/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/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/geo1-u_unwindbound5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-7968f31 [2022-03-18 02:59:33,759 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-18 02:59:33,761 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-18 02:59:33,806 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-18 02:59:33,806 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-18 02:59:33,807 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-18 02:59:33,810 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-18 02:59:33,815 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-18 02:59:33,817 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-18 02:59:33,822 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-18 02:59:33,823 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-18 02:59:33,824 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-18 02:59:33,824 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-18 02:59:33,826 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-18 02:59:33,827 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-18 02:59:33,830 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-18 02:59:33,830 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-18 02:59:33,831 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-18 02:59:33,833 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-18 02:59:33,838 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-18 02:59:33,840 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-18 02:59:33,841 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-18 02:59:33,843 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-18 02:59:33,843 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-18 02:59:33,845 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-18 02:59:33,850 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-03-18 02:59:33,850 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-03-18 02:59:33,851 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-03-18 02:59:33,852 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-03-18 02:59:33,852 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-03-18 02:59:33,853 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-03-18 02:59:33,853 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-03-18 02:59:33,855 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-03-18 02:59:33,856 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-03-18 02:59:33,857 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-03-18 02:59:33,857 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-03-18 02:59:33,857 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-03-18 02:59:33,858 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-03-18 02:59:33,858 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-03-18 02:59:33,858 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-18 02:59:33,859 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-18 02:59:33,861 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-18 02:59:33,861 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-03-18 02:59:33,874 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-18 02:59:33,875 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-18 02:59:33,875 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-18 02:59:33,876 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-18 02:59:33,876 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-18 02:59:33,876 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-18 02:59:33,876 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-18 02:59:33,876 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-18 02:59:33,876 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-18 02:59:33,877 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-18 02:59:33,877 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-18 02:59:33,877 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-18 02:59:33,877 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-18 02:59:33,877 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-18 02:59:33,878 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-18 02:59:33,878 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 02:59:33,878 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-18 02:59:33,878 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-03-18 02:59:33,878 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-03-18 02:59:33,878 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-03-18 02:59:33,878 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-18 02:59:33,878 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-03-18 02:59:33,878 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-18 02:59:34,103 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-18 02:59:34,130 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-18 02:59:34,132 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-18 02:59:34,133 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-18 02:59:34,134 INFO L275 PluginConnector]: CDTParser initialized [2022-03-18 02:59:34,135 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/geo1-u_unwindbound5.c [2022-03-18 02:59:34,181 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04d3f7999/cebaa66239d04172b885a93cff0a62cd/FLAGa3b46482c [2022-03-18 02:59:34,587 INFO L306 CDTParser]: Found 1 translation units. [2022-03-18 02:59:34,587 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/geo1-u_unwindbound5.c [2022-03-18 02:59:34,592 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04d3f7999/cebaa66239d04172b885a93cff0a62cd/FLAGa3b46482c [2022-03-18 02:59:34,608 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04d3f7999/cebaa66239d04172b885a93cff0a62cd [2022-03-18 02:59:34,610 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-18 02:59:34,612 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-18 02:59:34,614 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-18 02:59:34,614 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-18 02:59:34,617 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-18 02:59:34,618 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 02:59:34" (1/1) ... [2022-03-18 02:59:34,619 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32d1b404 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 02:59:34, skipping insertion in model container [2022-03-18 02:59:34,620 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 02:59:34" (1/1) ... [2022-03-18 02:59:34,626 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-18 02:59:34,639 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-18 02:59:34,794 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/geo1-u_unwindbound5.c[555,568] [2022-03-18 02:59:34,807 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 02:59:34,813 INFO L203 MainTranslator]: Completed pre-run [2022-03-18 02:59:34,823 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/geo1-u_unwindbound5.c[555,568] [2022-03-18 02:59:34,827 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 02:59:34,837 INFO L208 MainTranslator]: Completed translation [2022-03-18 02:59:34,837 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 02:59:34 WrapperNode [2022-03-18 02:59:34,837 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-18 02:59:34,838 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-18 02:59:34,838 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-18 02:59:34,838 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-18 02:59:34,846 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 02:59:34" (1/1) ... [2022-03-18 02:59:34,847 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 02:59:34" (1/1) ... [2022-03-18 02:59:34,851 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 02:59:34" (1/1) ... [2022-03-18 02:59:34,851 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 02:59:34" (1/1) ... [2022-03-18 02:59:34,855 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 02:59:34" (1/1) ... [2022-03-18 02:59:34,857 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 02:59:34" (1/1) ... [2022-03-18 02:59:34,858 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 02:59:34" (1/1) ... [2022-03-18 02:59:34,859 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-18 02:59:34,860 