/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/array-fpi/eqn1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 19:48:53,419 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 19:48:53,422 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 19:48:53,459 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 19:48:53,459 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 19:48:53,462 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 19:48:53,464 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 19:48:53,467 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 19:48:53,469 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 19:48:53,473 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 19:48:53,475 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 19:48:53,476 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 19:48:53,477 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 19:48:53,479 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 19:48:53,480 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 19:48:53,481 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 19:48:53,482 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 19:48:53,483 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 19:48:53,485 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 19:48:53,489 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 19:48:53,490 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 19:48:53,492 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 19:48:53,493 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 19:48:53,494 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 19:48:53,501 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-01 19:48:53,502 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-01 19:48:53,502 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-01 19:48:53,503 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-01 19:48:53,504 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-01 19:48:53,504 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-01 19:48:53,505 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 19:48:53,505 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 19:48:53,506 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 19:48:53,507 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 19:48:53,508 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 19:48:53,508 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 19:48:53,508 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 19:48:53,508 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 19:48:53,509 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 19:48:53,509 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 19:48:53,510 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 19:48:53,511 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-04-01 19:48:53,538 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 19:48:53,539 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 19:48:53,539 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 19:48:53,539 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 19:48:53,541 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 19:48:53,541 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 19:48:53,541 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-01 19:48:53,541 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-01 19:48:53,542 INFO L138 SettingsManager]: * Use SBE=true [2023-04-01 19:48:53,542 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 19:48:53,542 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 19:48:53,543 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 19:48:53,543 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 19:48:53,543 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 19:48:53,543 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 19:48:53,543 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 19:48:53,543 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 19:48:53,544 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 19:48:53,544 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 19:48:53,544 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 19:48:53,544 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 19:48:53,544 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 19:48:53,544 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-01 19:48:53,544 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 19:48:53,545 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 19:48:53,545 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 19:48:53,545 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 19:48:53,545 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 19:48:53,545 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-01 19:48:53,545 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 19:48:53,546 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-01 19:48:53,546 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 19:48:53,546 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-01 19:48:53,546 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-01 19:48:53,546 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-01 19:48:53,547 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-01 19:48:53,782 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 19:48:53,800 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 19:48:53,802 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 19:48:53,803 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 19:48:53,803 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 19:48:53,804 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/eqn1.c [2023-04-01 19:48:54,944 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 19:48:55,122 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 19:48:55,122 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/eqn1.c [2023-04-01 19:48:55,126 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1963010fb/52afea82141949bb9ce6d8a6334cedbe/FLAG8ec65f518 [2023-04-01 19:48:55,138 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1963010fb/52afea82141949bb9ce6d8a6334cedbe [2023-04-01 19:48:55,140 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 19:48:55,142 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 19:48:55,143 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 19:48:55,143 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 19:48:55,149 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 19:48:55,150 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 07:48:55" (1/1) ... [2023-04-01 19:48:55,151 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fc26441 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 07:48:55, skipping insertion in model container [2023-04-01 19:48:55,151 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 07:48:55" (1/1) ... [2023-04-01 19:48:55,157 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 19:48:55,168 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 19:48:55,284 WARN L247 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-fpi/eqn1.c[587,600] [2023-04-01 19:48:55,316 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 19:48:55,327 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 19:48:55,343 WARN L247 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-fpi/eqn1.c[587,600] [2023-04-01 19:48:55,355 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 19:48:55,365 INFO L208 MainTranslator]: Completed translation [2023-04-01 19:48:55,366 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 07:48:55 WrapperNode [2023-04-01 19:48:55,366 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 19:48:55,366 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 19:48:55,367 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 19:48:55,367 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 19:48:55,374 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 07:48:55" (1/1) ... [2023-04-01 19:48:55,375 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 07:48:55" (1/1) ... [2023-04-01 19:48:55,380 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 07:48:55" (1/1) ... [2023-04-01 19:48:55,380 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 07:48:55" (1/1) ... [2023-04-01 19:48:55,387 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 07:48:55" (1/1) ... [2023-04-01 19:48:55,390 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 07:48:55" (1/1) ... [2023-04-01 19:48:55,391 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 07:48:55" (1/1) ... [2023-04-01 19:48:55,392 