/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/egcd2-ll_valuebound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 22:53:29,842 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 22:53:29,843 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 22:53:29,861 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 22:53:29,861 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 22:53:29,862 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 22:53:29,862 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 22:53:29,864 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 22:53:29,866 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 22:53:29,870 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 22:53:29,871 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 22:53:29,874 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 22:53:29,875 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 22:53:29,877 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 22:53:29,878 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 22:53:29,879 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 22:53:29,879 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 22:53:29,879 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 22:53:29,880 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 22:53:29,881 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 22:53:29,882 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 22:53:29,884 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 22:53:29,886 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 22:53:29,887 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 22:53:29,892 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-02 22:53:29,893 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 22:53:29,894 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 22:53:29,894 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 22:53:29,895 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 22:53:29,895 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 22:53:29,895 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 22:53:29,896 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 22:53:29,896 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 22:53:29,896 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 22:53:29,896 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 22:53:29,897 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 22:53:29,903 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 22:53:29,925 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 22:53:29,925 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 22:53:29,925 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 22:53:29,926 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 22:53:29,926 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 22:53:29,926 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 22:53:29,926 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-02 22:53:29,926 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-02 22:53:29,927 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-02 22:53:29,927 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-02 22:53:29,927 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-02 22:53:29,927 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-02 22:53:29,927 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-02 22:53:29,928 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-02 22:53:29,928 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-02 22:53:29,928 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-02 22:53:29,928 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-02 22:53:29,928 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-02 22:53:29,928 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 22:53:29,928 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 22:53:29,928 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 22:53:29,929 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 22:53:29,929 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 22:53:29,929 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 22:53:29,929 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 22:53:29,929 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 22:53:29,929 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 22:53:29,929 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 22:53:29,929 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 22:53:29,930 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 22:53:29,930 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 22:53:29,930 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 22:53:29,930 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 22:53:29,930 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 22:53:29,930 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-02 22:53:29,930 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 22:53:29,930 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 22:53:29,930 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-02 22:53:29,930 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 22:53:29,931 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 22:53:29,931 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-02 22:53:29,931 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-02 22:53:30,131 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 22:53:30,149 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 22:53:30,151 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 22:53:30,152 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 22:53:30,152 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 22:53:30,153 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound2.c [2023-04-02 22:53:31,171 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 22:53:31,307 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 22:53:31,307 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound2.c [2023-04-02 22:53:31,311 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7076583c0/447b96f6c15249c09438ace6d9097072/FLAG5bb5d9661 [2023-04-02 22:53:31,319 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7076583c0/447b96f6c15249c09438ace6d9097072 [2023-04-02 22:53:31,321 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 22:53:31,322 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 22:53:31,323 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 22:53:31,323 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 22:53:31,325 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 22:53:31,325 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 10:53:31" (1/1) ... [2023-04-02 22:53:31,326 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@348eab6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:53:31, skipping insertion in model container [2023-04-02 22:53:31,326 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 10:53:31" (1/1) ... [2023-04-02 22:53:31,330 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 22:53:31,339 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 22:53:31,416 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/egcd2-ll_valuebound2.c[490,503] [2023-04-02 22:53:31,429 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 22:53:31,434 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 22:53:31,441 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/egcd2-ll_valuebound2.c[490,503] [2023-04-02 22:53:31,446 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 22:53:31,454 INFO L208 MainTranslator]: Completed translation [2023-04-02 22:53:31,455 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:53:31 WrapperNode [2023-04-02 22:53:31,455 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 22:53:31,455 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 22:53:31,455 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 22:53:31,455 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 22:53:31,462 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:53:31" (1/1) ... [2023-04-02 22:53:31,463 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:53:31" (1/1) ... [2023-04-02 22:53:31,466 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:53:31" (1/1) ... [2023-04-02 22:53:31,466 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:53:31" (1/1) ... [2023-04-02 22:53:31,473 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:53:31" (1/1) ... [2023-04-02 22:53:31,475 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:53:31" (1/1) ... [2023-04-02 22:53:31,476 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:53:31" (1/1) ... [2023-04-02 22:53:31,476 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:53:31" (1/1) ... [2023-04-02 22:53:31,477 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 22:53:31,478 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 22:53:31,478 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 22:53:31,478 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 22:53:31,478 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:53:31" (1/1) ... [2023-04-02 22:53:31,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 22:53:31,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:53:31,517 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 22:53:31,535 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 22:53:31,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 22:53:31,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 22:53:31,553 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 22:53:31,554 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-02 22:53:31,554 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-04-02 22:53:31,554 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 22:53:31,554 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 22:53:31,554 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 22:53:31,554 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 22:53:31,554 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 22:53:31,554 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-02 22:53:31,554 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-02 22:53:31,555 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-04-02 22:53:31,555 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 22:53:31,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 22:53:31,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 22:53:31,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 22:53:31,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 22:53:31,555 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 22:53:31,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 22:53:31,605 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 22:53:31,606 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 22:53:31,752 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 22:53:31,770 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 22:53:31,770 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-04-02 22:53:31,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 10:53:31 BoogieIcfgContainer [2023-04-02 22:53:31,772 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 22:53:31,773 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 22:53:31,773 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 22:53:31,775 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 22:53:31,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 10:53:31" (1/3) ... [2023-04-02 22:53:31,776 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@468094be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 10:53:31, skipping insertion in model container [2023-04-02 22:53:31,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:53:31" (2/3) ... [2023-04-02 22:53:31,776 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@468094be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 10:53:31, skipping insertion in model container [2023-04-02 22:53:31,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 10:53:31" (3/3) ... [2023-04-02 22:53:31,777 INFO L112 eAbstractionObserver]: Analyzing ICFG egcd2-ll_valuebound2.c [2023-04-02 22:53:31,787 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 22:53:31,787 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 22:53:31,815 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 22:53:31,820 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;@138fe08a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-02 22:53:31,820 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 22:53:31,822 INFO L276 IsEmpty]: Start isEmpty. Operand has 36 states, 16 states have (on average 1.375) internal successors, (22), 18 states have internal predecessors, (22), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-04-02 22:53:31,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-04-02 22:53:31,827 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 22:53:31,827 INFO L195 NwaCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 22:53:31,828 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 22:53:31,831 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 22:53:31,831 INFO L85 PathProgramCache]: Analyzing trace with hash -106415626, now seen corresponding path program 1 times [2023-04-02 22:53:31,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 22:53:31,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306662545] [2023-04-02 22:53:31,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:53:31,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 22:53:31,910 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 22:53:31,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1885885089] [2023-04-02 22:53:31,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:53:31,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:53:31,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:53:31,913 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 22:53:31,914 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 22:53:31,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 22:53:31,986 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 1 conjunts are in the unsatisfiable core [2023-04-02 22:53:31,990 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 22:53:32,034 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-04-02 22:53:32,034 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 22:53:32,035 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 22:53:32,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306662545] [2023-04-02 22:53:32,035 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 22:53:32,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1885885089] [2023-04-02 22:53:32,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1885885089] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 22:53:32,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 22:53:32,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-04-02 22:53:32,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601093041] [2023-04-02 22:53:32,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 22:53:32,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-04-02 22:53:32,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 22:53:32,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-04-02 22:53:32,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-02 22:53:32,065 INFO L87 Difference]: Start difference. First operand has 36 states, 16 states have (on average 1.375) internal successors, (22), 18 states have internal predecessors, (22), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-04-02 22:53:32,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 22:53:32,083 INFO L93 Difference]: Finished difference Result 57 states and 86 transitions. [2023-04-02 22:53:32,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-04-02 22:53:32,085 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 30 [2023-04-02 22:53:32,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 22:53:32,089 INFO L225 Difference]: With dead ends: 57 [2023-04-02 22:53:32,089 INFO L226 Difference]: Without dead ends: 32 [2023-04-02 22:53:32,091 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 29 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 22:53:32,093 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-02 22:53:32,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 44 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 22:53:32,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-04-02 22:53:32,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2023-04-02 22:53:32,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 16 states have internal predecessors, (17), 14 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-04-02 22:53:32,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 43 transitions. [2023-04-02 22:53:32,116 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 43 transitions. Word has length 30 [2023-04-02 22:53:32,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 22:53:32,118 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 43 transitions. [2023-04-02 22:53:32,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-04-02 22:53:32,118 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 43 transitions. [2023-04-02 22:53:32,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-04-02 22:53:32,120 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 22:53:32,120 INFO L195 NwaCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 22:53:32,125 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-04-02 22:53:32,325 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 22:53:32,326 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 22:53:32,327 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 22:53:32,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1527902876, now seen corresponding path program 1 times [2023-04-02 22:53:32,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 22:53:32,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541862362] [2023-04-02 22:53:32,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:53:32,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 22:53:32,355 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 22:53:32,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [999577876] [2023-04-02 