessors, (46), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 27 [2022-10-16 11:23:16,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:23:16,384 INFO L225 Difference]: With dead ends: 90 [2022-10-16 11:23:16,384 INFO L226 Difference]: Without dead ends: 87 [2022-10-16 11:23:16,385 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=273, Invalid=657, Unknown=0, NotChecked=0, Total=930 [2022-10-16 11:23:16,386 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 241 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 11:23:16,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 219 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 11:23:16,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2022-10-16 11:23:16,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 49. [2022-10-16 11:23:16,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 37 states have (on average 1.2972972972972974) internal successors, (48), 44 states have internal predecessors, (48), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 11:23:16,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 52 transitions. [2022-10-16 11:23:16,405 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 52 transitions. Word has length 27 [2022-10-16 11:23:16,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:23:16,405 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 52 transitions. [2022-10-16 11:23:16,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.7058823529411766) internal successors, (46), 18 states have internal predecessors, (46), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-16 11:23:16,406 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 52 transitions. [2022-10-16 11:23:16,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-10-16 11:23:16,407 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:23:16,407 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:23:16,491 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-10-16 11:23:16,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:23:16,613 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-10-16 11:23:16,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:23:16,614 INFO L85 PathProgramCache]: Analyzing trace with hash 552982255, now seen corresponding path program 1 times [2022-10-16 11:23:16,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:23:16,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100787385] [2022-10-16 11:23:16,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:23:16,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:23:16,634 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:23:16,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [697334755] [2022-10-16 11:23:16,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:23:16,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:23:16,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:23:16,645 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:23:16,664 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-10-16 11:23:16,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:23:16,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 25 conjunts are in the unsatisfiable core [2022-10-16 11:23:16,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:23:16,776 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-10-16 11:23:17,048 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-10-16 11:23:17,195 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 23 [2022-10-16 11:23:17,384 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-16 11:23:17,387 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-16 11:23:17,387 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 13 [2022-10-16 11:23:17,525 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:23:17,525 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:23:17,605 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_270 (Array Int Int))) (< (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array2~0#1.base| v_ArrVal_270) |c_ULTIMATE.start_main_~#array1~0#1.base|) |c_ULTIMATE.start_main_~#array1~0#1.offset|) |c_ULTIMATE.start_main_~sum~0#1|) 9223372036854775808)) is different from false [2022-10-16 11:23:17,628 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-16 11:23:17,629 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2022-10-16 11:23:17,638 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-16 11:23:17,639 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 39 [2022-10-16 11:23:17,643 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-10-16 11:23:19,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:23:19,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100787385] [2022-10-16 11:23:19,281 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:23:19,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [697334755] [2022-10-16 11:23:19,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [697334755] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:23:19,282 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-16 11:23:19,282 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2022-10-16 11:23:19,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69591650] [2022-10-16 11:23:19,283 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-16 11:23:19,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-10-16 11:23:19,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:23:19,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-10-16 11:23:19,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=364, Unknown=2, NotChecked=38, Total=462 [2022-10-16 11:23:19,284 INFO L87 Difference]: Start difference. First operand 49 states and 52 transitions. Second operand has 15 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 11:23:40,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:23:40,198 INFO L93 Difference]: Finished difference Result 80 states and 87 transitions. [2022-10-16 11:23:40,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-16 11:23:40,198 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 30 [2022-10-16 11:23:40,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:23:40,200 INFO L225 Difference]: With dead ends: 80 [2022-10-16 11:23:40,200 INFO L226 Difference]: Without dead ends: 79 [2022-10-16 11:23:40,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 22.6s TimeCoverageRelationStatistics Valid=111, Invalid=593, Unknown=2, NotChecked=50, Total=756 [2022-10-16 11:23:40,201 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 36 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 110 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 11:23:40,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 275 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 141 Invalid, 0 Unknown, 110 Unchecked, 0.1s Time] [2022-10-16 11:23:40,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-10-16 11:23:40,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 70. [2022-10-16 11:23:40,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 56 states have (on average 1.25) internal successors, (70), 63 states have internal predecessors, (70), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-16 11:23:40,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 76 transitions. [2022-10-16 11:23:40,211 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 76 transitions. Word has length 30 [2022-10-16 11:23:40,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:23:40,211 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 76 transitions. [2022-10-16 11:23:40,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 11:23:40,211 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 76 transitions. [2022-10-16 11:23:40,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-10-16 11:23:40,212 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:23:40,212 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:23:40,252 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-10-16 11:23:40,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-10-16 11:23:40,427 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-10-16 11:23:40,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:23:40,428 INFO L85 PathProgramCache]: Analyzing trace with hash -37419177, now seen corresponding path program 1 times [2022-10-16 11:23:40,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:23:40,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783667197] [2022-10-16 11:23:40,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:23:40,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:23:40,449 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:23:40,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1305484418] [2022-10-16 11:23:40,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:23:40,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:23:40,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:23:40,451 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:23:40,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-10-16 11:23:40,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:23:40,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 27 conjunts are in the unsatisfiable core [2022-10-16 11:23:40,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:23:40,539 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-10-16 11:23:40,749 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-10-16 11:23:40,903 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 23 [2022-10-16 11:23:41,087 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-16 11:23:41,089 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-16 11:23:41,090 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 13 [2022-10-16 11:23:41,173 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:23:41,173 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:23:41,253 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_305 (Array Int Int))) (< 0 (+ 9223372036854775809 |c_ULTIMATE.start_main_~sum~0#1| (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array2~0#1.base| v_ArrVal_305) |c_ULTIMATE.start_main_~#array1~0#1.base|) |c_ULTIMATE.start_main_~#array1~0#1.offset|)))) is different from false [2022-10-16 11:23:41,286 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-16 11:23:41,286 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 26 [2022-10-16 11:23:41,300 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-16 11:23:41,301 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 41 [2022-10-16 11:23:41,305 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2022-10-16 11:23:41,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:23:41,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783667197] [2022-10-16 11:23:41,562 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:23:41,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305484418] [2022-10-16 11:23:41,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1305484418] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:23:41,563 