/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 OctagonDomain -i ../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_unwindbound10.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 23:31:31,755 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 23:31:31,757 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 23:31:31,788 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 23:31:31,788 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 23:31:31,790 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 23:31:31,793 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 23:31:31,795 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 23:31:31,796 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 23:31:31,799 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 23:31:31,801 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 23:31:31,802 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 23:31:31,802 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 23:31:31,804 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 23:31:31,805 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 23:31:31,806 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 23:31:31,806 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 23:31:31,807 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 23:31:31,808 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 23:31:31,812 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 23:31:31,813 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 23:31:31,814 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 23:31:31,814 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 23:31:31,815 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 23:31:31,821 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-02 23:31:31,824 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 23:31:31,824 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 23:31:31,825 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 23:31:31,825 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 23:31:31,826 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 23:31:31,826 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 23:31:31,826 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 23:31:31,826 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 23:31:31,826 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 23:31:31,827 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 23:31:31,827 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 23:31:31,828 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 [2023-04-02 23:31:31,851 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 23:31:31,851 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 23:31:31,851 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 23:31:31,851 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 23:31:31,852 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 23:31:31,852 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 23:31:31,852 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-02 23:31:31,852 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-02 23:31:31,852 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-02 23:31:31,852 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-02 23:31:31,853 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-02 23:31:31,853 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-02 23:31:31,853 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-02 23:31:31,853 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-02 23:31:31,853 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-02 23:31:31,853 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-02 23:31:31,853 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-02 23:31:31,853 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-02 23:31:31,854 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 23:31:31,854 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 23:31:31,854 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 23:31:31,854 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 23:31:31,854 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 23:31:31,854 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 23:31:31,854 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 23:31:31,854 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 23:31:31,855 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 23:31:31,855 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 23:31:31,855 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 23:31:31,855 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 23:31:31,855 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 23:31:31,855 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 23:31:31,855 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 23:31:31,855 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 23:31:31,855 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-02 23:31:31,855 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 23:31:31,855 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 23:31:31,856 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-02 23:31:31,856 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 23:31:31,856 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 23:31:31,856 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-02 23:31:31,856 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-02 23:31:32,022 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 23:31:32,039 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 23:31:32,040 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 23:31:32,041 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 23:31:32,041 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 23:31:32,041 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_unwindbound10.c [2023-04-02 23:31:33,034 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 23:31:33,172 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 23:31:33,173 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/ps6-ll_unwindbound10.c [2023-04-02 23:31:33,176 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e75e2de9/4b213ae21d3b45e5a5cf3b50e75f5d88/FLAG281fdb0d7 [2023-04-02 23:31:33,630 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e75e2de9/4b213ae21d3b45e5a5cf3b50e75f5d88 [2023-04-02 23:31:33,634 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 23:31:33,635 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 23:31:33,638 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 23:31:33,638 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 23:31:33,640 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 23:31:33,640 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 11:31:33" (1/1) ... [2023-04-02 23:31:33,641 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@715fba73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:31:33, skipping insertion in model container [2023-04-02 23:31:33,641 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 11:31:33" (1/1) ... [2023-04-02 23:31:33,646 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 23:31:33,656 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 23:31:33,735 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/ps6-ll_unwindbound10.c[458,471] [2023-04-02 23:31:33,745 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 23:31:33,751 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 23:31:33,758 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/ps6-ll_unwindbound10.c[458,471] [2023-04-02 23:31:33,762 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 23:31:33,769 INFO L208 MainTranslator]: Completed translation [2023-04-02 23:31:33,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:31:33 WrapperNode [2023-04-02 23:31:33,770 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 23:31:33,770 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 23:31:33,770 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 23:31:33,771 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 23:31:33,778 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:31:33" (1/1) ... [2023-04-02 23:31:33,778 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:31:33" (1/1) ... [2023-04-02 23:31:33,781 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:31:33" (1/1) ... [2023-04-02 23:31:33,781 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:31:33" (1/1) ... [2023-04-02 23:31:33,784 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:31:33" (1/1) ... [2023-04-02 23:31:33,786 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:31:33" (1/1) ... [2023-04-02 23:31:33,786 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:31:33" (1/1) ... [2023-04-02 23:31:33,787 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:31:33" (1/1) ... [2023-04-02 23:31:33,788 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 23:31:33,788 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 23:31:33,788 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 23:31:33,788 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 23:31:33,789 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:31:33" (1/1) ... [2023-04-02 23:31:33,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 23:31:33,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 23:31:33,807 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-02 23:31:33,808 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-02 23:31:33,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 23:31:33,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 23:31:33,830 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 23:31:33,830 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-02 23:31:33,830 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-04-02 23:31:33,830 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 23:31:33,830 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 23:31:33,830 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 23:31:33,830 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 23:31:33,830 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 23:31:33,831 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_short [2023-04-02 23:31:33,831 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-02 23:31:33,831 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-04-02 23:31:33,831 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 23:31:33,831 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 23:31:33,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 23:31:33,831 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 23:31:33,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 23:31:33,831 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 23:31:33,831 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 23:31:33,873 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 23:31:33,874 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 23:31:34,024 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 23:31:34,058 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 23:31:34,058 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-02 23:31:34,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 11:31:34 BoogieIcfgContainer [2023-04-02 23:31:34,060 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 23:31:34,061 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 23:31:34,061 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 23:31:34,063 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 23:31:34,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 11:31:33" (1/3) ... [2023-04-02 23:31:34,064 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12245a5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 11:31:34, skipping insertion in model container [2023-04-02 23:31:34,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:31:33" (2/3) ... [2023-04-02 23:31:34,064 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12245a5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 11:31:34, skipping insertion in model container [2023-04-02 23:31:34,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 11:31:34" (3/3) ... [2023-04-02 23:31:34,077 INFO L112 eAbstractionObserver]: Analyzing ICFG ps6-ll_unwindbound10.c [2023-04-02 23:31:34,102 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 23:31:34,102 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 23:31:34,145 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 23:31:34,154 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;@4609f8cd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-02 23:31:34,154 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 23:31:34,157 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-04-02 23:31:34,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-04-02 23:31:34,161 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:31:34,162 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:31:34,162 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:31:34,165 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:31:34,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1588681703, now seen corresponding path program 1 times [2023-04-02 23:31:34,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:31:34,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402762585] [2023-04-02 23:31:34,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:31:34,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:31:34,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:31:34,252 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:31:34,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402762585] [2023-04-02 23:31:34,253 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-04-02 23:31:34,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [281301863] [2023-04-02 23:31:34,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:31:34,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:31:34,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 23:31:34,256 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 