/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/bresenham-ll_valuebound100.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-34549b5 [2022-04-06 01:02:23,843 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-06 01:02:23,845 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-06 01:02:23,882 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-06 01:02:23,882 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-06 01:02:23,883 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-06 01:02:23,884 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-06 01:02:23,894 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-06 01:02:23,898 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-06 01:02:23,903 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-06 01:02:23,904 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-06 01:02:23,904 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-06 01:02:23,904 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-06 01:02:23,905 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-06 01:02:23,906 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-06 01:02:23,906 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-06 01:02:23,907 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-06 01:02:23,907 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-06 01:02:23,909 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-06 01:02:23,910 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-06 01:02:23,911 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-06 01:02:23,915 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-06 01:02:23,920 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-06 01:02:23,922 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-06 01:02:23,924 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-06 01:02:23,931 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-06 01:02:23,932 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-06 01:02:23,932 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-06 01:02:23,933 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-06 01:02:23,933 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-06 01:02:23,933 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-06 01:02:23,934 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-06 01:02:23,934 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-06 01:02:23,935 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-06 01:02:23,939 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-06 01:02:23,941 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-06 01:02:23,941 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-06 01:02:23,941 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-06 01:02:23,941 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-06 01:02:23,942 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-06 01:02:23,942 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-06 01:02:23,944 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-06 01:02:23,945 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 [2022-04-06 01:02:23,967 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-06 01:02:23,968 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-06 01:02:23,968 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-04-06 01:02:23,968 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-04-06 01:02:23,968 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-06 01:02:23,969 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-06 01:02:23,969 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-04-06 01:02:23,969 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-04-06 01:02:23,969 INFO L138 SettingsManager]: * Use SBE=true [2022-04-06 01:02:23,969 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-06 01:02:23,970 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-06 01:02:23,970 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-06 01:02:23,970 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-06 01:02:23,970 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-06 01:02:23,970 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-06 01:02:23,970 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-06 01:02:23,970 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-06 01:02:23,970 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-06 01:02:23,970 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-06 01:02:23,970 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-06 01:02:23,970 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-06 01:02:23,971 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-06 01:02:23,971 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-06 01:02:23,971 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-06 01:02:23,971 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-06 01:02:23,971 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-06 01:02:23,971 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-06 01:02:23,971 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-06 01:02:23,971 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-06 01:02:23,971 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-06 01:02:23,972 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-04-06 01:02:23,972 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-04-06 01:02:23,972 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-06 01:02:23,972 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-06 01:02:24,145 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-06 01:02:24,163 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-06 01:02:24,165 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-06 01:02:24,166 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-06 01:02:24,167 INFO L275 PluginConnector]: CDTParser initialized [2022-04-06 01:02:24,168 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/bresenham-ll_valuebound100.c [2022-04-06 01:02:24,216 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/083debfcb/0a003090d8a0402d98446a754ea16904/FLAG9ebe10458 [2022-04-06 01:02:24,552 INFO L306 CDTParser]: Found 1 translation units. [2022-04-06 01:02:24,552 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/bresenham-ll_valuebound100.c [2022-04-06 01:02:24,560 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/083debfcb/0a003090d8a0402d98446a754ea16904/FLAG9ebe10458 [2022-04-06 01:02:24,945 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/083debfcb/0a003090d8a0402d98446a754ea16904 [2022-04-06 01:02:24,947 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-06 01:02:24,948 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-04-06 01:02:24,949 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-06 01:02:24,949 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-06 01:02:24,951 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-06 01:02:24,952 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 01:02:24" (1/1) ... [2022-04-06 01:02:24,952 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d60d7e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 01:02:24, skipping insertion in model container [2022-04-06 01:02:24,953 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 01:02:24" (1/1) ... [2022-04-06 01:02:24,957 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-06 01:02:24,966 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-06 01:02:25,073 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/bresenham-ll_valuebound100.c[597,610] [2022-04-06 01:02:25,087 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-06 01:02:25,092 INFO L203 MainTranslator]: Completed pre-run [2022-04-06 01:02:25,123 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/bresenham-ll_valuebound100.c[597,610] [2022-04-06 01:02:25,134 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-06 01:02:25,142 INFO L208 MainTranslator]: Completed translation [2022-04-06 01:02:25,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 01:02:25 WrapperNode [2022-04-06 01:02:25,143 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-06 01:02:25,143 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-06 01:02:25,144 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-06 01:02:25,144 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-06 01:02:25,152 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 