/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/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/fermat2-ll_valuebound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05ce600 [2022-02-23 22:56:35,545 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-23 22:56:35,546 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-23 22:56:35,573 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-23 22:56:35,573 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-23 22:56:35,574 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-23 22:56:35,575 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-23 22:56:35,577 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-23 22:56:35,578 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-23 22:56:35,579 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-23 22:56:35,580 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-23 22:56:35,581 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-23 22:56:35,581 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-23 22:56:35,582 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-23 22:56:35,583 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-23 22:56:35,584 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-23 22:56:35,585 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-23 22:56:35,585 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-23 22:56:35,587 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-23 22:56:35,588 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-23 22:56:35,589 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-23 22:56:35,590 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-23 22:56:35,591 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-23 22:56:35,592 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-23 22:56:35,594 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-02-23 22:56:35,600 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-23 22:56:35,601 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-23 22:56:35,602 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-23 22:56:35,607 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf [2022-02-23 22:56:35,637 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-23 22:56:35,638 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-23 22:56:35,639 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-23 22:56:35,639 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-23 22:56:35,640 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-23 22:56:35,640 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-23 22:56:35,640 INFO L138 SettingsManager]: * Use SBE=true [2022-02-23 22:56:35,640 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-23 22:56:35,641 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-23 22:56:35,641 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-23 22:56:35,641 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-23 22:56:35,642 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-23 22:56:35,642 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-23 22:56:35,642 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-23 22:56:35,642 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-23 22:56:35,642 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-23 22:56:35,642 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-23 22:56:35,643 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-23 22:56:35,643 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-23 22:56:35,643 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-23 22:56:35,643 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-23 22:56:35,643 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-23 22:56:35,643 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-23 22:56:35,643 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-23 22:56:35,643 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-23 22:56:35,643 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-23 22:56:35,644 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-02-23 22:56:35,644 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-02-23 22:56:35,644 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-02-23 22:56:35,645 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_QVASR 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-23 22:56:35,846 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-23 22:56:35,862 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-23 22:56:35,864 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-23 22:56:35,864 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-23 22:56:35,865 INFO L275 PluginConnector]: CDTParser initialized [2022-02-23 22:56:35,866 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/fermat2-ll_valuebound2.c [2022-02-23 22:56:35,907 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efba5f6ea/98a84f8c90bd4037a8095adfba7232c3/FLAGf395233fb [2022-02-23 22:56:36,254 INFO L306 CDTParser]: Found 1 translation units. [2022-02-23 22:56:36,254 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/fermat2-ll_valuebound2.c [2022-02-23 22:56:36,264 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efba5f6ea/98a84f8c90bd4037a8095adfba7232c3/FLAGf395233fb [2022-02-23 22:56:36,647 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efba5f6ea/98a84f8c90bd4037a8095adfba7232c3 [2022-02-23 22:56:36,648 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-23 22:56:36,650 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-02-23 22:56:36,652 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-23 22:56:36,652 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-23 22:56:36,654 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-23 22:56:36,655 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 10:56:36" (1/1) ... [2022-02-23 22:56:36,656 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6277ebdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:56:36, skipping insertion in model container [2022-02-23 22:56:36,656 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 10:56:36" (1/1) ... [2022-02-23 22:56:36,663 