/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/hard2_valuebound100.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 23:09:33,206 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 23:09:33,207 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 23:09:33,227 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 23:09:33,227 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 23:09:33,228 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 23:09:33,234 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 23:09:33,236 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 23:09:33,237 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 23:09:33,240 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 23:09:33,241 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 23:09:33,242 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 23:09:33,242 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 23:09:33,246 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 23:09:33,246 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 23:09:33,247 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 23:09:33,248 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 23:09:33,248 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 23:09:33,250 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 23:09:33,253 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 23:09:33,254 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 23:09:33,254 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 23:09:33,255 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 23:09:33,256 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 23:09:33,262 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-02 23:09:33,262 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-02 23:09:33,262 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-02 23:09:33,263 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-02 23:09:33,264 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-02 23:09:33,264 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-02 23:09:33,265 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 23:09:33,265 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 23:09:33,266 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 23:09:33,266 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 23:09:33,267 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 23:09:33,267 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 23:09:33,267 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 23:09:33,268 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 23:09:33,268 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 23:09:33,268 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 23:09:33,269 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 23:09:33,270 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-04-02 23:09:33,291 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 23:09:33,291 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 23:09:33,291 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 23:09:33,291 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 23:09:33,292 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 23:09:33,292 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 23:09:33,292 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-02 23:09:33,292 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-02 23:09:33,292 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-02 23:09:33,292 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-02 23:09:33,293 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-02 23:09:33,293 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-02 23:09:33,293 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-02 23:09:33,293 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-02 23:09:33,293 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-02 23:09:33,293 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-02 23:09:33,293 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-02 23:09:33,294 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-02 23:09:33,294 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 23:09:33,294 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 23:09:33,294 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 23:09:33,294 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 23:09:33,294 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 23:09:33,294 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 23:09:33,294 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 23:09:33,294 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 23:09:33,295 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 23:09:33,295 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 23:09:33,295 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 23:09:33,295 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 23:09:33,295 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 23:09:33,295 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 23:09:33,295 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 23:09:33,295 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 23:09:33,295 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-02 23:09:33,295 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 23:09:33,295 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 23:09:33,296 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-02 23:09:33,296 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 23:09:33,296 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 23:09:33,296 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-02 23:09:33,296 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-02 23:09:33,479 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 23:09:33,511 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 23:09:33,513 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 23:09:33,514 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 23:09:33,514 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 23:09:33,515 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound100.c [2023-04-02 23:09:34,449 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 23:09:34,599 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 23:09:34,599 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound100.c [2023-04-02 23:09:34,603 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0daf0e4d/c327bc8a15ae4a27989dad42004aa885/FLAG26c3d682c [2023-04-02 23:09:34,612 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0daf0e4d/c327bc8a15ae4a27989dad42004aa885 [2023-04-02 23:09:34,614 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 23:09:34,615 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 23:09:34,616 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 23:09:34,616 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 23:09:34,618 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 23:09:34,618 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 11:09:34" (1/1) ... [2023-04-02 23:09:34,619 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c061d32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:09:34, skipping insertion in model container [2023-04-02 23:09:34,619 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 11:09:34" (1/1) ... [2023-04-02 23:09:34,624 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 23:09:34,632 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 23:09:34,716 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/hard2_valuebound100.c[526,539] [2023-04-02 23:09:34,725 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 23:09:34,732 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 23:09:34,740 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/hard2_valuebound100.c[526,539] [2023-04-02 23:09:34,743 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 23:09:34,752 INFO L208 MainTranslator]: Completed translation [2023-04-02 23:09:34,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:09:34 WrapperNode [2023-04-02 23:09:34,753 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 23:09:34,753 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 23:09:34,753 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 23:09:34,753 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 23:09:34,761 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:09:34" (1/1) ... [2023-04-02 23:09:34,761 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:09:34" (1/1) ... [2023-04-02 23:09:34,768 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:09:34" (1/1) ... [2023-04-02 23:09:34,768 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:09:34" (1/1) ... [2023-04-02 23:09:34,771 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:09:34" (1/1) ... [2023-04-02 23:09:34,773 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:09:34" (1/1) ... [2023-04-02 23:09:34,774 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:09:34" (1/1) ... [2023-04-02 23:09:34,774 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:09:34" (1/1) ... [2023-04-02 23:09:34,775 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 23:09:34,776 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 23:09:34,776 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 23:09:34,776 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 23:09:34,776 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:09:34" (1/1) ... [2023-04-02 23:09:34,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 23:09:34,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 23:09:34,804 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-02 23:09:34,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-02 23:09:34,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 23:09:34,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 23:09:34,831 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 23:09:34,832 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-02 23:09:34,832 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-04-02 23:09:34,832 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 23:09:34,832 