01:02:25" (1/1) ... [2022-04-06 01:02:25,152 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 01:02:25" (1/1) ... [2022-04-06 01:02:25,156 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 01:02:25" (1/1) ... [2022-04-06 01:02:25,156 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 01:02:25" (1/1) ... [2022-04-06 01:02:25,159 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 01:02:25" (1/1) ... [2022-04-06 01:02:25,162 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 01:02:25" (1/1) ... [2022-04-06 01:02:25,163 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 01:02:25" (1/1) ... [2022-04-06 01:02:25,164 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-06 01:02:25,165 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-06 01:02:25,165 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-06 01:02:25,165 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-06 01:02:25,166 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 01:02:25" (1/1) ... [2022-04-06 01:02:25,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-06 01:02:25,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 01:02:25,198 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-04-06 01:02:25,203 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-04-06 01:02:25,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-06 01:02:25,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-06 01:02:25,222 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-06 01:02:25,223 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-06 01:02:25,223 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-06 01:02:25,224 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-06 01:02:25,224 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-06 01:02:25,224 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-06 01:02:25,224 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-06 01:02:25,224 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-06 01:02:25,225 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-06 01:02:25,225 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-06 01:02:25,225 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-06 01:02:25,225 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-06 01:02:25,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-06 01:02:25,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-06 01:02:25,231 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-06 01:02:25,231 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-06 01:02:25,231 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-06 01:02:25,231 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-06 01:02:25,274 INFO L234 CfgBuilder]: Building ICFG [2022-04-06 01:02:25,275 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-06 01:02:25,376 INFO L275 CfgBuilder]: Performing block encoding [2022-04-06 01:02:25,380 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-06 01:02:25,380 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-06 01:02:25,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 01:02:25 BoogieIcfgContainer [2022-04-06 01:02:25,382 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-06 01:02:25,383 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-06 01:02:25,383 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-06 01:02:25,397 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-06 01:02:25,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.04 01:02:24" (1/3) ... [2022-04-06 01:02:25,398 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@403d2030 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 01:02:25, skipping insertion in model container [2022-04-06 01:02:25,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 01:02:25" (2/3) ... [2022-04-06 01:02:25,398 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@403d2030 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 01:02:25, skipping insertion in model container [2022-04-06 01:02:25,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 01:02:25" (3/3) ... [2022-04-06 01:02:25,399 INFO L111 eAbstractionObserver]: Analyzing ICFG bresenham-ll_valuebound100.c [2022-04-06 01:02:25,402 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-06 01:02:25,403 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-06 01:02:25,437 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-06 01:02:25,442 INFO L340 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 [2022-04-06 01:02:25,442 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-06 01:02:25,456 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 20 states have (on average 1.35) internal successors, (27), 21 states have internal predecessors, (27), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-04-06 01:02:25,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-04-06 01:02:25,460 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 01:02:25,460 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 01:02:25,461 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 01:02:25,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 01:02:25,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1867489771, now seen corresponding path program 1 times [2022-04-06 01:02:25,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 01:02:25,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646026115] [2022-04-06 01:02:25,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 01:02:25,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 01:02:25,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 01:02:25,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 01:02:25,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 01:02:25,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 01:02:25,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 01:02:25,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 01:02:25,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 01:02:25,696 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-06 01:02:25,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 01:02:25,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646026115] [2022-04-06 01:02:25,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646026115] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 01:02:25,698 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 01:02:25,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-06 01:02:25,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400893182] [2022-04-06 01:02:25,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 01:02:25,703 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-06 01:02:25,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 01:02:25,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-06 01:02:25,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-06 01:02:25,729 INFO L87 Difference]: Start difference. First operand has 32 states, 20 states have (on average 1.35) internal successors, (27), 21 states have internal predecessors, (27), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 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) [2022-04-06 01:02:25,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 01:02:25,785 INFO L93 Difference]: Finished difference Result 57 states and 74 transitions. [2022-04-06 01:02:25,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-06 01:02:25,787 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 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 23 [2022-04-06 01:02:25,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 01:02:25,794 INFO L225 Difference]: With dead ends: 57 [2022-04-06 01:02:25,794 INFO L226 Difference]: Without dead ends: 27 [2022-04-06 01:02:25,797 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-06 01:02:25,802 INFO L913 BasicCegarLoop]: 31 mSDtfsCounter, 20 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 01:02:25,803 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 34 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 01:02:25,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-04-06 01:02:25,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-04-06 01:02:25,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 18 states have internal predecessors, (20), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-06 