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-16 11:23:41,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2022-10-16 11:23:41,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791783389] [2022-10-16 11:23:41,563 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-16 11:23:41,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-10-16 11:23:41,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:23:41,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-10-16 11:23:41,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=294, Unknown=1, NotChecked=34, Total=380 [2022-10-16 11:23:41,565 INFO L87 Difference]: Start difference. First operand 70 states and 76 transitions. Second operand has 14 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 11:23:41,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:23:41,845 INFO L93 Difference]: Finished difference Result 78 states and 85 transitions. [2022-10-16 11:23:41,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-10-16 11:23:41,845 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 31 [2022-10-16 11:23:41,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:23:41,846 INFO L225 Difference]: With dead ends: 78 [2022-10-16 11:23:41,846 INFO L226 Difference]: Without dead ends: 77 [2022-10-16 11:23:41,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=89, Invalid=466, Unknown=1, NotChecked=44, Total=600 [2022-10-16 11:23:41,848 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 31 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 67 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 11:23:41,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 227 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 134 Invalid, 0 Unknown, 67 Unchecked, 0.1s Time] [2022-10-16 11:23:41,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-10-16 11:23:41,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 71. [2022-10-16 11:23:41,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 57 states have (on average 1.2456140350877194) internal successors, (71), 64 states have internal predecessors, (71), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-16 11:23:41,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 77 transitions. [2022-10-16 11:23:41,858 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 77 transitions. Word has length 31 [2022-10-16 11:23:41,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:23:41,858 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 77 transitions. [2022-10-16 11:23:41,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 11:23:41,859 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 77 transitions. [2022-10-16 11:23:41,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-10-16 11:23:41,862 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:23:41,862 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:23:41,905 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-10-16 11:23:42,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:23:42,077 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-10-16 11:23:42,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:23:42,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1159994383, now seen corresponding path program 1 times [2022-10-16 11:23:42,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:23:42,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850925001] [2022-10-16 11:23:42,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:23:42,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:23:42,089 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:23:42,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2033813409] [2022-10-16 11:23:42,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:23:42,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:23:42,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:23:42,091 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:23:42,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-10-16 11:23:42,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:23:42,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 32 conjunts are in the unsatisfiable core [2022-10-16 11:23:42,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:23:42,206 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-10-16 11:23:42,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 11:23:42,226 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 18 [2022-10-16 11:23:42,230 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-10-16 11:23:42,476 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-10-16 11:23:42,548 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-16 11:23:42,551 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-16 11:23:42,551 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 28 [2022-10-16 11:23:42,718 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-16 11:23:42,721 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-16 11:23:42,721 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 10 [2022-10-16 11:23:42,743 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:23:42,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:23:42,964 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_342 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_342) |c_ULTIMATE.start_main_~#array2~0#1.base|) |c_ULTIMATE.start_main_~#array2~0#1.offset|) 1)) is different from false [2022-10-16 11:23:43,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:23:43,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850925001] [2022-10-16 11:23:43,045 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:23:43,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2033813409] [2022-10-16 11:23:43,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2033813409] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:23:43,045 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-16 11:23:43,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2022-10-16 11:23:43,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852527535] [2022-10-16 11:23:43,046 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-16 11:23:43,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-10-16 11:23:43,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:23:43,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-10-16 11:23:43,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=425, Unknown=1, NotChecked=42, Total=552 [2022-10-16 11:23:43,047 INFO L87 Difference]: Start difference. First operand 71 states and 77 transitions. Second operand has 17 states, 16 states have (on average 1.75) internal successors, (28), 16 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 11:23:43,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:23:43,244 INFO L93 Difference]: Finished difference Result 111 states and 121 transitions. [2022-10-16 11:23:43,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-10-16 11:23:43,245 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.75) internal successors, (28), 16 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 32 [2022-10-16 11:23:43,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:23:43,248 INFO L225 Difference]: With dead ends: 111 [2022-10-16 11:23:43,248 INFO L226 Difference]: Without dead ends: 76 [2022-10-16 11:23:43,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=102, Invalid=501, Unknown=1, NotChecked=46, Total=650 [2022-10-16 11:23:43,252 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 22 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 126 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 11:23:43,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 347 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 101 Invalid, 0 Unknown, 126 Unchecked, 0.1s Time] [2022-10-16 11:23:43,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-10-16 11:23:43,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 72. [2022-10-16 11:23:43,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 58 states have (on average 1.2241379310344827) internal successors, (71), 65 states have internal predecessors, (71), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-16 11:23:43,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 77 transitions. [2022-10-16 11:23:43,263 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 77 transitions. Word has length 32 [2022-10-16 11:23:43,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:23:43,263 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 77 transitions. [2022-10-16 11:23:43,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.75) internal successors, (28), 16 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 11:23:43,264 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 77 transitions. [2022-10-16 11:23:43,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-10-16 11:23:43,269 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:23:43,269 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:23:43,309 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-10-16 11:23:43,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-10-16 11:23:43,479 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-10-16 11:23:43,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:23:43,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1600087399, now seen corresponding path program 1 times [2022-10-16 11:23:43,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:23:43,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129633871] [2022-10-16 11:23:43,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:23:43,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:23:43,497 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:23:43,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1826424033] [2022-10-16 11:23:43,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:23:43,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:23:43,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:23:43,499 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:23:43,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-10-16 11:23:43,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:23:43,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 30 conjunts are in the unsatisfiable core [2022-10-16 11:23:43,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:23:43,595 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-10-16 11:23:43,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 11:23:43,614 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 18 [2022-10-16 11:23:43,617 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-10-16 11:23:43,869 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-10-16 11:23:43,952 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-16 11:23:43,955 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-16 11:23:43,955 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 28 [2022-10-16 11:23:44,042 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-10-16 11:23:44,066 