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-18 02:59:34,860 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-18 02:59:34,860 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-18 02:59:34,861 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 02:59:34" (1/1) ... [2022-03-18 02:59:34,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 02:59:34,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 02:59:34,887 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) [2022-03-18 02:59:34,895 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 [2022-03-18 02:59:34,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-18 02:59:34,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-18 02:59:34,926 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-18 02:59:34,926 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-03-18 02:59:34,926 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-18 02:59:34,926 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-18 02:59:34,927 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-18 02:59:34,927 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-18 02:59:34,927 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-18 02:59:34,927 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-18 02:59:34,927 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2022-03-18 02:59:34,928 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-03-18 02:59:34,928 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-18 02:59:34,928 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-18 02:59:34,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-18 02:59:34,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-18 02:59:34,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-18 02:59:34,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-18 02:59:34,929 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-18 02:59:34,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-18 02:59:34,992 INFO L234 CfgBuilder]: Building ICFG [2022-03-18 02:59:34,994 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-18 02:59:35,138 INFO L275 CfgBuilder]: Performing block encoding [2022-03-18 02:59:35,157 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-18 02:59:35,158 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-18 02:59:35,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 02:59:35 BoogieIcfgContainer [2022-03-18 02:59:35,159 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-18 02:59:35,161 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-18 02:59:35,161 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-18 02:59:35,163 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-18 02:59:35,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.03 02:59:34" (1/3) ... [2022-03-18 02:59:35,164 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@504cb785 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 02:59:35, skipping insertion in model container [2022-03-18 02:59:35,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 02:59:34" (2/3) ... [2022-03-18 02:59:35,164 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@504cb785 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 02:59:35, skipping insertion in model container [2022-03-18 02:59:35,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 02:59:35" (3/3) ... [2022-03-18 02:59:35,165 INFO L111 eAbstractionObserver]: Analyzing ICFG geo1-u_unwindbound5.c [2022-03-18 02:59:35,169 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-03-18 02:59:35,169 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-18 02:59:35,209 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-18 02:59:35,228 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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 [2022-03-18 02:59:35,229 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-18 02:59:35,241 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 15 states have internal predecessors, (19), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-03-18 02:59:35,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-03-18 02:59:35,246 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 02:59:35,247 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 02:59:35,247 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 02:59:35,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 02:59:35,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1864317590, now seen corresponding path program 1 times [2022-03-18 02:59:35,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 02:59:35,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [912318538] [2022-03-18 02:59:35,268 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 02:59:35,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1864317590, now seen corresponding path program 2 times [2022-03-18 02:59:35,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 02:59:35,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186794872] [2022-03-18 02:59:35,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 02:59:35,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 02:59:35,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 02:59:35,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 02:59:35,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 02:59:35,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 02:59:35,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 02:59:35,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186794872] [2022-03-18 02:59:35,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186794872] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 02:59:35,461 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 02:59:35,462 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-18 02:59:35,464 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 02:59:35,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [912318538] [2022-03-18 02:59:35,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [912318538] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 02:59:35,464 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 02:59:35,465 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-18 02:59:35,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281271877] [2022-03-18 02:59:35,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 02:59:35,468 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-18 02:59:35,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 02:59:35,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-18 02:59:35,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-18 02:59:35,493 INFO L87 Difference]: Start difference. First operand has 23 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 15 states have internal predecessors, (19), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 02:59:35,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 02:59:35,551 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions. [2022-03-18 02:59:35,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-18 02:59:35,560 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-03-18 02:59:35,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 02:59:35,566 INFO L225 Difference]: With dead ends: 41 [2022-03-18 02:59:35,566 INFO L226 Difference]: Without dead ends: 19 [2022-03-18 02:59:35,568 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-18 02:59:35,573 INFO L912 BasicCegarLoop]: 24 mSDtfsCounter, 6 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-18 02:59:35,576 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 28 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-18 02:59:35,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-03-18 02:59:35,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2022-03-18 02:59:35,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-18 02:59:35,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2022-03-18 02:59:35,625 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 12 [2022-03-18 02:59:35,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 02:59:35,625 INFO L478 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2022-03-18 02:59:35,627 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 02:59:35,627 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2022-03-18 02:59:35,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-03-18 