01:02:25,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2022-04-06 01:02:25,838 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 23 [2022-04-06 01:02:25,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 01:02:25,839 INFO L478 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2022-04-06 01:02:25,839 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 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) [2022-04-06 01:02:25,839 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2022-04-06 01:02:25,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-04-06 01:02:25,841 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 01:02:25,841 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 01:02:25,842 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-06 01:02:25,843 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 01:02:25,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 01:02:25,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1827672217, now seen corresponding path program 1 times [2022-04-06 01:02:25,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 01:02:25,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275341612] [2022-04-06 01:02:25,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 01:02:25,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 01:02:25,873 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 01:02:25,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1232678952] [2022-04-06 01:02:25,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 01:02:25,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 01:02:25,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 01:02:25,875 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 01:02:25,876 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-06 01:02:25,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 01:02:25,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 13 conjunts are in the unsatisfiable core [2022-04-06 01:02:25,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 01:02:26,076 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-06 01:02:26,076 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 01:02:26,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 01:02:26,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275341612] [2022-04-06 01:02:26,077 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 01:02:26,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1232678952] [2022-04-06 01:02:26,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1232678952] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 01:02:26,077 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 01:02:26,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-06 01:02:26,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940496320] [2022-04-06 01:02:26,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 01:02:26,078 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-06 01:02:26,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 01:02:26,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-06 01:02:26,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-04-06 01:02:26,080 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-04-06 01:02:26,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 01:02:26,145 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2022-04-06 01:02:26,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-06 01:02:26,146 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 23 [2022-04-06 01:02:26,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 01:02:26,147 INFO L225 Difference]: With dead ends: 39 [2022-04-06 01:02:26,147 INFO L226 Difference]: Without dead ends: 35 [2022-04-06 01:02:26,147 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-04-06 01:02:26,148 INFO L913 BasicCegarLoop]: 22 mSDtfsCounter, 10 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 01:02:26,149 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 91 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 01:02:26,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-04-06 01:02:26,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2022-04-06 01:02:26,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 23 states have internal predecessors, (25), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-06 01:02:26,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2022-04-06 01:02:26,157 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 23 [2022-04-06 01:02:26,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 01:02:26,158 INFO L478 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2022-04-06 01:02:26,159 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-04-06 01:02:26,159 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2022-04-06 01:02:26,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-04-06 01:02:26,159 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 01:02:26,160 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 01:02:26,178 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-04-06 01:02:26,378 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 01:02:26,378 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 01:02:26,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 01:02:26,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1419291471, now seen corresponding path program 1 times [2022-04-06 01:02:26,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 01:02:26,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863822564] [2022-04-06 01:02:26,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 01:02:26,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 01:02:26,389 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 01:02:26,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1880632715] [2022-04-06 01:02:26,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 01:02:26,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 01:02:26,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 01:02:26,391 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 01:02:26,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-04-06 01:02:26,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 01:02:26,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 17 conjunts are in the unsatisfiable core [2022-04-06 01:02:26,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 01:02:26,568 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-06 01:02:26,568 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 01:02:26,699 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-04-06 01:02:26,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 01:02:26,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863822564] [2022-04-06 01:02:26,700 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 01:02:26,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1880632715] [2022-04-06 01:02:26,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1880632715] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 01:02:26,701 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-06 01:02:26,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2022-04-06 01:02:26,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023538036] [2022-04-06 01:02:26,701 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-06 01:02:26,702 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-04-06 01:02:26,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 01:02:26,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-04-06 01:02:26,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-04-06 01:02:26,704 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand has 11 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 10 states have internal predecessors, (25), 5 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-04-06 01:02:26,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 01:02:26,943 INFO L93 Difference]: Finished difference Result 48 states and 54 transitions. [2022-04-06 01:02:26,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-06 01:02:26,943 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 10 states have internal predecessors, (25), 5 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 32 [2022-04-06 01:02:26,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 01:02:26,944 INFO L225 Difference]: With dead ends: 48 [2022-04-06 