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 23:09:34,832 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 23:09:34,833 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 23:09:34,833 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 23:09:34,833 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-02 23:09:34,833 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-02 23:09:34,833 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-04-02 23:09:34,833 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 23:09:34,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 23:09:34,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 23:09:34,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 23:09:34,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 23:09:34,833 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 23:09:34,834 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 23:09:34,876 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 23:09:34,878 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 23:09:34,988 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 23:09:35,013 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 23:09:35,014 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-04-02 23:09:35,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 11:09:35 BoogieIcfgContainer [2023-04-02 23:09:35,016 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 23:09:35,021 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 23:09:35,021 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 23:09:35,023 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 23:09:35,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 11:09:34" (1/3) ... [2023-04-02 23:09:35,024 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42d2bb58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 11:09:35, skipping insertion in model container [2023-04-02 23:09:35,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:09:34" (2/3) ... [2023-04-02 23:09:35,024 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42d2bb58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 11:09:35, skipping insertion in model container [2023-04-02 23:09:35,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 11:09:35" (3/3) ... [2023-04-02 23:09:35,025 INFO L112 eAbstractionObserver]: Analyzing ICFG hard2_valuebound100.c [2023-04-02 23:09:35,037 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 23:09:35,037 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 23:09:35,068 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 23:09:35,072 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;@53a3b1db, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-02 23:09:35,072 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 23:09:35,075 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-04-02 23:09:35,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-04-02 23:09:35,080 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:09:35,080 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:09:35,081 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:09:35,084 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:09:35,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1934292817, now seen corresponding path program 1 times [2023-04-02 23:09:35,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:09:35,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352211581] [2023-04-02 23:09:35,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:09:35,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:09:35,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:09:35,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 23:09:35,264 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:09:35,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352211581] [2023-04-02 23:09:35,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352211581] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:09:35,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 23:09:35,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 23:09:35,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893540345] [2023-04-02 23:09:35,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:09:35,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 23:09:35,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:09:35,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 23:09:35,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-02 23:09:35,289 INFO L87 Difference]: Start difference. First operand has 30 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-02 23:09:35,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:09:35,357 INFO L93 Difference]: Finished difference Result 63 states and 100 transitions. [2023-04-02 23:09:35,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-02 23:09:35,360 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 14 [2023-04-02 23:09:35,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:09:35,364 INFO L225 Difference]: With dead ends: 63 [2023-04-02 23:09:35,365 INFO L226 Difference]: Without dead ends: 36 [2023-04-02 23:09:35,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-02 23:09:35,369 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 11 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-02 23:09:35,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 99 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 23:09:35,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2023-04-02 23:09:35,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 30. [2023-04-02 23:09:35,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 10 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-04-02 23:09:35,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2023-04-02 23:09:35,396 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 14 [2023-04-02 23:09:35,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:09:35,396 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2023-04-02 23:09:35,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-02 23:09:35,397 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2023-04-02 23:09:35,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-04-02 23:09:35,397 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:09:35,397 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:09:35,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 23:09:35,398 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:09:35,421 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:09:35,422 INFO L85 PathProgramCache]: Analyzing trace with hash 667189618, now seen corresponding path program 1 times [2023-04-02 23:09:35,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:09:35,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685430810] [2023-04-02 23:09:35,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:09:35,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:09:35,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:09:35,566 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 23:09:35,566 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:09:35,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685430810] [2023-04-02 23:09:35,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685430810] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:09:35,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 23:09:35,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 23:09:35,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133876452] [2023-04-02 23:09:35,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:09:35,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 23:09:35,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:09:35,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 23:09:35,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-02 23:09:35,568 INFO L87 Difference]: Start difference. First operand 30 states and 36 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, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-04-02 23:09:35,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:09:35,631 INFO L93 Difference]: Finished difference Result 42 states and 51 transitions. [2023-04-02 23:09:35,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-02 23:09:35,631 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, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 19 [2023-04-02 23:09:35,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:09:35,632 INFO L225 Difference]: With dead ends: 42 [2023-04-02 23:09:35,632 INFO L226 Difference]: Without dead ends: 40 [2023-04-02 23:09:35,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-02 23:09:35,633 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 8 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-02 23:09:35,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 86 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 23:09:35,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-04-02 23:09:35,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 34. [2023-04-02 23:09:35,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 19 states have internal predecessors, (21), 10 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-04-02 23:09:35,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2023-04-02 23:09:35,640 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 19 [2023-04-02 23:09:35,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:09:35,641 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2023-04-02 23:09:35,641 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, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-04-02 23:09:35,641 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2023-04-02 23:09:35,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-04-02 23:09:35,641 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:09:35,641 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:09:35,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 23:09:35,642 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:09:35,642 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:09:35,642 INFO L85 PathProgramCache]: Analyzing trace with hash 