22:53:32,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:53:32,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:53:32,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:53:32,360 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 22:53:32,361 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 22:53:32,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 22:53:32,416 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 7 conjunts are in the unsatisfiable core [2023-04-02 22:53:32,418 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 22:53:32,478 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-04-02 22:53:32,479 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 22:53:32,535 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-04-02 22:53:32,535 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 22:53:32,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541862362] [2023-04-02 22:53:32,535 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 22:53:32,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [999577876] [2023-04-02 22:53:32,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [999577876] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 22:53:32,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [420598316] [2023-04-02 22:53:32,548 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2023-04-02 22:53:32,548 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 22:53:32,550 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 22:53:32,553 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 22:53:32,553 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 22:53:32,615 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-02 22:53:32,941 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 9 for LOIs [2023-04-02 22:53:32,942 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-02 22:53:32,947 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 22:53:33,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [420598316] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 22:53:33,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-04-02 22:53:33,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [5, 5] total 18 [2023-04-02 22:53:33,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507081870] [2023-04-02 22:53:33,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 22:53:33,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-04-02 22:53:33,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 22:53:33,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-04-02 22:53:33,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2023-04-02 22:53:33,250 INFO L87 Difference]: Start difference. First operand 32 states and 43 transitions. Second operand has 15 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 9 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-04-02 22:53:33,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 22:53:33,968 INFO L93 Difference]: Finished difference Result 42 states and 54 transitions. [2023-04-02 22:53:33,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-02 22:53:33,968 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 9 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Word has length 31 [2023-04-02 22:53:33,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 22:53:33,969 INFO L225 Difference]: With dead ends: 42 [2023-04-02 22:53:33,969 INFO L226 Difference]: Without dead ends: 34 [2023-04-02 22:53:33,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 74 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=197, Invalid=505, Unknown=0, NotChecked=0, Total=702 [2023-04-02 22:53:33,971 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 68 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 22:53:33,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 4 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 22:53:33,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2023-04-02 22:53:33,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2023-04-02 22:53:33,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 14 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-04-02 22:53:33,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 45 transitions. [2023-04-02 22:53:33,980 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 45 transitions. Word has length 31 [2023-04-02 22:53:33,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 22:53:33,981 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 45 transitions. [2023-04-02 22:53:33,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 9 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-04-02 22:53:33,981 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 45 transitions. [2023-04-02 22:53:33,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-04-02 22:53:33,981 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 22:53:33,982 INFO L195 NwaCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 22:53:33,988 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-02 22:53:34,186 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 22:53:34,186 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 22:53:34,187 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 22:53:34,187 INFO L85 PathProgramCache]: Analyzing trace with hash -115048975, now seen corresponding path program 1 times [2023-04-02 22:53:34,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 22:53:34,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884040343] [2023-04-02 22:53:34,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:53:34,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 22:53:34,199 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 22:53:34,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1444446448] [2023-04-02 22:53:34,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:53:34,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:53:34,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:53:34,200 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 22:53:34,202 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 22:53:34,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 22:53:34,238 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 17 conjunts are in the unsatisfiable core [2023-04-02 22:53:34,240 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 22:53:34,279 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-04-02 22:53:34,279 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 22:53:34,323 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-04-02 22:53:34,323 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 22:53:34,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884040343] [2023-04-02 22:53:34,323 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 22:53:34,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1444446448] [2023-04-02 22:53:34,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1444446448] provided 1 perfect and 1 imperfect interpolant sequences [2023-04-02 22:53:34,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 22:53:34,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2023-04-02 22:53:34,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496251420] [2023-04-02 22:53:34,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 22:53:34,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 22:53:34,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 22:53:34,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 22:53:34,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-04-02 22:53:34,325 INFO L87 Difference]: Start difference. First operand 34 states and 45 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-04-02 22:53:34,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 22:53:34,365 INFO L93 Difference]: Finished difference Result 40 states and 50 transitions. [2023-04-02 22:53:34,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-02 22:53:34,365 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 32 [2023-04-02 22:53:34,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 22:53:34,366 INFO L225 Difference]: With dead ends: 40 [2023-04-02 22:53:34,366 INFO L226 Difference]: Without dead ends: 38 [2023-04-02 22:53:34,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-04-02 22:53:34,367 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 7 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-02 22:53:34,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 116 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 22:53:34,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-04-02 22:53:34,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2023-04-02 22:53:34,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 20 states have internal predecessors, (22), 14 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-04-02 22:53:34,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 48 transitions. [2023-04-02 22:53:34,380 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 48 transitions. Word has length 32 [2023-04-02 22:53:34,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 22:53:34,380 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 48 transitions. [2023-04-02 22:53:34,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-04-02 22:53:34,380 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 48 transitions. [2023-04-02 22:53:34,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-04-02 22:53:34,381 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 22:53:34,381 INFO L195 NwaCegarLoop]: trace histogram [6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 22:53:34,387 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-04-02 22:53:34,585 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 22:53:34,585 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 22:53:34,586 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 22:53:34,586 INFO L85 PathProgramCache]: Analyzing trace with hash 479602003, now seen corresponding path program 1 times [2023-04-02 22:53:34,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 22:53:34,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974140040] [2023-04-02 22:53:34,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:53:34,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 22:53:34,599 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 22:53:34,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1994843886] [2023-04-02 22:53:34,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:53:34,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:53:34,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:53:34,633 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 22:53:34,634 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 22:53:34,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 22:53:34,673 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 37 conjunts are in the unsatisfiable core [2023-04-02 22:53:34,674 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 22:53:34,828 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-04-02 22:53:34,829 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 22:53:34,946 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-04-02 22:53:34,946 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 22:53:34,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974140040] [2023-04-02 22:53:34,947 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 22:53:34,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1994843886] [2023-04-02 22:53:34,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1994843886] provided 1 perfect and 1 imperfect interpolant sequences [2023-04-02 22:53:34,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 22:53:34,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 14 [2023-04-02 22:53:34,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703135992] [2023-04-02 22:53:34,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 22:53:34,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 22:53:34,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 22:53:34,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 22:53:34,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2023-04-02 22:53:34,948 INFO L87 Difference]: Start difference. First operand 38 states and 48 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-04-02 22:53:34,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 22:53:34,992 INFO L93 Difference]: Finished difference Result 51 states and 65 transitions. [2023-04-02 22:53:34,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-02 22:53:34,992 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 37 [2023-04-02 22:53:34,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 22:53:34,993 INFO L225 Difference]: With dead ends: 51 [2023-04-02 22:53:34,993 INFO L226 Difference]: Without dead ends: 49 [2023-04-02 22:53:34,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2023-04-02 22:53:34,994 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 6 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-02 22:53:34,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 125 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 22:53:34,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2023-04-02 22:53:35,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 48. [2023-04-02 22:53:35,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 25 states have internal predecessors, (28), 18 states have call successors, (18), 6 states have call predecessors, (18), 5 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-04-02 22:53:35,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 62 transitions. [2023-04-02 22:53:35,006 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 62 transitions. Word has length 37 [2023-04-02 22:53:35,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 22:53:35,007 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 62 transitions. [2023-04-02 22:53:35,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-04-02 22:53:35,007 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 62 transitions. [2023-04-02 22:53:35,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-04-02 22:53:35,008 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 22:53:35,008 INFO L195 NwaCegarLoop]: trace histogram [6, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 22:53:35,015 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 22:53:35,213 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 22:53:35,213 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 22:53:35,213 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 22:53:35,213 INFO L85 PathProgramCache]: Analyzing trace with hash 409789169, now seen corresponding path program 1 times [2023-04-02 22:53:35,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 22:53:35,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264375442] [2023-04-02 22:53:35,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:53:35,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 22:53:35,222 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 22:53:35,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1503166872] [2023-04-02 22:53:35,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:53:35,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:53:35,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:53:35,226 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 22:53:35,239 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 22:53:35,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 22:53:35,296 INFO L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 27 conjunts are in the unsatisfiable core [2023-04-02 22:53:35,304 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 22:53:35,409 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-04-02 22:53:35,409 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 22:53:35,456 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 22:53:35,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264375442] [2023-04-02 22:53:35,457 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 22:53:35,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1503166872] [2023-04-02 22:53:35,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1503166872] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 22:53:35,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1347370447] [2023-04-02 22:53:35,459 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2023-04-02 22:53:35,459 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 22:53:35,459 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 22:53:35,459 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 22:53:35,459 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 22:53:35,472 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-02 22:53:35,717 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 11 for LOIs [2023-04-02 22:53:35,720 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 9 for LOIs [2023-04-02 22:53:35,721 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-02 22:53:35,723 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 22:53:36,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1347370447] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 22:53:36,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 22:53:36,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [10] total 26 [2023-04-02 22:53:36,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138396389] [2023-04-02 22:53:36,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 22:53:36,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-04-02 22:53:36,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 22:53:36,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-04-02 22:53:36,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=660, Unknown=0, NotChecked=0, Total=812 [2023-04-02 22:53:36,151 INFO L87 Difference]: Start difference. First operand 48 states and 62 transitions. Second operand has 18 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 9 states have internal predecessors, (13), 9 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2023-04-02 22:53:37,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 22:53:37,094 INFO L93 Difference]: Finished difference Result 69 states and 85 transitions. [2023-04-02 22:53:37,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-02 22:53:37,097 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 9 states have internal predecessors, (13), 9 