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 07:48:55" (1/1) ... [2023-04-01 19:48:55,395 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 19:48:55,396 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 19:48:55,396 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 19:48:55,397 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 19:48:55,397 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 07:48:55" (1/1) ... [2023-04-01 19:48:55,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 19:48:55,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 19:48:55,434 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) [2023-04-01 19:48:55,447 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 [2023-04-01 19:48:55,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 19:48:55,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 19:48:55,474 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 19:48:55,474 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-01 19:48:55,474 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-04-01 19:48:55,474 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 19:48:55,475 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 19:48:55,475 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 19:48:55,475 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 19:48:55,475 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 19:48:55,475 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-01 19:48:55,475 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-04-01 19:48:55,475 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 19:48:55,475 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-04-01 19:48:55,475 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 19:48:55,475 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-04-01 19:48:55,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 19:48:55,476 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 19:48:55,476 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 19:48:55,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 19:48:55,476 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 19:48:55,476 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 19:48:55,536 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 19:48:55,540 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 19:48:55,752 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 19:48:55,757 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 19:48:55,757 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-04-01 19:48:55,759 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 07:48:55 BoogieIcfgContainer [2023-04-01 19:48:55,759 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 19:48:55,761 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 19:48:55,761 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 19:48:55,764 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 19:48:55,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 07:48:55" (1/3) ... [2023-04-01 19:48:55,764 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b0daecd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 07:48:55, skipping insertion in model container [2023-04-01 19:48:55,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 07:48:55" (2/3) ... [2023-04-01 19:48:55,765 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b0daecd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 07:48:55, skipping insertion in model container [2023-04-01 19:48:55,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 07:48:55" (3/3) ... [2023-04-01 19:48:55,766 INFO L112 eAbstractionObserver]: Analyzing ICFG eqn1.c [2023-04-01 19:48:55,781 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 19:48:55,781 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 19:48:55,823 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 19:48:55,830 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=PETRI_NET, 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;@4a1df70, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-01 19:48:55,830 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 19:48:55,834 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 25 states have internal predecessors, (34), 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) [2023-04-01 19:48:55,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-04-01 19:48:55,843 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 19:48:55,844 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 19:48:55,845 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 19:48:55,851 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 19:48:55,851 INFO L85 PathProgramCache]: Analyzing trace with hash 199879945, now seen corresponding path program 1 times [2023-04-01 19:48:55,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 19:48:55,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23495939] [2023-04-01 19:48:55,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 19:48:55,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 19:48:55,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 19:48:56,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 19:48:56,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23495939] [2023-04-01 19:48:56,044 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-04-01 19:48:56,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307408593] [2023-04-01 19:48:56,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 19:48:56,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 19:48:56,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 19:48:56,049 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) [2023-04-01 19:48:56,090 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-01 19:48:56,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 19:48:56,184 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 1 conjunts are in the unsatisfiable core [2023-04-01 19:48:56,189 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 19:48:56,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 19:48:56,217 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 19:48:56,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [307408593] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 19:48:56,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 19:48:56,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-04-01 19:48:56,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597328364] [2023-04-01 19:48:56,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 19:48:56,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-04-01 19:48:56,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 19:48:56,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-04-01 19:48:56,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-01 19:48:56,261 INFO L87 Difference]: Start difference. First operand has 34 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 25 states have internal predecessors, (34), 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) Second operand has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-01 19:48:56,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 19:48:56,276 INFO L93 Difference]: Finished difference Result 58 states and 73 transitions. [2023-04-01 19:48:56,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-04-01 19:48:56,278 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2023-04-01 19:48:56,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 19:48:56,282 INFO L225 Difference]: With dead ends: 58 [2023-04-01 19:48:56,283 INFO L226 Difference]: Without dead ends: 29 [2023-04-01 19:48:56,285 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-01 19:48:56,288 INFO L413 NwaCegarLoop]: 37 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, 37 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 [2023-04-01 19:48:56,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 19:48:56,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-04-01 19:48:56,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2023-04-01 19:48:56,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 21 states have internal predecessors, (24), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 19:48:56,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2023-04-01 19:48:56,315 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 22 [2023-04-01 19:48:56,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 19:48:56,315 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2023-04-01 19:48:56,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-01 19:48:56,316 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2023-04-01 