01:02:26,944 INFO L226 Difference]: Without dead ends: 42 [2022-04-06 01:02:26,945 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 52 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2022-04-06 01:02:26,945 INFO L913 BasicCegarLoop]: 22 mSDtfsCounter, 14 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-06 01:02:26,946 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 123 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-06 01:02:26,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-04-06 01:02:26,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2022-04-06 01:02:26,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 28 states have internal predecessors, (31), 8 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-04-06 01:02:26,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2022-04-06 01:02:26,952 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 32 [2022-04-06 01:02:26,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 01:02:26,953 INFO L478 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2022-04-06 01:02:26,953 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 10 states have internal predecessors, (25), 5 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-04-06 01:02:26,953 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2022-04-06 01:02:26,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-04-06 01:02:26,954 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 01:02:26,954 INFO L499 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 01:02:26,985 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-04-06 01:02:27,171 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-04-06 01:02:27,171 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 01:02:27,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 01:02:27,172 INFO L85 PathProgramCache]: Analyzing trace with hash 125050924, now seen corresponding path program 1 times [2022-04-06 01:02:27,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 01:02:27,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891279351] [2022-04-06 01:02:27,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 01:02:27,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 01:02:27,184 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 01:02:27,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1774195294] [2022-04-06 01:02:27,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 01:02:27,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 01:02:27,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 01:02:27,200 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 01:02:27,274 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-04-06 01:02:27,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 01:02:27,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 26 conjunts are in the unsatisfiable core [2022-04-06 01:02:27,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 01:02:27,593 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-04-06 01:02:27,593 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 01:02:28,004 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-04-06 01:02:28,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 01:02:28,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891279351] [2022-04-06 01:02:28,004 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 01:02:28,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1774195294] [2022-04-06 01:02:28,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1774195294] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 01:02:28,005 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-06 01:02:28,005 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 22 [2022-04-06 01:02:28,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011875980] [2022-04-06 01:02:28,005 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-06 01:02:28,005 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-04-06 01:02:28,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 01:02:28,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-04-06 01:02:28,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2022-04-06 01:02:28,006 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand has 22 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 19 states have internal predecessors, (34), 6 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-04-06 01:02:28,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 01:02:28,513 INFO L93 Difference]: Finished difference Result 60 states and 68 transitions. [2022-04-06 01:02:28,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-04-06 01:02:28,514 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 19 states have internal predecessors, (34), 6 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 39 [2022-04-06 01:02:28,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 01:02:28,515 INFO L225 Difference]: With dead ends: 60 [2022-04-06 01:02:28,515 INFO L226 Difference]: Without dead ends: 52 [2022-04-06 01:02:28,516 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=208, Invalid=1052, Unknown=0, NotChecked=0, Total=1260 [2022-04-06 01:02:28,516 INFO L913 BasicCegarLoop]: 20 mSDtfsCounter, 30 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 72 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-06 01:02:28,517 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 233 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 315 Invalid, 0 Unknown, 72 Unchecked, 0.2s Time] [2022-04-06 01:02:28,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-04-06 01:02:28,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 41. [2022-04-06 01:02:28,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 28 states have internal predecessors, (31), 8 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-04-06 01:02:28,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2022-04-06 01:02:28,525 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 39 [2022-04-06 01:02:28,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 01:02:28,525 INFO L478 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2022-04-06 01:02:28,526 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 19 states have internal predecessors, (34), 6 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-04-06 01:02:28,526 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2022-04-06 01:02:28,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-04-06 01:02:28,526 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 01:02:28,527 INFO L499 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 01:02:28,571 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-04-06 01:02:28,771 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 01:02:28,771 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 01:02:28,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 01:02:28,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1662296326, now seen corresponding path program 1 times [2022-04-06 01:02:28,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 01:02:28,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584651022] [2022-04-06 01:02:28,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 01:02:28,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 01:02:28,787 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 01:02:28,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1292309317] [2022-04-06 01:02:28,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 01:02:28,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 01:02:28,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 01:02:28,789 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 01:02:28,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-04-06 01:02:28,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 01:02:28,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 23 conjunts are in the unsatisfiable core [2022-04-06 01:02:28,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 01:02:28,935 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-04-06 01:02:28,942 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-04-06 01:02:32,586 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-04-06 01:02:32,586 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 01:02:32,783 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-04-06 