02:59:35,629 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 02:59:35,629 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 02:59:35,629 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-18 02:59:35,629 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 02:59:35,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 02:59:35,631 INFO L85 PathProgramCache]: Analyzing trace with hash 2049175951, now seen corresponding path program 1 times [2022-03-18 02:59:35,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 02:59:35,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [956791551] [2022-03-18 02:59:35,634 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 02:59:35,634 INFO L85 PathProgramCache]: Analyzing trace with hash 2049175951, now seen corresponding path program 2 times [2022-03-18 02:59:35,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 02:59:35,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452765753] [2022-03-18 02:59:35,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 02:59:35,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 02:59:35,673 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 02:59:35,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [318982446] [2022-03-18 02:59:35,674 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 02:59:35,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 02:59:35,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 02:59:35,676 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) [2022-03-18 02:59:35,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-18 02:59:35,733 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-18 02:59:35,733 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 02:59:35,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-18 02:59:35,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 02:59:35,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 02:59:35,865 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 02:59:35,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 02:59:35,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452765753] [2022-03-18 02:59:35,866 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 02:59:35,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318982446] [2022-03-18 02:59:35,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [318982446] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 02:59:35,867 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 02:59:35,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-18 02:59:35,868 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 02:59:35,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [956791551] [2022-03-18 02:59:35,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [956791551] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 02:59:35,869 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 02:59:35,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-18 02:59:35,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092881521] [2022-03-18 02:59:35,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 02:59:35,870 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-18 02:59:35,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 02:59:35,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-18 02:59:35,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-18 02:59:35,875 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 02:59:35,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 02:59:35,936 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2022-03-18 02:59:35,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-18 02:59:35,937 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-03-18 02:59:35,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 02:59:35,938 INFO L225 Difference]: With dead ends: 29 [2022-03-18 02:59:35,938 INFO L226 Difference]: Without dead ends: 27 [2022-03-18 02:59:35,939 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-18 02:59:35,941 INFO L912 BasicCegarLoop]: 16 mSDtfsCounter, 7 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-18 02:59:35,944 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 61 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-18 02:59:35,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-03-18 02:59:35,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2022-03-18 02:59:35,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.25) internal successors, (20), 18 states have internal predecessors, (20), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-03-18 02:59:35,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2022-03-18 02:59:35,962 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 12 [2022-03-18 02:59:35,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 02:59:35,963 INFO L478 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2022-03-18 02:59:35,963 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 02:59:35,963 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2022-03-18 02:59:35,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-03-18 02:59:35,964 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 02:59:35,964 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 02:59:35,992 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-18 02:59:36,183 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 [2022-03-18 02:59:36,184 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 02:59:36,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 02:59:36,185 INFO L85 PathProgramCache]: Analyzing trace with hash -975399299, now seen corresponding path program 1 times [2022-03-18 02:59:36,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 02:59:36,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1108505283] [2022-03-18 02:59:36,186 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 02:59:36,186 INFO L85 PathProgramCache]: Analyzing trace with hash -975399299, now seen corresponding path program 2 times [2022-03-18 02:59:36,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 02:59:36,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170365654] [2022-03-18 02:59:36,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 02:59:36,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 02:59:36,197 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 02:59:36,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2106083042] [2022-03-18 02:59:36,198 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 02:59:36,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 02:59:36,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 02:59:36,199 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) [2022-03-18 02:59:36,203 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-18 02:59:36,246 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-18 02:59:36,246 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 02:59:36,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-18 02:59:36,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 02:59:36,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 02:59:36,286 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 02:59:36,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 02:59:36,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170365654] [2022-03-18 02:59:36,287 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 02:59:36,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2106083042] [2022-03-18 02:59:36,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2106083042] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 02:59:36,287 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 02:59:36,287 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-18 02:59:36,288 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 02:59:36,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1108505283] [2022-03-18 02:59:36,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1108505283] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 02:59:36,288 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 02:59:36,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-18 02:59:36,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178357263] [2022-03-18 02:59:36,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 02:59:36,289 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-18 