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-23 22:56:36,674 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-23 22:56:36,848 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/fermat2-ll_valuebound2.c[524,537] [2022-02-23 22:56:36,865 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-23 22:56:36,872 INFO L203 MainTranslator]: Completed pre-run [2022-02-23 22:56:36,881 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/fermat2-ll_valuebound2.c[524,537] [2022-02-23 22:56:36,888 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-23 22:56:36,901 INFO L208 MainTranslator]: Completed translation [2022-02-23 22:56:36,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:56:36 WrapperNode [2022-02-23 22:56:36,902 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-23 22:56:36,905 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-23 22:56:36,906 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-23 22:56:36,906 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-23 22:56:36,917 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:56:36" (1/1) ... [2022-02-23 22:56:36,918 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:56:36" (1/1) ... [2022-02-23 22:56:36,925 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:56:36" (1/1) ... [2022-02-23 22:56:36,926 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:56:36" (1/1) ... [2022-02-23 22:56:36,937 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:56:36" (1/1) ... [2022-02-23 22:56:36,941 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:56:36" (1/1) ... [2022-02-23 22:56:36,945 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:56:36" (1/1) ... [2022-02-23 22:56:36,948 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-23 22:56:36,949 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-23 22:56:36,949 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-23 22:56:36,949 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-23 22:56:36,950 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:56:36" (1/1) ... [2022-02-23 22:56:36,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-23 22:56:36,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 22:56:36,980 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) [2022-02-23 22:56:37,004 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 [2022-02-23 22:56:37,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-23 22:56:37,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-23 22:56:37,022 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-23 22:56:37,022 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-02-23 22:56:37,022 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-02-23 22:56:37,023 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-23 22:56:37,023 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-23 22:56:37,023 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-23 22:56:37,023 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-23 22:56:37,023 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-23 22:56:37,023 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-02-23 22:56:37,024 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-02-23 22:56:37,024 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-02-23 22:56:37,024 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-23 22:56:37,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-23 22:56:37,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-23 22:56:37,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-23 22:56:37,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-23 22:56:37,028 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-23 22:56:37,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-23 22:56:37,077 INFO L234 CfgBuilder]: Building ICFG [2022-02-23 22:56:37,078 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-23 22:56:37,176 INFO L275 CfgBuilder]: Performing block encoding [2022-02-23 22:56:37,181 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-23 22:56:37,181 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-02-23 22:56:37,183 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 10:56:37 BoogieIcfgContainer [2022-02-23 22:56:37,183 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-23 22:56:37,184 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-02-23 22:56:37,184 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-02-23 22:56:37,185 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-02-23 22:56:37,187 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 10:56:37" (1/1) ... [2022-02-23 22:56:37,204 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 23.02 10:56:37 BasicIcfg [2022-02-23 22:56:37,204 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-02-23 22:56:37,206 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-23 22:56:37,206 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-23 22:56:37,209 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-23 22:56:37,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 10:56:36" (1/4) ... [2022-02-23 22:56:37,209 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37d7d772 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 10:56:37, skipping insertion in model container [2022-02-23 22:56:37,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:56:36" (2/4) ... [2022-02-23 22:56:37,210 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37d7d772 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 10:56:37, skipping insertion in model container [2022-02-23 22:56:37,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 10:56:37" (3/4) ... [2022-02-23 22:56:37,210 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37d7d772 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 10:56:37, skipping insertion in model container [2022-02-23 22:56:37,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 23.02 10:56:37" (4/4) ... [2022-02-23 22:56:37,211 INFO L111 eAbstractionObserver]: Analyzing ICFG fermat2-ll_valuebound2.cqvasr [2022-02-23 22:56:37,215 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-23 22:56:37,215 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-23 22:56:37,249 