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) Word has length 42 [2023-04-02 22:53:37,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 22:53:37,097 INFO L225 Difference]: With dead ends: 69 [2023-04-02 22:53:37,097 INFO L226 Difference]: Without dead ends: 67 [2023-04-02 22:53:37,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 59 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 366 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=314, Invalid=1326, Unknown=0, NotChecked=0, Total=1640 [2023-04-02 22:53:37,099 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 95 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 22:53:37,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 9 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 22:53:37,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2023-04-02 22:53:37,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 64. [2023-04-02 22:53:37,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 34 states have (on average 1.1176470588235294) internal successors, (38), 36 states have internal predecessors, (38), 21 states have call successors, (21), 9 states have call predecessors, (21), 8 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2023-04-02 22:53:37,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 78 transitions. [2023-04-02 22:53:37,113 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 78 transitions. Word has length 42 [2023-04-02 22:53:37,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 22:53:37,113 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 78 transitions. [2023-04-02 22:53:37,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 9 states have internal predecessors, (13), 9 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2023-04-02 22:53:37,114 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 78 transitions. [2023-04-02 22:53:37,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-04-02 22:53:37,114 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 22:53:37,114 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 22:53:37,119 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-04-02 22:53:37,319 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 22:53:37,319 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 22:53:37,320 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 22:53:37,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1543565357, now seen corresponding path program 1 times [2023-04-02 22:53:37,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 22:53:37,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578473153] [2023-04-02 22:53:37,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:53:37,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 22:53:37,329 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 22:53:37,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [545973964] [2023-04-02 22:53:37,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:53:37,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:53:37,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:53:37,330 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 22:53:37,332 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 22:53:37,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 22:53:37,380 INFO L262 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 24 conjunts are in the unsatisfiable core [2023-04-02 22:53:37,382 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 22:53:37,460 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-04-02 22:53:37,460 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 22:53:37,509 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 22:53:37,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578473153] [2023-04-02 22:53:37,509 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 22:53:37,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [545973964] [2023-04-02 22:53:37,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [545973964] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 22:53:37,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [596904704] [2023-04-02 22:53:37,511 INFO L159 IcfgInterpreter]: Started Sifa with 28 locations of interest [2023-04-02 22:53:37,511 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 22:53:37,511 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 22:53:37,511 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 22:53:37,511 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 22:53:37,521 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-02 22:53:37,752 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 13 for LOIs [2023-04-02 22:53:37,757 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 9 for LOIs [2023-04-02 22:53:37,757 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-02 22:53:37,759 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 22:53:38,269 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1878#(and (<= 1 |#StackHeapBarrier|) (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (= |#NULL.base| 0))' at error location [2023-04-02 22:53:38,270 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 22:53:38,270 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-04-02 22:53:38,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2023-04-02 22:53:38,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982667284] [2023-04-02 22:53:38,270 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-04-02 22:53:38,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 22:53:38,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 22:53:38,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 22:53:38,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=579, Unknown=0, NotChecked=0, Total=702 [2023-04-02 22:53:38,271 INFO L87 Difference]: Start difference. First operand 64 states and 78 transitions. Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-04-02 22:53:38,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 22:53:38,355 INFO L93 Difference]: Finished difference Result 71 states and 84 transitions. [2023-04-02 22:53:38,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 22:53:38,355 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 47 [2023-04-02 22:53:38,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 22:53:38,357 INFO L225 Difference]: With dead ends: 71 [2023-04-02 22:53:38,357 INFO L226 Difference]: Without dead ends: 69 [2023-04-02 22:53:38,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 66 SyntacticMatches, 7 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=137, Invalid=675, Unknown=0, NotChecked=0, Total=812 [2023-04-02 22:53:38,358 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 12 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 22:53:38,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 113 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 22:53:38,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2023-04-02 22:53:38,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 68. [2023-04-02 22:53:38,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 37 states have (on average 1.1081081081081081) internal successors, (41), 39 states have internal predecessors, (41), 21 states have call successors, (21), 10 states have call predecessors, (21), 9 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2023-04-02 22:53:38,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 81 transitions. [2023-04-02 22:53:38,371 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 81 transitions. Word has length 47 [2023-04-02 22:53:38,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 22:53:38,371 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 81 transitions. [2023-04-02 22:53:38,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-04-02 22:53:38,372 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 81 transitions. [2023-04-02 22:53:38,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-04-02 22:53:38,373 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 22:53:38,373 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 22:53:38,377 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-04-02 22:53:38,577 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 22:53:38,577 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 22:53:38,578 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 22:53:38,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1081154470, now seen corresponding path program 1 times [2023-04-02 22:53:38,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 22:53:38,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80084973] [2023-04-02 22:53:38,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:53:38,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 22:53:38,587 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 22:53:38,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [749004239] [2023-04-02 22:53:38,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:53:38,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:53:38,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:53:38,602 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 22:53:38,603 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 22:53:38,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 22:53:38,655 INFO L262 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 9 conjunts are in the unsatisfiable core [2023-04-02 22:53:38,656 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 22:53:38,689 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-04-02 22:53:38,689 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 22:53:38,754 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-04-02 22:53:38,754 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 22:53:38,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80084973] [2023-04-02 22:53:38,754 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 22:53:38,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [749004239] [2023-04-02 22:53:38,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [749004239] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 22:53:38,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [60227928] [2023-04-02 22:53:38,756 INFO L159 IcfgInterpreter]: Started Sifa with 31 locations of interest [2023-04-02 22:53:38,756 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 22:53:38,756 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 22:53:38,757 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 22:53:38,757 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 22:53:38,766 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-02 22:53:43,043 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-04-02 22:53:43,046 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 9 for LOIs [2023-04-02 22:53:43,047 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-02 22:53:43,049 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 22:53:46,186 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2450#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-04-02 22:53:46,186 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 22:53:46,186 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-02 22:53:46,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2023-04-02 22:53:46,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083762862] [2023-04-02 22:53:46,186 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-02 22:53:46,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 22:53:46,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 22:53:46,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 22:53:46,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=505, Unknown=0, NotChecked=0, Total=650 [2023-04-02 22:53:46,187 INFO L87 Difference]: Start difference. First operand 68 states and 81 transitions. Second operand has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 5 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2023-04-02 22:53:46,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 22:53:46,332 INFO L93 Difference]: Finished difference Result 111 states and 149 transitions. [2023-04-02 22:53:46,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-02 22:53:46,355 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 5 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) Word has length 56 [2023-04-02 22:53:46,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 22:53:46,359 INFO L225 Difference]: With dead ends: 111 [2023-04-02 22:53:46,359 INFO L226 Difference]: Without dead ends: 103 [2023-04-02 22:53:46,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 137 SyntacticMatches, 6 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=188, Invalid=682, Unknown=0, NotChecked=0, Total=870 [2023-04-02 22:53:46,361 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 34 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 22:53:46,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 161 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 22:53:46,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2023-04-02 22:53:46,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 94. [2023-04-02 22:53:46,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 50 states have (on average 1.18) internal successors, (59), 51 states have internal predecessors, (59), 34 states have call successors, (34), 10 states have call predecessors, (34), 9 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-04-02 22:53:46,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 125 transitions. [2023-04-02 22:53:46,383 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 125 transitions. Word has length 56 [2023-04-02 22:53:46,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 22:53:46,383 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 125 transitions. [2023-04-02 22:53:46,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 5 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2023-04-02 22:53:46,384 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 125 transitions. [2023-04-02 22:53:46,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-04-02 22:53:46,384 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 22:53:46,384 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 22:53:46,391 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-04-02 22:53:46,589 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 22:53:46,589 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 22:53:46,590 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 22:53:46,590 INFO L85 PathProgramCache]: Analyzing trace with hash 167472073, now seen corresponding path program 1 times [2023-04-02 22:53:46,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 22:53:46,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627172977] [2023-04-02 22:53:46,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:53:46,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 22:53:46,599 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 22:53:46,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [634777783] [2023-04-02 22:53:46,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:53:46,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:53:46,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:53:46,610 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 22:53:46,611 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 22:53:46,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 22:53:46,655 INFO L262 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 36 conjunts are in the unsatisfiable core [2023-04-02 22:53:46,656 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 22:53:46,773 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 23 proven. 10 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-04-02 22:53:46,773 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 22:53:46,864 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 20 proven. 