01:02:32,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 01:02:32,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584651022] [2022-04-06 01:02:32,784 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 01:02:32,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1292309317] [2022-04-06 01:02:32,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1292309317] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 01:02:32,784 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-06 01:02:32,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2022-04-06 01:02:32,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025044462] [2022-04-06 01:02:32,785 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-06 01:02:32,787 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-04-06 01:02:32,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 01:02:32,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-04-06 01:02:32,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=146, Unknown=1, NotChecked=0, Total=182 [2022-04-06 01:02:32,787 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand has 14 states, 10 states have (on average 2.9) internal successors, (29), 13 states have internal predecessors, (29), 6 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-04-06 01:02:34,809 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-06 01:02:38,883 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-06 01:02:40,889 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-06 01:02:42,893 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-06 01:02:44,934 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-06 01:02:46,949 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-06 01:02:49,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 01:02:49,070 INFO L93 Difference]: Finished difference Result 56 states and 63 transitions. [2022-04-06 01:02:49,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-06 01:02:49,071 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 10 states have (on average 2.9) internal successors, (29), 13 states have internal predecessors, (29), 6 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 48 [2022-04-06 01:02:49,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 01:02:49,072 INFO L225 Difference]: With dead ends: 56 [2022-04-06 01:02:49,072 INFO L226 Difference]: Without dead ends: 50 [2022-04-06 01:02:49,072 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 81 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=66, Invalid=237, Unknown=3, NotChecked=0, Total=306 [2022-04-06 01:02:49,072 INFO L913 BasicCegarLoop]: 19 mSDtfsCounter, 28 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 19 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2022-04-06 01:02:49,073 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 121 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 124 Invalid, 6 Unknown, 0 Unchecked, 12.1s Time] [2022-04-06 01:02:49,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-04-06 01:02:49,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 44. [2022-04-06 01:02:49,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 30 states have (on average 1.1) internal successors, (33), 31 states have internal predecessors, (33), 9 states have call successors, (9), 6 states have call predecessors, (9), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-04-06 01:02:49,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 49 transitions. [2022-04-06 01:02:49,079 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 49 transitions. Word has length 48 [2022-04-06 01:02:49,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 01:02:49,080 INFO L478 AbstractCegarLoop]: Abstraction has 44 states and 49 transitions. [2022-04-06 01:02:49,080 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 10 states have (on average 2.9) internal successors, (29), 13 states have internal predecessors, (29), 6 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-04-06 01:02:49,080 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 49 transitions. [2022-04-06 01:02:49,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-04-06 01:02:49,081 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 01:02:49,081 INFO L499 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 01:02:49,098 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-04-06 01:02:49,293 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 01:02:49,293 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 01:02:49,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 01:02:49,294 INFO L85 PathProgramCache]: Analyzing trace with hash -143142008, now seen corresponding path program 1 times [2022-04-06 01:02:49,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 01:02:49,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448665531] [2022-04-06 01:02:49,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 01:02:49,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 01:02:49,305 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 01:02:49,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1655137893] [2022-04-06 01:02:49,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 01:02:49,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 01:02:49,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 01:02:49,308 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 01:02:49,309 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-04-06 01:02:49,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 01:02:49,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 9 conjunts are in the unsatisfiable core [2022-04-06 01:02:49,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 01:02:49,486 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-04-06 01:02:49,486 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 01:02:49,634 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-04-06 01:02:49,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 01:02:49,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448665531] [2022-04-06 01:02:49,635 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 01:02:49,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1655137893] [2022-04-06 01:02:49,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1655137893] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 01:02:49,635 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-06 01:02:49,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-04-06 01:02:49,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800993509] [2022-04-06 01:02:49,635 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-06 01:02:49,635 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-06 01:02:49,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 01:02:49,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-06 01:02:49,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-04-06 01:02:49,636 INFO L87 Difference]: Start difference. First operand 44 states and 49 transitions. Second operand has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 8 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2022-04-06 01:02:49,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 01:02:49,806 INFO L93 Difference]: Finished difference Result 65 states and 75 transitions. [2022-04-06 01:02:49,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-06 01:02:49,806 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 8 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) Word has length 48 [2022-04-06 01:02:49,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 01:02:49,807 INFO L225 Difference]: With dead ends: 65 [2022-04-06 01:02:49,807 INFO L226 Difference]: Without dead ends: 59 [2022-04-06 01:02:49,807 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2022-04-06 01:02:49,808 INFO L913 BasicCegarLoop]: 31 mSDtfsCounter, 5 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 01:02:49,808 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 154 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 01:02:49,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-04-06 01:02:49,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 51. [2022-04-06 01:02:49,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 36 states have (on average 1.1388888888888888) internal successors, (41), 36 states have internal predecessors, (41), 