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-23 22:56:37,254 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-02-23 22:56:37,255 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-23 22:56:37,269 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-02-23 22:56:37,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-23 22:56:37,274 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 22:56:37,274 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 22:56:37,276 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 22:56:37,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 22:56:37,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1450325676, now seen corresponding path program 1 times [2022-02-23 22:56:37,293 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 22:56:37,293 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936567019] [2022-02-23 22:56:37,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 22:56:37,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 22:56:37,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 22:56:37,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 22:56:37,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 22:56:37,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-23 22:56:37,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 22:56:37,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-23 22:56:37,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 22:56:37,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-02-23 22:56:37,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 22:56:37,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-02-23 22:56:37,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 22:56:37,485 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-02-23 22:56:37,485 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 22:56:37,486 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936567019] [2022-02-23 22:56:37,486 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936567019] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 22:56:37,487 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 22:56:37,487 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-23 22:56:37,488 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197556281] [2022-02-23 22:56:37,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 22:56:37,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-23 22:56:37,492 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 22:56:37,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-23 22:56:37,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-23 22:56:37,528 INFO L87 Difference]: Start difference. First operand has 32 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) 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, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-02-23 22:56:37,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 22:56:37,588 INFO L93 Difference]: Finished difference Result 57 states and 80 transitions. [2022-02-23 22:56:37,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-23 22:56:37,591 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, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33 [2022-02-23 22:56:37,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 22:56:37,597 INFO L225 Difference]: With dead ends: 57 [2022-02-23 22:56:37,597 INFO L226 Difference]: Without dead ends: 27 [2022-02-23 22:56:37,600 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-23 22:56:37,603 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 18 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-23 22:56:37,605 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 34 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-23 22:56:37,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-02-23 22:56:37,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-02-23 22:56:37,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 8 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-02-23 22:56:37,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2022-02-23 22:56:37,637 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 33 [2022-02-23 22:56:37,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 22:56:37,638 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2022-02-23 22:56:37,638 INFO L471 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, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-02-23 22:56:37,638 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2022-02-23 22:56:37,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-23 22:56:37,640 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 22:56:37,640 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 22:56:37,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-23 22:56:37,641 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 22:56:37,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 22:56:37,642 INFO L85 PathProgramCache]: Analyzing trace with hash 512475503, now seen corresponding path program 1 times [2022-02-23 22:56:37,642 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 22:56:37,642 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667694471] [2022-02-23 22:56:37,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 22:56:37,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 22:56:37,664 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-23 22:56:37,664 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [405421516] [2022-02-23 22:56:37,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 22:56:37,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 22:56:37,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 22:56:37,667 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) [2022-02-23 22:56:37,671 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-02-23 22:56:37,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 22:56:37,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 29 conjunts are in the unsatisfiable core [2022-02-23 22:56:37,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 22:56:44,722 