23:31:34,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-02 23:31:34,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:31:34,318 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 1 conjunts are in the unsatisfiable core [2023-04-02 23:31:34,321 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 23:31:34,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 23:31:34,336 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 23:31:34,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [281301863] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:31:34,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 23:31:34,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-04-02 23:31:34,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431771258] [2023-04-02 23:31:34,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:31:34,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-04-02 23:31:34,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:31:34,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-04-02 23:31:34,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-02 23:31:34,364 INFO L87 Difference]: Start difference. First operand has 25 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-02 23:31:34,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:31:34,390 INFO L93 Difference]: Finished difference Result 41 states and 54 transitions. [2023-04-02 23:31:34,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-04-02 23:31:34,392 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 14 [2023-04-02 23:31:34,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:31:34,396 INFO L225 Difference]: With dead ends: 41 [2023-04-02 23:31:34,396 INFO L226 Difference]: Without dead ends: 21 [2023-04-02 23:31:34,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-02 23:31:34,400 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-02 23:31:34,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 25 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 23:31:34,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2023-04-02 23:31:34,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2023-04-02 23:31:34,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 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) [2023-04-02 23:31:34,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2023-04-02 23:31:34,428 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 14 [2023-04-02 23:31:34,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:31:34,428 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2023-04-02 23:31:34,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-02 23:31:34,429 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2023-04-02 23:31:34,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-04-02 23:31:34,429 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:31:34,429 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:31:34,444 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-02 23:31:34,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-04-02 23:31:34,635 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:31:34,637 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:31:34,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1599510784, now seen corresponding path program 1 times [2023-04-02 23:31:34,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:31:34,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768771808] [2023-04-02 23:31:34,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:31:34,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:31:34,653 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 23:31:34,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [137606693] [2023-04-02 23:31:34,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:31:34,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:31:34,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 23:31:34,654 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 23:31:34,656 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-02 23:31:34,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:31:34,704 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 5 conjunts are in the unsatisfiable core [2023-04-02 23:31:34,706 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 23:31:34,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 23:31:34,748 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 23:31:34,748 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:31:34,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768771808] [2023-04-02 23:31:34,749 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 23:31:34,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [137606693] [2023-04-02 23:31:34,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [137606693] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:31:34,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 23:31:34,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 23:31:34,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295877441] [2023-04-02 23:31:34,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:31:34,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 23:31:34,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:31:34,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 23:31:34,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 23:31:34,751 INFO L87 Difference]: Start difference. First operand 21 states and 24 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, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-02 23:31:34,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:31:34,764 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2023-04-02 23:31:34,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 23:31:34,765 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, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 15 [2023-04-02 23:31:34,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:31:34,766 INFO L225 Difference]: With dead ends: 31 [2023-04-02 23:31:34,766 INFO L226 Difference]: Without dead ends: 23 [2023-04-02 23:31:34,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 23:31:34,770 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-02 23:31:34,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 53 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 23:31:34,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-04-02 23:31:34,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2023-04-02 23:31:34,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 14 states have internal predecessors, (16), 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) [2023-04-02 23:31:34,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2023-04-02 23:31:34,774 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 15 [2023-04-02 23:31:34,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:31:34,775 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2023-04-02 23:31:34,775 INFO L496 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, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-02 23:31:34,775 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2023-04-02 23:31:34,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-04-02 23:31:34,775 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:31:34,775 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:31:34,780 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-04-02 23:31:34,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-04-02 23:31:34,981 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:31:34,982 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:31:34,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1601298244, now seen corresponding path program 1 times [2023-04-02 23:31:34,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:31:34,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743920645] [2023-04-02 23:31:34,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:31:34,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:31:34,999 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 23:31:34,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [356385264] [2023-04-02 23:31:34,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:31:34,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:31:35,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 23:31:35,005 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 23:31:35,034 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-02 23:31:35,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:31:35,059 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 15 conjunts are in the unsatisfiable core [2023-04-02 23:31:35,061 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 23:31:35,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 23:31:35,120 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 23:31:35,120 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:31:35,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743920645] [2023-04-02 23:31:35,120 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 23:31:35,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356385264] [2023-04-02 23:31:35,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [356385264] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:31:35,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 23:31:35,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 23:31:35,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624431361] [2023-04-02 23:31:35,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:31:35,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 23:31:35,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:31:35,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 23:31:35,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 23:31:35,122 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-02 23:31:35,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:31:35,170 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2023-04-02 23:31:35,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-02 23:31:35,171 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 15 [2023-04-02 23:31:35,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:31:35,171 INFO L225 Difference]: With dead ends: 33 [2023-04-02 23:31:35,171 INFO L226 Difference]: Without dead ends: 29 [2023-04-02 23:31:35,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-04-02 23:31:35,173 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 6 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-02 23:31:35,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 74 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 23:31:35,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-04-02 23:31:35,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2023-04-02 23:31:35,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 18 states have internal predecessors, (20), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-04-02 23:31:35,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2023-04-02 23:31:35,178 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 15 [2023-04-02 23:31:35,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:31:35,178 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2023-04-02 23:31:35,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-02 23:31:35,178 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2023-04-02 23:31:35,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-04-02 23:31:35,179 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:31:35,179 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:31:35,195 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-04-02 23:31:35,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:31:35,383 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:31:35,384 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:31:35,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1088104383, now seen corresponding path program 1 times [2023-04-02 23:31:35,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:31:35,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232616255] [2023-04-02 23:31:35,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:31:35,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:31:35,394 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 23:31:35,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2079496410] [2023-04-02 23:31:35,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:31:35,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:31:35,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 23:31:35,406 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 23:31:35,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-04-02 23:31:35,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:31:35,442 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 7 conjunts are in the unsatisfiable core [2023-04-02 23:31:35,443 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 23:31:35,473 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 23:31:35,473 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 23:31:35,512 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 23:31:35,513 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:31:35,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232616255] [2023-04-02 23:31:35,513 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 23:31:35,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2079496410] [2023-04-02 23:31:35,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2079496410] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 23:31:35,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [59448609] [2023-04-02 23:31:35,524 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2023-04-02 23:31:35,524 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 23:31:35,526 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 23:31:35,529 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 23:31:35,529 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 23:31:35,575 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 13 for LOIs [2023-04-02 