7 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-04-02 22:53:46,864 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 22:53:46,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627172977] [2023-04-02 22:53:46,864 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 22:53:46,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [634777783] [2023-04-02 22:53:46,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [634777783] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 22:53:46,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [959818446] [2023-04-02 22:53:46,867 INFO L159 IcfgInterpreter]: Started Sifa with 30 locations of interest [2023-04-02 22:53:46,867 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 22:53:46,867 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 22:53:46,867 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 22:53:46,867 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 22:53:46,877 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-02 22:53:50,723 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-04-02 22:53:50,724 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 9 for LOIs [2023-04-02 22:53:50,725 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-02 22:53:50,727 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 22:53:53,894 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3183#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-04-02 22:53:53,894 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 22:53:53,894 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-02 22:53:53,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 14 [2023-04-02 22:53:53,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076512429] [2023-04-02 22:53:53,894 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-02 22:53:53,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-02 22:53:53,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 22:53:53,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-02 22:53:53,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=831, Unknown=0, NotChecked=0, Total=992 [2023-04-02 22:53:53,896 INFO L87 Difference]: Start difference. First operand 94 states and 125 transitions. Second operand has 14 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 12 states have internal predecessors, (35), 7 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (19), 6 states have call predecessors, (19), 6 states have call successors, (19) [2023-04-02 22:53:54,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 22:53:54,190 INFO L93 Difference]: Finished difference Result 141 states and 193 transitions. [2023-04-02 22:53:54,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-02 22:53:54,190 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 12 states have internal predecessors, (35), 7 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (19), 6 states have call predecessors, (19), 6 states have call successors, (19) Word has length 62 [2023-04-02 22:53:54,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 22:53:54,191 INFO L225 Difference]: With dead ends: 141 [2023-04-02 22:53:54,192 INFO L226 Difference]: Without dead ends: 137 [2023-04-02 22:53:54,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 158 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=211, Invalid=1195, Unknown=0, NotChecked=0, Total=1406 [2023-04-02 22:53:54,193 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 48 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 22:53:54,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 173 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 22:53:54,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2023-04-02 22:53:54,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 105. [2023-04-02 22:53:54,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 57 states have (on average 1.1578947368421053) internal successors, (66), 59 states have internal predecessors, (66), 36 states have call successors, (36), 12 states have call predecessors, (36), 11 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2023-04-02 22:53:54,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 136 transitions. [2023-04-02 22:53:54,216 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 136 transitions. Word has length 62 [2023-04-02 22:53:54,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 22:53:54,216 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 136 transitions. [2023-04-02 22:53:54,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 12 states have internal predecessors, (35), 7 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (19), 6 states have call predecessors, (19), 6 states have call successors, (19) [2023-04-02 22:53:54,217 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 136 transitions. [2023-04-02 22:53:54,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-04-02 22:53:54,217 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 22:53:54,218 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 22:53:54,238 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-04-02 22:53:54,422 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 22:53:54,423 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 22:53:54,423 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 22:53:54,423 INFO L85 PathProgramCache]: Analyzing trace with hash -21023173, now seen corresponding path program 2 times [2023-04-02 22:53:54,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 22:53:54,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059584986] [2023-04-02 22:53:54,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:53:54,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 22:53:54,450 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 22:53:54,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1098011922] [2023-04-02 22:53:54,451 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-04-02 22:53:54,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:53:54,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:53:54,452 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 22:53:54,454 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 22:53:54,500 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-04-02 22:53:54,500 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 22:53:54,500 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 33 conjunts are in the unsatisfiable core [2023-04-02 22:53:54,502 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 22:53:54,612 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 17 proven. 6 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2023-04-02 22:53:54,612 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 22:53:54,642 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 22:53:54,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059584986] [2023-04-02 22:53:54,642 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 22:53:54,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1098011922] [2023-04-02 22:53:54,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1098011922] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 22:53:54,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1512635512] [2023-04-02 22:53:54,647 INFO L159 IcfgInterpreter]: Started Sifa with 30 locations of interest [2023-04-02 22:53:54,647 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 22:53:54,648 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 22:53:54,648 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 22:53:54,648 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 22:53:54,670 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-02 22:53:58,456 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-04-02 22:53:58,458 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 9 for LOIs [2023-04-02 22:53:58,459 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-02 22:53:58,461 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 22:54:02,052 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3831#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-04-02 22:54:02,053 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 22:54:02,053 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-04-02 22:54:02,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2023-04-02 22:54:02,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434743200] [2023-04-02 22:54:02,053 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-04-02 22:54:02,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 22:54:02,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 22:54:02,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 22:54:02,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=731, Unknown=0, NotChecked=0, Total=870 [2023-04-02 22:54:02,054 INFO L87 Difference]: Start difference. First operand 105 states and 136 transitions. Second operand has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 4 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-04-02 22:54:02,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 22:54:02,221 INFO L93 Difference]: Finished difference Result 133 states and 172 transitions. [2023-04-02 22:54:02,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-02 22:54:02,221 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 4 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 67 [2023-04-02 22:54:02,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 22:54:02,222 INFO L225 Difference]: With dead ends: 133 [2023-04-02 22:54:02,222 INFO L226 Difference]: Without dead ends: 131 [2023-04-02 22:54:02,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 108 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=152, Invalid=840, Unknown=0, NotChecked=0, Total=992 [2023-04-02 22:54:02,224 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 14 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 22:54:02,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 148 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 22:54:02,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2023-04-02 22:54:02,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 128. [2023-04-02 22:54:02,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 70 states have (on average 1.1571428571428573) internal successors, (81), 72 states have internal predecessors, (81), 44 states have call successors, (44), 14 states have call predecessors, (44), 13 states have return successors, (42), 41 states have call predecessors, (42), 42 states have call successors, (42) [2023-04-02 22:54:02,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 167 transitions. [2023-04-02 22:54:02,270 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 167 transitions. Word has length 67 [2023-04-02 22:54:02,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 22:54:02,271 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 167 transitions. [2023-04-02 22:54:02,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 4 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-04-02 22:54:02,271 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 167 transitions. [2023-04-02 22:54:02,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-04-02 22:54:02,272 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 22:54:02,272 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 22:54:02,282 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-04-02 22:54:02,480 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 22:54:02,481 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 22:54:02,482 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 22:54:02,482 INFO L85 PathProgramCache]: Analyzing trace with hash 24066761, now seen corresponding path program 3 times [2023-04-02 22:54:02,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 22:54:02,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992970360] [2023-04-02 22:54:02,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:54:02,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 22:54:02,489 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 22:54:02,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [33099952] [2023-04-02 22:54:02,489 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-04-02 22:54:02,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:54:02,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:54:02,490 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 22:54:02,517 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 22:54:02,566 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-04-02 22:54:02,567 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 22:54:02,571 INFO L262 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 49 conjunts are in the unsatisfiable core [2023-04-02 22:54:02,573 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 22:54:03,050 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 29 proven. 27 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2023-04-02 22:54:03,052 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 22:54:06,311 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 27 proven. 24 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-04-02 22:54:06,311 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 22:54:06,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992970360] [2023-04-02 22:54:06,311 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 22:54:06,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [33099952] [2023-04-02 22:54:06,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [33099952] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 22:54:06,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [17183128] [2023-04-02 22:54:06,313 INFO L159 IcfgInterpreter]: Started Sifa with 30 locations of interest [2023-04-02 22:54:06,313 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 22:54:06,313 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 22:54:06,313 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 22:54:06,313 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 22:54:06,321 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-02 22:54:09,918 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-04-02 22:54:09,920 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 9 for LOIs [2023-04-02 22:54:09,921 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-02 22:54:09,923 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 22:54:14,077 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4710#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-04-02 22:54:14,077 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 22:54:14,077 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-02 22:54:14,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 22 [2023-04-02 22:54:14,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587391136] [2023-04-02 22:54:14,082 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-02 22:54:14,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-04-02 22:54:14,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 22:54:14,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-04-02 22:54:14,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=1350, Unknown=0, NotChecked=0, Total=1560 [2023-04-02 22:54:14,084 INFO L87 Difference]: Start difference. First operand 128 states and 167 transitions. Second operand has 22 states, 20 states have (on average 1.8) internal successors, (36), 17 states have internal predecessors, (36), 11 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (25), 9 states have call predecessors, (25), 10 states have call successors, (25) [2023-04-02 22:54:20,510 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-04-02 22:54:22,512 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-04-02 22:54:27,398 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-04-02 22:54:36,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 22:54:36,002 INFO L93 Difference]: Finished difference Result 149 states and 195 transitions. [2023-04-02 22:54:36,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-04-02 22:54:36,002 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 1.8) internal successors, (36), 17 states have internal predecessors, (36), 11 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (25), 9 states have call predecessors, (25), 10 states have call successors, (25) Word has length 72 [2023-04-02 22:54:36,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 22:54:36,003 INFO L225 Difference]: With dead ends: 149 [2023-04-02 22:54:36,003 INFO L226 Difference]: Without dead ends: 147 [2023-04-02 22:54:36,004 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 174 SyntacticMatches, 4 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 872 ImplicationChecksByTransitivity, 16.6s TimeCoverageRelationStatistics Valid=410, Invalid=2451, Unknown=1, NotChecked=0, Total=2862 [2023-04-02 22:54:36,004 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 105 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 118 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2023-04-02 22:54:36,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 132 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 447 Invalid, 3 Unknown, 0 Unchecked, 12.1s Time] [2023-04-02 22:54:36,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2023-04-02 22:54:36,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 142. [2023-04-02 22:54:36,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 78 states have (on average 1.1666666666666667) internal successors, (91), 80 states have internal predecessors, (91), 49 states have call successors, (49), 15 states have call predecessors, (49), 14 states have return successors, (47), 46 states have call predecessors, (47), 47 states have call successors, (47) [2023-04-02 22:54:36,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 187 transitions. [2023-04-02 22:54:36,053 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 187 transitions. Word has length 72 [2023-04-02 22:54:36,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 22:54:36,054 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 187 transitions. [2023-04-02 22:54:36,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 1.8) internal successors, (36), 17 states have internal predecessors, (36), 11 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (25), 9 states have call predecessors, (25), 10 states have call successors, (25) [2023-04-02 22:54:36,054 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 187 transitions. [2023-04-02 22:54:36,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-04-02 22:54:36,055 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 22:54:36,055 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 22:54:36,060 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-04-02 22:54:36,260 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 22:54:36,260 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 22:54:36,260 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 22:54:36,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1114380903, now seen corresponding path program 1 times [2023-04-02 22:54:36,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 22:54:36,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680816304] [2023-04-02 22:54:36,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:54:36,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 22:54:36,268 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 22:54:36,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [272359803] [2023-04-02 22:54:36,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:54:36,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:54:36,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:54:36,276 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 22:54:36,277 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 22:54:36,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 22:54:36,338 INFO L262 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 43 conjunts are in the unsatisfiable core [2023-04-02 22:54:36,340 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 22:54:36,756 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 17 proven. 15 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2023-04-02 22:54:36,756 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 22:54:37,029 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 16 proven. 