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-02-23 22:56:44,723 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-23 22:56:44,723 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 22:56:44,723 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667694471] [2022-02-23 22:56:44,724 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-23 22:56:44,727 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [405421516] [2022-02-23 22:56:44,727 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [405421516] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 22:56:44,728 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 22:56:44,728 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-02-23 22:56:44,729 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528190871] [2022-02-23 22:56:44,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 22:56:44,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-23 22:56:44,730 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 22:56:44,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-23 22:56:44,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=84, Unknown=1, NotChecked=0, Total=110 [2022-02-23 22:56:44,731 INFO L87 Difference]: Start difference. First operand 27 states and 32 transitions. Second operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 7 states have internal predecessors, (12), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-02-23 22:56:53,921 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 9.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-02-23 22:56:53,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 22:56:53,926 INFO L93 Difference]: Finished difference Result 41 states and 47 transitions. [2022-02-23 22:56:53,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-23 22:56:53,926 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 7 states have internal predecessors, (12), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) Word has length 33 [2022-02-23 22:56:53,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 22:56:53,927 INFO L225 Difference]: With dead ends: 41 [2022-02-23 22:56:53,928 INFO L226 Difference]: Without dead ends: 28 [2022-02-23 22:56:53,928 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=40, Invalid=141, Unknown=1, NotChecked=0, Total=182 [2022-02-23 22:56:53,929 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 14 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2022-02-23 22:56:53,930 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 146 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 83 Invalid, 1 Unknown, 0 Unchecked, 9.1s Time] [2022-02-23 22:56:53,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-02-23 22:56:53,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2022-02-23 22:56:53,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 16 states have (on average 1.0) internal successors, (16), 16 states have internal predecessors, (16), 8 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-02-23 22:56:53,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2022-02-23 22:56:53,938 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 33 [2022-02-23 22:56:53,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 22:56:53,939 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2022-02-23 22:56:53,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 7 states have internal predecessors, (12), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-02-23 22:56:53,940 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2022-02-23 22:56:53,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-23 22:56:53,941 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 22:56:53,941 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 22:56:53,964 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-02-23 22:56:54,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 22:56:54,164 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 22:56:54,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 22:56:54,164 INFO L85 PathProgramCache]: Analyzing trace with hash -397056057, now seen corresponding path program 1 times [2022-02-23 22:56:54,165 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 22:56:54,165 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012453726] [2022-02-23 22:56:54,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 22:56:54,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 22:56:54,178 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-23 22:56:54,178 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2084936241] [2022-02-23 22:56:54,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 22:56:54,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 22:56:54,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 22:56:54,180 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) [2022-02-23 22:56:54,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-02-23 22:56:54,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 22:56:54,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-23 22:56:54,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 22:56:54,332 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-02-23 22:56:54,332 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 22:56:54,491 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-02-23 22:56:54,492 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 22:56:54,492 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012453726] [2022-02-23 22:56:54,492 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-23 22:56:54,492 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2084936241] [2022-02-23 22:56:54,492 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2084936241] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 22:56:54,493 INFO L191 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-02-23 22:56:54,493 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2022-02-23 22:56:54,493 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695333338] [2022-02-23 22:56:54,493 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-02-23 22:56:54,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-23 