19:48:56,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-04-01 19:48:56,317 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 19:48:56,317 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 19:48:56,327 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-01 19:48:56,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-04-01 19:48:56,523 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 19:48:56,524 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 19:48:56,524 INFO L85 PathProgramCache]: Analyzing trace with hash -386926069, now seen corresponding path program 1 times [2023-04-01 19:48:56,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 19:48:56,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483737881] [2023-04-01 19:48:56,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 19:48:56,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 19:48:56,565 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-01 19:48:56,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2079881812] [2023-04-01 19:48:56,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 19:48:56,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 19:48:56,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 19:48:56,571 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) [2023-04-01 19:48:56,574 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-01 19:48:56,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 19:48:56,655 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 19 conjunts are in the unsatisfiable core [2023-04-01 19:48:56,658 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 19:48:56,771 INFO L321 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2023-04-01 19:48:56,772 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 74 [2023-04-01 19:48:56,782 INFO L350 Elim1Store]: Elim1 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 8 treesize of output 7 [2023-04-01 19:48:56,793 INFO L350 Elim1Store]: Elim1 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 8 treesize of output 7 [2023-04-01 19:48:56,860 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 5 [2023-04-01 19:48:56,864 INFO L350 Elim1Store]: Elim1 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 5 treesize of output 3 [2023-04-01 19:48:56,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 19:48:56,929 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 19:48:56,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 19:48:56,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483737881] [2023-04-01 19:48:56,929 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-01 19:48:56,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2079881812] [2023-04-01 19:48:56,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2079881812] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 19:48:56,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 19:48:56,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 19:48:56,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908844279] [2023-04-01 19:48:56,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 19:48:56,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 19:48:56,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 19:48:56,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 19:48:56,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-04-01 19:48:56,932 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand has 9 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-01 19:48:57,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 19:48:57,052 INFO L93 Difference]: Finished difference Result 47 states and 52 transitions. [2023-04-01 19:48:57,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-01 19:48:57,052 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2023-04-01 19:48:57,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 19:48:57,054 INFO L225 Difference]: With dead ends: 47 [2023-04-01 19:48:57,055 INFO L226 Difference]: Without dead ends: 45 [2023-04-01 19:48:57,055 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-04-01 19:48:57,056 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 15 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 19:48:57,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 137 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 19:48:57,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2023-04-01 19:48:57,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 39. [2023-04-01 19:48:57,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 30 states have internal predecessors, (34), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-04-01 19:48:57,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2023-04-01 19:48:57,067 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 22 [2023-04-01 19:48:57,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 19:48:57,067 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2023-04-01 19:48:57,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-01 19:48:57,068 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2023-04-01 19:48:57,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-04-01 19:48:57,069 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 19:48:57,069 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 19:48:57,079 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-01 19:48:57,275 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,SelfDestructingSolverStorable1 [2023-04-01 19:48:57,275 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 19:48:57,276 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 19:48:57,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1765590153, now seen corresponding path program 1 times [2023-04-01 19:48:57,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 19:48:57,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473353648] [2023-04-01 19:48:57,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 19:48:57,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 19:48:57,332 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-01 19:48:57,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [680973528] [2023-04-01 19:48:57,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 19:48:57,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 19:48:57,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 19:48:57,342 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) [2023-04-01 19:48:57,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-01 19:48:57,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 19:48:57,409 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 19:48:57,415 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 19:48:57,462 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 19:48:57,462 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 19:48:57,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 19:48:57,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473353648] [2023-04-01 19:48:57,463 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-01 19:48:57,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [680973528] [2023-04-01 19:48:57,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [680973528] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 19:48:57,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 19:48:57,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 19:48:57,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123199892] [2023-04-01 19:48:57,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 19:48:57,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 19:48:57,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 19:48:57,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 19:48:57,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-01 19:48:57,466 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-01 19:48:57,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 19:48:57,551 INFO L93 Difference]: Finished difference Result 71 states and 78 transitions. [2023-04-01 19:48:57,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-01 19:48:57,552 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24 [2023-04-01 19:48:57,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 19:48:57,556 INFO L225 Difference]: With dead ends: 71 [2023-04-01 19:48:57,556 INFO L226 Difference]: Without dead ends: 58 [2023-04-01 19:48:57,558 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-04-01 19:48:57,567 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 25 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 19:48:57,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 