23:31:36,045 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-04-02 23:31:36,048 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 28 for LOIs [2023-04-02 23:31:36,054 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2023-04-02 23:31:36,059 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 23:31:36,491 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '570#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-04-02 23:31:36,491 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 23:31:36,492 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-02 23:31:36,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-04-02 23:31:36,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387316893] [2023-04-02 23:31:36,492 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-02 23:31:36,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 23:31:36,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:31:36,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 23:31:36,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=454, Unknown=0, NotChecked=0, Total=552 [2023-04-02 23:31:36,493 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 6 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2023-04-02 23:31:36,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:31:36,632 INFO L93 Difference]: Finished difference Result 63 states and 73 transitions. [2023-04-02 23:31:36,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-02 23:31:36,633 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 6 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) Word has length 23 [2023-04-02 23:31:36,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:31:36,634 INFO L225 Difference]: With dead ends: 63 [2023-04-02 23:31:36,634 INFO L226 Difference]: Without dead ends: 55 [2023-04-02 23:31:36,634 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=118, Invalid=584, Unknown=0, NotChecked=0, Total=702 [2023-04-02 23:31:36,635 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 23 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 23:31:36,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 99 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 23:31:36,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2023-04-02 23:31:36,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 51. [2023-04-02 23:31:36,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 31 states have (on average 1.2258064516129032) internal successors, (38), 34 states have internal predecessors, (38), 13 states have call successors, (13), 7 states have call predecessors, (13), 6 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-04-02 23:31:36,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 60 transitions. [2023-04-02 23:31:36,641 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 60 transitions. Word has length 23 [2023-04-02 23:31:36,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:31:36,641 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 60 transitions. [2023-04-02 23:31:36,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 6 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2023-04-02 23:31:36,641 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 60 transitions. [2023-04-02 23:31:36,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-04-02 23:31:36,642 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:31:36,642 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:31:36,663 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-04-02 23:31:36,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:31:36,850 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:31:36,850 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:31:36,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1089891843, now seen corresponding path program 1 times [2023-04-02 23:31:36,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:31:36,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101472532] [2023-04-02 23:31:36,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:31:36,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:31:36,870 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 23:31:36,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1221450688] [2023-04-02 23:31:36,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:31:36,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:31:36,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 23:31:36,882 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 23:31:36,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-04-02 23:31:36,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:31:36,920 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 19 conjunts are in the unsatisfiable core [2023-04-02 23:31:36,926 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 23:31:36,971 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 23:31:36,971 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 23:31:37,041 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 23:31:37,042 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:31:37,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101472532] [2023-04-02 23:31:37,042 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 23:31:37,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1221450688] [2023-04-02 23:31:37,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1221450688] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 23:31:37,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [13533797] [2023-04-02 23:31:37,044 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2023-04-02 23:31:37,045 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 23:31:37,045 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 23:31:37,045 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 23:31:37,045 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 23:31:37,068 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 13 for LOIs [2023-04-02 23:31:37,366 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 83 for LOIs [2023-04-02 23:31:37,486 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 28 for LOIs [2023-04-02 23:31:37,489 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2023-04-02 23:31:37,492 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 23:31:38,249 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '905#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0) (exists ((v_main_~y~0_BEFORE_CALL_23 Int) (|v_old(~counter~0)_BEFORE_CALL_24| Int) (v_main_~c~0_BEFORE_CALL_19 Int) (v_main_~k~0_BEFORE_CALL_24 Int) (v_main_~x~0_BEFORE_CALL_23 Int)) (and (exists ((|v_main_#t~post5_21| Int)) (and (< |v_main_#t~post5_21| 10) (or (and (<= 0 (+ |#StackHeapBarrier| 32767 v_main_~k~0_BEFORE_CALL_24)) (<= v_main_~c~0_BEFORE_CALL_19 33025) (<= 1 |#StackHeapBarrier|) (<= 0 (+ v_main_~c~0_BEFORE_CALL_19 32767 v_main_~k~0_BEFORE_CALL_24)) (<= v_main_~c~0_BEFORE_CALL_19 v_main_~k~0_BEFORE_CALL_24) (= ~counter~0 (+ |v_main_#t~post5_21| 1)) (<= 2 (+ v_main_~c~0_BEFORE_CALL_19 |#StackHeapBarrier|)) (= v_main_~y~0_BEFORE_CALL_23 v_main_~c~0_BEFORE_CALL_19) (<= v_main_~c~0_BEFORE_CALL_19 (+ 33024 |#StackHeapBarrier|)) (<= 0 (+ v_main_~k~0_BEFORE_CALL_24 32768)) (<= v_main_~k~0_BEFORE_CALL_24 (+ 255 v_main_~c~0_BEFORE_CALL_19)) (= |v_old(~counter~0)_BEFORE_CALL_24| 0) (= |v_main_#t~post5_21| v_main_~c~0_BEFORE_CALL_19) (<= 1 v_main_~c~0_BEFORE_CALL_19) (<= v_main_~k~0_BEFORE_CALL_24 (+ 255 |#StackHeapBarrier|)) (= |#NULL.offset| 0) (<= (+ v_main_~c~0_BEFORE_CALL_19 v_main_~k~0_BEFORE_CALL_24) 33281) (<= v_main_~k~0_BEFORE_CALL_24 256) (= |#NULL.base| 0)) (and (<= 1 |#StackHeapBarrier|) (= |v_main_#t~post5_21| 0) (= v_main_~y~0_BEFORE_CALL_23 0) (<= 0 (+ v_main_~k~0_BEFORE_CALL_24 32768)) (= |v_old(~counter~0)_BEFORE_CALL_24| 0) (= v_main_~x~0_BEFORE_CALL_23 0) (= |#NULL.offset| 0) (= ~counter~0 1) (= v_main_~c~0_BEFORE_CALL_19 0) (<= v_main_~k~0_BEFORE_CALL_24 256) (= |#NULL.base| 0))))) (not (= (+ (* (* v_main_~y~0_BEFORE_CALL_23 v_main_~y~0_BEFORE_CALL_23 v_main_~y~0_BEFORE_CALL_23 v_main_~y~0_BEFORE_CALL_23 v_main_~y~0_BEFORE_CALL_23 v_main_~y~0_BEFORE_CALL_23) 2) (* 5 (* v_main_~y~0_BEFORE_CALL_23 v_main_~y~0_BEFORE_CALL_23 v_main_~y~0_BEFORE_CALL_23 v_main_~y~0_BEFORE_CALL_23)) (* 6 (* v_main_~y~0_BEFORE_CALL_23 v_main_~y~0_BEFORE_CALL_23 v_main_~y~0_BEFORE_CALL_23 v_main_~y~0_BEFORE_CALL_23 v_main_~y~0_BEFORE_CALL_23))) (+ (* v_main_~x~0_BEFORE_CALL_23 12) (* v_main_~y~0_BEFORE_CALL_23 v_main_~y~0_BEFORE_CALL_23)))))))' at error location [2023-04-02 23:31:38,249 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 23:31:38,249 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-02 23:31:38,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 11 [2023-04-02 23:31:38,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073797924] [2023-04-02 23:31:38,250 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-02 23:31:38,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-02 23:31:38,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:31:38,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-02 23:31:38,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=617, Unknown=0, NotChecked=0, Total=702 [2023-04-02 23:31:38,251 INFO L87 Difference]: Start difference. First operand 51 states and 60 transitions. Second operand has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 10 states have internal predecessors, (25), 4 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-04-02 23:31:38,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:31:38,335 INFO L93 Difference]: Finished difference Result 65 states and 73 transitions. [2023-04-02 23:31:38,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-02 23:31:38,336 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 10 states have internal predecessors, (25), 4 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 23 [2023-04-02 23:31:38,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:31:38,336 INFO L225 Difference]: With dead ends: 65 [2023-04-02 23:31:38,337 INFO L226 Difference]: Without dead ends: 57 [2023-04-02 23:31:38,337 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=102, Invalid=710, Unknown=0, NotChecked=0, Total=812 [2023-04-02 23:31:38,338 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 19 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-02 23:31:38,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 84 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 23:31:38,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2023-04-02 23:31:38,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 51. [2023-04-02 23:31:38,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 33 states have (on average 1.121212121212121) internal successors, (37), 35 states have internal predecessors, (37), 11 states have call successors, (11), 8 states have call predecessors, (11), 6 states have return successors, (9), 7 states have call predecessors, (9), 9 states have call successors, (9) [2023-04-02 23:31:38,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 57 transitions. [2023-04-02 23:31:38,345 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 57 transitions. Word has length 23 [2023-04-02 23:31:38,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:31:38,346 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 57 transitions. [2023-04-02 23:31:38,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 10 states have internal predecessors, (25), 4 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-04-02 23:31:38,346 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 57 transitions. [2023-04-02 23:31:38,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-04-02 23:31:38,346 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:31:38,346 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:31:38,365 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-04-02 23:31:38,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:31:38,551 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:31:38,551 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:31:38,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1030500817, now seen corresponding path program 1 times [2023-04-02 23:31:38,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:31:38,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992002466] [2023-04-02 23:31:38,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:31:38,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:31:38,559 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 23:31:38,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [43420639] [2023-04-02 23:31:38,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:31:38,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:31:38,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 23:31:38,568 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 23:31:38,570 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-04-02 23:31:38,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:31:38,604 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 20 conjunts are in the unsatisfiable core [2023-04-02 23:31:38,605 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 23:31:38,684 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-04-02 23:31:38,684 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 23:31:42,729 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse0 (* c_main_~y~0 c_main_~y~0))) (or (= (* c_main_~y~0 c_main_~k~0) .cse0) (not (= (mod (+ (* 10 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0) (* 7 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0) (* 6 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0) .cse0) 12) 0)))) is different from false [2023-04-02 23:32:01,080 WARN L861 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 0)) (forall ((v_main_~k~0_BEFORE_CALL_29 Int) (v_main_~y~0_BEFORE_CALL_28 Int)) (let ((.cse0 (* v_main_~y~0_BEFORE_CALL_28 v_main_~y~0_BEFORE_CALL_28))) (or (= (mod (+ .cse0 (* 7 v_main_~y~0_BEFORE_CALL_28 v_main_~y~0_BEFORE_CALL_28 v_main_~y~0_BEFORE_CALL_28 v_main_~y~0_BEFORE_CALL_28) (* v_main_~y~0_BEFORE_CALL_28 v_main_~y~0_BEFORE_CALL_28 