22:56:54,494 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 22:56:54,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-23 22:56:54,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-02-23 22:56:54,496 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 7 states have internal predecessors, (19), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) [2022-02-23 22:56:54,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 22:56:54,587 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2022-02-23 22:56:54,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-23 22:56:54,588 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 7 states have internal predecessors, (19), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) Word has length 39 [2022-02-23 22:56:54,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 22:56:54,588 INFO L225 Difference]: With dead ends: 28 [2022-02-23 22:56:54,589 INFO L226 Difference]: Without dead ends: 0 [2022-02-23 22:56:54,589 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 68 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-02-23 22:56:54,590 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 11 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-23 22:56:54,590 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 146 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-23 22:56:54,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-02-23 22:56:54,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-02-23 22:56:54,591 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) [2022-02-23 22:56:54,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-02-23 22:56:54,591 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 39 [2022-02-23 22:56:54,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 22:56:54,592 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-02-23 22:56:54,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 7 states have internal predecessors, (19), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) [2022-02-23 22:56:54,592 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-02-23 22:56:54,592 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-23 22:56:54,594 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-23 22:56:54,621 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-02-23 22:56:54,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-02-23 22:56:54,797 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-02-23 22:56:55,025 INFO L854 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2022-02-23 22:56:55,025 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2022-02-23 22:56:55,025 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2022-02-23 22:56:55,025 INFO L861 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-02-23 22:56:55,026 INFO L861 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-02-23 22:56:55,026 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-02-23 22:56:55,026 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-02-23 22:56:55,026 INFO L861 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 8 10) the Hoare annotation is: true [2022-02-23 22:56:55,026 INFO L858 garLoopResultBuilder]: For program point L9(line 9) no Hoare annotation was computed. [2022-02-23 22:56:55,026 INFO L858 garLoopResultBuilder]: For program point L9-2(lines 8 10) no Hoare annotation was computed. [2022-02-23 22:56:55,026 INFO L858 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 8 10) no Hoare annotation was computed. [2022-02-23 22:56:55,026 INFO L861 garLoopResultBuilder]: At program point mainENTRY(lines 19 51) the Hoare annotation is: true [2022-02-23 22:56:55,027 INFO L861 garLoopResultBuilder]: At program point L23(line 23) the Hoare annotation is: true [2022-02-23 22:56:55,027 INFO L858 garLoopResultBuilder]: For program point L23-1(line 23) no Hoare annotation was computed. [2022-02-23 22:56:55,027 INFO L854 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: (and (<= 0 main_~A~0) (<= main_~A~0 2)) [2022-02-23 22:56:55,027 INFO L854 garLoopResultBuilder]: At program point L25-1(line 25) the Hoare annotation is: (and (<= 0 main_~A~0) (<= main_~R~0 2) (<= main_~A~0 2) (<= 0 main_~R~0)) [2022-02-23 22:56:55,027 INFO L854 garLoopResultBuilder]: At program point L27(line 27) the Hoare annotation is: (and (<= main_~A~0 2) (< (+ (* main_~R~0 main_~R~0) 1) (+ main_~A~0 (* main_~R~0 2)))) [2022-02-23 22:56:55,027 INFO L858 garLoopResultBuilder]: For program point L29(line 29) no Hoare annotation was computed. [2022-02-23 22:56:55,028 INFO L854 garLoopResultBuilder]: At program point L39-2(lines 35 46) the Hoare annotation is: (let ((.cse1 (div (+ (* (- 1) main_~u~0) 1) (- 2)))) (let ((.cse0 (* .cse1 .cse1))) (and (= (mod (+ main_~u~0 1) 2) 0) (= (+ main_~A~0 main_~r~0) .cse0) (= (mod main_~A~0 2) 1) (< (+ .cse0 1) (+ main_~A~0 (* 2 .cse1))) (<= main_~A~0 2) (= main_~v~0 1) (< (+ (* main_~R~0 main_~R~0) 1) (+ main_~A~0 (* main_~R~0 2)))))) [2022-02-23 22:56:55,028 INFO L854 garLoopResultBuilder]: At program point L35-2(lines 35 46) the Hoare annotation is: (let ((.cse1 (div (+ (* (- 1) main_~u~0) 1) (- 2)))) (let ((.cse0 (* .cse1 .cse1))) (and (= (+ main_~A~0 main_~r~0) .cse0) (< (+ .cse0 1) (+ main_~A~0 (* 2 .cse1))) (<= main_~A~0 2) (= main_~v~0 1) (= (+ (* main_~v~0 2) (* main_~u~0 main_~u~0)) (+ (* main_~v~0 main_~v~0) (* main_~u~0 2) (* main_~A~0 4))) (< (+ (* main_~R~0 main_~R~0) 1) (+ main_~A~0 (* main_~R~0 2)))))) [2022-02-23 22:56:55,028 INFO L854 garLoopResultBuilder]: At program point L36(line 36) the Hoare annotation is: (let ((.cse1 (div (+ (* (- 1) main_~u~0) 1) (- 2)))) (let ((.cse0 (* .cse1 .cse1))) (and (= (mod (+ main_~u~0 1) 2) 0) (= (+ main_~A~0 main_~r~0) .cse0) (= (mod main_~A~0 2) 1) (< (+ .cse0 1) (+ main_~A~0 (* 2 .cse1))) (<= main_~A~0 2) (= main_~v~0 1) (< (+ (* main_~R~0 main_~R~0) 1) (+ main_~A~0 (* main_~R~0 2)))))) [2022-02-23 22:56:55,028 INFO L858 garLoopResultBuilder]: For program point L49(line 49) no Hoare annotation was computed. [2022-02-23 22:56:55,028 INFO L858 garLoopResultBuilder]: For program point L36-1(lines 35 46) no Hoare annotation was