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:23:44,066 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:23:44,242 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_380 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_380) |c_ULTIMATE.start_main_~#array2~0#1.base|) |c_ULTIMATE.start_main_~#array2~0#1.offset|) 1))) is different from false [2022-10-16 11:23:44,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:23:44,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129633871] [2022-10-16 11:23:44,314 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:23:44,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1826424033] [2022-10-16 11:23:44,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1826424033] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:23:44,314 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-16 11:23:44,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2022-10-16 11:23:44,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123512656] [2022-10-16 11:23:44,315 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-16 11:23:44,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-10-16 11:23:44,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:23:44,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-10-16 11:23:44,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=348, Unknown=1, NotChecked=38, Total=462 [2022-10-16 11:23:44,317 INFO L87 Difference]: Start difference. First operand 72 states and 77 transitions. Second operand has 16 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 11:23:44,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:23:44,686 INFO L93 Difference]: Finished difference Result 107 states and 113 transitions. [2022-10-16 11:23:44,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-10-16 11:23:44,686 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 33 [2022-10-16 11:23:44,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:23:44,687 INFO L225 Difference]: With dead ends: 107 [2022-10-16 11:23:44,688 INFO L226 Difference]: Without dead ends: 106 [2022-10-16 11:23:44,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=130, Invalid=523, Unknown=1, NotChecked=48, Total=702 [2022-10-16 11:23:44,689 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 114 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 32 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-16 11:23:44,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 316 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 177 Invalid, 0 Unknown, 32 Unchecked, 0.2s Time] [2022-10-16 11:23:44,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2022-10-16 11:23:44,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 73. [2022-10-16 11:23:44,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 59 states have (on average 1.2203389830508475) internal successors, (72), 66 states have internal predecessors, (72), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-16 11:23:44,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 78 transitions. [2022-10-16 11:23:44,701 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 78 transitions. Word has length 33 [2022-10-16 11:23:44,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:23:44,701 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 78 transitions. [2022-10-16 11:23:44,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 11:23:44,702 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 78 transitions. [2022-10-16 11:23:44,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-10-16 11:23:44,702 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:23:44,703 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:23:44,738 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-10-16 11:23:44,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-10-16 11:23:44,918 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-10-16 11:23:44,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:23:44,919 INFO L85 PathProgramCache]: Analyzing trace with hash -807489549, now seen corresponding path program 2 times [2022-10-16 11:23:44,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:23:44,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647404258] [2022-10-16 11:23:44,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:23:44,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:23:44,934 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:23:44,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2084860240] [2022-10-16 11:23:44,937 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 11:23:44,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:23:44,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:23:44,947 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:23:44,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-10-16 11:23:45,021 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 11:23:45,022 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 11:23:45,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 38 conjunts are in the unsatisfiable core [2022-10-16 11:23:45,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:23:45,039 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-10-16 11:23:45,059 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 18 [2022-10-16 11:23:45,063 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-10-16 11:23:45,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 11:23:45,179 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-10-16 11:23:45,186 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 25 [2022-10-16 11:23:45,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 11:23:45,605 INFO L356 Elim1Store]: treesize reduction 34, result has 49.3 percent of original size [2022-10-16 11:23:45,605 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 50 [2022-10-16 11:23:52,368 INFO L356 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2022-10-16 11:23:52,369 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 70 treesize of output 67 [2022-10-16 11:24:06,987 WARN L233 SmtUtils]: Spent 10.24s on a formula simplification. DAG size of input: 46 DAG size of output: 42 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-10-16 11:24:12,535 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-16 11:24:12,536 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 67 treesize of output 75 [2022-10-16 11:24:32,875 WARN L233 SmtUtils]: Spent 6.44s on a formula simplification. DAG size of input: 15 DAG size of output: 13 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-10-16 11:24:32,877 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:24:32,877 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:24:45,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:24:45,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647404258] [2022-10-16 11:24:45,311 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:24:45,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2084860240] [2022-10-16 11:24:45,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2084860240] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:24:45,312 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-16 11:24:45,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2022-10-16 11:24:45,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300356966] [2022-10-16 11:24:45,312 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-16 11:24:45,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-10-16 11:24:45,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:24:45,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-10-16 11:24:45,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=283, Unknown=17, NotChecked=0, Total=380 [2022-10-16 11:24:45,314 INFO L87 Difference]: Start difference. First operand 73 states and 78 transitions. Second operand has 14 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 14 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 11:24:55,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:24:55,570 INFO L93 Difference]: Finished difference Result 97 states and 106 transitions. [2022-10-16 11:24:55,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-10-16 11:24:55,571 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 14 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 34 [2022-10-16 11:24:55,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:24:55,572 INFO L225 Difference]: With dead ends: 97 [2022-10-16 11:24:55,572 INFO L226 Difference]: Without dead ends: 96 [2022-10-16 11:24:55,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 69.1s TimeCoverageRelationStatistics Valid=99, Invalid=343, Unknown=20, NotChecked=0, Total=462 [2022-10-16 11:24:55,574 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 23 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 196 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 11:24:55,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 323 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 105 Invalid, 0 Unknown, 196 Unchecked, 0.1s Time] [2022-10-16 11:24:55,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2022-10-16 11:24:55,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 94. [2022-10-16 11:24:55,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 78 states have (on average 1.205128205128205) internal successors, (94), 85 states have internal predecessors, (94), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-16 11:24:55,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 102 transitions. [2022-10-16 11:24:55,588 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 102 transitions. Word has length 34 [2022-10-16 11:24:55,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:24:55,588 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 102 transitions. [2022-10-16 11:24:55,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 14 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 11:24:55,589 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 102 transitions. [2022-10-16 11:24:55,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-10-16 11:24:55,589 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:24:55,590 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:24:55,614 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-10-16 11:24:55,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-10-16 11:24:55,798 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-10-16 11:24:55,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:24:55,799 INFO L85 PathProgramCache]: Analyzing trace with hash -85695013, now seen corresponding path program 1 times [2022-10-16 11:24:55,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:24:55,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898894256] [2022-10-16 11:24:55,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:24:55,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:24:55,820 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:24:55,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [566557993] [2022-10-16 