10 states have call successors, (10), 6 states have call predecessors, (10), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-04-06 01:02:49,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 59 transitions. [2022-04-06 01:02:49,822 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 59 transitions. Word has length 48 [2022-04-06 01:02:49,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 01:02:49,822 INFO L478 AbstractCegarLoop]: Abstraction has 51 states and 59 transitions. [2022-04-06 01:02:49,822 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 8 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2022-04-06 01:02:49,824 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 59 transitions. [2022-04-06 01:02:49,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-04-06 01:02:49,825 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 01:02:49,825 INFO L499 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 01:02:49,857 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-04-06 01:02:50,043 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 01:02:50,043 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 01:02:50,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 01:02:50,044 INFO L85 PathProgramCache]: Analyzing trace with hash 55892592, now seen corresponding path program 2 times [2022-04-06 01:02:50,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 01:02:50,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234599142] [2022-04-06 01:02:50,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 01:02:50,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 01:02:50,064 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 01:02:50,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [682754391] [2022-04-06 01:02:50,064 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 01:02:50,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 01:02:50,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 01:02:50,073 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 01:02:50,076 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-04-06 01:02:50,118 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-06 01:02:50,118 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 01:02:50,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 9 conjunts are in the unsatisfiable core [2022-04-06 01:02:50,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 01:02:50,346 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 8 proven. 24 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-04-06 01:02:50,346 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 01:02:50,514 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 8 proven. 24 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-04-06 01:02:50,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 01:02:50,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234599142] [2022-04-06 01:02:50,515 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 01:02:50,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [682754391] [2022-04-06 01:02:50,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [682754391] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 01:02:50,515 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-06 01:02:50,515 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-04-06 01:02:50,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450916060] [2022-04-06 01:02:50,515 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-06 01:02:50,515 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-04-06 01:02:50,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 01:02:50,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-04-06 01:02:50,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2022-04-06 01:02:50,516 INFO L87 Difference]: Start difference. First operand 51 states and 59 transitions. Second operand has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 10 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 9 states have call predecessors, (11), 9 states have call successors, (11) [2022-04-06 01:02:50,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 01:02:50,706 INFO L93 Difference]: Finished difference Result 78 states and 93 transitions. [2022-04-06 01:02:50,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-06 01:02:50,706 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 10 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 9 states have call predecessors, (11), 9 states have call successors, (11) Word has length 57 [2022-04-06 01:02:50,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 01:02:50,707 INFO L225 Difference]: With dead ends: 78 [2022-04-06 01:02:50,707 INFO L226 Difference]: Without dead ends: 72 [2022-04-06 01:02:50,707 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2022-04-06 01:02:50,708 INFO L913 BasicCegarLoop]: 32 mSDtfsCounter, 8 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 01:02:50,708 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 230 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 01:02:50,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-04-06 01:02:50,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 56. [2022-04-06 01:02:50,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 40 states have (on average 1.15) internal successors, (46), 40 states have internal predecessors, (46), 11 states have call successors, (11), 6 states have call predecessors, (11), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-04-06 01:02:50,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 66 transitions. [2022-04-06 01:02:50,717 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 66 transitions. Word has length 57 [2022-04-06 01:02:50,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 01:02:50,717 INFO L478 AbstractCegarLoop]: Abstraction has 56 states and 66 transitions. [2022-04-06 01:02:50,717 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 10 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 9 states have call predecessors, (11), 9 states have call successors, (11) [2022-04-06 01:02:50,718 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 66 transitions. [2022-04-06 01:02:50,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-04-06 01:02:50,718 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 01:02:50,718 INFO L499 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 01:02:50,736 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-04-06 01:02:50,931 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 01:02:50,932 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 01:02:50,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 01:02:50,932 INFO L85 PathProgramCache]: Analyzing trace with hash 2136090540, now seen corresponding path program 3 times [2022-04-06 01:02:50,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 01:02:50,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970910154] [2022-04-06 01:02:50,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 01:02:50,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 01:02:50,939 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 01:02:50,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [46955843] [2022-04-06 01:02:50,939 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-06 01:02:50,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 01:02:50,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 01:02:50,943 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 01:02:50,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-04-06 01:02:51,252 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-04-06 01:02:51,252 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 01:02:51,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 31 conjunts are in the unsatisfiable core [2022-04-06 01:02:51,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 01:02:52,680 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-04-06 01:02:52,684 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-04-06 01:02:52,686 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-04-06 01:03:23,234 WARN L232 SmtUtils]: Spent 14.81s on a formula simplification that was a NOOP. DAG size: 56 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-04-06 01:03:28,144 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 29 