69 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 19:48:57,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2023-04-01 19:48:57,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 39. [2023-04-01 19:48:57,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 29 states have (on average 1.1379310344827587) internal successors, (33), 30 states have internal predecessors, (33), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-04-01 19:48:57,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2023-04-01 19:48:57,581 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 24 [2023-04-01 19:48:57,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 19:48:57,581 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2023-04-01 19:48:57,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-01 19:48:57,581 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2023-04-01 19:48:57,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-04-01 19:48:57,582 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 19:48:57,582 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 19:48:57,589 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-04-01 19:48:57,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 19:48:57,783 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 19:48:57,783 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 19:48:57,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1858974921, now seen corresponding path program 1 times [2023-04-01 19:48:57,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 19:48:57,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980791111] [2023-04-01 19:48:57,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 19:48:57,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 19:48:57,828 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-01 19:48:57,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [373164836] [2023-04-01 19:48:57,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 19:48:57,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 19:48:57,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 19:48:57,832 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) [2023-04-01 19:48:57,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-04-01 19:48:57,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 19:48:57,899 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 19:48:57,901 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 19:48:57,950 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 19:48:57,950 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 19:48:57,986 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 19:48:57,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 19:48:57,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980791111] [2023-04-01 19:48:57,987 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-01 19:48:57,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [373164836] [2023-04-01 19:48:57,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [373164836] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 19:48:57,987 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-01 19:48:57,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2023-04-01 19:48:57,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432489949] [2023-04-01 19:48:57,988 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-01 19:48:57,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-01 19:48:57,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 19:48:57,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-01 19:48:57,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 19:48:57,990 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-01 19:48:58,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 19:48:58,097 INFO L93 Difference]: Finished difference Result 66 states and 71 transitions. [2023-04-01 19:48:58,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-01 19:48:58,098 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24 [2023-04-01 19:48:58,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 19:48:58,101 INFO L225 Difference]: With dead ends: 66 [2023-04-01 19:48:58,101 INFO L226 Difference]: Without dead ends: 55 [2023-04-01 19:48:58,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2023-04-01 19:48:58,105 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 29 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 19:48:58,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 88 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 19:48:58,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2023-04-01 19:48:58,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 40. [2023-04-01 19:48:58,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 30 states have (on average 1.1333333333333333) internal successors, (34), 31 states have internal predecessors, (34), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-04-01 19:48:58,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2023-04-01 19:48:58,121 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 24 [2023-04-01 19:48:58,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 19:48:58,121 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2023-04-01 19:48:58,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-01 19:48:58,122 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2023-04-01 19:48:58,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-04-01 19:48:58,122 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 19:48:58,122 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 19:48:58,128 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-04-01 19:48:58,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 19:48:58,328 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 19:48:58,329 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 19:48:58,329 INFO L85 PathProgramCache]: Analyzing trace with hash -292108345, now seen corresponding path program 1 times [2023-04-01 19:48:58,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 19:48:58,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573663434] [2023-04-01 19:48:58,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 19:48:58,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 19:48:58,350 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-01 19:48:58,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [761767208] [2023-04-01 19:48:58,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 19:48:58,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 19:48:58,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 19:48:58,357 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) [2023-04-01 19:48:58,358 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-04-01 19:48:58,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 19:48:58,440 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 32 conjunts are in the unsatisfiable core [2023-04-01 19:48:58,444 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 19:48:58,476 INFO L350 Elim1Store]: Elim1 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 [2023-04-01 19:48:58,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:48:58,491 INFO L350 Elim1Store]: Elim1 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 14 [2023-04-01 19:48:58,494 INFO L350 Elim1Store]: Elim1 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 8 treesize of output 7 [2023-04-01 19:48:58,515 INFO L350 Elim1Store]: Elim1 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 [2023-04-01 19:48:58,558 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-04-01 19:48:58,612 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 19:48:58,612 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 19:48:58,821 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_137 (Array Int Int))) (= 1 (select (select (store |c_#memory_int| c_main_~a~0.base v_ArrVal_137) c_main_~b~0.base) c_main_~b~0.offset))) is different from false [2023-04-01 19:48:58,856 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-04-01 19:48:58,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 19:48:58,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573663434] [2023-04-01 19:48:58,856 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-01 19:48:58,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [761767208] [2023-04-01 19:48:58,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [761767208] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 19:48:58,856 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-01 19:48:58,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 17 [2023-04-01 