13 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2023-04-02 22:54:37,029 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 22:54:37,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680816304] [2023-04-02 22:54:37,029 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 22:54:37,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [272359803] [2023-04-02 22:54:37,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [272359803] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 22:54:37,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1309347441] [2023-04-02 22:54:37,034 INFO L159 IcfgInterpreter]: Started Sifa with 31 locations of interest [2023-04-02 22:54:37,034 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 22:54:37,034 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 22:54:37,034 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 22:54:37,034 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 22:54:37,050 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-02 22:54:41,323 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 9 for LOIs [2023-04-02 22:54:41,325 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 9 for LOIs [2023-04-02 22:54:41,326 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-02 22:54:41,328 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 22:54:43,196 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5695#(and (<= 1 |#StackHeapBarrier|) (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (= |#NULL.base| 0))' at error location [2023-04-02 22:54:43,196 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 22:54:43,196 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-02 22:54:43,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 20 [2023-04-02 22:54:43,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80817887] [2023-04-02 22:54:43,197 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-02 22:54:43,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-04-02 22:54:43,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 22:54:43,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-04-02 22:54:43,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=1320, Unknown=0, NotChecked=0, Total=1560 [2023-04-02 22:54:43,198 INFO L87 Difference]: Start difference. First operand 142 states and 187 transitions. Second operand has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 17 states have internal predecessors, (34), 12 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (29), 10 states have call predecessors, (29), 10 states have call successors, (29) [2023-04-02 22:54:46,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 22:54:46,216 INFO L93 Difference]: Finished difference Result 234 states and 336 transitions. [2023-04-02 22:54:46,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-04-02 22:54:46,225 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 17 states have internal predecessors, (34), 12 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (29), 10 states have call predecessors, (29), 10 states have call successors, (29) Word has length 78 [2023-04-02 22:54:46,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 22:54:46,228 INFO L225 Difference]: With dead ends: 234 [2023-04-02 22:54:46,228 INFO L226 Difference]: Without dead ends: 225 [2023-04-02 22:54:46,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 899 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=494, Invalid=3046, Unknown=0, NotChecked=0, Total=3540 [2023-04-02 22:54:46,230 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 109 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 826 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-04-02 22:54:46,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 349 Invalid, 955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 826 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-04-02 22:54:46,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2023-04-02 22:54:46,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 192. [2023-04-02 22:54:46,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 100 states have (on average 1.19) internal successors, (119), 103 states have internal predecessors, (119), 77 states have call successors, (77), 15 states have call predecessors, (77), 14 states have return successors, (75), 73 states have call predecessors, (75), 75 states have call successors, (75) [2023-04-02 22:54:46,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 271 transitions. [2023-04-02 22:54:46,322 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 271 transitions. Word has length 78 [2023-04-02 22:54:46,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 22:54:46,322 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 271 transitions. [2023-04-02 22:54:46,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 17 states have internal predecessors, (34), 12 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (29), 10 states have call predecessors, (29), 10 states have call successors, (29) [2023-04-02 22:54:46,323 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 271 transitions. [2023-04-02 22:54:46,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-04-02 22:54:46,323 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 22:54:46,324 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 6, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 22:54:46,330 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 22:54:46,528 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 22:54:46,528 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 22:54:46,529 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 22:54:46,529 INFO L85 PathProgramCache]: Analyzing trace with hash 301418396, now seen corresponding path program 1 times [2023-04-02 22:54:46,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 22:54:46,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235925032] [2023-04-02 22:54:46,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:54:46,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 22:54:46,536 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 22:54:46,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1616244066] [2023-04-02 22:54:46,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:54:46,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:54:46,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:54:46,547 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 22:54:46,548 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 22:54:46,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 22:54:46,600 INFO L262 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 14 conjunts are in the unsatisfiable core [2023-04-02 22:54:46,601 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 22:54:46,681 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 88 proven. 13 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-04-02 22:54:46,682 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 22:54:46,791 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 28 proven. 13 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2023-04-02 22:54:46,791 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 22:54:46,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235925032] [2023-04-02 22:54:46,792 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 22:54:46,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1616244066] [2023-04-02 22:54:46,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1616244066] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 22:54:46,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1531916444] [2023-04-02 22:54:46,793 INFO L159 IcfgInterpreter]: Started Sifa with 30 locations of interest [2023-04-02 22:54:46,793 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 22:54:46,793 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 22:54:46,793 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 22:54:46,793 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 22:54:46,804 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-02 22:54:50,989 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 9 for LOIs [2023-04-02 22:54:50,992 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 9 for LOIs [2023-04-02 22:54:50,992 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-02 22:54:50,994 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 22:54:52,031 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6984#(and (<= 1 |#StackHeapBarrier|) (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (= |#NULL.base| 0))' at error location [2023-04-02 22:54:52,031 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 22:54:52,031 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-02 22:54:52,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2023-04-02 22:54:52,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850705008] [2023-04-02 22:54:52,032 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-02 22:54:52,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-02 22:54:52,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 22:54:52,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-02 22:54:52,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=691, Unknown=0, NotChecked=0, Total=870 [2023-04-02 22:54:52,033 INFO L87 Difference]: Start difference. First operand 192 states and 271 transitions. Second operand has 11 states, 10 states have (on average 2.9) internal successors, (29), 11 states have internal predecessors, (29), 8 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (27), 8 states have call predecessors, (27), 8 states have call successors, (27) [2023-04-02 22:54:52,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 22:54:52,403 INFO L93 Difference]: Finished difference Result 238 states and 329 transitions. [2023-04-02 22:54:52,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-02 22:54:52,404 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.9) internal successors, (29), 11 states have internal predecessors, (29), 8 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (27), 8 states have call predecessors, (27), 8 states have call successors, (27) Word has length 89 [2023-04-02 22:54:52,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 22:54:52,405 INFO L225 Difference]: With dead ends: 238 [2023-04-02 22:54:52,405 INFO L226 Difference]: Without dead ends: 155 [2023-04-02 22:54:52,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 235 SyntacticMatches, 3 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 361 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=314, Invalid=1326, Unknown=0, NotChecked=0, Total=1640 [2023-04-02 22:54:52,406 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 62 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 22:54:52,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 150 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 22:54:52,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2023-04-02 22:54:52,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 154. [2023-04-02 22:54:52,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 82 states have (on average 1.1585365853658536) internal successors, (95), 84 states have internal predecessors, (95), 57 states have call successors, (57), 15 states have call predecessors, (57), 14 states have return successors, (55), 54 states have call predecessors, (55), 55 states have call successors, (55) [2023-04-02 22:54:52,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 207 transitions. [2023-04-02 22:54:52,464 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 207 transitions. Word has length 89 [2023-04-02 22:54:52,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 22:54:52,465 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 207 transitions. [2023-04-02 22:54:52,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.9) internal successors, (29), 11 states have internal predecessors, (29), 8 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (27), 8 states have call predecessors, (27), 8 states have call successors, (27) [2023-04-02 22:54:52,465 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 207 transitions. [2023-04-02 22:54:52,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-04-02 22:54:52,467 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 22:54:52,467 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 6, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 22:54:52,474 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-04-02 22:54:52,671 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 22:54:52,672 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 22:54:52,672 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 22:54:52,672 INFO L85 PathProgramCache]: Analyzing trace with hash 2003978801, now seen corresponding path program 4 times [2023-04-02 22:54:52,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 22:54:52,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490729974] [2023-04-02 22:54:52,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:54:52,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 22:54:52,679 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 22:54:52,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [822548971] [2023-04-02 22:54:52,679 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-04-02 22:54:52,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:54:52,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:54:52,680 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 22:54:52,683 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 22:54:52,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 22:54:52,749 INFO L262 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 5 conjunts are in the unsatisfiable core [2023-04-02 22:54:52,751 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 22:54:52,776 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2023-04-02 22:54:52,776 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 22:54:52,776 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 22:54:52,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490729974] [2023-04-02 22:54:52,777 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 22:54:52,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [822548971] [2023-04-02 22:54:52,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [822548971] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 22:54:52,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 22:54:52,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 22:54:52,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094518828] [2023-04-02 22:54:52,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 22:54:52,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 22:54:52,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 22:54:52,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 22:54:52,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-02 22:54:52,779 INFO L87 Difference]: Start difference. First operand 154 states and 207 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 3 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2023-04-02 22:54:52,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 22:54:52,880 INFO L93 Difference]: Finished difference Result 205 states and 276 transitions. [2023-04-02 22:54:52,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-02 22:54:52,880 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 3 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 92 [2023-04-02 22:54:52,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 22:54:52,884 INFO L225 Difference]: With dead ends: 205 [2023-04-02 22:54:52,884 INFO L226 Difference]: Without dead ends: 139 [2023-04-02 22:54:52,886 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-04-02 22:54:52,891 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 7 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-02 22:54:52,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 137 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 22:54:52,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2023-04-02 22:54:52,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 130. [2023-04-02 22:54:52,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 70 states have (on average 1.1) internal successors, (77), 72 states have internal predecessors, (77), 45 states have call successors, (45), 15 states have call predecessors, (45), 14 states have return successors, (43), 42 states have call predecessors, (43), 43 states have call successors, (43) [2023-04-02 22:54:52,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 165 transitions. [2023-04-02 22:54:52,972 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 165 transitions. Word has length 92 [2023-04-02 22:54:52,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 22:54:52,973 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 165 transitions. [2023-04-02 22:54:52,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 3 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2023-04-02 22:54:52,974 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 165 transitions. [2023-04-02 22:54:52,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-04-02 22:54:52,974 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 22:54:52,975 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 22:54:52,991 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 22:54:53,179 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 22:54:53,180 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 22:54:53,180 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 22:54:53,180 INFO L85 PathProgramCache]: Analyzing trace with hash 2063326179, now seen corresponding path program 2 times [2023-04-02 22:54:53,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 22:54:53,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224158356] [2023-04-02 22:54:53,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:54:53,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 22:54:53,187 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 22:54:53,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [353476158] [2023-04-02 22:54:53,187 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-04-02 22:54:53,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:54:53,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:54:53,188 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 22:54:53,193 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 22:54:53,239 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-04-02 22:54:53,239 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 22:54:53,239 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 7 conjunts are in the unsatisfiable core [2023-04-02 22:54:53,241 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 22:54:53,278 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 40 proven. 