203307953, now seen corresponding path program 1 times [2023-04-02 23:09:35,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:09:35,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445592708] [2023-04-02 23:09:35,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:09:35,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:09:35,652 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 23:09:35,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [613118478] [2023-04-02 23:09:35,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:09:35,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:09:35,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 23:09:35,670 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 23:09:35,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-02 23:09:35,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:09:35,748 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 19 conjunts are in the unsatisfiable core [2023-04-02 23:09:35,752 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 23:09:35,927 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-02 23:09:35,928 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 23:09:36,082 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-02 23:09:36,083 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:09:36,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445592708] [2023-04-02 23:09:36,083 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 23:09:36,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [613118478] [2023-04-02 23:09:36,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [613118478] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 23:09:36,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [237500508] [2023-04-02 23:09:36,113 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2023-04-02 23:09:36,114 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 23:09:36,116 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 23:09:36,120 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 23:09:36,128 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 23:09:36,214 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-02 23:09:36,399 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 11 for LOIs [2023-04-02 23:09:36,406 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 29 for LOIs [2023-04-02 23:09:36,418 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-02 23:09:36,428 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 23:09:36,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [237500508] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:09:36,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-04-02 23:09:36,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [8, 7] total 22 [2023-04-02 23:09:36,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308818708] [2023-04-02 23:09:36,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:09:36,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-02 23:09:36,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:09:36,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-02 23:09:36,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=384, Unknown=0, NotChecked=0, Total=462 [2023-04-02 23:09:36,656 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand has 12 states, 8 states have (on average 1.25) internal successors, (10), 6 states have internal predecessors, (10), 4 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-04-02 23:09:37,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:09:37,635 INFO L93 Difference]: Finished difference Result 69 states and 83 transitions. [2023-04-02 23:09:37,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-02 23:09:37,636 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 8 states have (on average 1.25) internal successors, (10), 6 states have internal predecessors, (10), 4 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 24 [2023-04-02 23:09:37,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:09:37,637 INFO L225 Difference]: With dead ends: 69 [2023-04-02 23:09:37,638 INFO L226 Difference]: Without dead ends: 51 [2023-04-02 23:09:37,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=155, Invalid=715, Unknown=0, NotChecked=0, Total=870 [2023-04-02 23:09:37,641 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 63 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 23:09:37,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 5 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 23:09:37,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-04-02 23:09:37,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2023-04-02 23:09:37,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 29 states have (on average 1.103448275862069) internal successors, (32), 30 states have internal predecessors, (32), 13 states have call successors, (13), 9 states have call predecessors, (13), 8 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-04-02 23:09:37,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 56 transitions. [2023-04-02 23:09:37,667 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 56 transitions. Word has length 24 [2023-04-02 23:09:37,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:09:37,667 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 56 transitions. [2023-04-02 23:09:37,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 8 states have (on average 1.25) internal successors, (10), 6 states have internal predecessors, (10), 4 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-04-02 23:09:37,668 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 56 transitions. [2023-04-02 23:09:37,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-04-02 23:09:37,668 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:09:37,669 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:09:37,689 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 23:09:37,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:09:37,876 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:09:37,876 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:09:37,876 INFO L85 PathProgramCache]: Analyzing trace with hash 856949456, now seen corresponding path program 1 times [2023-04-02 23:09:37,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:09:37,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010507258] [2023-04-02 23:09:37,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:09:37,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:09:37,885 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 23:09:37,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [618563118] [2023-04-02 23:09:37,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:09:37,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:09:37,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 23:09:37,887 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 23:09:37,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-02 23:09:37,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:09:37,951 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 23 conjunts are in the unsatisfiable core [2023-04-02 23:09:37,952 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 23:09:38,025 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 9 proven. 17 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-04-02 23:09:38,026 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 23:09:38,100 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 11 proven. 13 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-04-02 23:09:38,100 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:09:38,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010507258] [2023-04-02 23:09:38,100 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 23:09:38,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [618563118] [2023-04-02 23:09:38,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [618563118] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 23:09:38,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1954574905] [2023-04-02 23:09:38,102 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2023-04-02 23:09:38,102 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 23:09:38,102 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 23:09:38,103 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 23:09:38,103 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 23:09:38,132 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-02 23:09:38,638 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-04-02 23:09:38,641 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 29 for LOIs [2023-04-02 23:09:38,647 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-02 23:09:38,653 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 23:09:39,091 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '922#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-04-02 23:09:39,092 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 23:09:39,092 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-02 23:09:39,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 13 [2023-04-02 23:09:39,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754926562] [2023-04-02 23:09:39,092 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-02 23:09:39,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-02 23:09:39,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:09:39,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-02 23:09:39,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=472, Unknown=0, NotChecked=0, Total=552 [2023-04-02 23:09:39,093 INFO L87 Difference]: Start difference. First operand 51 states and 56 transitions. Second operand has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 11 states have internal predecessors, (24), 6 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (11), 4 states have call predecessors, (11), 6 states have call successors, (11) [2023-04-02 23:09:39,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:09:39,290 INFO L93 Difference]: Finished difference Result 85 states and 106 transitions. [2023-04-02 23:09:39,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-02 