19:48:58,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575343175] [2023-04-01 19:48:58,857 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-01 19:48:58,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-04-01 19:48:58,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 19:48:58,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-04-01 19:48:58,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=203, Unknown=1, NotChecked=28, Total=272 [2023-04-01 19:48:58,858 INFO L87 Difference]: Start difference. First operand 40 states and 43 transitions. Second operand has 17 states, 15 states have (on average 2.066666666666667) internal successors, (31), 15 states have internal predecessors, (31), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 19:48:59,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 19:48:59,189 INFO L93 Difference]: Finished difference Result 72 states and 81 transitions. [2023-04-01 19:48:59,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-01 19:48:59,190 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 2.066666666666667) internal successors, (31), 15 states have internal predecessors, (31), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 26 [2023-04-01 19:48:59,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 19:48:59,191 INFO L225 Difference]: With dead ends: 72 [2023-04-01 19:48:59,191 INFO L226 Difference]: Without dead ends: 70 [2023-04-01 19:48:59,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=86, Invalid=423, Unknown=1, NotChecked=42, Total=552 [2023-04-01 19:48:59,192 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 57 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 25 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 53 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 19:48:59,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 199 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 197 Invalid, 4 Unknown, 53 Unchecked, 0.2s Time] [2023-04-01 19:48:59,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2023-04-01 19:48:59,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 44. [2023-04-01 19:48:59,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 34 states have (on average 1.1764705882352942) internal successors, (40), 35 states have internal predecessors, (40), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-04-01 19:48:59,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 49 transitions. [2023-04-01 19:48:59,199 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 49 transitions. Word has length 26 [2023-04-01 19:48:59,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 19:48:59,200 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 49 transitions. [2023-04-01 19:48:59,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 2.066666666666667) internal successors, (31), 15 states have internal predecessors, (31), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 19:48:59,200 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 49 transitions. [2023-04-01 19:48:59,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-04-01 19:48:59,200 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 19:48:59,201 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] [2023-04-01 19:48:59,207 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-04-01 19:48:59,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 19:48:59,407 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 19:48:59,408 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 19:48:59,408 INFO L85 PathProgramCache]: Analyzing trace with hash -781361951, now seen corresponding path program 1 times [2023-04-01 19:48:59,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 19:48:59,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587533600] [2023-04-01 19:48:59,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 19:48:59,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 19:48:59,422 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-01 19:48:59,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [10906757] [2023-04-01 19:48:59,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 19:48:59,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 19:48:59,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 19:48:59,424 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) [2023-04-01 19:48:59,446 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-04-01 19:48:59,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 19:48:59,491 INFO L262 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 5 conjunts are in the unsatisfiable core [2023-04-01 19:48:59,493 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 19:48:59,536 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 19:48:59,536 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 19:48:59,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 19:48:59,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587533600] [2023-04-01 19:48:59,536 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-01 19:48:59,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [10906757] [2023-04-01 19:48:59,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [10906757] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 19:48:59,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 19:48:59,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 19:48:59,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091569829] [2023-04-01 19:48:59,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 19:48:59,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-01 19:48:59,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 19:48:59,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-01 19:48:59,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-04-01 19:48:59,538 INFO L87 Difference]: Start difference. First operand 44 states and 49 transitions. Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-04-01 19:48:59,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 19:48:59,614 INFO L93 Difference]: Finished difference Result 69 states and 75 transitions. [2023-04-01 19:48:59,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-01 19:48:59,615 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 30 [2023-04-01 19:48:59,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 19:48:59,616 INFO L225 Difference]: With dead ends: 69 [2023-04-01 19:48:59,616 INFO L226 Difference]: Without dead ends: 47 [2023-04-01 19:48:59,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-04-01 19:48:59,617 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 12 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 19:48:59,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 65 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 19:48:59,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2023-04-01 19:48:59,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 42. [2023-04-01 19:48:59,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 32 states have (on average 1.15625) internal successors, (37), 33 states have internal predecessors, (37), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-04-01 19:48:59,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2023-04-01 19:48:59,623 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 30 [2023-04-01 19:48:59,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 19:48:59,623 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2023-04-01 19:48:59,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-04-01 19:48:59,624 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2023-04-01 19:48:59,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-04-01 19:48:59,624 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 19:48:59,624 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 19:48:59,633 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-04-01 19:48:59,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 19:48:59,830 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 19:48:59,831 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 19:48:59,831 INFO L85 PathProgramCache]: Analyzing trace with hash 525498179, now seen corresponding path program 2 times [2023-04-01 19:48:59,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 19:48:59,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047206155] [2023-04-01 19:48:59,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 19:48:59,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 19:48:59,857 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-01 19:48:59,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [580038113] [2023-04-01 19:48:59,857 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-04-01 