11:24:55,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:24:55,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:24:55,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:24:55,822 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:24:55,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-10-16 11:24:55,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:24:55,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-16 11:24:55,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:24:55,917 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-16 11:24:55,917 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 11:24:55,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:24:55,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898894256] [2022-10-16 11:24:55,918 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:24:55,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [566557993] [2022-10-16 11:24:55,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [566557993] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:24:55,918 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:24:55,918 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 11:24:55,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435320784] [2022-10-16 11:24:55,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:24:55,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 11:24:55,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:24:55,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 11:24:55,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 11:24:55,920 INFO L87 Difference]: Start difference. First operand 94 states and 102 transitions. Second operand has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-16 11:24:55,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:24:55,976 INFO L93 Difference]: Finished difference Result 107 states and 115 transitions. [2022-10-16 11:24:55,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 11:24:55,976 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 35 [2022-10-16 11:24:55,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:24:55,977 INFO L225 Difference]: With dead ends: 107 [2022-10-16 11:24:55,977 INFO L226 Difference]: Without dead ends: 106 [2022-10-16 11:24:55,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 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 11:24:55,979 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 12 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 11:24:55,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 104 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 11:24:55,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2022-10-16 11:24:55,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 100. [2022-10-16 11:24:55,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 84 states have (on average 1.2380952380952381) internal successors, (104), 91 states have internal predecessors, (104), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-16 11:24:55,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 112 transitions. [2022-10-16 11:24:55,993 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 112 transitions. Word has length 35 [2022-10-16 11:24:55,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:24:55,994 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 112 transitions. [2022-10-16 11:24:55,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-16 11:24:55,994 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 112 transitions. [2022-10-16 11:24:55,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-10-16 11:24:55,995 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:24:55,995 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:24:56,026 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-10-16 11:24:56,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-10-16 11:24:56,210 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-10-16 11:24:56,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:24:56,211 INFO L85 PathProgramCache]: Analyzing trace with hash 737627859, now seen corresponding path program 2 times [2022-10-16 11:24:56,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:24:56,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69008243] [2022-10-16 11:24:56,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:24:56,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:24:56,230 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:24:56,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1617838443] [2022-10-16 11:24:56,230 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 11:24:56,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:24:56,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:24:56,231 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:24:56,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-10-16 11:24:56,312 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 11:24:56,312 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 11:24:56,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 36 conjunts are in the unsatisfiable core [2022-10-16 11:24:56,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:24:56,328 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-10-16 11:24:56,351 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 18 [2022-10-16 11:24:56,356 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-10-16 11:24:56,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 11:24:56,432 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-10-16 11:24:56,438 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 25 [2022-10-16 11:24:56,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 11:24:56,855 INFO L356 Elim1Store]: treesize reduction 34, result has 49.3 percent of original size [2022-10-16 11:24:56,856 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 50 [2022-10-16 11:24:57,175 INFO L356 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2022-10-16 11:24:57,175 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 70 treesize of output 67 [2022-10-16 11:24:57,899 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-16 11:24:57,899 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 71 treesize of output 79 [2022-10-16 11:24:58,116 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:24:58,117 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:25:02,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:25:02,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69008243] [2022-10-16 11:25:02,461 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:25:02,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1617838443] [2022-10-16 11:25:02,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1617838443] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:25:02,462 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-16 11:25:02,462 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2022-10-16 11:25:02,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551375015] [2022-10-16 11:25:02,462 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-16 11:25:02,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-10-16 11:25:02,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:25:02,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-10-16 11:25:02,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=238, Unknown=2, NotChecked=0, Total=306 [2022-10-16 11:25:02,464 INFO L87 Difference]: Start difference. First operand 100 states and 112 transitions. Second operand has 13 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 13 states have internal predecessors, (31), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 11:25:02,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:25:02,734 INFO L93 Difference]: Finished difference Result 127 states and 143 transitions. [2022-10-16 11:25:02,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-10-16 11:25:02,735 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 13 states have internal predecessors, (31), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 35 [2022-10-16 11:25:02,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:25:02,736 INFO L225 Difference]: With dead ends: 127 [2022-10-16 11:25:02,736 INFO L226 Difference]: Without dead ends: 126 [2022-10-16 11:25:02,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=84, Invalid=294, Unknown=2, NotChecked=0, Total=380 [2022-10-16 11:25:02,738 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 41 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 219 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 11:25:02,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 298 Invalid, 378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 154 Invalid, 0 Unknown, 219 Unchecked, 0.1s Time] [2022-10-16 11:25:02,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2022-10-16 11:25:02,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 101. [2022-10-16 11:25:02,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 85 states have (on average 1.2352941176470589) internal successors, (105), 92 states have internal predecessors, (105), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-16 11:25:02,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 113 transitions. [2022-10-16 11:25:02,753 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 113 transitions. Word has length 35 [2022-10-16 11:25:02,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:25:02,753 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 113 transitions. [2022-10-16 11:25:02,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 13 states have internal predecessors, (31), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 11:25:02,753 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 113 transitions. [2022-10-16 11:25:02,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-10-16 11:25:02,754 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:25:02,754 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:25:02,784 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-10-16 11:25:02,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:25:02,969 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-10-16 11:25:02,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:25:02,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1638422005, now seen corresponding path program 1 times [2022-10-16 11:25:02,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:25:02,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594845809] [2022-10-16 11:25:02,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:25:02,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:25:03,006 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:25:03,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [142117896] [2022-10-16 11:25:03,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:25:03,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:25:03,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:25:03,008 