9 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2023-04-02 22:54:53,278 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 22:54:53,354 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 40 proven. 9 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2023-04-02 22:54:53,355 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 22:54:53,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224158356] [2023-04-02 22:54:53,355 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 22:54:53,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [353476158] [2023-04-02 22:54:53,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [353476158] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 22:54:53,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [965069671] [2023-04-02 22:54:53,356 INFO L159 IcfgInterpreter]: Started Sifa with 31 locations of interest [2023-04-02 22:54:53,357 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 22:54:53,357 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 22:54:53,357 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 22:54:53,357 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 22:54:53,367 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-02 22:54:57,378 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 9 for LOIs [2023-04-02 22:54:57,381 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 9 for LOIs [2023-04-02 22:54:57,381 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-02 22:54:57,383 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 22:54:58,527 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9078#(and (<= 1 |#StackHeapBarrier|) (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (= |#NULL.base| 0))' at error location [2023-04-02 22:54:58,527 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 22:54:58,527 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-02 22:54:58,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2023-04-02 22:54:58,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533620532] [2023-04-02 22:54:58,527 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-02 22:54:58,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 22:54:58,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 22:54:58,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 22:54:58,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=557, Unknown=0, NotChecked=0, Total=702 [2023-04-02 22:54:58,528 INFO L87 Difference]: Start difference. First operand 130 states and 165 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 4 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-04-02 22:54:58,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 22:54:58,754 INFO L93 Difference]: Finished difference Result 171 states and 230 transitions. [2023-04-02 22:54:58,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-02 22:54:58,754 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 4 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 103 [2023-04-02 22:54:58,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 22:54:58,755 INFO L225 Difference]: With dead ends: 171 [2023-04-02 22:54:58,755 INFO L226 Difference]: Without dead ends: 164 [2023-04-02 22:54:58,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 282 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=196, Invalid=994, Unknown=0, NotChecked=0, Total=1190 [2023-04-02 22:54:58,756 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 20 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 22:54:58,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 231 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 22:54:58,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2023-04-02 22:54:58,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 145. [2023-04-02 22:54:58,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 77 states have (on average 1.1168831168831168) internal successors, (86), 79 states have internal predecessors, (86), 53 states have call successors, (53), 15 states have call predecessors, (53), 14 states have return successors, (51), 50 states have call predecessors, (51), 51 states have call successors, (51) [2023-04-02 22:54:58,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 190 transitions. [2023-04-02 22:54:58,811 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 190 transitions. Word has length 103 [2023-04-02 22:54:58,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 22:54:58,811 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 190 transitions. [2023-04-02 22:54:58,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 4 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-04-02 22:54:58,811 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 190 transitions. [2023-04-02 22:54:58,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-04-02 22:54:58,812 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 22:54:58,812 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 14, 6, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 22:54:58,816 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 22:54:59,016 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 22:54:59,016 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 22:54:59,017 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 22:54:59,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1401725166, now seen corresponding path program 2 times [2023-04-02 22:54:59,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 22:54:59,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405171913] [2023-04-02 22:54:59,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:54:59,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 22:54:59,024 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 22:54:59,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [877022760] [2023-04-02 22:54:59,024 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-04-02 22:54:59,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:54:59,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:54:59,032 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 22:54:59,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-04-02 22:54:59,089 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-04-02 22:54:59,089 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 22:54:59,090 INFO L262 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 17 conjunts are in the unsatisfiable core [2023-04-02 22:54:59,092 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 22:54:59,144 INFO L134 CoverageAnalysis]: Checked inductivity of 459 backedges. 152 proven. 10 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2023-04-02 22:54:59,144 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 22:54:59,234 INFO L134 CoverageAnalysis]: Checked inductivity of 459 backedges. 46 proven. 24 refuted. 0 times theorem prover too weak. 389 trivial. 0 not checked. [2023-04-02 22:54:59,235 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 22:54:59,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405171913] [2023-04-02 22:54:59,235 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 22:54:59,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [877022760] [2023-04-02 22:54:59,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [877022760] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 22:54:59,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [309579363] [2023-04-02 22:54:59,236 INFO L159 IcfgInterpreter]: Started Sifa with 30 locations of interest [2023-04-02 22:54:59,236 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 22:54:59,236 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 22:54:59,236 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 22:54:59,236 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 22:54:59,252 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-02 22:55:03,194 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 9 for LOIs [2023-04-02 22:55:03,196 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 9 for LOIs [2023-04-02 22:55:03,197 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-02 22:55:03,199 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 22:55:04,320 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '10313#(and (<= 1 |#StackHeapBarrier|) (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (= |#NULL.base| 0))' at error location [2023-04-02 22:55:04,320 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 22:55:04,320 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-02 22:55:04,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2023-04-02 22:55:04,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522633206] [2023-04-02 22:55:04,321 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-02 22:55:04,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-02 22:55:04,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 22:55:04,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-02 22:55:04,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=874, Unknown=0, NotChecked=0, Total=1056 [2023-04-02 22:55:04,322 INFO L87 Difference]: Start difference. First operand 145 states and 190 transitions. Second operand has 14 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 9 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (34), 9 states have call predecessors, (34), 9 states have call successors, (34) [2023-04-02 22:55:04,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 22:55:04,665 INFO L93 Difference]: Finished difference Result 186 states and 242 transitions. [2023-04-02 22:55:04,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-02 22:55:04,666 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 9 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (34), 9 states have call predecessors, (34), 9 states have call successors, (34) Word has length 114 [2023-04-02 22:55:04,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 22:55:04,666 INFO L225 Difference]: With dead ends: 186 [2023-04-02 22:55:04,666 INFO L226 Difference]: Without dead ends: 143 [2023-04-02 22:55:04,668 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 309 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=299, Invalid=1507, Unknown=0, NotChecked=0, Total=1806 [2023-04-02 22:55:04,669 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 52 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 22:55:04,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 196 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 22:55:04,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2023-04-02 22:55:04,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 142. [2023-04-02 22:55:04,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 74 states have (on average 1.0945945945945945) internal successors, (81), 76 states have internal predecessors, (81), 53 states have call successors, (53), 15 states have call predecessors, (53), 14 states have return successors, (51), 50 states have call predecessors, (51), 51 states have call successors, (51) [2023-04-02 22:55:04,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 185 transitions. [2023-04-02 22:55:04,725 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 185 transitions. Word has length 114 [2023-04-02 22:55:04,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 22:55:04,725 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 185 transitions. [2023-04-02 22:55:04,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 9 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (34), 9 states have call predecessors, (34), 9 states have call successors, (34) [2023-04-02 22:55:04,725 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 185 transitions. [2023-04-02 22:55:04,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-04-02 22:55:04,727 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 22:55:04,727 INFO L195 NwaCegarLoop]: trace histogram [17, 16, 16, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 22:55:04,732 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-04-02 22:55:04,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-04-02 22:55:04,932 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 22:55:04,932 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 22:55:04,932 INFO L85 PathProgramCache]: Analyzing trace with hash 645807191, now seen corresponding path program 3 times [2023-04-02 22:55:04,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 22:55:04,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65329602] [2023-04-02 22:55:04,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:55:04,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 22:55:04,943 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 22:55:04,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1816395469] [2023-04-02 22:55:04,943 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-04-02 22:55:04,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:55:04,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:55:04,947 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 22:55:04,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-04-02 22:55:05,005 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-04-02 22:55:05,005 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 22:55:05,006 INFO L262 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 12 conjunts are in the unsatisfiable core [2023-04-02 22:55:05,008 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 22:55:05,086 INFO L134 CoverageAnalysis]: Checked inductivity of 580 backedges. 34 proven. 41 refuted. 0 times theorem prover too weak. 505 trivial. 0 not checked. [2023-04-02 22:55:05,086 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 22:55:05,234 INFO L134 CoverageAnalysis]: Checked inductivity of 580 backedges. 34 proven. 41 refuted. 0 times theorem prover too weak. 505 trivial. 0 not checked. [2023-04-02 22:55:05,234 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 22:55:05,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65329602] [2023-04-02 22:55:05,234 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 22:55:05,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1816395469] [2023-04-02 22:55:05,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1816395469] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 22:55:05,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [596707237] [2023-04-02 22:55:05,235 INFO L159 IcfgInterpreter]: Started Sifa with 31 locations of interest [2023-04-02 22:55:05,235 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 22:55:05,236 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 22:55:05,236 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 22:55:05,236 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 22:55:05,244 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-02 22:55:09,429 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 9 for LOIs [2023-04-02 22:55:09,431 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 9 for LOIs [2023-04-02 22:55:09,432 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-02 22:55:09,433 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 22:55:10,630 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '11611#(and (<= 1 |#StackHeapBarrier|) (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (= |#NULL.base| 0))' at error location [2023-04-02 22:55:10,631 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 22:55:10,631 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-02 22:55:10,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2023-04-02 22:55:10,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040494916] [2023-04-02 22:55:10,631 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-02 22:55:10,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-02 22:55:10,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 22:55:10,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-02 22:55:10,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=845, Unknown=0, NotChecked=0, Total=1056 [2023-04-02 22:55:10,632 INFO L87 Difference]: Start difference. First operand 142 states and 185 transitions. Second operand has 13 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 13 states have internal predecessors, (34), 12 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (39), 11 states have call predecessors, (39), 11 states have call successors, (39) [2023-04-02 22:55:11,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 22:55:11,004 INFO L93 Difference]: Finished difference Result 182 states and 235 transitions. [2023-04-02 22:55:11,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-02 22:55:11,004 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 13 states have internal predecessors, (34), 12 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (39), 11 states have call predecessors, (39), 11 states have call successors, (39) Word has length 122 [2023-04-02 22:55:11,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 22:55:11,005 INFO L225 Difference]: With dead ends: 182 [2023-04-02 22:55:11,005 INFO L226 Difference]: Without dead ends: 108 [2023-04-02 22:55:11,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 332 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=307, Invalid=1415, Unknown=0, NotChecked=0, Total=1722 [2023-04-02 22:55:11,005 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 37 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 22:55:11,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 210 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 22:55:11,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2023-04-02 22:55:11,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2023-04-02 22:55:11,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 58 states have (on average 1.0689655172413792) internal successors, (62), 59 states have internal predecessors, (62), 37 states have call successors, (37), 13 states have call predecessors, (37), 12 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2023-04-02 22:55:11,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 134 transitions. [2023-04-02 22:55:11,042 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 134 transitions. Word has length 122 [2023-04-02 22:55:11,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 22:55:11,042 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 134 transitions. [2023-04-02 22:55:11,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 13 states have internal predecessors, (34), 12 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (39), 11 states have call predecessors, (39), 11 states have call successors, (39) [2023-04-02 22:55:11,042 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 134 transitions. [2023-04-02 22:55:11,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-04-02 22:55:11,042 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 22:55:11,043 INFO L195 NwaCegarLoop]: trace histogram [17, 16, 16, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 22:55:11,061 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-04-02 22:55:11,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-04-02 22:55:11,247 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 22:55:11,247 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 22:55:11,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1869127778, now seen corresponding path program 4 times [2023-04-02 22:55:11,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 22:55:11,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203612567] [2023-04-02 22:55:11,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:55:11,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 22:55:11,255 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 22:55:11,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1481946767] [2023-04-02 22:55:11,255 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-04-02 22:55:11,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:55:11,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:55:11,256 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 22:55:11,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-04-02 22:55:11,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 22:55:11,332 INFO L262 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 79 conjunts are in the unsatisfiable core [2023-04-02 22:55:11,343 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 22:55:12,020 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 75 proven. 