v_main_~y~0_BEFORE_CALL_28 v_main_~y~0_BEFORE_CALL_28 v_main_~y~0_BEFORE_CALL_28 v_main_~y~0_BEFORE_CALL_28 10) (* v_main_~y~0_BEFORE_CALL_28 v_main_~y~0_BEFORE_CALL_28 v_main_~y~0_BEFORE_CALL_28 v_main_~y~0_BEFORE_CALL_28 v_main_~y~0_BEFORE_CALL_28 6)) 12) 0) (= (* v_main_~y~0_BEFORE_CALL_28 v_main_~k~0_BEFORE_CALL_29) .cse0))))) is different from true [2023-04-02 23:32:19,135 WARN L861 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 0)) (forall ((v_main_~k~0_BEFORE_CALL_29 Int) (v_main_~y~0_BEFORE_CALL_28 Int)) (let ((.cse0 (* v_main_~y~0_BEFORE_CALL_28 v_main_~y~0_BEFORE_CALL_28))) (or (= (mod (+ .cse0 (* 7 v_main_~y~0_BEFORE_CALL_28 v_main_~y~0_BEFORE_CALL_28 v_main_~y~0_BEFORE_CALL_28 v_main_~y~0_BEFORE_CALL_28) (* v_main_~y~0_BEFORE_CALL_28 v_main_~y~0_BEFORE_CALL_28 v_main_~y~0_BEFORE_CALL_28 v_main_~y~0_BEFORE_CALL_28 v_main_~y~0_BEFORE_CALL_28 v_main_~y~0_BEFORE_CALL_28 10) (* v_main_~y~0_BEFORE_CALL_28 v_main_~y~0_BEFORE_CALL_28 v_main_~y~0_BEFORE_CALL_28 v_main_~y~0_BEFORE_CALL_28 v_main_~y~0_BEFORE_CALL_28 6)) 12) 0) (= (* v_main_~y~0_BEFORE_CALL_28 v_main_~k~0_BEFORE_CALL_29) .cse0)))) (= c___VERIFIER_assert_~cond 0)) is different from true [2023-04-02 23:32:42,674 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse0 (* c_main_~y~0 c_main_~y~0))) (or (not (= (mod (+ (* 10 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0) (* 7 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0) (* 6 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0) .cse0) 12) 0)) (forall ((main_~k~0 Int)) (or (< (+ c_main_~c~0 1) main_~k~0) (<= main_~k~0 c_main_~c~0) (= (+ (* main_~k~0 c_main_~y~0) main_~k~0) (+ (* 2 c_main_~y~0) .cse0 1)))))) is different from false [2023-04-02 23:32:44,694 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:32:44,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992002466] [2023-04-02 23:32:44,694 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 23:32:44,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43420639] [2023-04-02 23:32:44,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [43420639] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 23:32:44,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1992726484] [2023-04-02 23:32:44,696 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2023-04-02 23:32:44,696 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 23:32:44,696 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 23:32:44,696 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 23:32:44,696 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 23:32:44,713 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 13 for LOIs [2023-04-02 23:32:45,064 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-04-02 23:32:45,066 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 28 for LOIs [2023-04-02 23:32:45,068 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2023-04-02 23:32:45,071 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 23:32:45,740 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1265#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-04-02 23:32:45,740 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 23:32:45,740 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-04-02 23:32:45,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2023-04-02 23:32:45,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246118223] [2023-04-02 23:32:45,740 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-04-02 23:32:45,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-02 23:32:45,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:32:45,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-02 23:32:45,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=625, Unknown=6, NotChecked=212, Total=930 [2023-04-02 23:32:45,741 INFO L87 Difference]: Start difference. First operand 51 states and 57 transitions. Second operand has 9 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2023-04-02 23:32:45,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:32:45,827 INFO L93 Difference]: Finished difference Result 56 states and 61 transitions. [2023-04-02 23:32:45,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-02 23:32:45,827 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 34 [2023-04-02 23:32:45,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:32:45,829 INFO L225 Difference]: With dead ends: 56 [2023-04-02 23:32:45,829 INFO L226 Difference]: Without dead ends: 50 [2023-04-02 23:32:45,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 20.2s TimeCoverageRelationStatistics Valid=101, Invalid=721, Unknown=6, NotChecked=228, Total=1056 [2023-04-02 23:32:45,830 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 7 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 23:32:45,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 92 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 23:32:45,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-04-02 23:32:45,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2023-04-02 23:32:45,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 33 states have (on average 1.0909090909090908) internal successors, (36), 34 states have internal predecessors, (36), 10 states have call successors, (10), 8 states have call predecessors, (10), 6 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2023-04-02 23:32:45,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2023-04-02 23:32:45,836 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 34 [2023-04-02 23:32:45,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:32:45,836 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2023-04-02 23:32:45,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2023-04-02 23:32:45,837 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2023-04-02 23:32:45,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-04-02 23:32:45,837 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:32:45,837 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:32:45,842 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-04-02 23:32:46,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:32:46,042 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:32:46,042 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:32:46,042 INFO L85 PathProgramCache]: Analyzing trace with hash -602942286, now seen corresponding path program 2 times [2023-04-02 23:32:46,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:32:46,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133945219] [2023-04-02 23:32:46,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:32:46,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:32:46,051 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 23:32:46,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [235964202] [2023-04-02 23:32:46,051 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-04-02 23:32:46,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:32:46,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 23:32:46,052 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 23:32:46,054 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-04-02 23:32:46,124 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-04-02 23:32:46,125 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 23:32:46,125 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 35 conjunts are in the unsatisfiable core [2023-04-02 23:32:46,127 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 23:32:46,282 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 13 proven. 16 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-04-02 23:32:46,282 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 23:32:46,529 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 13 proven. 16 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-04-02 23:32:46,529 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:32:46,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133945219] [2023-04-02 23:32:46,530 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 23:32:46,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [235964202] [2023-04-02 23:32:46,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [235964202] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 23:32:46,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [253818057] [2023-04-02 23:32:46,531 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2023-04-02 23:32:46,531 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 23:32:46,531 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 23:32:46,531 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 23:32:46,531 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 23:32:46,544 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 13 for LOIs [2023-04-02 23:32:46,854 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-04-02 23:32:46,856 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 28 for LOIs [2023-04-02 23:32:46,859 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2023-04-02 23:32:46,861 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 23:32:47,540 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1709#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-04-02 23:32:47,541 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 23:32:47,541 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-02 23:32:47,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 20 [2023-04-02 23:32:47,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030804371] [2023-04-02 23:32:47,541 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-02 23:32:47,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-04-02 23:32:47,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:32:47,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-04-02 23:32:47,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=1053, Unknown=0, NotChecked=0, Total=1190 [2023-04-02 23:32:47,542 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand has 20 states, 17 states have (on average 2.176470588235294) internal successors, (37), 16 states have internal predecessors, (37), 9 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 10 states have call predecessors, (11), 9 states have call successors, (11) [2023-04-02 23:32:48,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:32:48,026 INFO L93 Difference]: Finished difference Result 67 states and 78 transitions. [2023-04-02 23:32:48,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-02 23:32:48,027 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 2.176470588235294) internal successors, (37), 16 states have internal predecessors, (37), 9 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 10 states have call predecessors, (11), 9 states have call successors, (11) Word has length 42 [2023-04-02 23:32:48,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:32:48,028 INFO L225 Difference]: With dead ends: 67 [2023-04-02 23:32:48,028 INFO L226 Difference]: Without dead ends: 59 [2023-04-02 23:32:48,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 92 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 504 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=249, Invalid=1643, Unknown=0, NotChecked=0, Total=1892 [2023-04-02 23:32:48,029 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 38 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 23:32:48,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 141 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 23:32:48,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-04-02 23:32:48,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 55. [2023-04-02 23:32:48,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 37 states have (on average 1.0810810810810811) internal successors, (40), 37 states have internal predecessors, (40), 11 states have call successors, (11), 8 states have call predecessors, (11), 6 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-04-02 23:32:48,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 60 transitions. [2023-04-02 23:32:48,037 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 60 transitions. Word has length 42 [2023-04-02 23:32:48,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:32:48,037 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 60 transitions. [2023-04-02 23:32:48,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 2.176470588235294) internal successors, (37), 16 states have internal predecessors, (37), 9 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 10 states have call predecessors, (11), 9 states have call successors, (11) [2023-04-02 23:32:48,037 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 60 transitions. [2023-04-02 23:32:48,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-04-02 23:32:48,038 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:32:48,038 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:32:48,045 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-04-02 23:32:48,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:32:48,238 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:32:48,239 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:32:48,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1070382990, now seen corresponding path program 1 times [2023-04-02 23:32:48,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:32:48,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164067208] [2023-04-02 23:32:48,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:32:48,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:32:48,283 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 23:32:48,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1365275899] [2023-04-02 23:32:48,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:32:48,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:32:48,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 23:32:48,287 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 23:32:48,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-04-02 23:32:48,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:32:48,329 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 13 conjunts are in the unsatisfiable core [2023-04-02 23:32:48,332 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 23:32:48,386 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 24 proven. 