19:48:59,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 19:48:59,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 19:48:59,858 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) [2023-04-01 19:48:59,875 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-04-01 19:48:59,934 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-04-01 19:48:59,935 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-01 19:48:59,936 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 7 conjunts are in the unsatisfiable core [2023-04-01 19:48:59,937 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 19:48:59,998 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 19:48:59,998 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 19:49:00,061 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 19:49:00,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 19:49:00,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047206155] [2023-04-01 19:49:00,062 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-01 19:49:00,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [580038113] [2023-04-01 19:49:00,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [580038113] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 19:49:00,062 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-01 19:49:00,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2023-04-01 19:49:00,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383733532] [2023-04-01 19:49:00,062 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-01 19:49:00,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-01 19:49:00,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 19:49:00,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-01 19:49:00,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2023-04-01 19:49:00,063 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand has 13 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-01 19:49:00,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 19:49:00,340 INFO L93 Difference]: Finished difference Result 126 states and 140 transitions. [2023-04-01 19:49:00,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-04-01 19:49:00,340 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 30 [2023-04-01 19:49:00,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 19:49:00,341 INFO L225 Difference]: With dead ends: 126 [2023-04-01 19:49:00,341 INFO L226 Difference]: Without dead ends: 99 [2023-04-01 19:49:00,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=180, Invalid=420, Unknown=0, NotChecked=0, Total=600 [2023-04-01 19:49:00,342 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 82 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 19:49:00,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 130 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 19:49:00,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2023-04-01 19:49:00,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 69. [2023-04-01 19:49:00,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 56 states have (on average 1.1428571428571428) internal successors, (64), 57 states have internal predecessors, (64), 7 states have call successors, (7), 7 states have call predecessors, (7), 5 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2023-04-01 19:49:00,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 76 transitions. [2023-04-01 19:49:00,358 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 76 transitions. Word has length 30 [2023-04-01 19:49:00,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 19:49:00,358 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 76 transitions. [2023-04-01 19:49:00,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-01 19:49:00,359 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 76 transitions. [2023-04-01 19:49:00,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-04-01 19:49:00,360 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 19:49:00,360 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] [2023-04-01 19:49:00,367 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-04-01 19:49:00,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 19:49:00,561 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 19:49:00,561 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 19:49:00,561 INFO L85 PathProgramCache]: Analyzing trace with hash -2143768931, now seen corresponding path program 1 times [2023-04-01 19:49:00,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 19:49:00,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826256441] [2023-04-01 19:49:00,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 19:49:00,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 19:49:00,582 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-01 19:49:00,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1263731292] [2023-04-01 19:49:00,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 19:49:00,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 19:49:00,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 19:49:00,588 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) [2023-04-01 19:49:00,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-04-01 19:49:00,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 19:49:00,706 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 44 conjunts are in the unsatisfiable core [2023-04-01 19:49:00,714 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 19:49:00,744 INFO L321 Elim1Store]: treesize reduction 13, result has 58.1 percent of original size [2023-04-01 19:49:00,745 INFO L350 Elim1Store]: Elim1 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 54 [2023-04-01 19:49:00,766 INFO L321 Elim1Store]: treesize reduction 35, result has 34.0 percent of original size [2023-04-01 19:49:00,767 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 71 [2023-04-01 19:49:00,775 INFO L350 Elim1Store]: Elim1 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 8 treesize of output 7 [2023-04-01 19:49:00,800 INFO L350 Elim1Store]: Elim1 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 16 treesize of output 5 [2023-04-01 19:49:00,818 INFO L350 Elim1Store]: Elim1 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 8 treesize of output 7 [2023-04-01 19:49:00,827 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 46 [2023-04-01 19:49:00,836 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 11 [2023-04-01 19:49:00,873 INFO L350 Elim1Store]: Elim1 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 [2023-04-01 19:49:00,905 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-04-01 19:49:00,905 INFO L350 Elim1Store]: Elim1 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 1 case distinctions, treesize of input 26 treesize of output 28 [2023-04-01 19:49:00,955 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-04-01 19:49:00,955 INFO L350 Elim1Store]: Elim1 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 1 case distinctions, treesize of input 26 treesize of output 28 [2023-04-01 19:49:01,230 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 19:49:01,230 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 19:49:01,791 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 19:49:01,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 19:49:01,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826256441] [2023-04-01 19:49:01,792 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-01 19:49:01,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1263731292] [2023-04-01 19:49:01,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1263731292] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 19:49:01,792 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-01 19:49:01,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 22 [2023-04-01 19:49:01,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906245885] [2023-04-01 19:49:01,792 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-01 19:49:01,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-04-01 19:49:01,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 19:49:01,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-04-01 19:49:01,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=397, Unknown=0, NotChecked=0, Total=462 [2023-04-01 19:49:01,794 INFO L87 Difference]: Start difference. First operand 69 states and 76 transitions. Second operand has 22 states, 20 states have (on average 2.2) internal successors, (44), 19 states have internal predecessors, (44), 5 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-04-01 19:49:02,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 