/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain IntervalDomain -i ../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_unwindbound1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 23:27:32,871 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 23:27:32,873 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 23:27:32,904 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-03-31 23:27:32,905 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-03-31 23:27:32,907 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-03-31 23:27:32,909 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-03-31 23:27:32,910 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-03-31 23:27:32,911 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-03-31 23:27:32,915 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-03-31 23:27:32,916 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-03-31 23:27:32,917 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-03-31 23:27:32,918 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 23:27:32,920 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 23:27:32,920 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 23:27:32,921 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 23:27:32,922 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 23:27:32,922 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 23:27:32,923 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 23:27:32,927 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 23:27:32,928 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 23:27:32,929 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 23:27:32,929 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 23:27:32,930 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 23:27:32,936 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-03-31 23:27:32,939 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-03-31 23:27:32,939 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-03-31 23:27:32,940 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-03-31 23:27:32,941 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-03-31 23:27:32,941 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-03-31 23:27:32,941 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-03-31 23:27:32,941 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-03-31 23:27:32,942 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-03-31 23:27:32,942 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 23:27:32,942 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 23:27:32,943 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 23:27:32,944 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-03-31 23:27:32,966 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 23:27:32,966 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 23:27:32,967 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 23:27:32,967 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 23:27:32,967 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 23:27:32,967 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 23:27:32,968 INFO L138 SettingsManager]: * User list type=DISABLED [2023-03-31 23:27:32,968 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-03-31 23:27:32,968 INFO L138 SettingsManager]: * Explicit value domain=true [2023-03-31 23:27:32,968 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-03-31 23:27:32,968 INFO L138 SettingsManager]: * Octagon Domain=false [2023-03-31 23:27:32,968 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-03-31 23:27:32,969 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-03-31 23:27:32,969 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-03-31 23:27:32,969 INFO L138 SettingsManager]: * Interval Domain=false [2023-03-31 23:27:32,969 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-03-31 23:27:32,969 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-03-31 23:27:32,969 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-03-31 23:27:32,969 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 23:27:32,969 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 23:27:32,970 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 23:27:32,970 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 23:27:32,970 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 23:27:32,970 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 23:27:32,970 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 23:27:32,970 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 23:27:32,970 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 23:27:32,970 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 23:27:32,970 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 23:27:32,970 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 23:27:32,970 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 23:27:32,971 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 23:27:32,971 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 23:27:32,971 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 23:27:32,971 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-03-31 23:27:32,971 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 23:27:32,971 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 23:27:32,971 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-03-31 23:27:32,971 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 23:27:32,971 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 23:27:32,971 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-03-31 23:27:32,971 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> IntervalDomain [2023-03-31 23:27:33,156 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 23:27:33,169 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 23:27:33,170 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 23:27:33,171 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 23:27:33,171 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 23:27:33,172 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_unwindbound1.c [2023-03-31 23:27:34,408 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 23:27:34,595 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 23:27:34,596 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/ps4-ll_unwindbound1.c [2023-03-31 23:27:34,600 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e094483c8/58f48acee526441bbdcfcbce1f320e41/FLAG38ab60c69 [2023-03-31 23:27:34,610 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e094483c8/58f48acee526441bbdcfcbce1f320e41 [2023-03-31 23:27:34,612 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 23:27:34,613 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 23:27:34,615 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 23:27:34,615 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 23:27:34,617 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 23:27:34,617 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 11:27:34" (1/1) ... [2023-03-31 23:27:34,618 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c3c38f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:27:34, skipping insertion in model container [2023-03-31 23:27:34,619 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 11:27:34" (1/1) ... [2023-03-31 23:27:34,623 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 23:27:34,633 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 23:27:34,741 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/ps4-ll_unwindbound1.c[458,471] [2023-03-31 23:27:34,753 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 23:27:34,760 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 23:27:34,768 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/ps4-ll_unwindbound1.c[458,471] [2023-03-31 23:27:34,778 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 23:27:34,787 INFO L208 MainTranslator]: Completed translation [2023-03-31 23:27:34,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:27:34 WrapperNode [2023-03-31 23:27:34,787 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 