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:25:03,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-10-16 11:25:03,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:25:03,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-16 11:25:03,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:25:03,106 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-16 11:25:03,106 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 11:25:03,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:25:03,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594845809] [2022-10-16 11:25:03,107 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:25:03,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [142117896] [2022-10-16 11:25:03,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [142117896] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:25:03,107 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:25:03,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 11:25:03,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680730776] [2022-10-16 11:25:03,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:25:03,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 11:25:03,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:25:03,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 11:25:03,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 11:25:03,112 INFO L87 Difference]: Start difference. First operand 101 states and 113 transitions. Second operand has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-16 11:25:03,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:25:03,163 INFO L93 Difference]: Finished difference Result 101 states and 113 transitions. [2022-10-16 11:25:03,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 11:25:03,163 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 36 [2022-10-16 11:25:03,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:25:03,165 INFO L225 Difference]: With dead ends: 101 [2022-10-16 11:25:03,165 INFO L226 Difference]: Without dead ends: 100 [2022-10-16 11:25:03,166 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 33 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 11:25:03,169 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 27 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 11:25:03,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 69 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 11:25:03,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-10-16 11:25:03,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2022-10-16 11:25:03,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 85 states have (on average 1.223529411764706) internal successors, (104), 91 states have internal predecessors, (104), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-16 11:25:03,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 112 transitions. [2022-10-16 11:25:03,187 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 112 transitions. Word has length 36 [2022-10-16 11:25:03,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:25:03,187 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 112 transitions. [2022-10-16 11:25:03,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-16 11:25:03,188 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 112 transitions. [2022-10-16 11:25:03,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-10-16 11:25:03,188 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:25:03,188 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:25:03,236 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-10-16 11:25:03,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-10-16 11:25:03,404 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-10-16 11:25:03,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:25:03,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1391627253, now seen corresponding path program 2 times [2022-10-16 11:25:03,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:25:03,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926718407] [2022-10-16 11:25:03,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:25:03,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:25:03,421 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:25:03,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1763706054] [2022-10-16 11:25:03,422 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 11:25:03,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:25:03,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:25:03,423 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:25:03,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-10-16 11:25:03,503 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 11:25:03,504 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 11:25:03,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 37 conjunts are in the unsatisfiable core [2022-10-16 11:25:03,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:25:03,519 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-10-16 11:25:03,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 11:25:03,538 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 18 [2022-10-16 11:25:03,543 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-10-16 11:25:03,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 11:25:03,616 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 33 [2022-10-16 11:25:04,789 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 25 [2022-10-16 11:25:04,860 INFO L356 Elim1Store]: treesize reduction 31, result has 18.4 percent of original size [2022-10-16 11:25:04,861 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 22 [2022-10-16 11:25:04,947 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-10-16 11:25:04,966 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:25:04,966 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:25:05,136 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_606 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_606) |c_ULTIMATE.start_main_~#array2~0#1.base|) |c_ULTIMATE.start_main_~#array2~0#1.offset|) 1)) is different from false [2022-10-16 11:25:05,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:25:05,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926718407] [2022-10-16 11:25:05,155 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:25:05,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1763706054] [2022-10-16 11:25:05,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1763706054] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:25:05,155 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-16 11:25:05,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2022-10-16 11:25:05,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902166596] [2022-10-16 11:25:05,156 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-16 11:25:05,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-10-16 11:25:05,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:25:05,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-10-16 11:25:05,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=248, Unknown=2, NotChecked=32, Total=342 [2022-10-16 11:25:05,157 INFO L87 Difference]: Start difference. First operand 100 states and 112 transitions. Second operand has 13 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 13 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 11:25:07,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:25:07,977 INFO L93 Difference]: Finished difference Result 157 states and 174 transitions. [2022-10-16 11:25:07,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-10-16 11:25:07,978 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 13 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 36 [2022-10-16 11:25:07,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:25:07,980 INFO L225 Difference]: With dead ends: 157 [2022-10-16 11:25:07,980 INFO L226 Difference]: Without dead ends: 156 [2022-10-16 11:25:07,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=117, Invalid=434, Unknown=5, NotChecked=44, Total=600 [2022-10-16 11:25:07,983 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 103 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 66 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-16 11:25:07,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 302 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 214 Invalid, 0 Unknown, 66 Unchecked, 0.3s Time] [2022-10-16 11:25:07,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2022-10-16 11:25:08,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 114. [2022-10-16 11:25:08,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 98 states have (on average 1.2346938775510203) internal successors, (121), 104 states have internal predecessors, (121), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-10-16 11:25:08,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 131 transitions. [2022-10-16 11:25:08,006 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 131 transitions. Word has length 36 [2022-10-16 11:25:08,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:25:08,007 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 131 transitions. [2022-10-16 11:25:08,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 13 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 11:25:08,007 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 131 transitions. [2022-10-16 11:25:08,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-10-16 11:25:08,008 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:25:08,008 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:25:08,039 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-10-16 11:25:08,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-10-16 11:25:08,221 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-10-16 11:25:08,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:25:08,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1175348943, now seen corresponding path program 1 times [2022-10-16 11:25:08,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:25:08,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327561404] [2022-10-16 11:25:08,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:25:08,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:25:08,235 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:25:08,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [244015249] [2022-10-16 11:25:08,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:25:08,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:25:08,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:25:08,237 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:25:08,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-10-16 11:25:08,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:25:08,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 28 conjunts are in the unsatisfiable core [2022-10-16 11:25:08,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:25:08,323 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-10-16 