19:49:02,915 INFO L93 Difference]: Finished difference Result 115 states and 123 transitions. [2023-04-01 19:49:02,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-04-01 19:49:02,915 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 2.2) internal successors, (44), 19 states have internal predecessors, (44), 5 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 34 [2023-04-01 19:49:02,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 19:49:02,916 INFO L225 Difference]: With dead ends: 115 [2023-04-01 19:49:02,916 INFO L226 Difference]: Without dead ends: 96 [2023-04-01 19:49:02,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=200, Invalid=922, Unknown=0, NotChecked=0, Total=1122 [2023-04-01 19:49:02,917 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 84 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-01 19:49:02,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 284 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-01 19:49:02,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2023-04-01 19:49:02,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 74. [2023-04-01 19:49:02,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 59 states have (on average 1.1016949152542372) internal successors, (65), 60 states have internal predecessors, (65), 8 states have call successors, (8), 8 states have call predecessors, (8), 6 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2023-04-01 19:49:02,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 79 transitions. [2023-04-01 19:49:02,952 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 79 transitions. Word has length 34 [2023-04-01 19:49:02,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 19:49:02,952 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 79 transitions. [2023-04-01 19:49:02,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 2.2) internal successors, (44), 19 states have internal predecessors, (44), 5 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-04-01 19:49:02,952 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 79 transitions. [2023-04-01 19:49:02,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-04-01 19:49:02,953 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 19:49:02,953 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 19:49:02,963 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-04-01 19:49:03,163 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,SelfDestructingSolverStorable7 [2023-04-01 19:49:03,164 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 19:49:03,164 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 19:49:03,164 INFO L85 PathProgramCache]: Analyzing trace with hash 2094692671, now seen corresponding path program 3 times [2023-04-01 19:49:03,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 19:49:03,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264709249] [2023-04-01 19:49:03,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 19:49:03,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 19:49:03,201 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-01 19:49:03,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [565267894] [2023-04-01 19:49:03,201 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-04-01 19:49:03,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 19:49:03,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 19:49:03,202 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) [2023-04-01 19:49:03,205 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-04-01 19:49:03,554 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-04-01 19:49:03,554 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-01 19:49:03,556 INFO L262 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 58 conjunts are in the unsatisfiable core [2023-04-01 19:49:03,559 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 19:49:03,654 INFO L321 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2023-04-01 19:49:03,654 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 74 [2023-04-01 19:49:03,662 INFO L350 Elim1Store]: Elim1 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 8 treesize of output 7 [2023-04-01 19:49:03,669 INFO L350 Elim1Store]: Elim1 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 8 treesize of output 7 [2023-04-01 19:49:03,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 19:49:03,695 INFO L350 Elim1Store]: Elim1 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 38 treesize of output 11 [2023-04-01 19:49:03,704 INFO L350 Elim1Store]: Elim1 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 [2023-04-01 19:49:03,739 INFO L350 Elim1Store]: Elim1 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 [2023-04-01 19:49:03,798 INFO L350 Elim1Store]: Elim1 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 [2023-04-01 19:49:03,856 INFO L350 Elim1Store]: Elim1 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 [2023-04-01 19:49:03,991 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-04-01 19:49:04,034 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-04-01 19:49:04,068 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 46 [2023-04-01 19:49:04,089 INFO L321 Elim1Store]: treesize reduction 23, result has 4.2 percent of original size [2023-04-01 19:49:04,090 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 85 [2023-04-01 19:49:04,131 INFO L321 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2023-04-01 19:49:04,131 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 64 treesize of output 28 [2023-04-01 19:49:04,355 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 19:49:04,355 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 19:49:06,333 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse1 (select |c_#memory_int| c_main_~b~0.base))) (and (forall ((v_z_3 Int) (v_y_3 Int) (v_ArrVal_300 Int)) (let ((.cse0 (* v_y_3 4294967296))) (or (< (+ v_z_3 .cse0 1) c_~N~0) (<= c_~N~0 (+ v_z_3 .cse0)) (<= v_z_3 2147483647) (= (select (store .cse1 (+ (* v_z_3 8) (- 34359738368) c_main_~b~0.offset) v_ArrVal_300) c_main_~b~0.offset) 1) (<= 4294967296 v_z_3)))) (forall ((v_z_5 Int) (v_ArrVal_300 Int) (v_y_5 Int)) (let ((.cse2 (* v_y_5 4294967296))) (or (< (+ v_z_5 .cse2 1) c_~N~0) (= 1 (select (store .cse1 (+ (* v_z_5 8) c_main_~b~0.offset) v_ArrVal_300) c_main_~b~0.offset)) (<= c_~N~0 (+ v_z_5 .cse2)) (< 2147483647 v_z_5) (< v_z_5 0)))))) is different from false [2023-04-01 19:49:08,553 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse9 (mod c_main_~i~0 4294967296))) (let ((.cse10 (* .cse9 8))) (let ((.cse4 (< 2147483647 .cse9)) (.cse6 (+ .cse10 c_main_~b~0.offset)) (.cse0 (select |c_#memory_int| c_main_~b~0.base)) (.cse1 (+ .cse10 (- 34359738368) c_main_~b~0.offset)) (.cse3 (<= .cse9 2147483647))) (and (or (forall ((v_z_3 Int) (v_y_3 Int) (v_ArrVal_300 Int) (v_ArrVal_298 Int)) (let ((.cse2 (* v_y_3 4294967296))) (or (= (select (store (store .cse0 .cse1 v_ArrVal_298) (+ (* v_z_3 8) (- 34359738368) c_main_~b~0.offset) v_ArrVal_300) c_main_~b~0.offset) 1) (< (+ v_z_3 .cse2 1) c_~N~0) (<= c_~N~0 (+ v_z_3 .cse2)) (<= v_z_3 2147483647) (<= 4294967296 v_z_3)))) .cse3) (or .cse4 (forall ((v_z_5 Int) (v_ArrVal_300 Int) (v_y_5 Int) (v_ArrVal_298 Int)) (let ((.cse5 (* v_y_5 4294967296))) (or (< (+ v_z_5 .cse5 1) c_~N~0) (<= c_~N~0 (+ v_z_5 .cse5)) (< 2147483647 v_z_5) (= (select (store (store .cse0 .cse6 v_ArrVal_298) (+ (* v_z_5 8) c_main_~b~0.offset) v_ArrVal_300) c_main_~b~0.offset) 1) (< v_z_5 0))))) (or .cse4 (forall ((v_z_3 Int) (v_y_3 Int) (v_ArrVal_300 Int) (v_ArrVal_298 Int)) (let ((.cse7 (* v_y_3 4294967296))) (or (< (+ v_z_3 .cse7 1) c_~N~0) (<= c_~N~0 (+ v_z_3 .cse7)) (= (select (store (store .cse0 .cse6 v_ArrVal_298) (+ (* v_z_3 8) (- 34359738368) c_main_~b~0.offset) v_ArrVal_300) c_main_~b~0.offset) 1) (<= v_z_3 2147483647) (<= 4294967296 v_z_3))))) (or (forall ((v_z_5 Int) (v_ArrVal_300 Int) (v_y_5 Int) (v_ArrVal_298 Int)) (let ((.cse8 (* v_y_5 4294967296))) (or (< (+ v_z_5 .cse8 1) c_~N~0) (<= c_~N~0 (+ v_z_5 .cse8)) (= (select (store (store .cse0 .cse1 v_ArrVal_298) (+ (* v_z_5 8) c_main_~b~0.offset) v_ArrVal_300) c_main_~b~0.offset) 1) (< 2147483647 v_z_5) (< v_z_5 0)))) .cse3))))) is different from false [2023-04-01 19:49:09,589 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse10 (mod (+ c_main_~i~0 1) 4294967296))) (let ((.cse9 (* .cse10 8))) (let ((.cse4 (< 2147483647 .cse10)) (.cse6 (+ .cse9 c_main_~b~0.offset)) (.cse0 (<= .cse10 2147483647)) (.cse2 (select |c_#memory_int| c_main_~b~0.base)) (.cse3 (+ .cse9 (- 34359738368) c_main_~b~0.offset))) (and (or .cse0 (forall ((v_z_5 Int) (v_ArrVal_300 Int) (v_y_5 