56 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-02 23:32:48,386 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 23:32:48,467 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 10 proven. 32 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-04-02 23:32:48,467 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:32:48,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164067208] [2023-04-02 23:32:48,467 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 23:32:48,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1365275899] [2023-04-02 23:32:48,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1365275899] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 23:32:48,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [21852637] [2023-04-02 23:32:48,472 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2023-04-02 23:32:48,472 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 23:32:48,472 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 23:32:48,472 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 23:32:48,472 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 23:32:48,485 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 13 for LOIs [2023-04-02 23:32:48,748 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-04-02 23:32:48,750 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 28 for LOIs [2023-04-02 23:32:48,753 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2023-04-02 23:32:48,755 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 23:32:49,252 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2247#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-04-02 23:32:49,253 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 23:32:49,253 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-02 23:32:49,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-04-02 23:32:49,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221156653] [2023-04-02 23:32:49,253 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-02 23:32:49,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-02 23:32:49,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:32:49,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-02 23:32:49,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=684, Unknown=0, NotChecked=0, Total=870 [2023-04-02 23:32:49,254 INFO L87 Difference]: Start difference. First operand 55 states and 60 transitions. Second operand has 14 states, 14 states have (on average 4.0) internal successors, (56), 14 states have internal predecessors, (56), 12 states have call successors, (16), 8 states have call predecessors, (16), 8 states have return successors, (14), 11 states have call predecessors, (14), 12 states have call successors, (14) [2023-04-02 23:32:49,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:32:49,436 INFO L93 Difference]: Finished difference Result 131 states and 142 transitions. [2023-04-02 23:32:49,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-04-02 23:32:49,438 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.0) internal successors, (56), 14 states have internal predecessors, (56), 12 states have call successors, (16), 8 states have call predecessors, (16), 8 states have return successors, (14), 11 states have call predecessors, (14), 12 states have call successors, (14) Word has length 52 [2023-04-02 23:32:49,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:32:49,439 INFO L225 Difference]: With dead ends: 131 [2023-04-02 23:32:49,439 INFO L226 Difference]: Without dead ends: 121 [2023-04-02 23:32:49,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=299, Invalid=1183, Unknown=0, NotChecked=0, Total=1482 [2023-04-02 23:32:49,440 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 56 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 23:32:49,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 129 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 23:32:49,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2023-04-02 23:32:49,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 101. [2023-04-02 23:32:49,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 69 states have (on average 1.0869565217391304) internal successors, (75), 73 states have internal predecessors, (75), 19 states have call successors, (19), 14 states have call predecessors, (19), 12 states have return successors, (17), 13 states have call predecessors, (17), 17 states have call successors, (17) [2023-04-02 23:32:49,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 111 transitions. [2023-04-02 23:32:49,453 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 111 transitions. Word has length 52 [2023-04-02 23:32:49,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:32:49,454 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 111 transitions. [2023-04-02 23:32:49,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.0) internal successors, (56), 14 states have internal predecessors, (56), 12 states have call successors, (16), 8 states have call predecessors, (16), 8 states have return successors, (14), 11 states have call predecessors, (14), 12 states have call successors, (14) [2023-04-02 23:32:49,454 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 111 transitions. [2023-04-02 23:32:49,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-04-02 23:32:49,455 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:32:49,455 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:32:49,471 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-04-02 23:32:49,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-04-02 23:32:49,662 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:32:49,662 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:32:49,662 INFO L85 PathProgramCache]: Analyzing trace with hash -2024532139, now seen corresponding path program 3 times [2023-04-02 23:32:49,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:32:49,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37675474] [2023-04-02 23:32:49,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:32:49,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:32:49,669 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 23:32:49,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [624565679] [2023-04-02 23:32:49,669 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-04-02 23:32:49,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:32:49,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 23:32:49,682 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 23:32:49,683 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-04-02 23:32:49,718 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-04-02 23:32:49,718 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 23:32:49,719 INFO L262 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 31 conjunts are in the unsatisfiable core [2023-04-02 23:32:49,731 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 23:32:49,835 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 14 proven. 60 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-04-02 23:32:49,835 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 23:32:49,926 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:32:49,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37675474] [2023-04-02 23:32:49,926 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 23:32:49,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [624565679] [2023-04-02 23:32:49,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [624565679] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 23:32:49,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [604242498] [2023-04-02 23:32:49,927 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2023-04-02 23:32:49,927 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 23:32:49,927 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 23:32:49,928 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 23:32:49,928 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 23:32:49,940 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 13 for LOIs [2023-04-02 23:32:50,216 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-04-02 23:32:50,218 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 28 for LOIs [2023-04-02 23:32:50,220 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2023-04-02 23:32:50,223 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 23:32:50,948 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2881#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-04-02 23:32:50,948 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 23:32:50,948 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-04-02 23:32:50,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2023-04-02 23:32:50,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167645588] [2023-04-02 23:32:50,950 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-04-02 23:32:50,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-02 23:32:50,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:32:50,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-02 23:32:50,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=893, Unknown=0, NotChecked=0, Total=992 [2023-04-02 23:32:50,965 INFO L87 Difference]: Start difference. First operand 101 states and 111 transitions. Second operand has 11 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 8 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2023-04-02 23:32:51,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:32:51,096 INFO L93 Difference]: Finished difference Result 106 states and 115 transitions. [2023-04-02 23:32:51,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-02 23:32:51,097 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 8 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) Word has length 66 [2023-04-02 23:32:51,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:32:51,100 INFO L225 Difference]: With dead ends: 106 [2023-04-02 23:32:51,100 INFO L226 Difference]: Without dead ends: 100 [2023-04-02 23:32:51,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=113, Invalid=1009, Unknown=0, NotChecked=0, Total=1122 [2023-04-02 23:32:51,102 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 2 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 23:32:51,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 249 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 23:32:51,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2023-04-02 23:32:51,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2023-04-02 23:32:51,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 69 states have (on average 1.0724637681159421) internal successors, (74), 72 states have internal predecessors, (74), 18 states have call successors, (18), 14 states have call predecessors, (18), 12 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2023-04-02 23:32:51,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 108 transitions. [2023-04-02 23:32:51,128 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 108 transitions. Word has length 66 [2023-04-02 23:32:51,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:32:51,128 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 108 transitions. [2023-04-02 23:32:51,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 8 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2023-04-02 23:32:51,128 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 108 transitions. [2023-04-02 23:32:51,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-04-02 23:32:51,130 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:32:51,130 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 7, 7, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:32:51,137 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-04-02 23:32:51,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:32:51,337 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:32:51,338 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:32:51,338 INFO L85 PathProgramCache]: Analyzing trace with hash -108267978, now seen corresponding path program 4 times [2023-04-02 23:32:51,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:32:51,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702830937] [2023-04-02 23:32:51,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:32:51,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:32:51,344 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 23:32:51,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [69944078] [2023-04-02 23:32:51,344 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-04-02 23:32:51,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:32:51,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 23:32:51,366 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 23:32:51,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-04-02 23:32:51,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:32:51,591 INFO L262 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 40 conjunts are in the unsatisfiable core [2023-04-02 23:32:51,593 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 23:32:51,746 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 36 proven. 