computed. [2022-02-23 22:56:55,028 INFO L858 garLoopResultBuilder]: For program point mainFINAL(lines 19 51) no Hoare annotation was computed. [2022-02-23 22:56:55,028 INFO L858 garLoopResultBuilder]: For program point L39(lines 39 45) no Hoare annotation was computed. [2022-02-23 22:56:55,029 INFO L858 garLoopResultBuilder]: For program point mainEXIT(lines 19 51) no Hoare annotation was computed. [2022-02-23 22:56:55,029 INFO L861 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 11 17) the Hoare annotation is: true [2022-02-23 22:56:55,029 INFO L858 garLoopResultBuilder]: For program point L12(lines 12 15) no Hoare annotation was computed. [2022-02-23 22:56:55,029 INFO L858 garLoopResultBuilder]: For program point L13(lines 13 14) no Hoare annotation was computed. [2022-02-23 22:56:55,029 INFO L858 garLoopResultBuilder]: For program point L12-2(lines 11 17) no Hoare annotation was computed. [2022-02-23 22:56:55,029 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2022-02-23 22:56:55,029 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 11 17) no Hoare annotation was computed. [2022-02-23 22:56:55,032 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-02-23 22:56:55,034 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-23 22:56:55,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 10:56:55 BasicIcfg [2022-02-23 22:56:55,054 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-23 22:56:55,056 INFO L158 Benchmark]: Toolchain (without parser) took 18405.18ms. Allocated memory was 194.0MB in the beginning and 242.2MB in the end (delta: 48.2MB). Free memory was 137.7MB in the beginning and 140.6MB in the end (delta: -2.9MB). Peak memory consumption was 46.0MB. Max. memory is 8.0GB. [2022-02-23 22:56:55,056 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 194.0MB. Free memory is still 154.1MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-23 22:56:55,057 INFO L158 Benchmark]: CACSL2BoogieTranslator took 251.65ms. Allocated memory was 194.0MB in the beginning and 242.2MB in the end (delta: 48.2MB). Free memory was 137.6MB in the beginning and 214.6MB in the end (delta: -77.0MB). Peak memory consumption was 11.8MB. Max. memory is 8.0GB. [2022-02-23 22:56:55,058 INFO L158 Benchmark]: Boogie Preprocessor took 42.80ms. Allocated memory is still 242.2MB. Free memory was 214.6MB in the beginning and 213.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-02-23 22:56:55,060 INFO L158 Benchmark]: RCFGBuilder took 234.19ms. Allocated memory is still 242.2MB. Free memory was 213.0MB in the beginning and 202.5MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-02-23 22:56:55,063 INFO L158 Benchmark]: IcfgTransformer took 20.87ms. Allocated memory is still 242.2MB. Free memory was 202.5MB in the beginning and 201.0MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-23 22:56:55,069 INFO L158 Benchmark]: TraceAbstraction took 17848.55ms. Allocated memory is still 242.2MB. Free memory was 200.4MB in the beginning and 140.6MB in the end (delta: 59.8MB). Peak memory consumption was 60.3MB. Max. memory is 8.0GB. [2022-02-23 22:56:55,073 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 194.0MB. Free memory is still 154.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 251.65ms. Allocated memory was 194.0MB in the beginning and 242.2MB in the end (delta: 48.2MB). Free memory was 137.6MB in the beginning and 214.6MB in the end (delta: -77.0MB). Peak memory consumption was 11.8MB. Max. memory is 8.0GB. * Boogie Preprocessor took 42.80ms. Allocated memory is still 242.2MB. Free memory was 214.6MB in the beginning and 213.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 234.19ms. Allocated memory is still 242.2MB. Free memory was 213.0MB in the beginning and 202.5MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * IcfgTransformer took 20.87ms. Allocated memory is still 242.2MB. Free memory was 202.5MB in the beginning and 201.0MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * TraceAbstraction took 17848.55ms. Allocated memory is still 242.2MB. Free memory was 200.4MB in the beginning and 140.6MB in the end (delta: 59.8MB). Peak memory consumption was 60.3MB. Max. memory is 8.0GB. * 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: 14]: 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 5 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 17.8s, OverallIterations: 3, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 9.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 52 SdHoareTripleChecker+Valid, 9.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 43 mSDsluCounter, 326 SdHoareTripleChecker+Invalid, 9.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 253 mSDsCounter, 15 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 112 IncrementalHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15 mSolverCounterUnsat, 73 mSDtfsCounter, 112 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 130 GetRequests, 106 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 6.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, InterpolantAutomatonStates: 20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 13 LocationsWithAnnotation, 24 PreInvPairs, 30 NumberOfFragments, 288 HoareAnnotationTreeSize, 24 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 13 FomulaSimplificationsInter, 81 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 7.4s InterpolantComputationTime, 105 NumberOfCodeBlocks, 105 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 140 ConstructedInterpolants, 0 QuantifiedInterpolants, 480 SizeOfPredicates, 13 NumberOfNonLiveVariables, 209 ConjunctsInSsa, 39 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 98/100 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: 35]: Loop Invariant Derived loop invariant: ((((((u + 1) % 2 == 0 && A + r == (-1 * u + 1) / -2 * ((-1 * u + 1) / -2)) && A % 2 == 1) && (-1 * u + 1) / -2 * ((-1 * u + 1) / -2) + 1 < A + 2 * ((-1 * u + 1) / -2)) && A <= 2) && v == 1) && R * R + 1 < A + R * 2 RESULT: Ultimate proved your program to be correct! [2022-02-23 22:56:55,107 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...