11:25:08,341 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2022-10-16 11:25:08,344 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-10-16 11:25:08,390 INFO L356 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2022-10-16 11:25:08,390 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2022-10-16 11:25:08,394 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 25 [2022-10-16 11:25:08,541 INFO L356 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-10-16 11:25:08,541 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 28 [2022-10-16 11:25:17,681 WARN L233 SmtUtils]: Spent 7.10s on a formula simplification. DAG size of input: 32 DAG size of output: 21 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-10-16 11:25:17,758 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19 [2022-10-16 11:25:25,437 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2022-10-16 11:25:30,667 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-16 11:25:30,667 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:25:30,723 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_661 (Array Int Int))) (< (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array2~0#1.base| v_ArrVal_661) |c_ULTIMATE.start_main_~#array1~0#1.base|) |c_ULTIMATE.start_main_~#array1~0#1.offset|) |c_ULTIMATE.start_main_~sum~0#1|) 9223372036854775808)) is different from false [2022-10-16 11:25:30,746 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_660 Int) (v_ArrVal_661 (Array Int Int)) (|ULTIMATE.start_main_~index~0#1| Int)) (or (not (<= v_ArrVal_660 (* |c_ULTIMATE.start_main_~count~0#1| |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1|))) (< (+ |c_ULTIMATE.start_main_~sum~0#1| (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base|) (+ (* 4 |ULTIMATE.start_main_~index~0#1|) |c_ULTIMATE.start_main_~#array1~0#1.offset|) v_ArrVal_660)) |c_ULTIMATE.start_main_~#array2~0#1.base| v_ArrVal_661) |c_ULTIMATE.start_main_~#array1~0#1.base|) |c_ULTIMATE.start_main_~#array1~0#1.offset|)) 9223372036854775808))) is different from false [2022-10-16 11:25:30,770 WARN L833 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~num~0#1| Int) (|ULTIMATE.start_main_~count~0#1| Int)) (let ((.cse0 (* |ULTIMATE.start_main_~count~0#1| |ULTIMATE.start_main_~num~0#1| |ULTIMATE.start_main_~num~0#1|))) (or (not (<= .cse0 2147483647)) (forall ((v_ArrVal_660 Int) (v_ArrVal_661 (Array Int Int)) (|ULTIMATE.start_main_~index~0#1| Int)) (or (< (+ |c_ULTIMATE.start_main_~sum~0#1| (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base|) (+ (* 4 |ULTIMATE.start_main_~index~0#1|) |c_ULTIMATE.start_main_~#array1~0#1.offset|) v_ArrVal_660)) |c_ULTIMATE.start_main_~#array2~0#1.base| v_ArrVal_661) |c_ULTIMATE.start_main_~#array1~0#1.base|) |c_ULTIMATE.start_main_~#array1~0#1.offset|)) 9223372036854775808) (not (<= v_ArrVal_660 .cse0))))))) is different from false [2022-10-16 11:25:30,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:25:30,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327561404] [2022-10-16 11:25:30,834 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:25:30,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244015249] [2022-10-16 11:25:30,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [244015249] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:25:30,835 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-16 11:25:30,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2022-10-16 11:25:30,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060644599] [2022-10-16 11:25:30,835 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-16 11:25:30,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-16 11:25:30,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:25:30,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-16 11:25:30,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=116, Unknown=7, NotChecked=72, Total=240 [2022-10-16 11:25:30,837 INFO L87 Difference]: Start difference. First operand 114 states and 131 transitions. Second operand has 10 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 10 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 11:25:35,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:25:35,466 INFO L93 Difference]: Finished difference Result 139 states and 161 transitions. [2022-10-16 11:25:35,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-10-16 11:25:35,466 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 10 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 36 [2022-10-16 11:25:35,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:25:35,468 INFO L225 Difference]: With dead ends: 139 [2022-10-16 11:25:35,468 INFO L226 Difference]: Without dead ends: 138 [2022-10-16 11:25:35,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 32 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 26.6s TimeCoverageRelationStatistics Valid=62, Invalid=153, Unknown=7, NotChecked=84, Total=306 [2022-10-16 11:25:35,469 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 52 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 98 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 11:25:35,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 201 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 98 Unchecked, 0.1s Time] [2022-10-16 11:25:35,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2022-10-16 11:25:35,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 132. [2022-10-16 11:25:35,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 114 states have (on average 1.219298245614035) internal successors, (139), 120 states have internal predecessors, (139), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-10-16 11:25:35,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 151 transitions. [2022-10-16 11:25:35,492 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 151 transitions. Word has length 36 [2022-10-16 11:25:35,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:25:35,492 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 151 transitions. [2022-10-16 11:25:35,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 10 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 11:25:35,493 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 151 transitions. [2022-10-16 11:25:35,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-10-16 11:25:35,493 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:25:35,493 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:25:35,530 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-10-16 11:25:35,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:25:35,708 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-10-16 11:25:35,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:25:35,709 INFO L85 PathProgramCache]: Analyzing trace with hash 190771989, now seen corresponding path program 2 times [2022-10-16 11:25:35,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:25:35,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897275593] [2022-10-16 11:25:35,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:25:35,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:25:35,721 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:25:35,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [644427201] [2022-10-16 11:25:35,722 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 11:25:35,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:25:35,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:25:35,723 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:25:35,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-10-16 11:25:35,795 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 11:25:35,795 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 11:25:35,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 37 conjunts are in the unsatisfiable core [2022-10-16 11:25:35,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:25:35,803 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-10-16 11:25:35,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 11:25:35,822 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 18 [2022-10-16 11:25:35,826 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-10-16 11:25:35,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 11:25:35,896 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 33 [2022-10-16 11:25:36,305 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 25 [2022-10-16 11:25:38,248 INFO L356 Elim1Store]: treesize reduction 31, result has 18.4 percent of original size [2022-10-16 11:25:38,248 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 22 [2022-10-16 11:25:39,350 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-10-16 11:25:39,372 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:25:39,373 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:25:42,597 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_716 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_716) |c_ULTIMATE.start_main_~#array2~0#1.base|) |c_ULTIMATE.start_main_~#array2~0#1.offset|) 1))) is different from false [2022-10-16 11:25:42,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:25:42,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897275593] [2022-10-16 11:25:42,611 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:25:42,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644427201] [2022-10-16 11:25:42,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [644427201] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:25:42,612 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-16 11:25:42,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2022-10-16 11:25:42,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730043133] [2022-10-16 11:25:42,612 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-16 11:25:42,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-10-16 11:25:42,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:25:42,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-10-16 11:25:42,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=188, Unknown=5, NotChecked=28, Total=272 [2022-10-16 11:25:42,613 INFO L87 Difference]: Start difference. First operand 132 states and 151 transitions. Second operand has 12 states, 11 states have (on average 3.0) internal successors, (33), 12 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 11:25:44,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:25:44,437 INFO L93 Difference]: Finished difference Result 173 states and 192 transitions. [2022-10-16 11:25:44,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-10-16 11:25:44,438 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.0) internal successors, (33), 12 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 37 [2022-10-16 11:25:44,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:25:44,439 INFO L225 Difference]: With dead ends: 173 [2022-10-16 11:25:44,439 INFO L226 Difference]: Without dead ends: 172 [2022-10-16 11:25:44,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=93, Invalid=325, Unknown=6, NotChecked=38, Total=462 [2022-10-16 11:25:44,441 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 85 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 85 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-16 11:25:44,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 335 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 198 Invalid, 0 Unknown, 85 Unchecked, 0.2s Time] [2022-10-16 11:25:44,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2022-10-16 11:25:44,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 127. [2022-10-16 11:25:44,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 109 states have (on average 1.2293577981651376) internal successors, (134), 115 states have internal predecessors, (134), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-10-16 11:25:44,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 146 transitions. [2022-10-16 11:25:44,463 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 146 transitions. Word has length 37 [2022-10-16 11:25:44,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:25:44,463 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 146 transitions. [2022-10-16 11:25:44,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.0) internal successors, (33), 12 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 11:25:44,464 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 146 transitions. [2022-10-16 11:25:44,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-10-16 11:25:44,464 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:25:44,464 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:25:44,500 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-10-16 11:25:44,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:25:44,679 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-10-16 11:25:44,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:25:44,679 INFO L85 PathProgramCache]: Analyzing trace with hash 2076078967, now seen corresponding path program 1 times [2022-10-16 11:25:44,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:25:44,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64581468] [2022-10-16 11:25:44,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:25:44,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:25:44,692 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:25:44,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1938072485] [2022-10-16 11:25:44,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:25:44,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:25:44,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:25:44,693 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:25:44,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-10-16 11:25:44,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:25:44,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 28 conjunts are in the unsatisfiable core [2022-10-16 11:25:44,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:25:44,798 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-10-16 11:25:44,832 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2022-10-16 11:25:44,837 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-10-16 11:25:44,881 INFO L356 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2022-10-16 11:25:44,881 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2022-10-16 11:25:44,896 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 25 [2022-10-16 11:25:45,031 INFO L356 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-10-16 11:25:45,034 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 28 [2022-10-16 11:25:45,194 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19 [2022-10-16 11:25:45,313 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2022-10-16 11:25:45,371 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-16 11:25:45,371 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:25:45,430 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_771 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array2~0#1.base| v_ArrVal_771) |c_ULTIMATE.start_main_~#array1~0#1.base|) |c_ULTIMATE.start_main_~#array1~0#1.offset|) 9223372036854775809 |c_ULTIMATE.start_main_~sum~0#1|))) is different from false [2022-10-16 11:25:45,465 WARN L833 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~num~0#1| Int) (|ULTIMATE.start_main_~count~0#1| Int) (|ULTIMATE.start_main_~index~0#1| Int)) (let ((.cse0 (* |ULTIMATE.start_main_~count~0#1| |ULTIMATE.start_main_~num~0#1| |ULTIMATE.start_main_~num~0#1|))) (or (forall ((v_ArrVal_770 Int) (v_ArrVal_771 (Array Int Int))) (or (not (<= .cse0 v_ArrVal_770)) (< 0 (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base|) (+ (* 4 |ULTIMATE.start_main_~index~0#1|) |c_ULTIMATE.start_main_~#array1~0#1.offset|) v_ArrVal_770)) |c_ULTIMATE.start_main_~#array2~0#1.base| v_ArrVal_771) |c_ULTIMATE.start_main_~#array1~0#1.base|) |c_ULTIMATE.start_main_~#array1~0#1.offset|) 9223372036854775809 |c_ULTIMATE.start_main_~sum~0#1|)))) (not (<= 0 (+ .cse0 2147483648)))))) is different from false [2022-10-16 11:25:45,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:25:45,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64581468] [2022-10-16 11:25:45,562 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:25:45,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1938072485] [2022-10-16 11:25:45,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1938072485] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:25:45,562 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-16 11:25:45,562 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2022-10-16 11:25:45,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698520869] [2022-10-16 11:25:45,563 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-16 11:25:45,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-16 11:25:45,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:25:45,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-16 11:25:45,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=102, Unknown=2, NotChecked=42, Total=182 [2022-10-16 11:25:45,564 INFO L87 Difference]: Start difference. First operand 127 states and 146 transitions. Second operand has 9 states, 8 states have (on average 3.75) internal successors, (30), 9 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 11:25:45,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:25:45,690 INFO L93 Difference]: Finished difference Result 131 states and 151 transitions. [2022-10-16 11:25:45,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-16 11:25:45,690 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.75) internal successors, (30), 9 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 37 [2022-10-16 11:25:45,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:25:45,694 INFO L225 Difference]: With dead ends: 131 [2022-10-16 11:25:45,694 INFO L226 Difference]: Without dead ends: 130 [2022-10-16 11:25:45,695 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=116, Unknown=2, NotChecked=46, Total=210 [2022-10-16 11:25:45,695 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 35 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 114 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 11:25:45,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 243 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 114 Unchecked, 0.1s Time] [2022-10-16 11:25:45,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2022-10-16 11:25:45,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 128. [2022-10-16 11:25:45,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 110 states have (on average 1.2272727272727273) internal successors, (135), 116 states have internal predecessors, (135), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-10-16 11:25:45,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 147 transitions. [2022-10-16 11:25:45,718 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 147 transitions. Word has length 37 [2022-10-16 11:25:45,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:25:45,719 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 147 transitions. [2022-10-16 11:25:45,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.75) internal successors, (30), 9 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 11:25:45,719 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 147 transitions. [2022-10-16 11:25:45,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-10-16 11:25:45,721 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:25:45,721 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:25:45,747 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-10-16 11:25:45,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:25:45,931 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-10-16 11:25:45,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:25:45,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1729447734, now seen corresponding path program 1 times [2022-10-16 11:25:45,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:25:45,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866188499] [2022-10-16 11:25:45,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:25:45,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:25:45,943 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:25:45,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [546899064] [2022-10-16 11:25:45,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:25:45,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:25:45,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:25:45,944 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:25:45,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-10-16 11:25:46,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:25:46,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 39 conjunts are in the unsatisfiable core [2022-10-16 11:25:46,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:25:46,038 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-10-16 11:25:46,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 11:25:46,061 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 18 [2022-10-16 11:25:46,064 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-10-16 11:25:46,416 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-10-16 11:25:53,909 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-16 11:25:53,910 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 35 [2022-10-16 11:26:10,734 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-16 11:26:10,735 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 16 [2022-10-16 11:26:14,263 WARN L855 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~num~0#1| Int) (|v_ULTIMATE.start_main_~count~0#1_51| Int)) (let ((.cse0 (* |v_ULTIMATE.start_main_~count~0#1_51| |ULTIMATE.start_main_~num~0#1| |ULTIMATE.start_main_~num~0#1|))) (and (<= |c_ULTIMATE.start_main_~sum~0#1| .cse0) (<= .cse0 2147483647)))) is different from true [2022-10-16 11:26:14,293 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-10-16 