85 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2023-04-02 23:32:51,746 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 23:32:55,791 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse0 (* c_main_~y~0 c_main_~y~0))) (or (= (* c_main_~y~0 c_main_~k~0) .cse0) (not (= (mod (+ (* 10 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0) (* 7 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0) (* 6 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0) .cse0) 12) 0)))) is different from false [2023-04-02 23:33:15,874 WARN L861 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 0)) (forall ((v_main_~y~0_BEFORE_CALL_110 Int) (v_main_~k~0_BEFORE_CALL_113 Int)) (let ((.cse0 (* v_main_~y~0_BEFORE_CALL_110 v_main_~y~0_BEFORE_CALL_110))) (or (= .cse0 (* v_main_~k~0_BEFORE_CALL_113 v_main_~y~0_BEFORE_CALL_110)) (= (mod (+ (* v_main_~y~0_BEFORE_CALL_110 v_main_~y~0_BEFORE_CALL_110 v_main_~y~0_BEFORE_CALL_110 v_main_~y~0_BEFORE_CALL_110 v_main_~y~0_BEFORE_CALL_110 6) (* 7 v_main_~y~0_BEFORE_CALL_110 v_main_~y~0_BEFORE_CALL_110 v_main_~y~0_BEFORE_CALL_110 v_main_~y~0_BEFORE_CALL_110) .cse0 (* v_main_~y~0_BEFORE_CALL_110 v_main_~y~0_BEFORE_CALL_110 v_main_~y~0_BEFORE_CALL_110 v_main_~y~0_BEFORE_CALL_110 v_main_~y~0_BEFORE_CALL_110 v_main_~y~0_BEFORE_CALL_110 10)) 12) 0))))) is different from true [2023-04-02 23:33:33,902 WARN L861 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 0)) (forall ((v_main_~y~0_BEFORE_CALL_110 Int) (v_main_~k~0_BEFORE_CALL_113 Int)) (let ((.cse0 (* v_main_~y~0_BEFORE_CALL_110 v_main_~y~0_BEFORE_CALL_110))) (or (= .cse0 (* v_main_~k~0_BEFORE_CALL_113 v_main_~y~0_BEFORE_CALL_110)) (= (mod (+ (* v_main_~y~0_BEFORE_CALL_110 v_main_~y~0_BEFORE_CALL_110 v_main_~y~0_BEFORE_CALL_110 v_main_~y~0_BEFORE_CALL_110 v_main_~y~0_BEFORE_CALL_110 6) (* 7 v_main_~y~0_BEFORE_CALL_110 v_main_~y~0_BEFORE_CALL_110 v_main_~y~0_BEFORE_CALL_110 v_main_~y~0_BEFORE_CALL_110) .cse0 (* v_main_~y~0_BEFORE_CALL_110 v_main_~y~0_BEFORE_CALL_110 v_main_~y~0_BEFORE_CALL_110 v_main_~y~0_BEFORE_CALL_110 v_main_~y~0_BEFORE_CALL_110 v_main_~y~0_BEFORE_CALL_110 10)) 12) 0)))) (= c___VERIFIER_assert_~cond 0)) is different from true [2023-04-02 23:33:39,132 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse0 (* c_main_~y~0 c_main_~y~0))) (or (< c_main_~c~0 c_main_~k~0) (= (* c_main_~y~0 c_main_~k~0) .cse0) (not (= (mod (+ (* 10 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0) (* 7 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0) (* 6 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0) .cse0) 12) 0)))) is different from false [2023-04-02 23:33:49,176 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse0 (* c_main_~y~0 c_main_~y~0))) (or (not (= (mod (+ (* 10 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0) (* 7 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0) (* 6 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0) .cse0) 12) 0)) (forall ((main_~k~0 Int)) (or (< (+ c_main_~c~0 1) main_~k~0) (<= main_~k~0 c_main_~c~0) (= (+ (* main_~k~0 c_main_~y~0) main_~k~0) (+ (* 2 c_main_~y~0) .cse0 1)))))) is different from false [2023-04-02 23:33:51,195 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:33:51,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702830937] [2023-04-02 23:33:51,195 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 23:33:51,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [69944078] [2023-04-02 23:33:51,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [69944078] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 23:33:51,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1886588668] [2023-04-02 23:33:51,196 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2023-04-02 23:33:51,197 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 23:33:51,197 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 23:33:51,197 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 23:33:51,197 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 23:33:51,208 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 13 for LOIs [2023-04-02 23:33:51,515 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-04-02 23:33:51,517 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 28 for LOIs [2023-04-02 23:33:51,519 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2023-04-02 23:33:51,521 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 23:33:52,208 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3493#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-04-02 23:33:52,208 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 23:33:52,209 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-04-02 23:33:52,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2023-04-02 23:33:52,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373711149] [2023-04-02 23:33:52,209 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-04-02 23:33:52,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-02 23:33:52,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:33:52,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-02 23:33:52,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=855, Unknown=5, NotChecked=310, Total=1260 [2023-04-02 23:33:52,210 INFO L87 Difference]: Start difference. First operand 100 states and 108 transitions. Second operand has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 9 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2023-04-02 23:33:52,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:33:52,436 INFO L93 Difference]: Finished difference Result 105 states and 112 transitions. [2023-04-02 23:33:52,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-02 23:33:52,436 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 9 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) Word has length 74 [2023-04-02 23:33:52,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:33:52,437 INFO L225 Difference]: With dead ends: 105 [2023-04-02 23:33:52,437 INFO L226 Difference]: Without dead ends: 99 [2023-04-02 23:33:52,438 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 132 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=103, Invalid=968, Unknown=5, NotChecked=330, Total=1406 [2023-04-02 23:33:52,438 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 6 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 23:33:52,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 295 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 23:33:52,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2023-04-02 23:33:52,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2023-04-02 23:33:52,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 69 states have (on average 1.0579710144927537) internal successors, (73), 71 states have internal predecessors, (73), 17 states have call successors, (17), 14 states have call predecessors, (17), 12 states have return successors, (15), 13 states have call predecessors, (15), 15 states have call successors, (15) [2023-04-02 23:33:52,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 105 transitions. [2023-04-02 23:33:52,452 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 105 transitions. Word has length 74 [2023-04-02 23:33:52,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:33:52,452 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 105 transitions. [2023-04-02 23:33:52,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 9 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2023-04-02 23:33:52,452 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 105 transitions. [2023-04-02 23:33:52,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-04-02 23:33:52,453 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:33:52,453 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 8, 8, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:33:52,458 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-04-02 23:33:52,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-04-02 23:33:52,658 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:33:52,658 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:33:52,658 INFO L85 PathProgramCache]: Analyzing trace with hash -315923433, now seen corresponding path program 5 times [2023-04-02 23:33:52,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:33:52,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386925877] [2023-04-02 23:33:52,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:33:52,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:33:52,667 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 23:33:52,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1600306337] [2023-04-02 23:33:52,667 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-04-02 23:33:52,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:33:52,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 23:33:52,668 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 23:33:52,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-04-02 23:33:56,952 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2023-04-02 23:33:56,952 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 23:33:56,955 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 44 conjunts are in the unsatisfiable core [2023-04-02 23:33:56,956 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 23:33:57,134 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 26 proven. 128 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2023-04-02 23:33:57,134 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 23:33:57,227 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:33:57,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386925877] [2023-04-02 23:33:57,228 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 23:33:57,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1600306337] [2023-04-02 23:33:57,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1600306337] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 23:33:57,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [911769243] [2023-04-02 23:33:57,229 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2023-04-02 23:33:57,229 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 23:33:57,229 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 23:33:57,229 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 23:33:57,229 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 23:33:57,252 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 13 for LOIs [2023-04-02 23:33:57,536 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-04-02 23:33:57,538 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 28 for LOIs [2023-04-02 23:33:57,540 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2023-04-02 23:33:57,542 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 23:33:58,179 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4123#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-04-02 23:33:58,179 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 23:33:58,179 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-04-02 23:33:58,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2023-04-02 23:33:58,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379037725] [2023-04-02 23:33:58,180 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-04-02 23:33:58,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-04-02 23:33:58,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:33:58,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-04-02 23:33:58,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=1017, Unknown=0, NotChecked=0, Total=1122 [2023-04-02 23:33:58,181 INFO L87 Difference]: Start difference. First operand 99 states and 105 transitions. Second operand has 15 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 10 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 10 states have call predecessors, (11), 10 states have call successors, (11) [2023-04-02 23:33:58,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:33:58,412 INFO L93 Difference]: Finished difference Result 104 states and 109 transitions. [2023-04-02 23:33:58,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-02 23:33:58,412 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 10 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 10 states have call predecessors, (11), 10 states have call successors, (11) Word has length 82 [2023-04-02 23:33:58,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:33:58,413 INFO L225 Difference]: With dead ends: 104 [2023-04-02 23:33:58,413 INFO L226 Difference]: Without dead ends: 98 [2023-04-02 23:33:58,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 150 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=119, Invalid=1141, Unknown=0, NotChecked=0, Total=1260 [2023-04-02 23:33:58,414 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 7 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 23:33:58,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 320 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 420 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 23:33:58,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2023-04-02 23:33:58,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2023-04-02 23:33:58,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 69 states have (on average 1.0434782608695652) internal successors, (72), 70 states have internal predecessors, (72), 16 states have call successors, (16), 14 states have call predecessors, (16), 12 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2023-04-02 23:33:58,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 102 transitions. [2023-04-02 23:33:58,424 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 102 transitions. Word has length 82 [2023-04-02 23:33:58,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:33:58,424 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 102 transitions. [2023-04-02 23:33:58,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 10 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 10 states have call predecessors, (11), 10 states have call successors, (11) [2023-04-02 23:33:58,424 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 102 transitions. [2023-04-02 23:33:58,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-04-02 23:33:58,425 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:33:58,425 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 9, 9, 9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:33:58,434 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-04-02 23:33:58,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-04-02 23:33:58,631 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:33:58,631 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:33:58,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1160995064, now seen corresponding path program 6 times [2023-04-02 23:33:58,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:33:58,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966811416] [2023-04-02 23:33:58,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:33:58,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:33:58,638 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 23:33:58,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1846999002] [2023-04-02 23:33:58,638 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-04-02 23:33:58,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:33:58,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 23:33:58,644 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 23:33:58,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-04-02 23:33:58,715 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-04-02 23:33:58,715 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 23:33:58,716 INFO L262 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 43 conjunts are in the unsatisfiable core [2023-04-02 23:33:58,719 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 23:33:58,910 INFO L134 CoverageAnalysis]: Checked inductivity of 344 backedges. 