53 refuted. 0 times theorem prover too weak. 457 trivial. 0 not checked. [2023-04-02 22:55:12,020 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 22:55:13,244 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 73 proven. 47 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2023-04-02 22:55:13,245 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 22:55:13,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203612567] [2023-04-02 22:55:13,245 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 22:55:13,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1481946767] [2023-04-02 22:55:13,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1481946767] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 22:55:13,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1425962697] [2023-04-02 22:55:13,246 INFO L159 IcfgInterpreter]: Started Sifa with 31 locations of interest [2023-04-02 22:55:13,246 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 22:55:13,246 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 22:55:13,246 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 22:55:13,246 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 22:55:13,256 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-02 22:55:17,486 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 9 for LOIs [2023-04-02 22:55:17,488 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 9 for LOIs [2023-04-02 22:55:17,489 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-02 22:55:17,491 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 22:55:19,887 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '12881#(and (<= 1 |#StackHeapBarrier|) (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (= |#NULL.base| 0))' at error location [2023-04-02 22:55:19,887 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 22:55:19,887 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-02 22:55:19,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 15] total 31 [2023-04-02 22:55:19,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422098208] [2023-04-02 22:55:19,887 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-02 22:55:19,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-04-02 22:55:19,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 22:55:19,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-04-02 22:55:19,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=2199, Unknown=0, NotChecked=0, Total=2550 [2023-04-02 22:55:19,889 INFO L87 Difference]: Start difference. First operand 108 states and 134 transitions. Second operand has 31 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 16 states have call successors, (46), 3 states have call predecessors, (46), 3 states have return successors, (44), 14 states have call predecessors, (44), 14 states have call successors, (44) [2023-04-02 22:55:21,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 22:55:21,387 INFO L93 Difference]: Finished difference Result 138 states and 166 transitions. [2023-04-02 22:55:21,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-02 22:55:21,387 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 16 states have call successors, (46), 3 states have call predecessors, (46), 3 states have return successors, (44), 14 states have call predecessors, (44), 14 states have call successors, (44) Word has length 125 [2023-04-02 22:55:21,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 22:55:21,388 INFO L225 Difference]: With dead ends: 138 [2023-04-02 22:55:21,388 INFO L226 Difference]: Without dead ends: 0 [2023-04-02 22:55:21,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 325 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1021 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=476, Invalid=3064, Unknown=0, NotChecked=0, Total=3540 [2023-04-02 22:55:21,389 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 33 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 772 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-02 22:55:21,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 224 Invalid, 815 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 772 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-02 22:55:21,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-04-02 22:55:21,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-04-02 22:55:21,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-04-02 22:55:21,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-04-02 22:55:21,390 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 125 [2023-04-02 22:55:21,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 22:55:21,390 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-04-02 22:55:21,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 16 states have call successors, (46), 3 states have call predecessors, (46), 3 states have return successors, (44), 14 states have call predecessors, (44), 14 states have call successors, (44) [2023-04-02 22:55:21,390 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-04-02 22:55:21,390 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-04-02 22:55:21,392 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-02 22:55:21,397 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-04-02 22:55:21,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-04-02 22:55:21,594 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-04-02 22:55:30,972 INFO L899 garLoopResultBuilder]: For program point reach_errorEXIT(line 4) no Hoare annotation was computed. [2023-04-02 22:55:30,972 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line 4) no Hoare annotation was computed. [2023-04-02 22:55:30,972 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 7 9) the Hoare annotation is: true [2023-04-02 22:55:30,972 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 7 9) no Hoare annotation was computed. [2023-04-02 22:55:30,973 INFO L895 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (or (not (= (select .cse0 0) 48)) (not (= |#NULL.offset| 0)) (not (= 2 (select |#length| 1))) (not (= (select |#valid| 3) 1)) (not (= (select |#length| 3) 12)) (not (= (select |#valid| 0) 0)) (not (= (select .cse0 1) 0)) (not (= (select |#valid| 1) 1)) (and (<= 0 main_~y~0) (<= 1 main_~x~0) (<= main_~y~0 2) (<= main_~x~0 2)) (not (= |#NULL.base| 0)) (not (= (select |#valid| 2) 1)) (<= |#StackHeapBarrier| 0) (not (= 11 (select |#length| 2))))) [2023-04-02 22:55:30,973 INFO L899 garLoopResultBuilder]: For program point mainEXIT(lines 18 74) no Hoare annotation was computed. [2023-04-02 22:55:30,973 INFO L895 garLoopResultBuilder]: At program point L50(line 50) the Hoare annotation is: (let ((.cse27 (+ main_~b~0 1)) (.cse28 (* main_~y~0 main_~y~0))) (let ((.cse13 (select |#memory_int| 1)) (.cse0 (= main_~r~0 0)) (.cse1 (= main_~s~0 1)) (.cse15 (<= 1 main_~a~0)) (.cse3 (<= 0 main_~c~0)) (.cse4 (= main_~b~0 main_~y~0)) (.cse6 (= main_~yy~0 .cse28)) (.cse23 (+ main_~c~0 (* main_~b~0 2))) (.cse7 (= main_~q~0 0)) (.cse8 (<= 1 main_~y~0)) (.cse10 (= main_~a~0 main_~x~0)) (.cse11 (<= main_~x~0 2)) (.cse12 (= main_~p~0 1)) (.cse14 (= main_~k~0 0)) (.cse24 (<= main_~a~0 2)) (.cse16 (= main_~s~0 0)) (.cse17 (<= .cse28 main_~yy~0)) (.cse18 (<= .cse27 main_~a~0)) (.cse19 (= main_~p~0 0)) (.cse20 (= main_~r~0 1)) (.cse21 (= main_~a~0 main_~y~0)) (.cse22 (= main_~b~0 main_~x~0)) (.cse5 (= main_~k~0 1)) (.cse25 (<= 1 main_~b~0)) (.cse26 (= main_~q~0 1)) (.cse9 (= main_~xy~0 (* main_~y~0 main_~x~0))) (.cse2 (+ main_~c~0 main_~b~0))) (or (and .cse0 .cse1 (= main_~a~0 .cse2) .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12) (not (= (select .cse13 0) 48)) (not (= |#NULL.offset| 0)) (and .cse0 (<= main_~y~0 2) .cse14 .cse1 .cse15 .cse4 .cse6 .cse7 .cse8 .cse9 .cse10 (= main_~c~0 main_~x~0) .cse11 .cse12) (and .cse16 .cse17 .cse18 .cse19 .cse20 .cse21 .cse22 (= .cse23 main_~a~0) (= main_~k~0 2) .cse24 .cse25 .cse26 .cse9) (not (= 2 (select |#length| 1))) (not (= (select |#valid| 3) 1)) (not (= (select |#length| 3) 12)) (not (= (select |#valid| 0) 0)) (not (= (select .cse13 1) 0)) (not (= (select |#valid| 1) 1)) (and .cse0 (= main_~a~0 (+ main_~c~0 (* main_~b~0 main_~k~0))) .cse1 .cse15 .cse3 .cse4 .cse6 (<= .cse23 2) .cse7 .cse8 .cse9 .cse10 .cse11 .cse12) (not (= |#NULL.base| 0)) (not (= (select |#valid| 2) 1)) (and .cse16 .cse17 .cse19 .cse14 (= main_~c~0 main_~y~0) .cse20 .cse21 .cse22 (<= .cse27 main_~c~0) .cse24 .cse25 .cse26 .cse9) (<= |#StackHeapBarrier| 0) (and .cse16 .cse17 .cse18 .cse19 .cse20 .cse21 .cse22 .cse5 (<= .cse2 2) .cse25 .cse26 .cse9 (= main_~y~0 .cse2)) (not (= 11 (select |#length| 2)))))) [2023-04-02 22:55:30,973 INFO L895 garLoopResultBuilder]: At program point L48(line 48) the Hoare annotation is: (let ((.cse27 (+ main_~b~0 1)) (.cse28 (* main_~y~0 main_~y~0))) (let ((.cse13 (select |#memory_int| 1)) (.cse0 (= main_~r~0 0)) (.cse1 (= main_~s~0 1)) (.cse15 (<= 1 main_~a~0)) (.cse3 (<= 0 main_~c~0)) (.cse4 (= main_~b~0 main_~y~0)) (.cse6 (= main_~yy~0 .cse28)) (.cse23 (+ main_~c~0 (* main_~b~0 2))) (.cse7 (= main_~q~0 0)) (.cse8 (<= 1 main_~y~0)) (.cse10 (= main_~a~0 main_~x~0)) (.cse11 (<= main_~x~0 2)) (.cse12 (= main_~p~0 1)) (.cse14 (= main_~k~0 0)) (.cse24 (<= main_~a~0 2)) (.cse16 (= main_~s~0 0)) (.cse17 (<= .cse28 main_~yy~0)) (.cse18 (<= .cse27 main_~a~0)) (.cse19 (= main_~p~0 0)) (.cse20 (= main_~r~0 1)) (.cse21 (= main_~a~0 main_~y~0)) (.cse22 (= main_~b~0 main_~x~0)) (.cse5 (= main_~k~0 1)) (.cse25 (<= 1 main_~b~0)) (.cse26 (= main_~q~0 1)) (.cse9 (= main_~xy~0 (* main_~y~0 main_~x~0))) (.cse2 (+ main_~c~0 main_~b~0))) (or (and .cse0 .cse1 (= main_~a~0 .cse2) .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12) (not (= (select .cse13 0) 48)) (not (= |#NULL.offset| 0)) (and .cse0 (<= main_~y~0 2) .cse14 .cse1 .cse15 .cse4 .cse6 .cse7 .cse8 .cse9 .cse10 (= main_~c~0 main_~x~0) .cse11 .cse12) (and .cse16 .cse17 .cse18 .cse19 .cse20 .cse21 .cse22 (= .cse23 main_~a~0) (= main_~k~0 2) .cse24 .cse25 .cse26 .cse9) (not (= 2 (select |#length| 1))) (not (= (select |#valid| 3) 1)) (not (= (select |#length| 3) 12)) (not (= (select |#valid| 0) 0)) (not (= (select .cse13 1) 0)) (not (= (select |#valid| 1) 1)) (and .cse0 (= main_~a~0 (+ main_~c~0 (* main_~b~0 main_~k~0))) .cse1 .cse15 .cse3 .cse4 .cse6 (<= .cse23 2) .cse7 .cse8 .cse9 .cse10 .cse11 .cse12) (not (= |#NULL.base| 0)) (not (= (select |#valid| 2) 1)) (and .cse16 .cse17 .cse19 .cse14 (= main_~c~0 main_~y~0) .cse20 .cse21 .cse22 (<= .cse27 main_~c~0) .cse24 .cse25 .cse26 .cse9) (<= |#StackHeapBarrier| 0) (and .cse16 .cse17 .cse18 .cse19 .cse20 .cse21 .cse22 .cse5 (<= .cse2 2) .cse25 .cse26 .cse9 (= main_~y~0 .cse2)) (not (= 11 (select |#length| 2)))))) [2023-04-02 22:55:30,973 INFO L895 garLoopResultBuilder]: At program point L48-1(line 48) the Hoare annotation is: (let ((.cse27 (+ main_~b~0 1)) (.cse28 (* main_~y~0 main_~y~0))) (let ((.cse13 (select |#memory_int| 1)) (.cse0 (= main_~r~0 0)) (.cse1 (= main_~s~0 1)) (.cse15 (<= 1 main_~a~0)) (.cse3 (<= 0 main_~c~0)) (.cse4 (= main_~b~0 main_~y~0)) (.cse6 (= main_~yy~0 .cse28)) (.cse23 (+ main_~c~0 (* main_~b~0 2))) (.cse7 (= main_~q~0 0)) (.cse8 (<= 1 main_~y~0)) (.cse10 (= main_~a~0 main_~x~0)) (.cse11 (<= main_~x~0 2)) (.cse12 (= main_~p~0 1)) (.cse14 (= main_~k~0 0)) (.cse24 (<= main_~a~0 2)) (.cse16 (= main_~s~0 0)) (.cse17 (<= .cse28 main_~yy~0)) (.cse18 (<= .cse27 main_~a~0)) (.cse19 (= main_~p~0 0)) (.cse20 (= main_~r~0 1)) (.cse21 (= main_~a~0 main_~y~0)) (.cse22 (= main_~b~0 main_~x~0)) (.cse5 (= main_~k~0 1)) (.cse25 (<= 1 main_~b~0)) (.cse26 (= main_~q~0 1)) (.cse9 (= main_~xy~0 (* main_~y~0 main_~x~0))) (.cse2 (+ main_~c~0 main_~b~0))) (or (and .cse0 .cse1 (= main_~a~0 .cse2) .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12) (not (= (select .cse13 0) 48)) (not (= |#NULL.offset| 0)) (and .cse0 (<= main_~y~0 2) .cse14 .cse1 .cse15 .cse4 .cse6 .cse7 .cse8 .cse9 .cse10 (= main_~c~0 main_~x~0) .cse11 .cse12) (and .cse16 .cse17 .cse18 .cse19 .cse20 .cse21 .cse22 (= .cse23 main_~a~0) (= main_~k~0 2) .cse24 .cse25 .cse26 .cse9) (not (= 2 (select |#length| 1))) (not (= (select |#valid| 3) 1)) (not (= (select |#length| 3) 12)) (not (= (select |#valid| 0) 0)) (not (= (select .cse13 1) 0)) (not (= (select |#valid| 1) 1)) (and .cse0 (= main_~a~0 (+ main_~c~0 (* main_~b~0 main_~k~0))) .cse1 .cse15 .cse3 .cse4 .cse6 (<= .cse23 2) .cse7 .cse8 .cse9 .cse10 .cse11 .cse12) (not (= |#NULL.base| 0)) (not (= (select |#valid| 2) 1)) (and .cse16 .cse17 .cse19 .cse14 (= main_~c~0 main_~y~0) .cse20 .cse21 .cse22 (<= .cse27 main_~c~0) .cse24 .cse25 .cse26 .cse9) (<= |#StackHeapBarrier| 0) (and .cse16 .cse17 .cse18 .cse19 .cse20 .cse21 .cse22 .cse5 (<= .cse2 2) .cse25 .cse26 .cse9 (= main_~y~0 .cse2)) (not (= 11 (select |#length| 2)))))) [2023-04-02 22:55:30,973 INFO L899 garLoopResultBuilder]: For program point L42(lines 42 43) no Hoare annotation was computed. [2023-04-02 22:55:30,973 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 18 74) the Hoare annotation is: true [2023-04-02 22:55:30,973 INFO L895 garLoopResultBuilder]: At program point L71(line 71) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (or (not (= (select .cse0 0) 48)) (not (= |#NULL.offset| 0)) (not (= 2 (select |#length| 1))) (not (= (select |#valid| 3) 1)) (not (= (select |#length| 3) 12)) (and (<= 1 main_~x~0) (<= main_~y~0 2) (= main_~a~0 (+ (* main_~y~0 main_~r~0) (* main_~p~0 main_~x~0))) (<= 1 main_~y~0) (<= main_~x~0 2)) (not (= (select |#valid| 0) 0)) (not (= (select .cse0 1) 0)) (not (= (select |#valid| 1) 1)) (not (= |#NULL.base| 0)) (not (= (select |#valid| 2) 1)) (<= |#StackHeapBarrier| 0) (not (= 11 (select |#length| 2))))) [2023-04-02 22:55:30,974 INFO L895 garLoopResultBuilder]: At program point L38(line 38) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (or (not (= (select .cse0 0) 48)) (not (= |#NULL.offset| 0)) (not (= 2 (select |#length| 1))) (not (= (select |#valid| 3) 1)) (not (= (select |#length| 3) 12)) (not (= (select |#valid| 0) 0)) (not (= (select .cse0 1) 0)) (not (= (select |#valid| 1) 1)) (not (= |#NULL.base| 0)) (and (= main_~r~0 0) (<= main_~y~0 2) (= main_~k~0 0) (= main_~s~0 1) (<= 1 main_~a~0) (= main_~b~0 main_~y~0) (= main_~yy~0 (* main_~y~0 main_~y~0)) (= main_~q~0 0) (= main_~c~0 0) (<= 1 main_~y~0) (= main_~xy~0 (* main_~y~0 main_~x~0)) (= main_~a~0 main_~x~0) (<= main_~x~0 2) (= main_~p~0 1)) (not (= (select |#valid| 2) 1)) (<= |#StackHeapBarrier| 0) (not (= 11 (select |#length| 2))))) [2023-04-02 22:55:30,974 INFO L895 garLoopResultBuilder]: At program point L38-1(line 38) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (or (not (= (select .cse0 0) 48)) (not (= |#NULL.offset| 0)) (not (= 2 (select |#length| 1))) (not (= (select |#valid| 3) 1)) (not (= (select |#length| 3) 12)) (not (= (select |#valid| 0) 0)) (not (= (select .cse0 1) 0)) (not (= (select |#valid| 1) 1)) (not (= |#NULL.base| 0)) (and (= main_~r~0 0) (<= main_~y~0 2) (= main_~k~0 0) (= main_~s~0 1) (<= 1 main_~a~0) (= main_~b~0 main_~y~0) (= main_~yy~0 (* main_~y~0 main_~y~0)) (= main_~q~0 0) (= main_~c~0 0) (<= 1 main_~y~0) (= main_~xy~0 (* main_~y~0 main_~x~0)) (= main_~a~0 main_~x~0) (<= main_~x~0 2) (= main_~p~0 1)) (not (= (select |#valid| 2) 1)) (<= |#StackHeapBarrier| 0) (not (= 11 (select |#length| 2))))) [2023-04-02 22:55:30,974 INFO L899 garLoopResultBuilder]: For program point L26(line 26) no Hoare annotation was computed. [2023-04-02 22:55:30,974 INFO L895 garLoopResultBuilder]: At program point L24(line 24) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (or (not (= (select .cse0 0) 48)) (not (= |#NULL.offset| 0)) (not (= 2 (select |#length| 1))) (not (= (select |#valid| 3) 1)) (not (= (select |#length| 3) 12)) (not (= (select |#valid| 0) 0)) (not (= (select .cse0 1) 0)) (not (= (select |#valid| 1) 1)) (not (= |#NULL.base| 0)) (not (= (select |#valid| 2) 1)) (<= |#StackHeapBarrier| 0) (and (<= main_~y~0 2147483647) (<= 0 main_~x~0) (<= 0 (+ main_~y~0 2147483648)) (<= main_~x~0 2)) (not (= 11 (select |#length| 2))))) [2023-04-02 22:55:30,974 INFO L895 garLoopResultBuilder]: At program point L24-1(line 24) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (or (not (= (select .cse0 0) 48)) (and (<= 0 main_~y~0) (<= main_~y~0 2) (<= 0 main_~x~0) (<= main_~x~0 2)) (not (= |#NULL.offset| 0)) (not (= 2 (select |#length| 1))) (not (= (select |#valid| 3) 1)) (not (= (select |#length| 3) 12)) (not (= (select |#valid| 0) 0)) (not (= (select .cse0 1) 0)) (not (= (select |#valid| 1) 1)) (not (= |#NULL.base| 0)) (not (= (select |#valid| 2) 1)) (<= |#StackHeapBarrier| 0) (not (= 11 (select |#length| 2))))) [2023-04-02 22:55:30,974 INFO L895 garLoopResultBuilder]: At program point L22(line 22) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (or (not (= (select .cse0 0) 48)) (not (= |#NULL.offset| 0)) (not (= 2 (select |#length| 1))) (and (<= main_~x~0 2147483647) (<= 0 (+ main_~x~0 2147483648))) (not (= (select |#valid| 3) 1)) (not (= (select |#length| 3) 12)) (not (= (select |#valid| 0) 0)) (not (= (select .cse0 1) 0)) (not (= (select |#valid| 1) 1)) (not (= |#NULL.base| 0)) (not (= (select |#valid| 2) 1)) (<= |#StackHeapBarrier| 0) (not (= 11 (select |#length| 2))))) [2023-04-02 22:55:30,974 INFO L899 garLoopResultBuilder]: For program point L22-1(line 22) no Hoare annotation was computed. [2023-04-02 22:55:30,974 INFO L899 garLoopResultBuilder]: For program point L51(lines 47 56) no Hoare annotation was computed. [2023-04-02 22:55:30,974 INFO L895 garLoopResultBuilder]: At program point L49(line 49) the Hoare annotation is: (let ((.cse27 (+ main_~b~0 1)) (.cse28 (* main_~y~0 main_~y~0))) (let ((.cse13 (select |#memory_int| 1)) (.cse0 (= main_~r~0 0)) (.cse1 (= main_~s~0 1)) (.cse15 (<= 1 main_~a~0)) (.cse3 (<= 0 main_~c~0)) (.cse4 (= main_~b~0 main_~y~0)) (.cse6 (= main_~yy~0 .cse28)) (.cse23 (+ main_~c~0 (* main_~b~0 2))) (.cse7 (= main_~q~0 0)) (.cse8 (<= 1 main_~y~0)) (.cse10 (= main_~a~0 main_~x~0)) (.cse11 (<= main_~x~0 2)) (.cse12 (= main_~p~0 1)) (.cse14 (= main_~k~0 0)) (.cse24 (<= main_~a~0 2)) (.cse16 (= main_~s~0 0)) (.cse17 (<= .cse28 main_~yy~0)) (.cse18 (<= .cse27 main_~a~0)) (.cse19 (= main_~p~0 0)) (.cse20 (= main_~r~0 1)) (.cse21 (= main_~a~0 main_~y~0)) (.cse22 (= main_~b~0 main_~x~0)) (.cse5 (= main_~k~0 1)) (.cse25 (<= 1 main_~b~0)) (.cse26 (= main_~q~0 1)) (.cse9 (= main_~xy~0 (* main_~y~0 main_~x~0))) (.cse2 (+ main_~c~0 main_~b~0))) (or (and .cse0 .cse1 (= main_~a~0 .cse2) .