Int) (v_ArrVal_298 Int)) (let ((.cse1 (* v_y_5 4294967296))) (or (< (+ v_z_5 .cse1 1) c_~N~0) (= (select (store (store .cse2 .cse3 v_ArrVal_298) (+ (* v_z_5 8) c_main_~b~0.offset) v_ArrVal_300) c_main_~b~0.offset) 1) (<= c_~N~0 (+ v_z_5 .cse1)) (< 2147483647 v_z_5) (< v_z_5 0))))) (or .cse4 (forall ((v_z_5 Int) (v_ArrVal_300 Int) (v_y_5 Int) (v_ArrVal_298 Int)) (let ((.cse5 (* v_y_5 4294967296))) (or (< (+ v_z_5 .cse5 1) c_~N~0) (<= c_~N~0 (+ v_z_5 .cse5)) (< 2147483647 v_z_5) (= 1 (select (store (store .cse2 .cse6 v_ArrVal_298) (+ (* v_z_5 8) c_main_~b~0.offset) v_ArrVal_300) c_main_~b~0.offset)) (< v_z_5 0))))) (or .cse4 (forall ((v_z_3 Int) (v_y_3 Int) (v_ArrVal_300 Int) (v_ArrVal_298 Int)) (let ((.cse7 (* v_y_3 4294967296))) (or (< (+ v_z_3 .cse7 1) c_~N~0) (<= c_~N~0 (+ v_z_3 .cse7)) (<= v_z_3 2147483647) (= (select (store (store .cse2 .cse6 v_ArrVal_298) (+ (* v_z_3 8) (- 34359738368) c_main_~b~0.offset) v_ArrVal_300) c_main_~b~0.offset) 1) (<= 4294967296 v_z_3))))) (or .cse0 (forall ((v_z_3 Int) (v_y_3 Int) (v_ArrVal_300 Int) (v_ArrVal_298 Int)) (let ((.cse8 (* v_y_3 4294967296))) (or (= (select (store (store .cse2 .cse3 v_ArrVal_298) (+ (* v_z_3 8) (- 34359738368) c_main_~b~0.offset) v_ArrVal_300) c_main_~b~0.offset) 1) (< (+ v_z_3 .cse8 1) c_~N~0) (<= c_~N~0 (+ v_z_3 .cse8)) (<= v_z_3 2147483647) (<= 4294967296 v_z_3))))))))) is different from false [2023-04-01 19:49:42,805 WARN L223 SmtUtils]: Spent 30.63s on a formula simplification. DAG size of input: 115 DAG size of output: 59 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-04-01 19:49:50,663 WARN L223 SmtUtils]: Spent 5.73s on a formula simplification that was a NOOP. DAG size: 54 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-04-01 19:50:03,782 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-01 19:50:03,788 INFO L350 Elim1Store]: Elim1 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 89 treesize of output 85 [2023-04-01 19:50:03,795 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-01 19:50:03,800 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-01 19:50:03,817 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 8 not checked. [2023-04-01 19:50:03,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 19:50:03,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264709249] [2023-04-01 19:50:03,817 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-01 19:50:03,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [565267894] [2023-04-01 19:50:03,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [565267894] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 19:50:03,818 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-01 19:50:03,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 19] total 39 [2023-04-01 19:50:03,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613674025] [2023-04-01 19:50:03,818 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-01 19:50:03,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-04-01 19:50:03,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 19:50:03,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-04-01 19:50:03,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=1039, Unknown=5, NotChecked=210, Total=1482 [2023-04-01 19:50:03,820 INFO L87 Difference]: Start difference. First operand 74 states and 79 transitions. Second operand has 39 states, 37 states have (on average 1.4324324324324325) internal successors, (53), 36 states have internal predecessors, (53), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-04-01 19:50:19,691 WARN L223 SmtUtils]: Spent 15.76s on a formula simplification. DAG size of input: 88 DAG size of output: 82 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-04-01 19:50:22,357 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-04-01 19:50:30,819 WARN L223 SmtUtils]: Spent 6.39s on a formula simplification. DAG size of input: 103 DAG size of output: 95 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-04-01 19:50:41,760 WARN L223 SmtUtils]: Spent 9.26s on a formula simplification. DAG size of input: 114 DAG size of output: 92 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-04-01 19:50:54,679 WARN L223 SmtUtils]: Spent 12.76s on a formula simplification. DAG size of input: 93 DAG size of output: 79 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-04-01 19:51:07,527 WARN L223 SmtUtils]: Spent 10.24s on a formula simplification. DAG size of input: 91 DAG size of output: 77 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-04-01 19:51:21,427 WARN L223 SmtUtils]: Spent 13.64s on a formula simplification. DAG size of input: 114 DAG size of output: 93 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-04-01 19:51:30,721 WARN L223 SmtUtils]: Spent 9.15s on a formula simplification. DAG size of input: 92 DAG size of output: 42 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-04-01 19:52:01,363 WARN L223 SmtUtils]: Spent 17.51s on a formula simplification. DAG size of input: 116 DAG size of output: 57 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-04-01 19:52:30,862 WARN L223 SmtUtils]: Spent 29.31s on a formula simplification. DAG size of input: 112 DAG size of output: 100 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-04-01 19:52:41,264 WARN L223 SmtUtils]: Spent 8.95s on a formula simplification. DAG size of input: 126 DAG size of output: 35 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-04-01 19:52:43,282 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-04-01 19:52:45,207 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-04-01 19:52:47,230 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse13 (mod c_main_~i~0 4294967296))) (let ((.cse14 (* .cse13 8))) (let ((.cse4 (< 2147483647 .cse13)) (.cse6 (+ .cse14 c_main_~b~0.offset)) (.cse1 (+ .cse14 (- 34359738368) c_main_~b~0.offset)) (.cse3 (<= .cse13 2147483647)) (.cse0 (select |c_#memory_int| c_main_~b~0.base))) (and (or (forall ((v_z_3 Int) (v_y_3 Int) (v_ArrVal_300 Int) (v_ArrVal_298 Int)) (let ((.cse2 (* v_y_3 4294967296))) (or (= (select (store (store .cse0 .cse1 v_ArrVal_298) (+ (* v_z_3 8) (- 34359738368) c_main_~b~0.offset) v_ArrVal_300) c_main_~b~0.offset) 1) (< (+ v_z_3 .cse2 1) c_~N~0) (<= c_~N~0 (+ v_z_3 .cse2)) (<= v_z_3 2147483647) (<= 4294967296 v_z_3)))) .cse3) (<= (mod c_~N~0 4294967296) 536870911) (or .cse4 (forall ((v_z_5 Int) (v_ArrVal_300 Int) (v_y_5 Int) (v_ArrVal_298 Int)) (let ((.cse5 (* v_y_5 4294967296))) (or (< (+ v_z_5 .cse5 1) c_~N~0) (<= c_~N~0 (+ v_z_5 .cse5)) (< 2147483647 v_z_5) (= (select (store (store .cse0 .cse6 v_ArrVal_298) (+ (* v_z_5 8) c_main_~b~0.offset) v_ArrVal_300) c_main_~b~0.offset) 1) (< v_z_5 0))))) (or .cse4 (forall ((v_z_3 Int) (v_y_3 Int) (v_ArrVal_300 Int) (v_ArrVal_298 Int)) (let ((.cse7 (* v_y_3 4294967296))) (or (< (+ v_z_3 .cse7 1) c_~N~0) (<= c_~N~0 (+ v_z_3 .cse7)) (= (select (store (store .cse0 .cse6 v_ArrVal_298) (+ (* v_z_3 8) (- 34359738368) c_main_~b~0.offset) v_ArrVal_300) c_main_~b~0.offset) 1) (<= v_z_3 2147483647) (<= 4294967296 v_z_3))))) (<= c_~N~0 2147483647) (or (<= c_~N~0 1) (let ((.cse9 (+ 8 c_main_~b~0.offset)) (.cse10 (+ 16 c_main_~b~0.offset))) (and (forall ((v_z_3 Int) (v_y_3 Int) (v_ArrVal_300 Int) (v_ArrVal_298 Int) (v_ArrVal_297 Int)) (let ((.cse8 (* v_y_3 4294967296))) (or (< (+ v_z_3 .cse8 1) c_~N~0) (<= c_~N~0 (+ v_z_3 .cse8)) (<= v_z_3 2147483647) (= (select (store (store (store .cse0 .cse9 v_ArrVal_297) .cse10 v_ArrVal_298) (+ (* v_z_3 8) (- 34359738368) c_main_~b~0.offset) v_ArrVal_300) c_main_~b~0.offset) 1) (<= 4294967296 v_z_3)))) (forall ((v_z_5 Int) (v_ArrVal_300 Int) (v_y_5 Int) (v_ArrVal_298 Int) (v_ArrVal_297 Int)) (let ((.cse11 (* v_y_5 4294967296))) (or (< (+ v_z_5 .cse11 1) c_~N~0) (<= c_~N~0 (+ v_z_5 .cse11)) (< 2147483647 v_z_5) (= (select (store (store (store .cse0 .cse9 v_ArrVal_297) .cse10 v_ArrVal_298) (+ (* v_z_5 8) c_main_~b~0.offset) v_ArrVal_300) c_main_~b~0.offset) 1) (< v_z_5 0))))))) (or (forall ((v_z_5 Int) (v_ArrVal_300 Int) (v_y_5 Int) (v_ArrVal_298 Int)) (let ((.cse12 (* v_y_5 4294967296))) (or (< (+ v_z_5 .cse12 1) c_~N~0) (<= c_~N~0 (+ v_z_5 .cse12)) (= (select (store (store .cse0 .cse1 v_ArrVal_298) (+ (* v_z_5 8) c_main_~b~0.offset) v_ArrVal_300) c_main_~b~0.offset) 1) (< 2147483647 v_z_5) (< v_z_5 0)))) .cse3) (or (= (select .cse0 c_main_~b~0.offset) 1) (< (+ c_main_~i~0 1) c_~N~0)) (< 0 c_~N~0))))) is different from false [2023-04-01 19:52:56,430 WARN L223 SmtUtils]: Spent 7.41s on a formula simplification. DAG size of input: 83 DAG size of output: 59 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-04-01 19:53:03,638 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1]