20 proven. 144 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-04-02 23:33:58,910 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 23:33:59,011 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:33:59,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966811416] [2023-04-02 23:33:59,011 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 23:33:59,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1846999002] [2023-04-02 23:33:59,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1846999002] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 23:33:59,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [807886586] [2023-04-02 23:33:59,013 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2023-04-02 23:33:59,013 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 23:33:59,014 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 23:33:59,014 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 23:33:59,014 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 23:33:59,050 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 13 for LOIs [2023-04-02 23:33:59,291 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-04-02 23:33:59,293 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 28 for LOIs [2023-04-02 23:33:59,295 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2023-04-02 23:33:59,298 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 23:33:59,975 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4773#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-04-02 23:33:59,975 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 23:33:59,975 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-04-02 23:33:59,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2023-04-02 23:33:59,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404587841] [2023-04-02 23:33:59,976 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-04-02 23:33:59,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-02 23:33:59,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:33:59,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-02 23:33:59,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=1091, Unknown=0, NotChecked=0, Total=1190 [2023-04-02 23:33:59,977 INFO L87 Difference]: Start difference. First operand 98 states and 102 transitions. Second operand has 14 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 11 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 11 states have call predecessors, (12), 11 states have call successors, (12) [2023-04-02 23:34:00,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:34:00,349 INFO L93 Difference]: Finished difference Result 103 states and 106 transitions. [2023-04-02 23:34:00,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-02 23:34:00,350 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 11 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 11 states have call predecessors, (12), 11 states have call successors, (12) Word has length 90 [2023-04-02 23:34:00,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:34:00,350 INFO L225 Difference]: With dead ends: 103 [2023-04-02 23:34:00,350 INFO L226 Difference]: Without dead ends: 97 [2023-04-02 23:34:00,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=113, Invalid=1219, Unknown=0, NotChecked=0, Total=1332 [2023-04-02 23:34:00,351 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 2 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 23:34:00,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 402 Invalid, 406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 405 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 23:34:00,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2023-04-02 23:34:00,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2023-04-02 23:34:00,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 69 states have (on average 1.0289855072463767) internal successors, (71), 69 states have internal predecessors, (71), 15 states have call successors, (15), 14 states have call predecessors, (15), 12 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-04-02 23:34:00,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 99 transitions. [2023-04-02 23:34:00,363 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 99 transitions. Word has length 90 [2023-04-02 23:34:00,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:34:00,364 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 99 transitions. [2023-04-02 23:34:00,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 11 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 11 states have call predecessors, (12), 11 states have call successors, (12) [2023-04-02 23:34:00,364 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 99 transitions. [2023-04-02 23:34:00,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-04-02 23:34:00,366 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:34:00,366 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 10, 10, 10, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:34:00,393 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-04-02 23:34:00,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-04-02 23:34:00,571 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:34:00,571 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:34:00,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1403317465, now seen corresponding path program 7 times [2023-04-02 23:34:00,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:34:00,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853982503] [2023-04-02 23:34:00,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:34:00,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:34:00,583 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 23:34:00,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1577864408] [2023-04-02 23:34:00,584 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-04-02 23:34:00,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:34:00,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 23:34:00,585 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 23:34:00,586 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-04-02 23:34:00,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:34:00,898 INFO L262 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 52 conjunts are in the unsatisfiable core [2023-04-02 23:34:00,900 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 23:34:01,145 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 51 proven. 181 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2023-04-02 23:34:01,145 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 23:34:05,189 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse0 (* c_main_~y~0 c_main_~y~0))) (or (= (* c_main_~y~0 c_main_~k~0) .cse0) (not (= (mod (+ (* 10 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0) (* 7 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0) (* 6 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0) .cse0) 12) 0)))) is different from false [2023-04-02 23:34:25,222 WARN L861 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 0)) (forall ((v_main_~k~0_BEFORE_CALL_176 Int) (v_main_~y~0_BEFORE_CALL_188 Int)) (let ((.cse0 (* v_main_~y~0_BEFORE_CALL_188 v_main_~y~0_BEFORE_CALL_188))) (or (= (mod (+ (* v_main_~y~0_BEFORE_CALL_188 v_main_~y~0_BEFORE_CALL_188 v_main_~y~0_BEFORE_CALL_188 v_main_~y~0_BEFORE_CALL_188 v_main_~y~0_BEFORE_CALL_188 v_main_~y~0_BEFORE_CALL_188 10) (* 7 v_main_~y~0_BEFORE_CALL_188 v_main_~y~0_BEFORE_CALL_188 v_main_~y~0_BEFORE_CALL_188 v_main_~y~0_BEFORE_CALL_188) (* v_main_~y~0_BEFORE_CALL_188 v_main_~y~0_BEFORE_CALL_188 v_main_~y~0_BEFORE_CALL_188 v_main_~y~0_BEFORE_CALL_188 v_main_~y~0_BEFORE_CALL_188 6) .cse0) 12) 0) (= (* v_main_~k~0_BEFORE_CALL_176 v_main_~y~0_BEFORE_CALL_188) .cse0))))) is different from true [2023-04-02 23:34:43,248 WARN L861 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 0)) (forall ((v_main_~k~0_BEFORE_CALL_176 Int) (v_main_~y~0_BEFORE_CALL_188 Int)) (let ((.cse0 (* v_main_~y~0_BEFORE_CALL_188 v_main_~y~0_BEFORE_CALL_188))) (or (= (mod (+ (* v_main_~y~0_BEFORE_CALL_188 v_main_~y~0_BEFORE_CALL_188 v_main_~y~0_BEFORE_CALL_188 v_main_~y~0_BEFORE_CALL_188 v_main_~y~0_BEFORE_CALL_188 v_main_~y~0_BEFORE_CALL_188 10) (* 7 v_main_~y~0_BEFORE_CALL_188 v_main_~y~0_BEFORE_CALL_188 v_main_~y~0_BEFORE_CALL_188 v_main_~y~0_BEFORE_CALL_188) (* v_main_~y~0_BEFORE_CALL_188 v_main_~y~0_BEFORE_CALL_188 v_main_~y~0_BEFORE_CALL_188 v_main_~y~0_BEFORE_CALL_188 v_main_~y~0_BEFORE_CALL_188 6) .cse0) 12) 0) (= (* v_main_~k~0_BEFORE_CALL_176 v_main_~y~0_BEFORE_CALL_188) .cse0)))) (= c___VERIFIER_assert_~cond 0)) is different from true [2023-04-02 23:34:47,257 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse0 (* c_main_~y~0 c_main_~y~0))) (or (< c_main_~c~0 c_main_~k~0) (= (* c_main_~y~0 c_main_~k~0) .cse0) (not (= (mod (+ (* 10 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0) (* 7 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0) (* 6 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0) .cse0) 12) 0)))) is different from false [2023-04-02 23:34:57,305 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse0 (* c_main_~y~0 c_main_~y~0))) (or (not (= (mod (+ (* 10 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0) (* 7 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0) (* 6 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0 c_main_~y~0) .cse0) 12) 0)) (forall ((main_~k~0 Int)) (or (< (+ c_main_~c~0 1) main_~k~0) (<= main_~k~0 c_main_~c~0) (= (+ (* main_~k~0 c_main_~y~0) main_~k~0) (+ (* 2 c_main_~y~0) .cse0 1)))))) is different from false [2023-04-02 23:34:59,321 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:34:59,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853982503] [2023-04-02 23:34:59,321 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 23:34:59,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1577864408] [2023-04-02 23:34:59,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1577864408] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 23:34:59,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [739567451] [2023-04-02 23:34:59,323 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2023-04-02 23:34:59,323 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 23:34:59,323 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 23:34:59,323 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 23:34:59,323 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 23:34:59,334 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 13 for LOIs [2023-04-02 23:34:59,606 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-04-02 23:34:59,608 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 28 for LOIs [2023-04-02 23:34:59,610 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2023-04-02 23:34:59,612 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 23:35:00,367 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5448#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-04-02 23:35:00,368 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 23:35:00,368 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-04-02 23:35:00,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2023-04-02 23:35:00,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444855518] [2023-04-02 23:35:00,368 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-04-02 23:35:00,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-04-02 23:35:00,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:35:00,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-04-02 23:35:00,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=1041, Unknown=5, NotChecked=340, Total=1482 [2023-04-02 23:35:00,369 INFO L87 Difference]: Start difference. First operand 97 states and 99 transitions. Second operand has 17 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 12 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2023-04-02 23:35:00,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:35:00,697 INFO L93 Difference]: Finished difference Result 105 states and 109 transitions. [2023-04-02 23:35:00,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-02 23:35:00,698 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 12 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) Word has length 98 [2023-04-02 23:35:00,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:35:00,698 INFO L225 Difference]: With dead ends: 105 [2023-04-02 23:35:00,698 INFO L226 Difference]: Without dead ends: 99 [2023-04-02 23:35:00,699 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 177 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=109, Invalid=1166, Unknown=5, NotChecked=360, Total=1640 [2023-04-02 23:35:00,699 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 6 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 612 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 