23:09:39,294 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 11 states have internal predecessors, (24), 6 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (11), 4 states have call predecessors, (11), 6 states have call successors, (11) Word has length 41 [2023-04-02 23:09:39,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:09:39,297 INFO L225 Difference]: With dead ends: 85 [2023-04-02 23:09:39,297 INFO L226 Difference]: Without dead ends: 72 [2023-04-02 23:09:39,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 96 SyntacticMatches, 5 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=89, Invalid=511, Unknown=0, NotChecked=0, Total=600 [2023-04-02 23:09:39,301 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 24 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 23:09:39,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 119 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 23:09:39,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2023-04-02 23:09:39,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2023-04-02 23:09:39,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 39 states have (on average 1.1025641025641026) internal successors, (43), 42 states have internal predecessors, (43), 23 states have call successors, (23), 10 states have call predecessors, (23), 9 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2023-04-02 23:09:39,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 86 transitions. [2023-04-02 23:09:39,330 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 86 transitions. Word has length 41 [2023-04-02 23:09:39,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:09:39,330 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 86 transitions. [2023-04-02 23:09:39,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 11 states have internal predecessors, (24), 6 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (11), 4 states have call predecessors, (11), 6 states have call successors, (11) [2023-04-02 23:09:39,330 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 86 transitions. [2023-04-02 23:09:39,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-04-02 23:09:39,332 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:09:39,332 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:09:39,337 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-04-02 23:09:39,536 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,SelfDestructingSolverStorable3 [2023-04-02 23:09:39,537 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:09:39,537 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:09:39,537 INFO L85 PathProgramCache]: Analyzing trace with hash -1871718208, now seen corresponding path program 1 times [2023-04-02 23:09:39,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:09:39,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522159466] [2023-04-02 23:09:39,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:09:39,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:09:39,552 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 23:09:39,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1084834274] [2023-04-02 23:09:39,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:09:39,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:09:39,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 23:09:39,555 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 23:09:39,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-02 23:09:39,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:09:39,600 INFO L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 17 conjunts are in the unsatisfiable core [2023-04-02 23:09:39,605 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 23:09:39,667 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-04-02 23:09:39,668 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 23:09:39,750 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 13 proven. 16 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-04-02 23:09:39,751 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:09:39,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522159466] [2023-04-02 23:09:39,751 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 23:09:39,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1084834274] [2023-04-02 23:09:39,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1084834274] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 23:09:39,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1770195025] [2023-04-02 23:09:39,752 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2023-04-02 23:09:39,752 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 23:09:39,753 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 23:09:39,753 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 23:09:39,753 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 23:09:39,769 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-02 23:09:40,178 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-04-02 23:09:40,181 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 29 for LOIs [2023-04-02 23:09:40,184 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-02 23:09:40,206 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 23:09:40,582 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1476#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-04-02 23:09:40,583 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 23:09:40,583 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-02 23:09:40,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2023-04-02 23:09:40,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346799040] [2023-04-02 23:09:40,583 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-02 23:09:40,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-02 23:09:40,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:09:40,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-02 23:09:40,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2023-04-02 23:09:40,584 INFO L87 Difference]: Start difference. First operand 72 states and 86 transitions. Second operand has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 10 states have internal predecessors, (27), 4 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) [2023-04-02 23:09:40,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:09:40,682 INFO L93 Difference]: Finished difference Result 81 states and 96 transitions. [2023-04-02 23:09:40,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-02 23:09:40,682 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 10 states have internal predecessors, (27), 4 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) Word has length 48 [2023-04-02 23:09:40,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:09:40,684 INFO L225 Difference]: With dead ends: 81 [2023-04-02 23:09:40,684 INFO L226 Difference]: Without dead ends: 79 [2023-04-02 23:09:40,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 118 SyntacticMatches, 5 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=94, Invalid=458, Unknown=0, NotChecked=0, Total=552 [2023-04-02 23:09:40,685 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 19 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 23:09:40,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 73 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 23:09:40,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2023-04-02 23:09:40,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 78. [2023-04-02 23:09:40,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 43 states have (on average 1.1162790697674418) internal successors, (48), 46 states have internal predecessors, (48), 24 states have call successors, (24), 11 states have call predecessors, (24), 10 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2023-04-02 23:09:40,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 93 transitions. [2023-04-02 23:09:40,712 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 93 transitions. Word has length 48 [2023-04-02 23:09:40,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:09:40,714 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 93 transitions. [2023-04-02 23:09:40,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 10 states have internal predecessors, (27), 4 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) [2023-04-02 23:09:40,714 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 93 transitions. [2023-04-02 23:09:40,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-04-02 23:09:40,716 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:09:40,716 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 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] [2023-04-02 23:09:40,723 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 23:09:40,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:09:40,923 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:09:40,923 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:09:40,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1494414942, now seen corresponding path program 1 times [2023-04-02 23:09:40,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:09:40,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677763749] [2023-04-02 23:09:40,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:09:40,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:09:40,933 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 23:09:40,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1192969486] [2023-04-02 23:09:40,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:09:40,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:09:40,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 23:09:40,936 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 23:09:40,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-04-02 23:09:40,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:09:40,982 INFO L262 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 31 conjunts are in the unsatisfiable core [2023-04-02 23:09:40,983 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 23:09:41,133 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 15 proven. 