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-04-06 01:03:28,145 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 01:03:30,807 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-04-06 01:03:34,465 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-04-06 01:03:52,578 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 29 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-04-06 01:03:52,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 01:03:52,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970910154] [2022-04-06 01:03:52,579 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 01:03:52,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [46955843] [2022-04-06 01:03:52,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [46955843] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 01:03:52,579 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-06 01:03:52,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13] total 25 [2022-04-06 01:03:52,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088563320] [2022-04-06 01:03:52,579 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-06 01:03:52,579 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-04-06 01:03:52,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 01:03:52,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-04-06 01:03:52,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=494, Unknown=8, NotChecked=0, Total=600 [2022-04-06 01:03:52,580 INFO L87 Difference]: Start difference. First operand 56 states and 66 transitions. Second operand has 25 states, 21 states have (on average 2.1904761904761907) internal successors, (46), 22 states have internal predecessors, (46), 7 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2022-04-06 01:04:14,688 WARN L232 SmtUtils]: Spent 10.06s on a formula simplification. DAG size of input: 65 DAG size of output: 61 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-04-06 01:04:17,210 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-06 01:04:19,394 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-06 01:04:20,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 01:04:20,502 INFO L93 Difference]: Finished difference Result 62 states and 74 transitions. [2022-04-06 01:04:20,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-04-06 01:04:20,502 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 21 states have (on average 2.1904761904761907) internal successors, (46), 22 states have internal predecessors, (46), 7 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) Word has length 57 [2022-04-06 01:04:20,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 01:04:20,502 INFO L225 Difference]: With dead ends: 62 [2022-04-06 01:04:20,502 INFO L226 Difference]: Without dead ends: 0 [2022-04-06 01:04:20,503 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 89 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 62.9s TimeCoverageRelationStatistics Valid=236, Invalid=1086, Unknown=10, NotChecked=0, Total=1332 [2022-04-06 01:04:20,503 INFO L913 BasicCegarLoop]: 16 mSDtfsCounter, 25 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 18 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 59 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-04-06 01:04:20,504 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 169 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 292 Invalid, 1 Unknown, 59 Unchecked, 6.4s Time] [2022-04-06 01:04:20,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-04-06 01:04:20,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-04-06 01:04:20,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-06 01:04:20,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-04-06 01:04:20,504 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 57 [2022-04-06 01:04:20,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 01:04:20,504 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-04-06 01:04:20,505 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 21 states have (on average 2.1904761904761907) internal successors, (46), 22 states have internal predecessors, (46), 7 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2022-04-06 01:04:20,505 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-06 01:04:20,505 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-06 01:04:20,506 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-06 01:04:20,519 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-04-06 01:04:20,713 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 01:04:20,715 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-04-06 01:04:40,992 WARN L232 SmtUtils]: Spent 20.24s on a formula simplification. DAG size of input: 114 DAG size of output: 38 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-04-06 01:04:48,075 WARN L232 SmtUtils]: Spent 7.07s on a formula simplification. DAG size of input: 134 DAG size of output: 45 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-04-06 01:04:48,284 INFO L882 garLoopResultBuilder]: For program point reach_errorEXIT(line 7) no Hoare annotation was computed. [2022-04-06 01:04:48,284 INFO L882 garLoopResultBuilder]: For program point reach_errorENTRY(line 7) no Hoare annotation was computed. [2022-04-06 01:04:48,284 INFO L882 garLoopResultBuilder]: For program point reach_errorFINAL(line 7) no Hoare annotation was computed. [2022-04-06 01:04:48,284 INFO L885 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 10 12) the Hoare annotation is: true [2022-04-06 01:04:48,284 INFO L882 garLoopResultBuilder]: For program point L11(line 11) no Hoare annotation was computed. [2022-04-06 01:04:48,284 INFO L882 garLoopResultBuilder]: For program point L11-2(lines 10 12) no Hoare annotation was computed. [2022-04-06 01:04:48,284 INFO L882 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 10 12) no Hoare annotation was computed. [2022-04-06 01:04:48,284 INFO L878 garLoopResultBuilder]: At program point L27(line 27) the Hoare annotation is: (and (<= main_~X~0 100) (<= 0 main_~X~0)) [2022-04-06 01:04:48,284 INFO L882 garLoopResultBuilder]: For program point L27-1(line 27) no Hoare annotation was computed. [2022-04-06 01:04:48,284 INFO L885 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: true [2022-04-06 01:04:48,284 INFO L882 garLoopResultBuilder]: For program point mainEXIT(lines 21 53) no Hoare annotation was computed. [2022-04-06 01:04:48,284 INFO L882 garLoopResultBuilder]: For program point L25-1(line 25) no Hoare annotation was computed. [2022-04-06 01:04:48,285 INFO L878 garLoopResultBuilder]: At program point L50(line 50) the Hoare annotation is: (let ((.cse2 (* main_~y~0 2)) (.cse0 (* main_~Y~0 2)) (.cse1 (* 2 (* main_~Y~0 main_~x~0)))) (and (= (+ .cse0 .cse1) (+ (* (* main_~X~0 main_~y~0) 2) main_~X~0 main_~v~0)) (= (+ .cse2 .cse0 (* 2 main_~yx~0)) (+ (* 2 main_~xy~0) main_~X~0 main_~v~0)) (= (+ (* 2 (* main_~y~0 main_~x~0)) main_~X~0 main_~v~0) (+ .cse2 .cse0 .cse1)))) [2022-04-06 01:04:48,285 INFO L882 garLoopResultBuilder]: For program point L50-1(line 50) no Hoare annotation was computed. [2022-04-06 01:04:48,285 INFO L882 garLoopResultBuilder]: For program point mainFINAL(lines 21 53) no Hoare annotation was computed. [2022-04-06 01:04:48,285 INFO L882 garLoopResultBuilder]: For program point L40(lines 40 45) no Hoare annotation was computed. [2022-04-06 01:04:48,285 INFO L882 garLoopResultBuilder]: For program point L40-2(lines 40 45) no Hoare annotation was computed. [2022-04-06 01:04:48,285 INFO L878 garLoopResultBuilder]: At program point L32-2(lines 32 47) the Hoare annotation is: (let ((.cse0 (<= main_~x~0 main_~X~0))) (and (or .cse0 (forall ((main_~y~0 Int)) (= (+ (* 2 (* main_~y~0 main_~x~0)) main_~X~0 main_~v~0) (+ (* main_~y~0 2) (* main_~Y~0 2) (* 2 (* main_~Y~0 main_~x~0))))) (not (= main_~X~0 0))) (or .cse0 (forall ((main_~Y~0 Int)) (= (* 2 (* main_~y~0 main_~x~0)) (+ (* (* main_~X~0 main_~y~0) 2) (* main_~y~0 2))))) (<= main_~X~0 100) (= (+ (* main_~Y~0 2) (* 2 (* main_~Y~0 main_~x~0))) (+ (* (* main_~X~0 main_~y~0) 2) main_~X~0 main_~v~0)) (<= 0 main_~Y~0) (<= 0 main_~X~0) (<= main_~Y~0 100))) [2022-04-06 01:04:48,285 INFO L885 garLoopResultBuilder]: At program point mainENTRY(lines 21 53) the Hoare annotation is: true [2022-04-06 01:04:48,285 INFO L882 garLoopResultBuilder]: For program point L32-3(lines 32 47) no Hoare