11:26:14,294 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:26:15,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:26:15,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866188499] [2022-10-16 11:26:15,184 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:26:15,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [546899064] [2022-10-16 11:26:15,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [546899064] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:26:15,184 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-16 11:26:15,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2022-10-16 11:26:15,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314861006] [2022-10-16 11:26:15,186 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-16 11:26:15,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-10-16 11:26:15,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:26:15,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-10-16 11:26:15,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=596, Unknown=10, NotChecked=50, Total=756 [2022-10-16 11:26:15,188 INFO L87 Difference]: Start difference. First operand 128 states and 147 transitions. Second operand has 19 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 11:26:19,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:26:19,967 INFO L93 Difference]: Finished difference Result 146 states and 167 transitions. [2022-10-16 11:26:19,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-10-16 11:26:19,968 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 38 [2022-10-16 11:26:19,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:26:19,969 INFO L225 Difference]: With dead ends: 146 [2022-10-16 11:26:19,969 INFO L226 Difference]: Without dead ends: 145 [2022-10-16 11:26:19,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 33.0s TimeCoverageRelationStatistics Valid=125, Invalid=739, Unknown=10, NotChecked=56, Total=930 [2022-10-16 11:26:19,971 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 18 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 260 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-16 11:26:19,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 300 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 144 Invalid, 0 Unknown, 260 Unchecked, 0.2s Time] [2022-10-16 11:26:19,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2022-10-16 11:26:19,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 139. [2022-10-16 11:26:19,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 121 states have (on average 1.2148760330578512) internal successors, (147), 127 states have internal predecessors, (147), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-10-16 11:26:19,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 159 transitions. [2022-10-16 11:26:19,993 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 159 transitions. Word has length 38 [2022-10-16 11:26:19,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:26:19,994 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 159 transitions. [2022-10-16 11:26:19,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 11:26:19,994 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 159 transitions. [2022-10-16 11:26:19,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-10-16 11:26:19,995 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:26:19,995 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:26:20,024 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2022-10-16 11:26:20,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-10-16 11:26:20,210 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-10-16 11:26:20,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:26:20,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1729447689, now seen corresponding path program 1 times [2022-10-16 11:26:20,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:26:20,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686883143] [2022-10-16 11:26:20,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:26:20,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:26:20,221 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:26:20,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [925400308] [2022-10-16 11:26:20,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:26:20,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:26:20,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:26:20,223 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:26:20,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-10-16 11:26:20,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:26:20,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-16 11:26:20,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:26:20,409 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:26:20,410 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:26:20,502 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-16 11:26:20,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:26:20,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686883143] [2022-10-16 11:26:20,503 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:26:20,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [925400308] [2022-10-16 11:26:20,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [925400308] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 11:26:20,503 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-16 11:26:20,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2022-10-16 11:26:20,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47720656] [2022-10-16 11:26:20,504 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-16 11:26:20,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-10-16 11:26:20,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:26:20,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-10-16 11:26:20,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-10-16 11:26:20,505 INFO L87 Difference]: Start difference. First operand 139 states and 159 transitions. Second operand has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 12 states have internal predecessors, (44), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-10-16 11:26:20,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:26:20,715 INFO L93 Difference]: Finished difference Result 196 states and 214 transitions. [2022-10-16 11:26:20,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-10-16 11:26:20,717 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 12 states have internal predecessors, (44), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 38 [2022-10-16 11:26:20,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:26:20,718 INFO L225 Difference]: With dead ends: 196 [2022-10-16 11:26:20,718 INFO L226 Difference]: Without dead ends: 179 [2022-10-16 11:26:20,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 60 SyntacticMatches, 4 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2022-10-16 11:26:20,719 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 86 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 11:26:20,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 274 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 11:26:20,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2022-10-16 11:26:20,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 166. [2022-10-16 11:26:20,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 146 states have (on average 1.2123287671232876) internal successors, (177), 152 states have internal predecessors, (177), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-10-16 11:26:20,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 191 transitions. [2022-10-16 11:26:20,750 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 191 transitions. Word has length 38 [2022-10-16 11:26:20,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:26:20,750 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 191 transitions. [2022-10-16 11:26:20,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 12 states have internal predecessors, (44), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-10-16 11:26:20,751 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 191 transitions. [2022-10-16 11:26:20,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-10-16 11:26:20,751 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:26:20,752 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:26:20,779 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-10-16 11:26:20,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-10-16 11:26:20,965 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-10-16 11:26:20,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:26:20,965 INFO L85 PathProgramCache]: Analyzing trace with hash -66061359, now seen corresponding path program 1 times [2022-10-16 11:26:20,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:26:20,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226669674] [2022-10-16 11:26:20,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:26:20,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:26:20,986 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:26:20,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1230374139] [2022-10-16 11:26:20,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:26:20,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:26:20,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:26:20,988 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:26:20,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-10-16 11:26:21,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:26:21,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 42 conjunts are in the unsatisfiable core [2022-10-16 11:26:21,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:26:21,093 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-10-16 11:26:21,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 11:26:21,118 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 18 [2022-10-16 11:26:21,122 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-10-16 11:26:21,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 11:26:21,209 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 33 [2022-10-16 11:26:28,559 INFO L356 Elim1Store]: treesize reduction 112, result has 42.3 percent of original size [2022-10-16 11:26:28,560 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 52 treesize of output 112 [2022-10-16 11:26:37,042 INFO L356 Elim1Store]: treesize reduction 27, result has 32.5 percent of original size [2022-10-16 11:26:37,043 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 56 treesize of output 67 [2022-10-16 11:26:56,215 WARN L233 SmtUtils]: Spent 10.15s on a formula simplification. DAG size of input: 59 DAG size of output: 54 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-10-16 11:27:08,567 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-16 11:27:08,568 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 123 treesize of output 285