02:59:36,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 02:59:36,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-18 02:59:36,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-18 02:59:36,290 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 02:59:36,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 02:59:36,305 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2022-03-18 02:59:36,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-18 02:59:36,306 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2022-03-18 02:59:36,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 02:59:36,309 INFO L225 Difference]: With dead ends: 33 [2022-03-18 02:59:36,309 INFO L226 Difference]: Without dead ends: 25 [2022-03-18 02:59:36,310 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-18 02:59:36,320 INFO L912 BasicCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-18 02:59:36,321 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 48 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-18 02:59:36,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-03-18 02:59:36,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-03-18 02:59:36,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.1875) internal successors, (19), 18 states have internal predecessors, (19), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-03-18 02:59:36,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2022-03-18 02:59:36,328 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 13 [2022-03-18 02:59:36,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 02:59:36,329 INFO L478 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2022-03-18 02:59:36,329 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 02:59:36,329 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2022-03-18 02:59:36,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-18 02:59:36,330 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 02:59:36,330 INFO L500 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 02:59:36,357 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-18 02:59:36,555 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 [2022-03-18 02:59:36,555 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 02:59:36,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 02:59:36,556 INFO L85 PathProgramCache]: Analyzing trace with hash 198190047, now seen corresponding path program 1 times [2022-03-18 02:59:36,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 02:59:36,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [694735171] [2022-03-18 02:59:36,557 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 02:59:36,557 INFO L85 PathProgramCache]: Analyzing trace with hash 198190047, now seen corresponding path program 2 times [2022-03-18 02:59:36,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 02:59:36,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125933712] [2022-03-18 02:59:36,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 02:59:36,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 02:59:36,576 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 02:59:36,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [287276632] [2022-03-18 02:59:36,577 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 02:59:36,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 02:59:36,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 02:59:36,579 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) [2022-03-18 02:59:36,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-18 02:59:36,635 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 02:59:36,635 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2022-03-18 02:59:36,635 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-18 02:59:36,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-18 02:59:36,662 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-18 02:59:36,662 INFO L130 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found a feasible trace [2022-03-18 02:59:36,663 INFO L614 BasicCegarLoop]: Counterexample is feasible [2022-03-18 02:59:36,665 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-18 02:59:36,694 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-18 02:59:36,892 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 [2022-03-18 02:59:36,895 INFO L718 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2] [2022-03-18 02:59:36,897 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-18 02:59:36,905 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.03 02:59:36 BoogieIcfgContainer [2022-03-18 02:59:36,905 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-18 02:59:36,905 INFO L158 Benchmark]: Toolchain (without parser) took 2293.91ms. Allocated memory was 205.5MB in the beginning and 287.3MB in the end (delta: 81.8MB). Free memory was 151.3MB in the beginning and 258.3MB in the end (delta: -107.0MB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-18 02:59:36,906 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 205.5MB. Free memory is still 167.7MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-18 02:59:36,906 INFO L158 Benchmark]: CACSL2BoogieTranslator took 223.56ms. Allocated memory is still 205.5MB. Free memory was 151.1MB in the beginning and 181.5MB in the end (delta: -30.3MB). Peak memory consumption was 10.2MB. Max. memory is 8.0GB. [2022-03-18 02:59:36,906 INFO L158 Benchmark]: Boogie Preprocessor took 21.54ms. Allocated memory is still 205.5MB. Free memory was 181.5MB in the beginning and 179.9MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-18 02:59:36,906 INFO L158 Benchmark]: RCFGBuilder took 299.30ms. Allocated memory is still 205.5MB. Free memory was 179.9MB in the beginning and 170.0MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-03-18 02:59:36,907 INFO L158 Benchmark]: TraceAbstraction took 1744.37ms. Allocated memory was 205.5MB in the beginning and 287.3MB in the end (delta: 81.8MB). Free memory was 169.5MB in the beginning and 258.3MB in the end (delta: -88.8MB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-18 02:59:36,912 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 205.5MB. Free memory is still 167.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 223.56ms. Allocated memory is still 205.5MB. Free memory was 151.1MB in the beginning and 181.5MB in the end (delta: -30.3MB). Peak memory consumption was 10.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 21.54ms. Allocated memory is still 205.5MB. Free memory was 181.5MB in the beginning and 179.9MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 299.30ms. Allocated memory is still 205.5MB. Free memory was 179.9MB in the beginning and 170.0MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 1744.37ms. Allocated memory was 205.5MB in the beginning and 287.3MB in the end (delta: 81.8MB). Free memory was 169.5MB in the beginning and 258.3MB in the end (delta: -88.8MB). There was no memory consumed. 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 - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L22] int counter = 0; [L24] unsigned int z, k; [L25] long long x, y, c; [L26] z = __VERIFIER_nondet_uint() [L27] k = __VERIFIER_nondet_uint() [L29] x = 1 [L30] y = z [L31] c = 1 [L33] EXPR counter++ [L33] COND TRUE counter++<5 [L34] CALL __VERIFIER_assert(x*z - x - y + 1 == 0) [L16] COND FALSE !(!(cond)) [L34] RET __VERIFIER_assert(x*z - x - y + 1 == 0) [L36] COND TRUE !(c < k) [L45] x = x * (z - 1) [L47] CALL __VERIFIER_assert(1 + x - y == 0) [L16] COND TRUE !(cond) [L18] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.7s, OverallIterations: 4, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 14 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 13 mSDsluCounter, 137 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 79 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 40 IncrementalHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 58 mSDtfsCounter, 40 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=2, InterpolantAutomatonStates: 12, 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, 3 MinimizatonAttempts, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, 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 RESULT: Ultimate proved your program to be incorrect! [2022-03-18 02:59:36,941 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...