annotation was computed. [2022-04-06 01:04:48,285 INFO L878 garLoopResultBuilder]: At program point L35(line 35) the Hoare annotation is: (let ((.cse1 (* main_~Y~0 2)) (.cse0 (* 2 main_~xy~0)) (.cse4 (* 2 (* main_~Y~0 main_~x~0))) (.cse2 (* 2 main_~yx~0)) (.cse3 (<= main_~x~0 main_~X~0))) (and (= (+ .cse0 main_~X~0 main_~v~0) (+ .cse1 .cse2)) (or .cse3 (forall ((main_~y~0 Int)) (= (+ (* 2 (* main_~y~0 main_~x~0)) main_~X~0 main_~v~0) (+ (* main_~y~0 2) (* main_~Y~0 2) (* 2 (* main_~Y~0 main_~x~0))))) (not (= main_~X~0 0))) (<= main_~X~0 100) (= (+ .cse1 .cse4) (+ (* (* main_~X~0 main_~y~0) 2) main_~X~0 main_~v~0)) (<= 0 main_~Y~0) (<= 0 main_~X~0) (<= main_~Y~0 100) (or (= (+ .cse0 (* main_~y~0 2) .cse4) (+ (* 2 (* main_~y~0 main_~x~0)) .cse2)) .cse3))) [2022-04-06 01:04:48,285 INFO L882 garLoopResultBuilder]: For program point L35-1(lines 32 47) no Hoare annotation was computed. [2022-04-06 01:04:48,285 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2022-04-06 01:04:48,285 INFO L878 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2022-04-06 01:04:48,285 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2022-04-06 01:04:48,285 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-04-06 01:04:48,285 INFO L885 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-04-06 01:04:48,285 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-04-06 01:04:48,285 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-04-06 01:04:48,286 INFO L882 garLoopResultBuilder]: For program point L15(lines 15 16) no Hoare annotation was computed. [2022-04-06 01:04:48,286 INFO L885 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 13 19) the Hoare annotation is: true [2022-04-06 01:04:48,286 INFO L882 garLoopResultBuilder]: For program point L14(lines 14 17) no Hoare annotation was computed. [2022-04-06 01:04:48,286 INFO L882 garLoopResultBuilder]: For program point L14-2(lines 13 19) no Hoare annotation was computed. [2022-04-06 01:04:48,286 INFO L882 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 13 19) no Hoare annotation was computed. [2022-04-06 01:04:48,286 INFO L882 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2022-04-06 01:04:48,288 INFO L719 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1] [2022-04-06 01:04:48,288 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-04-06 01:04:48,302 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~y~0,QUANTIFIED] [2022-04-06 01:04:48,303 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~y~0,QUANTIFIED] [2022-04-06 01:04:48,307 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~y~0,QUANTIFIED] [2022-04-06 01:04:48,307 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~y~0,QUANTIFIED] [2022-04-06 01:04:48,308 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.04 01:04:48 BoogieIcfgContainer [2022-04-06 01:04:48,308 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-06 01:04:48,309 INFO L158 Benchmark]: Toolchain (without parser) took 143360.56ms. Allocated memory was 170.9MB in the beginning and 233.8MB in the end (delta: 62.9MB). Free memory was 112.3MB in the beginning and 86.9MB in the end (delta: 25.5MB). Peak memory consumption was 89.3MB. Max. memory is 8.0GB. [2022-04-06 01:04:48,309 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 170.9MB. Free memory was 128.5MB in the beginning and 128.4MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 8.0GB. [2022-04-06 01:04:48,309 INFO L158 Benchmark]: CACSL2BoogieTranslator took 194.05ms. Allocated memory was 170.9MB in the beginning and 233.8MB in the end (delta: 62.9MB). Free memory was 112.2MB in the beginning and 207.0MB in the end (delta: -94.9MB). Peak memory consumption was 15.9MB. Max. memory is 8.0GB. [2022-04-06 01:04:48,309 INFO L158 Benchmark]: Boogie Preprocessor took 20.61ms. Allocated memory is still 233.8MB. Free memory was 207.0MB in the beginning and 205.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-04-06 01:04:48,309 INFO L158 Benchmark]: RCFGBuilder took 217.26ms. Allocated memory is still 233.8MB. Free memory was 205.5MB in the beginning and 193.9MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-04-06 01:04:48,309 INFO L158 Benchmark]: TraceAbstraction took 142925.34ms. Allocated memory is still 233.8MB. Free memory was 193.4MB in the beginning and 86.9MB in the end (delta: 106.5MB). Peak memory consumption was 106.5MB. Max. memory is 8.0GB. [2022-04-06 01:04:48,310 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 170.9MB. Free memory was 128.5MB in the beginning and 128.4MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 194.05ms. Allocated memory was 170.9MB in the beginning and 233.8MB in the end (delta: 62.9MB). Free memory was 112.2MB in the beginning and 207.0MB in the end (delta: -94.9MB). Peak memory consumption was 15.9MB. Max. memory is 8.0GB. * Boogie Preprocessor took 20.61ms. Allocated memory is still 233.8MB. Free memory was 207.0MB in the beginning and 205.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 217.26ms. Allocated memory is still 233.8MB. Free memory was 205.5MB in the beginning and 193.9MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 142925.34ms. Allocated memory is still 233.8MB. Free memory was 193.4MB in the beginning and 86.9MB in the end (delta: 106.5MB). Peak memory consumption was 106.5MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~y~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~y~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~y~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~y~0,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 16]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 35 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 142.9s, OverallIterations: 8, TraceHistogramMax: 5, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 45.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 27.6s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 7 mSolverCounterUnknown, 148 SdHoareTripleChecker+Valid, 19.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 140 mSDsluCounter, 1155 SdHoareTripleChecker+Invalid, 19.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 131 IncrementalHoareTripleChecker+Unchecked, 962 mSDsCounter, 100 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1412 IncrementalHoareTripleChecker+Invalid, 1650 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 100 mSolverCounterUnsat, 193 mSDtfsCounter, 1412 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 632 GetRequests, 492 SyntacticMatches, 6 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 654 ImplicationChecksByTransitivity, 70.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=56occurred in iteration=7, InterpolantAutomatonStates: 103, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 43 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 29 PreInvPairs, 50 NumberOfFragments, 259 HoareAnnotationTreeSize, 29 FomulaSimplifications, 792 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 11 FomulaSimplificationsInter, 4653 FormulaSimplificationTreeSizeReductionInter, 27.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 67.2s InterpolantComputationTime, 327 NumberOfCodeBlocks, 309 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 594 ConstructedInterpolants, 6 QuantifiedInterpolants, 3384 SizeOfPredicates, 50 NumberOfNonLiveVariables, 854 ConjunctsInSsa, 128 ConjunctsInUnsatCore, 14 InterpolantComputations, 2 PerfectInterpolantSequences, 339/426 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 32]: Loop Invariant [2022-04-06 01:04:48,321 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~y~0,QUANTIFIED] [2022-04-06 01:04:48,321 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~y~0,QUANTIFIED] [2022-04-06 01:04:48,322 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~y~0,QUANTIFIED] [2022-04-06 01:04:48,322 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~y~0,QUANTIFIED] Derived loop invariant: (((((((x <= X || (forall main_~y~0 : int :: 2 * (main_~y~0 * x) + X + v == main_~y~0 * 2 + Y * 2 + 2 * (Y * x))) || !(X == 0)) && (x <= X || (forall main_~Y~0 : int :: 2 * (y * x) == X * y * 2 + y * 2))) && X <= 100) && Y * 2 + 2 * (Y * x) == X * y * 2 + X + v) && 0 <= Y) && 0 <= X) && Y <= 100 RESULT: Ultimate proved your program to be correct! [2022-04-06 01:04:48,451 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...