23:27:34,788 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 23:27:34,788 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 23:27:34,788 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 23:27:34,795 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:27:34" (1/1) ... [2023-03-31 23:27:34,795 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:27:34" (1/1) ... [2023-03-31 23:27:34,798 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:27:34" (1/1) ... [2023-03-31 23:27:34,799 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:27:34" (1/1) ... [2023-03-31 23:27:34,806 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:27:34" (1/1) ... [2023-03-31 23:27:34,808 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:27:34" (1/1) ... [2023-03-31 23:27:34,809 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:27:34" (1/1) ... [2023-03-31 23:27:34,810 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:27:34" (1/1) ... [2023-03-31 23:27:34,813 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 23:27:34,814 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 23:27:34,814 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 23:27:34,814 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 23:27:34,815 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:27:34" (1/1) ... [2023-03-31 23:27:34,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 23:27:34,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 23:27:34,846 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-03-31 23:27:34,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-03-31 23:27:34,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 23:27:34,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 23:27:34,876 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 23:27:34,876 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-03-31 23:27:34,876 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-03-31 23:27:34,876 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 23:27:34,877 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 23:27:34,877 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 23:27:34,877 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 23:27:34,877 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 23:27:34,877 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_short [2023-03-31 23:27:34,877 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-03-31 23:27:34,877 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-03-31 23:27:34,877 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 23:27:34,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 23:27:34,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 23:27:34,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 23:27:34,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 23:27:34,878 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 23:27:34,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 23:27:34,924 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 23:27:34,925 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 23:27:35,078 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 23:27:35,095 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 23:27:35,095 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-03-31 23:27:35,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 11:27:35 BoogieIcfgContainer [2023-03-31 23:27:35,097 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 23:27:35,115 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 23:27:35,115 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 23:27:35,117 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 23:27:35,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 11:27:34" (1/3) ... [2023-03-31 23:27:35,118 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c2d7c3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 11:27:35, skipping insertion in model container [2023-03-31 23:27:35,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:27:34" (2/3) ... [2023-03-31 23:27:35,118 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c2d7c3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 11:27:35, skipping insertion in model container [2023-03-31 23:27:35,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 11:27:35" (3/3) ... [2023-03-31 23:27:35,119 INFO L112 eAbstractionObserver]: Analyzing ICFG ps4-ll_unwindbound1.c [2023-03-31 23:27:35,132 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 23:27:35,132 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-31 23:27:35,166 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 23:27:35,170 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@15492e74, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-03-31 23:27:35,170 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-31 23:27:35,173 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-03-31 23:27:35,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-03-31 23:27:35,177 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:27:35,178 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 23:27:35,178 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:27:35,181 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:27:35,182 INFO L85 PathProgramCache]: Analyzing trace with hash 495452527, now seen corresponding path program 1 times [2023-03-31 23:27:35,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:27:35,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945981759] [2023-03-31 23:27:35,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:27:35,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:27:35,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:27:35,296 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:27:35,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945981759] [2023-03-31 23:27:35,303 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-03-31 23:27:35,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [473116567] [2023-03-31 23:27:35,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:27:35,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 23:27:35,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 23:27:35,306 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-31 23:27:35,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-03-31 23:27:35,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:27:35,353 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 1 conjunts are in the unsatisfiable core [2023-03-31 23:27:35,355 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 23:27:35,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 23:27:35,370 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-31 23:27:35,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [473116567] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 23:27:35,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 23:27:35,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-03-31 23:27:35,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779167412] [2023-03-31 23:27:35,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 23:27:35,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-03-31 23:27:35,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:27:35,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-03-31 23:27:35,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-03-31 23:27:35,394 INFO L87 Difference]: Start difference. First operand has 21 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2023-03-31 23:27:35,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:27:35,410 INFO L93 Difference]: Finished difference Result 37 states and 50 transitions. [2023-03-31 23:27:35,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-03-31 23:27:35,411 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 10 [2023-03-31 23:27:35,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:27:35,416 INFO L225 Difference]: With dead ends: 37 [2023-03-31 23:27:35,416 INFO L226 Difference]: Without dead ends: 17 [2023-03-31 23:27:35,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-03-31 