29 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2023-04-02 23:09:41,133 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 23:09:42,316 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 15 proven. 29 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2023-04-02 23:09:42,316 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:09:42,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677763749] [2023-04-02 23:09:42,317 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 23:09:42,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1192969486] [2023-04-02 23:09:42,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1192969486] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 23:09:42,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [13074890] [2023-04-02 23:09:42,318 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2023-04-02 23:09:42,318 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 23:09:42,319 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 23:09:42,319 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 23:09:42,319 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 23:09:42,342 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-02 23:09:42,875 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-04-02 23:09:42,879 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 29 for LOIs [2023-04-02 23:09:42,884 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-02 23:09:42,888 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 23:09:43,318 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2107#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-04-02 23:09:43,318 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 23:09:43,318 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-02 23:09:43,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2023-04-02 23:09:43,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094257256] [2023-04-02 23:09:43,319 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-02 23:09:43,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-04-02 23:09:43,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:09:43,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-04-02 23:09:43,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=652, Unknown=0, NotChecked=0, Total=756 [2023-04-02 23:09:43,320 INFO L87 Difference]: Start difference. First operand 78 states and 93 transitions. Second operand has 15 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 13 states have internal predecessors, (32), 8 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (18), 5 states have call predecessors, (18), 6 states have call successors, (18) [2023-04-02 23:09:44,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:09:44,656 INFO L93 Difference]: Finished difference Result 104 states and 116 transitions. [2023-04-02 23:09:44,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-02 23:09:44,659 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 13 states have internal predecessors, (32), 8 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (18), 5 states have call predecessors, (18), 6 states have call successors, (18) Word has length 60 [2023-04-02 23:09:44,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:09:44,660 INFO L225 Difference]: With dead ends: 104 [2023-04-02 23:09:44,660 INFO L226 Difference]: Without dead ends: 102 [2023-04-02 23:09:44,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 149 SyntacticMatches, 5 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=140, Invalid=852, Unknown=0, NotChecked=0, Total=992 [2023-04-02 23:09:44,661 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 32 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 23:09:44,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 128 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 23:09:44,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2023-04-02 23:09:44,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 100. [2023-04-02 23:09:44,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 59 states have (on average 1.0847457627118644) internal successors, (64), 63 states have internal predecessors, (64), 25 states have call successors, (25), 16 states have call predecessors, (25), 15 states have return successors, (22), 20 states have call predecessors, (22), 22 states have call successors, (22) [2023-04-02 23:09:44,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 111 transitions. [2023-04-02 23:09:44,684 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 111 transitions. Word has length 60 [2023-04-02 23:09:44,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:09:44,684 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 111 transitions. [2023-04-02 23:09:44,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 13 states have internal predecessors, (32), 8 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (18), 5 states have call predecessors, (18), 6 states have call successors, (18) [2023-04-02 23:09:44,684 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 111 transitions. [2023-04-02 23:09:44,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-04-02 23:09:44,685 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:09:44,685 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 2, 2, 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] [2023-04-02 23:09:44,692 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-04-02 23:09:44,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:09:44,890 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:09:44,890 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:09:44,890 INFO L85 PathProgramCache]: Analyzing trace with hash 920785569, now seen corresponding path program 1 times [2023-04-02 23:09:44,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:09:44,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655374318] [2023-04-02 23:09:44,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:09:44,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:09:44,900 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 23:09:44,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1675716650] [2023-04-02 23:09:44,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:09:44,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:09:44,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 23:09:44,901 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 23:09:44,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-04-02 23:09:44,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:09:44,943 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 33 conjunts are in the unsatisfiable core [2023-04-02 23:09:44,945 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 23:09:45,110 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 19 proven. 37 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2023-04-02 23:09:45,111 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 23:09:45,580 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 19 proven. 37 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2023-04-02 23:09:45,580 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:09:45,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655374318] [2023-04-02 23:09:45,580 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 23:09:45,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1675716650] [2023-04-02 23:09:45,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1675716650] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 23:09:45,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1235350484] [2023-04-02 23:09:45,582 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2023-04-02 23:09:45,582 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 23:09:45,582 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 23:09:45,582 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 23:09:45,582 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 23:09:45,596 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-02 23:09:46,122 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-04-02 23:09:46,125 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 29 for LOIs [2023-04-02 23:09:46,128 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-02 23:09:46,132 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 23:09:46,573 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2873#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-04-02 23:09:46,573 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 23:09:46,573 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-02 23:09:46,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2023-04-02 23:09:46,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518060719] [2023-04-02 23:09:46,573 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-02 23:09:46,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-04-02 23:09:46,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:09:46,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-04-02 23:09:46,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=794, Unknown=0, NotChecked=0, Total=930 [2023-04-02 23:09:46,575 INFO L87 Difference]: Start difference. First operand 100 states and 111 transitions. Second operand has 17 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 10 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (22), 7 states have call predecessors, (22), 8 states have call successors, (22) [2023-04-02 23:09:46,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:09:46,994 INFO L93 Difference]: Finished difference Result 122 states and 141 transitions. [2023-04-02 23:09:46,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-02 23:09:46,995 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 10 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (22), 7 states have call predecessors, (22), 8 states have call successors, (22) Word has length 71 [2023-04-02 23:09:46,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:09:46,995 INFO L225 Difference]: With dead ends: 122 [2023-04-02 23:09:46,995 INFO L226 Difference]: Without dead ends: 107 [2023-04-02 23:09:46,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 