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12) (not (= (select .cse13 0) 48)) (not (= |#NULL.offset| 0)) (and .cse0 (<= main_~y~0 2) .cse14 .cse1 .cse15 .cse4 .cse6 .cse7 .cse8 .cse9 .cse10 (= main_~c~0 main_~x~0) .cse11 .cse12) (and .cse16 .cse17 .cse18 .cse19 .cse20 .cse21 .cse22 (= .cse23 main_~a~0) (= main_~k~0 2) .cse24 .cse25 .cse26 .cse9) (not (= 2 (select |#length| 1))) (not (= (select |#valid| 3) 1)) (not (= (select |#length| 3) 12)) (not (= (select |#valid| 0) 0)) (not (= (select .cse13 1) 0)) (not (= (select |#valid| 1) 1)) (and .cse0 (= main_~a~0 (+ main_~c~0 (* main_~b~0 main_~k~0))) .cse1 .cse15 .cse3 .cse4 .cse6 (<= .cse23 2) .cse7 .cse8 .cse9 .cse10 .cse11 .cse12) (not (= |#NULL.base| 0)) (not (= (select |#valid| 2) 1)) (and .cse16 .cse17 .cse19 .cse14 (= main_~c~0 main_~y~0) .cse20 .cse21 .cse22 (<= .cse27 main_~c~0) .cse24 .cse25 .cse26 .cse9) (<= |#StackHeapBarrier| 0) (and .cse16 .cse17 .cse18 .cse19 .cse20 .cse21 .cse22 .cse5 (<= .cse2 2) .cse25 .cse26 .cse9 (= main_~y~0 .cse2)) (not (= 11 (select |#length| 2)))))) [2023-04-02 22:55:30,974 INFO L895 garLoopResultBuilder]: At program point L47-2(lines 47 56) the Hoare annotation is: (let ((.cse27 (+ main_~b~0 1)) (.cse28 (* main_~y~0 main_~y~0))) (let ((.cse13 (select |#memory_int| 1)) (.cse0 (= main_~r~0 0)) (.cse1 (= main_~s~0 1)) (.cse15 (<= 1 main_~a~0)) (.cse3 (<= 0 main_~c~0)) (.cse4 (= main_~b~0 main_~y~0)) (.cse6 (= main_~yy~0 .cse28)) (.cse23 (+ main_~c~0 (* main_~b~0 2))) (.cse7 (= main_~q~0 0)) (.cse8 (<= 1 main_~y~0)) (.cse10 (= main_~a~0 main_~x~0)) (.cse11 (<= main_~x~0 2)) (.cse12 (= main_~p~0 1)) (.cse14 (= main_~k~0 0)) (.cse24 (<= main_~a~0 2)) (.cse16 (= main_~s~0 0)) (.cse17 (<= .cse28 main_~yy~0)) (.cse18 (<= .cse27 main_~a~0)) (.cse19 (= main_~p~0 0)) (.cse20 (= main_~r~0 1)) (.cse21 (= main_~a~0 main_~y~0)) (.cse22 (= main_~b~0 main_~x~0)) (.cse5 (= main_~k~0 1)) (.cse25 (<= 1 main_~b~0)) (.cse26 (= main_~q~0 1)) (.cse9 (= main_~xy~0 (* main_~y~0 main_~x~0))) (.cse2 (+ main_~c~0 main_~b~0))) (or (and .cse0 .cse1 (= main_~a~0 .cse2) .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12) (not (= (select .cse13 0) 48)) (not (= |#NULL.offset| 0)) (and .cse0 (<= main_~y~0 2) .cse14 .cse1 .cse15 .cse4 .cse6 .cse7 .cse8 .cse9 .cse10 (= main_~c~0 main_~x~0) .cse11 .cse12) (and .cse16 .cse17 .cse18 .cse19 .cse20 .cse21 .cse22 (= .cse23 main_~a~0) (= main_~k~0 2) .cse24 .cse25 .cse26 .cse9) (not (= 2 (select |#length| 1))) (not (= (select |#valid| 3) 1)) (not (= (select |#length| 3) 12)) (not (= (select |#valid| 0) 0)) (not (= (select .cse13 1) 0)) (not (= (select |#valid| 1) 1)) (and .cse0 (= main_~a~0 (+ main_~c~0 (* main_~b~0 main_~k~0))) .cse1 .cse15 .cse3 .cse4 .cse6 (<= .cse23 2) .cse7 .cse8 .cse9 .cse10 .cse11 .cse12) (not (= |#NULL.base| 0)) (not (= (select |#valid| 2) 1)) (and .cse16 .cse17 .cse19 .cse14 (= main_~c~0 main_~y~0) .cse20 .cse21 .cse22 (<= .cse27 main_~c~0) .cse24 .cse25 .cse26 .cse9) (<= |#StackHeapBarrier| 0) (and .cse16 .cse17 .cse18 .cse19 .cse20 .cse21 .cse22 .cse5 (<= .cse2 2) .cse25 .cse26 .cse9 (= main_~y~0 .cse2)) (not (= 11 (select |#length| 2)))))) [2023-04-02 22:55:30,974 INFO L899 garLoopResultBuilder]: For program point L47-3(lines 47 56) no Hoare annotation was computed. [2023-04-02 22:55:30,975 INFO L895 garLoopResultBuilder]: At program point L41-1(lines 41 68) the Hoare annotation is: (let ((.cse5 (select |#memory_int| 1)) (.cse0 (<= main_~y~0 2)) (.cse6 (* main_~y~0 main_~y~0)) (.cse3 (<= 1 main_~y~0)) (.cse7 (= main_~xy~0 (* main_~y~0 main_~x~0))) (.cse4 (<= main_~x~0 2))) (or (let ((.cse1 (* main_~y~0 main_~r~0)) (.cse2 (* main_~p~0 main_~x~0))) (and (<= 1 main_~x~0) .cse0 (= main_~a~0 (+ .cse1 .cse2)) (or (= (+ .cse1 (* main_~a~0 main_~y~0) .cse2) (+ main_~a~0 (* main_~p~0 main_~xy~0) (* main_~r~0 main_~yy~0))) (<= main_~b~0 main_~a~0)) (<= 0 main_~c~0) (<= main_~b~0 0) (<= main_~c~0 0) (<= 0 main_~b~0) .cse3 (= (+ (* main_~q~0 main_~x~0) (* main_~y~0 main_~s~0)) 0) .cse4)) (not (= (select .cse5 0) 48)) (not (= |#NULL.offset| 0)) (not (= 2 (select |#length| 1))) (and (= main_~s~0 0) (<= .cse6 main_~yy~0) (<= (+ main_~b~0 1) main_~a~0) (= main_~p~0 0) (= main_~r~0 1) (= main_~a~0 main_~y~0) (< main_~c~0 (* main_~b~0 2)) (= main_~b~0 main_~x~0) (<= main_~b~0 main_~c~0) (<= main_~a~0 2) (= main_~q~0 1) .cse7 (let ((.cse8 (* main_~k~0 main_~x~0))) (or (= (+ main_~y~0 (* main_~k~0 main_~xy~0) (* main_~c~0 main_~y~0)) (+ main_~c~0 main_~yy~0 .cse8)) (not (= (+ main_~c~0 .cse8) main_~y~0))))) (not (= (select |#valid| 3) 1)) (not (= (select |#length| 3) 12)) (not (= (select |#valid| 0) 0)) (not (= (select .cse5 1) 0)) (not (= (select |#valid| 1) 1)) (not (= |#NULL.base| 0)) (and (= main_~r~0 0) .cse0 (= main_~k~0 0) (= main_~s~0 1) (<= 1 main_~a~0) (= main_~b~0 main_~y~0) (= main_~yy~0 .cse6) (= main_~q~0 0) (= main_~c~0 0) .cse3 .cse7 (= main_~a~0 main_~x~0) .cse4 (= main_~p~0 1)) (not (= (select |#valid| 2) 1)) (<= |#StackHeapBarrier| 0) (not (= 11 (select |#length| 2))))) [2023-04-02 22:55:30,975 INFO L899 garLoopResultBuilder]: For program point L72(line 72) no Hoare annotation was computed. [2023-04-02 22:55:30,975 INFO L895 garLoopResultBuilder]: At program point L41-2(lines 41 68) the Hoare annotation is: (let ((.cse7 (* main_~y~0 main_~r~0)) (.cse8 (* main_~p~0 main_~x~0))) (let ((.cse18 (select |#memory_int| 1)) (.cse17 (+ .cse7 .cse8))) (let ((.cse0 (= (select |#length| 3) 12)) (.cse1 (<= 1 main_~x~0)) (.cse3 (<= main_~y~0 2)) (.cse4 (= 2 (select |#length| 1))) (.cse5 (= (select |#valid| 3) 1)) (.cse6 (= main_~a~0 .cse17)) (.cse9 (= (select |#valid| 1) 1)) (.cse10 (= (select |#valid| 0) 0)) (.cse11 (= |#NULL.offset| 0)) (.cse12 (= (select .cse18 0) 48)) (.cse13 (<= 1 main_~y~0)) (.cse14 (= (select .cse18 1) 0)) (.cse15 (= (+ (* main_~q~0 main_~x~0) (* main_~y~0 main_~s~0)) 0)) (.cse16 (<= main_~x~0 2))) (or (let ((.cse2 (* main_~b~0 2))) (and .cse0 .cse1 (< .cse2 (+ main_~c~0 1)) .cse3 .cse4 .cse5 .cse6 (or (< main_~a~0 main_~b~0) (< .cse2 (+ main_~a~0 1))) (or (= (+ .cse7 (* main_~a~0 main_~y~0) .cse8) (+ main_~a~0 (* main_~p~0 main_~xy~0) (* main_~r~0 main_~yy~0))) (<= main_~b~0 main_~a~0)) (<= main_~b~0 main_~c~0) .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15 .cse16)) (not .cse12) (not .cse11) (not .cse4) (not .cse5) (not .cse0) (not .cse10) (not .cse14) (not .cse9) (not (= |#NULL.base| 0)) (not (= (select |#valid| 2) 1)) (and .cse0 (= (+ (* main_~k~0 main_~y~0 main_~s~0) (* main_~q~0 main_~k~0 main_~x~0)) .cse17) .cse1 .cse3 .cse4 .cse5 .cse6 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15 .cse16) (<= |#StackHeapBarrier| 0) (not (= 11 (select |#length| 2))))))) [2023-04-02 22:55:30,975 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: (and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2023-04-02 22:55:30,975 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2023-04-02 22:55:30,975 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-04-02 22:55:30,975 INFO L895 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (= 11 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse0 0) 48) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2023-04-02 22:55:30,975 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-04-02 22:55:30,975 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-04-02 22:55:30,975 INFO L899 garLoopResultBuilder]: For program point L12(lines 12 13) no Hoare annotation was computed. [2023-04-02 22:55:30,975 INFO L899 garLoopResultBuilder]: For program point L11(lines 11 14) no Hoare annotation was computed. [2023-04-02 22:55:30,975 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 10 16) no Hoare annotation was computed. [2023-04-02 22:55:30,975 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 10 16) the Hoare annotation is: true [2023-04-02 22:55:30,975 INFO L899 garLoopResultBuilder]: For program point L11-2(lines 10 16) no Hoare annotation was computed. [2023-04-02 22:55:30,975 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2023-04-02 22:55:30,977 INFO L445 BasicCegarLoop]: Path program histogram: [4, 4, 2, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 22:55:30,978 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-04-02 22:55:30,992 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.04 10:55:30 BoogieIcfgContainer [2023-04-02 22:55:30,992 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-04-02 22:55:30,993 INFO L158 Benchmark]: Toolchain (without parser) took 119670.80ms. Allocated memory was 201.3MB in the beginning and 1.0GB in the end (delta: 814.7MB). Free memory was 156.2MB in the beginning and 687.7MB in the end (delta: -531.5MB). Peak memory consumption was 602.1MB. Max. memory is 8.0GB. [2023-04-02 22:55:30,993 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 201.3MB. Free memory is still 157.5MB. There was no memory consumed. Max. memory is 8.0GB. [2023-04-02 22:55:30,993 INFO L158 Benchmark]: CACSL2BoogieTranslator took 132.34ms. Allocated memory is still 201.3MB. Free memory was 155.9MB in the beginning and 144.9MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-04-02 22:55:30,993 INFO L158 Benchmark]: Boogie Preprocessor took 21.99ms. Allocated memory is still 201.3MB. Free memory was 144.9MB in the beginning and 142.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-04-02 22:55:30,993 INFO L158 Benchmark]: RCFGBuilder took 293.98ms. Allocated memory is still 201.3MB. Free memory was 142.9MB in the beginning and 129.3MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-04-02 22:55:30,993 INFO L158 Benchmark]: TraceAbstraction took 119219.19ms. Allocated memory was 201.3MB in the beginning and 1.0GB in the end (delta: 814.7MB). Free memory was 128.6MB in the beginning and 687.7MB in the end (delta: -559.1MB). Peak memory consumption was 573.8MB. Max. memory is 8.0GB. [2023-04-02 22:55:30,994 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 201.3MB. Free memory is still 157.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 132.34ms. Allocated memory is still 201.3MB. Free memory was 155.9MB in the beginning and 144.9MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 21.99ms. Allocated memory is still 201.3MB. Free memory was 144.9MB in the beginning and 142.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 293.98ms. Allocated memory is still 201.3MB. Free memory was 142.9MB in the beginning and 129.3MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 119219.19ms. Allocated memory was 201.3MB in the beginning and 1.0GB in the end (delta: 814.7MB). Free memory was 128.6MB in the beginning and 687.7MB in the end (delta: -559.1MB). Peak memory consumption was 573.8MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 38 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 119.2s, OverallIterations: 17, TraceHistogramMax: 17, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 30.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 9.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3 mSolverCounterUnknown, 762 SdHoareTripleChecker+Valid, 16.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 709 mSDsluCounter, 2522 SdHoareTripleChecker+Invalid, 16.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1871 mSDsCounter, 714 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4357 IncrementalHoareTripleChecker+Invalid, 5074 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 714 mSolverCounterUnsat, 651 mSDtfsCounter, 4357 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3256 GetRequests, 2686 SyntacticMatches, 36 SemanticMatches, 534 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5595 ImplicationChecksByTransitivity, 40.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=192occurred in iteration=11, InterpolantAutomatonStates: 206, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 17 MinimizatonAttempts, 117 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 20 LocationsWithAnnotation, 174 PreInvPairs, 220 NumberOfFragments, 3075 HoareAnnotationTreeSize, 174 FomulaSimplifications, 7335 FormulaSimplificationTreeSizeReduction, 1.1s HoareSimplificationTime, 20 FomulaSimplificationsInter, 9886 FormulaSimplificationTreeSizeReductionInter, 8.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 8.3s InterpolantComputationTime, 1199 NumberOfCodeBlocks, 1097 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 2091 ConstructedInterpolants, 0 QuantifiedInterpolants, 9243 SizeOfPredicates, 107 NumberOfNonLiveVariables, 3310 ConjunctsInSsa, 417 ConjunctsInUnsatCore, 29 InterpolantComputations, 4 PerfectInterpolantSequences, 5590/5985 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: OVERALL_TIME: 0.7s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 9, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 55, DAG_INTERPRETER_EARLY_EXITS: 2, TOOLS_POST_APPLICATIONS: 26, TOOLS_POST_TIME: 0.1s, TOOLS_POST_CALL_APPLICATIONS: 51, TOOLS_POST_CALL_TIME: 0.3s, TOOLS_POST_RETURN_APPLICATIONS: 32, TOOLS_POST_RETURN_TIME: 0.2s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 109, TOOLS_QUANTIFIERELIM_TIME: 0.5s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.0s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 138, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 58, DOMAIN_JOIN_TIME: 0.1s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 0, DOMAIN_WIDEN_TIME: 0.0s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 0, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 55, DOMAIN_ISBOTTOM_TIME: 0.0s, LOOP_SUMMARIZER_APPLICATIONS: 0, LOOP_SUMMARIZER_CACHE_MISSES: 0, LOOP_SUMMARIZER_OVERALL_TIME: 0.0s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 0, CALL_SUMMARIZER_APPLICATIONS: 32, CALL_SUMMARIZER_CACHE_MISSES: 5, CALL_SUMMARIZER_OVERALL_TIME: 0.0s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 696, DAG_COMPRESSION_RETAINED_NODES: 156, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((((((((r == 0 && s == 1) && a == c + b) && 0 <= c) && b == y) && k == 1) && yy == y * y) && q == 0) && 1 <= y) && xy == y * x) && a == x) && x <= 2) && p == 1) || !(unknown-#memory_int-unknown[1][0] == 48)) || !(#NULL == 0)) || (((((((((((((r == 0 && y <= 2) && k == 0) && s == 1) && 1 <= a) && b == y) && yy == y * y) && q == 0) && 1 <= y) && xy == y * x) && a == x) && c == x) && x <= 2) && p == 1)) || ((((((((((((s == 0 && y * y <= yy) && b + 1 <= a) && p == 0) && r == 1) && a == y) && b == x) && c + b * 2 == a) && k == 2) && a <= 2) && 1 <= b) && q == 1) && xy == y * x)) || !(2 == unknown-#length-unknown[1])) || !(\valid[3] == 1)) || !(unknown-#length-unknown[3] == 12)) || !(\valid[0] == 0)) || !(unknown-#memory_int-unknown[1][1] == 0)) || !(\valid[1] == 1)) || (((((((((((((r == 0 && a == c + b * k) && s == 1) && 1 <= a) && 0 <= c) && b == y) && yy == y * y) && c + b * 2 <= 2) && q == 0) && 1 <= y) && xy == y * x) && a == x) && x <= 2) && p == 1)) || !(#NULL == 0)) || !(\valid[2] == 1)) || ((((((((((((s == 0 && y * y <= yy) && p == 0) && k == 0) && c == y) && r == 1) && a == y) && b == x) && b + 1 <= c) && a <= 2) && 1 <= b) && q == 1) && xy == y * x)) || unknown-#StackHeapBarrier-unknown <= 0) || ((((((((((((s == 0 && y * y <= yy) && b + 1 <= a) && p == 0) && r == 1) && a == y) && b == x) && k == 1) && c + b <= 2) && 1 <= b) && q == 1) && xy == y * x) && y == c + b)) || !(11 == unknown-#length-unknown[2]) - InvariantResult [Line: 41]: Loop Invariant Derived loop invariant: (((((((((((((((((((((((1 <= x && y <= 2) && a == y * r + p * x) && (y * r + a * y + p * x == a + p * xy + r * yy || b <= a)) && 0 <= c) && b <= 0) && c <= 0) && 0 <= b) && 1 <= y) && q * x + y * s == 0) && x <= 2) || !(unknown-#memory_int-unknown[1][0] == 48)) || !(#NULL == 0)) || !(2 == unknown-#length-unknown[1])) || ((((((((((((s == 0 && y * y <= yy) && b + 1 <= a) && p == 0) && r == 1) && a == y) && c < b * 2) && b == x) && b <= c) && a <= 2) && q == 1) && xy == y * x) && (y + k * xy + c * y == c + yy + k * x || !(c + k * x == y)))) || !(\valid[3] == 1)) || !(unknown-#length-unknown[3] == 12)) || !(\valid[0] == 0)) || !(unknown-#memory_int-unknown[1][1] == 0)) || !(\valid[1] == 1)) || !(#NULL == 0)) || (((((((((((((r == 0 && y <= 2) && k == 0) && s == 1) && 1 <= a) && b == y) && yy == y * y) && q == 0) && c == 0) && 1 <= y) && xy == y * x) && a == x) && x <= 2) && p == 1)) || !(\valid[2] == 1)) || unknown-#StackHeapBarrier-unknown <= 0) || !(11 == unknown-#length-unknown[2]) RESULT: Ultimate proved your program to be correct! [2023-04-02 22:55:31,140 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...