23:27:35,421 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-03-31 23:27:35,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 22 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-03-31 23:27:35,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2023-03-31 23:27:35,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2023-03-31 23:27:35,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-03-31 23:27:35,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2023-03-31 23:27:35,443 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 10 [2023-03-31 23:27:35,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:27:35,443 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2023-03-31 23:27:35,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2023-03-31 23:27:35,444 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2023-03-31 23:27:35,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-03-31 23:27:35,444 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:27:35,444 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 23:27:35,466 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-03-31 23:27:35,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-03-31 23:27:35,650 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:27:35,653 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:27:35,653 INFO L85 PathProgramCache]: Analyzing trace with hash 2070932154, now seen corresponding path program 1 times [2023-03-31 23:27:35,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:27:35,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375818766] [2023-03-31 23:27:35,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:27:35,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:27:35,675 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-03-31 23:27:35,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1163134827] [2023-03-31 23:27:35,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:27:35,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 23:27:35,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 23:27:35,686 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-31 23:27:35,713 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-03-31 23:27:35,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:27:35,764 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 5 conjunts are in the unsatisfiable core [2023-03-31 23:27:35,765 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 23:27:35,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 23:27:35,822 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-31 23:27:35,823 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:27:35,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375818766] [2023-03-31 23:27:35,826 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-03-31 23:27:35,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1163134827] [2023-03-31 23:27:35,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1163134827] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 23:27:35,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 23:27:35,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 23:27:35,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349601869] [2023-03-31 23:27:35,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 23:27:35,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 23:27:35,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:27:35,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 23:27:35,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 23:27:35,831 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 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) [2023-03-31 23:27:35,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:27:35,850 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2023-03-31 23:27:35,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-03-31 23:27:35,851 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 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 11 [2023-03-31 23:27:35,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:27:35,852 INFO L225 Difference]: With dead ends: 27 [2023-03-31 23:27:35,852 INFO L226 Difference]: Without dead ends: 19 [2023-03-31 23:27:35,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 23:27:35,853 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-03-31 23:27:35,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 47 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-03-31 23:27:35,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2023-03-31 23:27:35,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2023-03-31 23:27:35,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-03-31 23:27:35,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2023-03-31 23:27:35,863 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 11 [2023-03-31 23:27:35,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:27:35,863 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2023-03-31 23:27:35,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 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) [2023-03-31 23:27:35,864 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2023-03-31 23:27:35,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-03-31 23:27:35,864 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:27:35,864 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 23:27:35,881 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-03-31 23:27:36,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-03-31 23:27:36,070 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:27:36,071 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:27:36,071 INFO L85 PathProgramCache]: Analyzing trace with hash 2072719614, now seen corresponding path program 1 times [2023-03-31 23:27:36,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:27:36,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119107984] [2023-03-31 23:27:36,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:27:36,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:27:36,095 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-03-31 23:27:36,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [236378649] [2023-03-31 23:27:36,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:27:36,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 23:27:36,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 23:27:36,100 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-31 23:27:36,141 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-03-31 23:27:36,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:27:36,150 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 10 conjunts are in the unsatisfiable core [2023-03-31 23:27:36,151 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 23:27:36,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 23:27:36,182 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-31 23:27:36,182 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:27:36,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119107984] [2023-03-31 23:27:36,182 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-03-31 23:27:36,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [236378649] [2023-03-31 23:27:36,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [236378649] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 23:27:36,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 23:27:36,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 23:27:36,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998872767] [2023-03-31 23:27:36,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 23:27:36,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-31 23:27:36,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:27:36,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-31 23:27:36,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-03-31 23:27:36,184 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 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) [2023-03-31 23:27:36,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:27:36,220 