179 SyntacticMatches, 5 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=180, Invalid=1010, Unknown=0, NotChecked=0, Total=1190 [2023-04-02 23:09:46,996 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 29 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 23:09:46,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 100 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 23:09:46,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2023-04-02 23:09:47,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 93. [2023-04-02 23:09:47,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 56 states have (on average 1.0892857142857142) internal successors, (61), 58 states have internal predecessors, (61), 21 states have call successors, (21), 16 states have call predecessors, (21), 15 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2023-04-02 23:09:47,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 101 transitions. [2023-04-02 23:09:47,019 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 101 transitions. Word has length 71 [2023-04-02 23:09:47,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:09:47,019 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 101 transitions. [2023-04-02 23:09:47,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 10 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (22), 7 states have call predecessors, (22), 8 states have call successors, (22) [2023-04-02 23:09:47,019 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 101 transitions. [2023-04-02 23:09:47,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-04-02 23:09:47,020 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:09:47,020 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 3, 3, 3, 3, 3, 3, 3, 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 23:09:47,024 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-04-02 23:09:47,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:09:47,224 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:09:47,225 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:09:47,225 INFO L85 PathProgramCache]: Analyzing trace with hash -248496609, now seen corresponding path program 1 times [2023-04-02 23:09:47,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:09:47,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821265311] [2023-04-02 23:09:47,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:09:47,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:09:47,230 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 23:09:47,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1713647983] [2023-04-02 23:09:47,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:09:47,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:09:47,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 23:09:47,231 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 23:09:47,233 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-04-02 23:09:47,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:09:47,286 INFO L262 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-02 23:09:47,288 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 23:09:47,311 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2023-04-02 23:09:47,312 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 23:09:47,312 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:09:47,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821265311] [2023-04-02 23:09:47,312 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 23:09:47,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1713647983] [2023-04-02 23:09:47,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1713647983] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:09:47,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 23:09:47,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 23:09:47,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323596879] [2023-04-02 23:09:47,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:09:47,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 23:09:47,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:09:47,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 23:09:47,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-04-02 23:09:47,313 INFO L87 Difference]: Start difference. First operand 93 states and 101 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 5 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2023-04-02 23:09:47,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:09:47,368 INFO L93 Difference]: Finished difference Result 100 states and 107 transitions. [2023-04-02 23:09:47,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 23:09:47,369 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 5 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) Word has length 81 [2023-04-02 23:09:47,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:09:47,370 INFO L225 Difference]: With dead ends: 100 [2023-04-02 23:09:47,370 INFO L226 Difference]: Without dead ends: 88 [2023-04-02 23:09:47,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-04-02 23:09:47,370 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 3 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-02 23:09:47,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 84 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 23:09:47,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2023-04-02 23:09:47,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2023-04-02 23:09:47,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 53 states have (on average 1.0566037735849056) internal successors, (56), 54 states have internal predecessors, (56), 20 states have call successors, (20), 15 states have call predecessors, (20), 14 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-04-02 23:09:47,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 94 transitions. [2023-04-02 23:09:47,390 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 94 transitions. Word has length 81 [2023-04-02 23:09:47,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:09:47,390 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 94 transitions. [2023-04-02 23:09:47,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 5 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2023-04-02 23:09:47,391 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 94 transitions. [2023-04-02 23:09:47,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-04-02 23:09:47,391 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:09:47,391 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 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] [2023-04-02 23:09:47,398 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 23:09:47,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:09:47,596 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:09:47,596 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:09:47,596 INFO L85 PathProgramCache]: Analyzing trace with hash 761596098, now seen corresponding path program 2 times [2023-04-02 23:09:47,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:09:47,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848470384] [2023-04-02 23:09:47,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:09:47,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:09:47,602 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 23:09:47,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [570050597] [2023-04-02 23:09:47,603 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-04-02 23:09:47,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:09:47,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 23:09:47,604 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 23:09:47,606 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-04-02 23:09:47,643 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-04-02 23:09:47,643 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 23:09:47,644 INFO L262 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 31 conjunts are in the unsatisfiable core [2023-04-02 23:09:47,645 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 23:09:47,797 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 41 proven. 34 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2023-04-02 23:09:47,797 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 23:09:48,460 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 41 proven. 29 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked. [2023-04-02 23:09:48,460 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:09:48,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848470384] [2023-04-02 23:09:48,460 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 23:09:48,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [570050597] [2023-04-02 23:09:48,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [570050597] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 23:09:48,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1992249482] [2023-04-02 23:09:48,462 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2023-04-02 23:09:48,462 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 23:09:48,462 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 23:09:48,462 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 23:09:48,462 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 23:09:48,477 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-02 23:09:48,984 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-04-02 23:09:48,986 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 29 for LOIs [2023-04-02 23:09:48,989 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-02 23:09:48,992 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 23:09:49,483 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4239#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-04-02 23:09:49,483 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 23:09:49,483 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-02 23:09:49,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 17 [2023-04-02 23:09:49,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522185349] [2023-04-02 23:09:49,483 