23:35:00,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 457 Invalid, 613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 612 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 23:35:00,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2023-04-02 23:35:00,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2023-04-02 23:35:00,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 70 states have (on average 1.0285714285714285) internal successors, (72), 70 states have internal predecessors, (72), 16 states have call successors, (16), 14 states have call predecessors, (16), 12 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-04-02 23:35:00,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 102 transitions. [2023-04-02 23:35:00,708 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 102 transitions. Word has length 98 [2023-04-02 23:35:00,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:35:00,708 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 102 transitions. [2023-04-02 23:35:00,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 12 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2023-04-02 23:35:00,708 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 102 transitions. [2023-04-02 23:35:00,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-04-02 23:35:00,708 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:35:00,709 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:35:00,714 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-04-02 23:35:00,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-04-02 23:35:00,909 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:35:00,909 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:35:00,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1585828780, now seen corresponding path program 2 times [2023-04-02 23:35:00,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:35:00,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051190871] [2023-04-02 23:35:00,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:35:00,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:35:00,917 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 23:35:00,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2079813144] [2023-04-02 23:35:00,917 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-04-02 23:35:00,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:35:00,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 23:35:00,918 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 23:35:00,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-04-02 23:35:15,350 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2023-04-02 23:35:15,350 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2023-04-02 23:35:15,350 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-04-02 23:35:15,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-04-02 23:35:15,425 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-04-02 23:35:15,426 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-04-02 23:35:15,426 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-02 23:35:15,453 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-04-02 23:35:15,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:35:15,630 INFO L445 BasicCegarLoop]: Path program histogram: [7, 2, 1, 1, 1, 1, 1] [2023-04-02 23:35:15,633 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-04-02 23:35:15,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.04 11:35:15 BoogieIcfgContainer [2023-04-02 23:35:15,663 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-04-02 23:35:15,664 INFO L158 Benchmark]: Toolchain (without parser) took 222028.25ms. Allocated memory was 325.1MB in the beginning and 401.6MB in the end (delta: 76.5MB). Free memory was 285.6MB in the beginning and 177.9MB in the end (delta: 107.7MB). Peak memory consumption was 185.9MB. Max. memory is 8.0GB. [2023-04-02 23:35:15,664 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 188.7MB. Free memory is still 132.0MB. There was no memory consumed. Max. memory is 8.0GB. [2023-04-02 23:35:15,664 INFO L158 Benchmark]: CACSL2BoogieTranslator took 132.20ms. Allocated memory is still 325.1MB. Free memory was 285.2MB in the beginning and 274.7MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-04-02 23:35:15,664 INFO L158 Benchmark]: Boogie Preprocessor took 17.29ms. Allocated memory is still 325.1MB. Free memory was 274.7MB in the beginning and 273.2MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-04-02 23:35:15,664 INFO L158 Benchmark]: RCFGBuilder took 271.94ms. Allocated memory is still 325.1MB. Free memory was 273.2MB in the beginning and 260.6MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-04-02 23:35:15,664 INFO L158 Benchmark]: TraceAbstraction took 221601.97ms. Allocated memory was 325.1MB in the beginning and 401.6MB in the end (delta: 76.5MB). Free memory was 260.0MB in the beginning and 177.9MB in the end (delta: 82.1MB). Peak memory consumption was 159.6MB. Max. memory is 8.0GB. [2023-04-02 23:35:15,665 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08ms. Allocated memory is still 188.7MB. Free memory is still 132.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 132.20ms. Allocated memory is still 325.1MB. Free memory was 285.2MB in the beginning and 274.7MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 17.29ms. Allocated memory is still 325.1MB. Free memory was 274.7MB in the beginning and 273.2MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 271.94ms. Allocated memory is still 325.1MB. Free memory was 273.2MB in the beginning and 260.6MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 221601.97ms. Allocated memory was 325.1MB in the beginning and 401.6MB in the end (delta: 76.5MB). Free memory was 260.0MB in the beginning and 177.9MB in the end (delta: 82.1MB). Peak memory consumption was 159.6MB. 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() [L22] CALL assume_abort_if_not(k <= 256) VAL [\old(cond)=1, \old(counter)=0, counter=0] [L7] COND FALSE !(!cond) [L22] RET assume_abort_if_not(k <= 256) VAL [\old(counter)=0, counter=0, k=255] [L24] y = 0 [L25] x = 0 [L26] c = 0 VAL [\old(counter)=0, c=0, counter=0, k=255, x=0, y=0] [L28] EXPR counter++ VAL [\old(counter)=0, c=0, counter++=0, counter=1, k=255, x=0, y=0] [L28] COND TRUE counter++<10 [L29] CALL __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 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] [L29] RET __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) VAL [\old(counter)=0, c=0, counter=1, k=255, x=0, y=0] [L31] COND FALSE !(!(c < k)) [L34] c = c + 1 [L35] y = y + 1 [L36] x = y * y * y * y * y + x VAL [\old(counter)=0, c=1, counter=1, k=255, x=1, y=1] [L28] EXPR counter++ VAL [\old(counter)=0, c=1, counter++=1, counter=2, k=255, x=1, y=1] [L28] COND TRUE counter++<10 [L29] CALL __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) VAL [\old(cond)=1, \old(counter)=0, counter=2] [L10] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=2] [L29] RET __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) VAL [\old(counter)=0, c=1, counter=2, k=255, x=1, y=1] [L31] COND FALSE !(!(c < k)) [L34] c = c + 1 [L35] y = y + 1 [L36] x = y * y * y * y * y + x VAL [\old(counter)=0, c=2, counter=2, k=255, x=33, y=2] [L28] EXPR counter++ VAL [\old(counter)=0, c=2, counter++=2, counter=3, k=255, x=33, y=2] [L28] COND TRUE counter++<10 [L29] CALL __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) VAL [\old(cond)=1, \old(counter)=0, counter=3] [L10] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=3] [L29] RET __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) VAL [\old(counter)=0, c=2, counter=3, k=255, x=33, y=2] [L31] COND FALSE !(!(c < k)) [L34] c = c + 1 [L35] y = y + 1 [L36] x = y * y * y * y * y + x VAL [\old(counter)=0, c=3, counter=3, k=255, x=276, y=3] [L28] EXPR counter++ VAL [\old(counter)=0, c=3, counter++=3, counter=4, k=255, x=276, y=3] [L28] COND TRUE counter++<10 [L29] CALL __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) VAL [\old(cond)=1, \old(counter)=0, counter=4] [L10] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=4] [L29] RET __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) VAL [\old(counter)=0, c=3, counter=4, k=255, x=276, y=3] [L31] COND FALSE !(!(c < k)) [L34] c = c + 1 [L35] y = y + 1 [L36] x = y * y * y * y * y + x VAL [\old(counter)=0, c=4, counter=4, k=255, x=1300, y=4] [L28] EXPR counter++ VAL [\old(counter)=0, c=4, counter++=4, counter=5, k=255, x=1300, y=4] [L28] COND TRUE counter++<10 [L29] CALL __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) VAL [\old(cond)=1, \old(counter)=0, counter=5] [L10] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=5] [L29] RET __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) VAL [\old(counter)=0, c=4, counter=5, k=255, x=1300, y=4] [L31] COND FALSE !(!(c < k)) [L34] c = c + 1 [L35] y = y + 1 [L36] x = y * y * y * y * y + x VAL [\old(counter)=0, c=5, counter=5, k=255, x=4425, y=5] [L28] EXPR counter++ VAL [\old(counter)=0, c=5, counter++=5, counter=6, k=255, x=4425, y=5] [L28] COND TRUE counter++<10 [L29] CALL __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) VAL [\old(cond)=1, \old(counter)=0, counter=6] [L10] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=6] [L29] RET __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) VAL [\old(counter)=0, c=5, counter=6, k=255, x=4425, y=5] [L31] COND FALSE !(!(c < k)) [L34] c = c + 1 [L35] y = y + 1 [L36] x = y * y * y * y * y + x VAL [\old(counter)=0, c=6, counter=6, k=255, x=12201, y=6] [L28] EXPR counter++ VAL [\old(counter)=0, c=6, counter++=6, counter=7, k=255, x=12201, y=6] [L28] COND TRUE counter++<10 [L29] CALL __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) VAL [\old(cond)=1, \old(counter)=0, counter=7] [L10] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=7] [L29] RET __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) VAL [\old(counter)=0, c=6, counter=7, k=255, x=12201, y=6] [L31] COND FALSE !(!(c < k)) [L34] c = c + 1 [L35] y = y + 1 [L36] x = y * y * y * y * y + x VAL [\old(counter)=0, c=7, counter=7, k=255, x=29008, y=7] [L28] EXPR counter++ VAL [\old(counter)=0, c=7, counter++=7, counter=8, k=255, x=29008, y=7] [L28] COND TRUE counter++<10 [L29] CALL __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) VAL [\old(cond)=1, \old(counter)=0, counter=8] [L10] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=8] [L29] RET __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) VAL [\old(counter)=0, c=7, counter=8, k=255, x=29008, y=7] [L31] COND FALSE !(!(c < k)) [L34] c = c + 1 [L35] y = y + 1 [L36] x = y * y * y * y * y + x VAL [\old(counter)=0, c=8, counter=8, k=255, x=61776, y=8] [L28] EXPR counter++ VAL [\old(counter)=0, c=8, counter++=8, counter=9, k=255, x=61776, y=8] [L28] COND TRUE counter++<10 [L29] CALL __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) VAL [\old(cond)=1, \old(counter)=0, counter=9] [L10] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=9] [L29] RET __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) VAL [\old(counter)=0, c=8, counter=9, k=255, x=61776, y=8] [L31] COND FALSE !(!(c < k)) [L34] c = c + 1 [L35] y = y + 1 [L36] x = y * y * y * y * y + x VAL [\old(counter)=0, c=9, counter=9, k=255, x=120825, y=9] [L28] EXPR counter++ VAL [\old(counter)=0, c=9, counter++=9, counter=10, k=255, x=120825, y=9] [L28] COND TRUE counter++<10 [L29] CALL __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) VAL [\old(cond)=1, \old(counter)=0, counter=10] [L10] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=10] [L29] RET __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) VAL [\old(counter)=0, c=9, counter=10, k=255, x=120825, y=9] [L31] COND FALSE !(!(c < k)) [L34] c = c + 1 [L35] y = y + 1 [L36] x = y * y * y * y * y + x VAL [\old(counter)=0, c=10, counter=10, k=255, x=220825, y=10] [L28] EXPR counter++ VAL [\old(counter)=0, c=10, counter++=10, counter=11, k=255, x=220825, y=10] [L28] COND FALSE !(counter++<10) [L39] CALL __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) VAL [\old(cond)=1, \old(counter)=0, counter=11] [L10] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=11] [L39] RET __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) VAL [\old(counter)=0, c=10, counter=11, k=255, x=220825, y=10] [L40] CALL __VERIFIER_assert(k*y == y*y) VAL [\old(cond)=0, \old(counter)=0, counter=11] [L10] COND TRUE !(cond) VAL [\old(cond)=0, \old(counter)=0, cond=0, counter=11] [L12] reach_error() VAL [\old(cond)=0, \old(counter)=0, cond=0, counter=11] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 221.5s, OverallIterations: 14, TraceHistogramMax: 12, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.0s, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 179 SdHoareTripleChecker+Valid, 1.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 172 mSDsluCounter, 2420 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2053 mSDsCounter, 57 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2591 IncrementalHoareTripleChecker+Invalid, 2648 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 57 mSolverCounterUnsat, 367 mSDtfsCounter, 2591 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1494 GetRequests, 1144 SyntacticMatches, 5 SemanticMatches, 345 ConstructedPredicates, 14 IntricatePredicates, 0 DeprecatedPredicates, 2264 ImplicationChecksByTransitivity, 47.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=101occurred in iteration=8, InterpolantAutomatonStates: 150, 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, 13 MinimizatonAttempts, 34 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 19.4s SatisfiabilityAnalysisTime, 185.8s InterpolantComputationTime, 742 NumberOfCodeBlocks, 719 NumberOfCodeBlocksAsserted, 34 NumberOfCheckSat, 751 ConstructedInterpolants, 0 QuantifiedInterpolants, 3248 SizeOfPredicates, 38 NumberOfNonLiveVariables, 1942 ConjunctsInSsa, 325 ConjunctsInUnsatCore, 17 InterpolantComputations, 3 PerfectInterpolantSequences, 970/1702 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! [2023-04-02 23:35:15,703 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...