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2023-03-31 23:27:36,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 23:27:36,220 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 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 11 [2023-03-31 23:27:36,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:27:36,222 INFO L225 Difference]: With dead ends: 29 [2023-03-31 23:27:36,222 INFO L226 Difference]: Without dead ends: 25 [2023-03-31 23:27:36,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-03-31 23:27:36,223 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 6 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-03-31 23:27:36,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 53 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-03-31 23:27:36,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-03-31 23:27:36,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2023-03-31 23:27:36,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-03-31 23:27:36,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2023-03-31 23:27:36,233 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 11 [2023-03-31 23:27:36,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:27:36,233 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2023-03-31 23:27:36,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 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) [2023-03-31 23:27:36,233 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2023-03-31 23:27:36,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-03-31 23:27:36,234 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:27:36,234 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 23:27:36,239 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-03-31 23:27:36,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 23:27:36,439 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:27:36,439 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:27:36,439 INFO L85 PathProgramCache]: Analyzing trace with hash -2014102531, now seen corresponding path program 1 times [2023-03-31 23:27:36,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:27:36,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913780868] [2023-03-31 23:27:36,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:27:36,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:27:36,449 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-03-31 23:27:36,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [396024385] [2023-03-31 23:27:36,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:27:36,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 23:27:36,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 23:27:36,451 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-31 23:27:36,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-03-31 23:27:36,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-03-31 23:27:36,487 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-03-31 23:27:36,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-03-31 23:27:36,522 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-03-31 23:27:36,522 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-03-31 23:27:36,523 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-03-31 23:27:36,531 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-03-31 23:27:36,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 23:27:36,731 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-03-31 23:27:36,734 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-03-31 23:27:36,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.03 11:27:36 BoogieIcfgContainer [2023-03-31 23:27:36,755 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-03-31 23:27:36,755 INFO L158 Benchmark]: Toolchain (without parser) took 2142.89ms. Allocated memory is still 308.3MB. Free memory was 264.2MB in the beginning and 182.9MB in the end (delta: 81.3MB). Peak memory consumption was 80.7MB. Max. memory is 8.0GB. [2023-03-31 23:27:36,755 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 205.5MB. Free memory is still 158.5MB. There was no memory consumed. Max. memory is 8.0GB. [2023-03-31 23:27:36,756 INFO L158 Benchmark]: CACSL2BoogieTranslator took 172.55ms. Allocated memory is still 308.3MB. Free memory was 264.2MB in the beginning and 253.7MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-03-31 23:27:36,756 INFO L158 Benchmark]: Boogie Preprocessor took 25.63ms. Allocated memory is still 308.3MB. Free memory was 253.7MB in the beginning and 252.2MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-03-31 23:27:36,756 INFO L158 Benchmark]: RCFGBuilder took 285.89ms. Allocated memory is still 308.3MB. Free memory was 252.2MB in the beginning and 240.1MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-03-31 23:27:36,756 INFO L158 Benchmark]: TraceAbstraction took 1640.50ms. Allocated memory is still 308.3MB. Free memory was 239.6MB in the beginning and 182.9MB in the end (delta: 56.6MB). Peak memory consumption was 56.6MB. Max. memory is 8.0GB. [2023-03-31 23:27:36,757 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 205.5MB. Free memory is still 158.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 172.55ms. Allocated memory is still 308.3MB. Free memory was 264.2MB in the beginning and 253.7MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 25.63ms. Allocated memory is still 308.3MB. Free memory was 253.7MB in the beginning and 252.2MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 285.89ms. Allocated memory is still 308.3MB. Free memory was 252.2MB in the beginning and 240.1MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 1640.50ms. Allocated memory is still 308.3MB. Free memory was 239.6MB in the beginning and 182.9MB in the end (delta: 56.6MB). Peak memory consumption was 56.6MB. 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: 12]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L17] int counter = 0; [L19] short k; [L20] long long y, x, c; [L21] k = __VERIFIER_nondet_short() [L23] y = 0 [L24] x = 0 [L25] c = 0 VAL [\old(counter)=0, c=0, counter=0, k=2, x=0, y=0] [L27] EXPR counter++ VAL [\old(counter)=0, c=0, counter++=0, counter=1, k=2, x=0, y=0] [L27] COND TRUE counter++<1 [L28] CALL __VERIFIER_assert(4*x - y*y*y*y - 2*y*y*y - y*y == 0) VAL [\old(cond)=1, \old(counter)=0, counter=1] [L10] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=1] [L28] RET __VERIFIER_assert(4*x - y*y*y*y - 2*y*y*y - y*y == 0) VAL [\old(counter)=0, c=0, counter=1, k=2, x=0, y=0] [L30] COND FALSE !(!(c < k)) [L33] c = c + 1 [L34] y = y + 1 [L35] x = y * y * y + x VAL [\old(counter)=0, c=1, counter=1, k=2, x=1, y=1] [L27] EXPR counter++ VAL [\old(counter)=0, c=1, counter++=1, counter=2, k=2, x=1, y=1] [L27] COND FALSE !(counter++<1) [L37] CALL __VERIFIER_assert(k*y - (y*y) == 0) VAL [\old(cond)=0, \old(counter)=0, counter=2] [L10] COND TRUE !(cond) VAL [\old(cond)=0, \old(counter)=0, cond=0, counter=2] [L12] reach_error() VAL [\old(cond)=0, \old(counter)=0, cond=0, counter=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.6s, OverallIterations: 4, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 8 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6 mSDsluCounter, 122 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 67 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 43 IncrementalHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 55 mSDtfsCounter, 43 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=3, InterpolantAutomatonStates: 11, 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: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 61 NumberOfCodeBlocks, 61 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 29 ConstructedInterpolants, 0 QuantifiedInterpolants, 61 SizeOfPredicates, 2 NumberOfNonLiveVariables, 206 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 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 RESULT: Ultimate proved your program to be incorrect! [2023-03-31 23:27:36,778 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...