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-02 23:09:49,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-04-02 23:09:49,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:09:49,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-04-02 23:09:49,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=746, Unknown=0, NotChecked=0, Total=870 [2023-04-02 23:09:49,485 INFO L87 Difference]: Start difference. First operand 88 states and 94 transitions. Second operand has 17 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 16 states have internal predecessors, (35), 10 states have call successors, (26), 3 states have call predecessors, (26), 2 states have return successors, (23), 8 states have call predecessors, (23), 10 states have call successors, (23) [2023-04-02 23:09:55,547 WARN L223 SmtUtils]: Spent 5.91s on a formula simplification. DAG size of input: 38 DAG size of output: 36 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-04-02 23:09:57,638 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 23:09:58,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:09:58,103 INFO L93 Difference]: Finished difference Result 120 states and 138 transitions. [2023-04-02 23:09:58,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-02 23:09:58,104 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 16 states have internal predecessors, (35), 10 states have call successors, (26), 3 states have call predecessors, (26), 2 states have return successors, (23), 8 states have call predecessors, (23), 10 states have call successors, (23) Word has length 82 [2023-04-02 23:09:58,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:09:58,107 INFO L225 Difference]: With dead ends: 120 [2023-04-02 23:09:58,107 INFO L226 Difference]: Without dead ends: 118 [2023-04-02 23:09:58,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 211 SyntacticMatches, 7 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 302 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=146, Invalid=846, Unknown=0, NotChecked=0, Total=992 [2023-04-02 23:09:58,109 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 26 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 35 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-04-02 23:09:58,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 138 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 304 Invalid, 1 Unknown, 0 Unchecked, 2.6s Time] [2023-04-02 23:09:58,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2023-04-02 23:09:58,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 116. [2023-04-02 23:09:58,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 68 states have (on average 1.0735294117647058) internal successors, (73), 70 states have internal predecessors, (73), 31 states have call successors, (31), 17 states have call predecessors, (31), 16 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2023-04-02 23:09:58,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 133 transitions. [2023-04-02 23:09:58,147 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 133 transitions. Word has length 82 [2023-04-02 23:09:58,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:09:58,148 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 133 transitions. [2023-04-02 23:09:58,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 16 states have internal predecessors, (35), 10 states have call successors, (26), 3 states have call predecessors, (26), 2 states have return successors, (23), 8 states have call predecessors, (23), 10 states have call successors, (23) [2023-04-02 23:09:58,148 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 133 transitions. [2023-04-02 23:09:58,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-04-02 23:09:58,152 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:09:58,152 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 3, 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] [2023-04-02 23:09:58,158 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-04-02 23:09:58,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:09:58,361 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:09:58,362 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:09:58,362 INFO L85 PathProgramCache]: Analyzing trace with hash 2082694307, now seen corresponding path program 3 times [2023-04-02 23:09:58,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:09:58,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684448676] [2023-04-02 23:09:58,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:09:58,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:09:58,369 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 23:09:58,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1817128275] [2023-04-02 23:09:58,369 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-04-02 23:09:58,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:09:58,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 23:09:58,370 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 23:09:58,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-04-02 23:09:58,414 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-04-02 23:09:58,415 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 23:09:58,416 INFO L262 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 46 conjunts are in the unsatisfiable core [2023-04-02 23:09:58,418 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 23:09:58,731 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 54 proven. 61 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2023-04-02 23:09:58,731 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 23:10:32,793 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 54 proven. 61 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2023-04-02 23:10:32,793 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:10:32,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684448676] [2023-04-02 23:10:32,793 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 23:10:32,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1817128275] [2023-04-02 23:10:32,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1817128275] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 23:10:32,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1073096369] [2023-04-02 23:10:32,797 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2023-04-02 23:10:32,798 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 23:10:32,798 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 23:10:32,798 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 23:10:32,798 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 23:10:32,817 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-02 23:10:33,364 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-04-02 23:10:33,366 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 29 for LOIs [2023-04-02 23:10:33,369 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-02 23:10:33,372 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 23:10:34,570 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5166#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-04-02 23:10:34,570 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 23:10:34,570 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-02 23:10:34,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 22 [2023-04-02 23:10:34,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990163767] [2023-04-02 23:10:34,570 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-02 23:10:34,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-04-02 23:10:34,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:10:34,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-04-02 23:10:34,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=1020, Unknown=0, NotChecked=0, Total=1190 [2023-04-02 23:10:34,572 INFO L87 Difference]: Start difference. First operand 116 states and 133 transitions. Second operand has 22 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 19 states have internal predecessors, (40), 15 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (28), 11 states have call predecessors, (28), 13 states have call successors, (28) [2023-04-02 23:11:31,377 WARN L223 SmtUtils]: Spent 55.94s on a formula simplification. DAG size of input: 188 DAG size of output: 145 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-04-02 23:11:33,448 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-04-02 23:11:35,492 WARN L539 Checker$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 23:11:48,912 WARN L223 SmtUtils]: Spent 13.04s on a formula simplification. DAG size of input: 129 DAG size of output: 101 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-04-02 23:12:04,196 WARN L223 SmtUtils]: Spent 14.23s on a formula simplification. DAG size of input: 99 DAG size of output: 96 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-04-02 23:12:07,474 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-04-02 23:12:09,542 WARN L539 Checker$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 23:12:11,019 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-04-02 23:13:16,823 WARN L223 SmtUtils]: Spent 1.05m on a formula simplification. DAG size of input: 169 DAG size of output: 153 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-04-02 23:13:18,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:13:18,735 INFO L93 Difference]: Finished difference Result 156 states and 179 transitions. [2023-04-02 23:13:18,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-04-02 23:13:18,736 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 19 states have internal predecessors, (40), 15 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (28), 11 states have call predecessors, (28), 13 states have call successors, (28) Word has length 89 [2023-04-02 23:13:18,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:13:18,737 INFO L225 Difference]: With dead ends: 156 [2023-04-02 23:13:18,737 INFO L226 Difference]: Without dead ends: 154 [2023-04-02 23:13:18,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 227 SyntacticMatches, 8 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 542 ImplicationChecksByTransitivity, 159.2s TimeCoverageRelationStatistics Valid=291, Invalid=1515, Unknown=0, NotChecked=0, Total=1806 [2023-04-02 23:13:18,737 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 51 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 514 mSolverCounterSat, 81 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 514 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.5s IncrementalHoareTripleChecker+Time [2023-04-02 23:13:18,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 173 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 514 Invalid, 2 Unknown, 0 Unchecked, 12.5s Time] [2023-04-02 23:13:18,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2023-04-02 23:13:18,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 150. [2023-04-02 23:13:18,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 90 states have (on average 1.0777777777777777) internal successors, (97), 93 states have internal predecessors, (97), 38 states have call successors, (38), 22 states have call predecessors, (38), 21 states have return successors, (36), 34 states have call predecessors, (36), 36 states have call successors, (36) [2023-04-02 23:13:18,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 171 transitions. [2023-04-02 23:13:18,796 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 171 transitions. Word has length 89 [2023-04-02 23:13:18,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:13:18,797 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 171 transitions. [2023-04-02 23:13:18,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 19 states have internal predecessors, (40), 15 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (28), 11 states have call predecessors, (28), 13 states have call successors, (28) [2023-04-02 23:13:18,797 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 171 transitions. [2023-04-02 23:13:18,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-04-02 23:13:18,797 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:13:18,797 INFO L195 NwaCegarLoop]: trace histogram [16, 15, 15, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 23:13:18,802 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-04-02 23:13:19,002 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,SelfDestructingSolverStorable9 [2023-04-02 23:13:19,002 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:13:19,002 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:13:19,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1365671168, now seen corresponding path program 2 times [2023-04-02 23:13:19,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:13:19,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576263126] [2023-04-02 23:13:19,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:13:19,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:13:19,012 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 23:13:19,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [730792662] [2023-04-02 23:13:19,012 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-04-02 23:13:19,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:13:19,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 23:13:19,015 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 23:13:19,017 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-04-02 23:13:19,065 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-04-02 23:13:19,065 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 23:13:19,066 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 29 conjunts are in the unsatisfiable core [2023-04-02 23:13:19,068 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 23:13:19,150 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 113 proven. 39 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2023-04-02 23:13:19,150 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 23:13:19,268 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 110 proven. 2 refuted. 0 times theorem prover too weak. 365 trivial. 0 not checked. [2023-04-02 23:13:19,268 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:13:19,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576263126] [2023-04-02 23:13:19,268 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 23:13:19,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [730792662] [2023-04-02 23:13:19,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [730792662] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 23:13:19,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1017649719] [2023-04-02 23:13:19,270 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2023-04-02 23:13:19,270 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 23:13:19,270 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 23:13:19,270 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 23:13:19,270 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 23:13:19,284 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-02 23:13:19,787 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2023-04-02 23:13:19,789 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 29 for LOIs [2023-04-02 23:13:19,792 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-02 23:13:19,804 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 23:13:20,267 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6270#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0))' at error location [2023-04-02 23:13:20,268 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 23:13:20,268 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-02 23:13:20,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 16 [2023-04-02 23:13:20,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609242312] [2023-04-02 23:13:20,268 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-02 23:13:20,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-04-02 23:13:20,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:13:20,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-04-02 23:13:20,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=750, Unknown=0, NotChecked=0, Total=870 [2023-04-02 23:13:20,269 INFO L87 Difference]: Start difference. First operand 150 states and 171 transitions. Second operand has 16 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 11 states have internal predecessors, (32), 7 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (20), 7 states have call predecessors, (20), 5 states have call successors, (20) [2023-04-02 23:13:20,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:13:20,505 INFO L93 Difference]: Finished difference Result 150 states and 171 transitions. [2023-04-02 23:13:20,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-02 23:13:20,506 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 11 states have internal predecessors, (32), 7 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (20), 7 states have call predecessors, (20), 5 states have call successors, (20) Word has length 100 [2023-04-02 23:13:20,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:13:20,506 INFO L225 Difference]: With dead ends: 150 [2023-04-02 23:13:20,506 INFO L226 Difference]: Without dead ends: 0 [2023-04-02 23:13:20,507 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 265 SyntacticMatches, 6 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 355 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=171, Invalid=1019, Unknown=0, NotChecked=0, Total=1190 [2023-04-02 23:13:20,507 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 39 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 23:13:20,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 75 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 23:13:20,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-04-02 23:13:20,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-04-02 23:13:20,508 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 23:13:20,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-04-02 23:13:20,508 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 100 [2023-04-02 23:13:20,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:13:20,508 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-04-02 23:13:20,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 11 states have internal predecessors, (32), 7 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (20), 7 states have call predecessors, (20), 5 states have call successors, (20) [2023-04-02 23:13:20,508 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-04-02 23:13:20,508 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-04-02 23:13:20,510 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-02 23:13:20,515 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 23:13:20,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:13:20,716 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-04-02 23:13:26,222 INFO L899 garLoopResultBuilder]: For program point reach_errorEXIT(line 8) no Hoare annotation was computed. [2023-04-02 23:13:26,222 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line 8) no Hoare annotation was computed. [2023-04-02 23:13:26,223 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 11 13) the Hoare annotation is: true [2023-04-02 23:13:26,223 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 11 13) no Hoare annotation was computed. [2023-04-02 23:13:26,223 INFO L895 garLoopResultBuilder]: At program point L58(line 58) the Hoare annotation is: (let ((.cse1 (select |#memory_int| 1)) (.cse0 (select |#memory_int| 2))) (or (not (= (select .cse0 0) 104)) (not (= 97 (select .cse0 1))) (and (<= 0 main_~A~0) (<= main_~A~0 100) (= main_~d~0 1) (= main_~B~0 1) (= main_~p~0 1)) (not (= (select .cse1 0) 48)) (not (= 8 (select |#length| 2))) (not (= |#NULL.offset| 0)) (not (= 2 (select |#length| 1))) (not (= (select .cse0 5) 46)) (not (= 100 (select .cse0 3))) (not (= 114 (select .cse0 2))) (not (= (select |#valid| 3) 1)) (not (= (select .cse0 6) 99)) (not (= (select |#length| 3) 12)) (not (= (select .cse0 7) 0)) (not (= (select |#valid| 0) 0)) (not (= (select .cse1 1) 0)) (not (= (select |#valid| 1) 1)) (not (= |#NULL.base| 0)) (not (= (select |#valid| 2) 1)) (not (= (select .cse0 4) 50)) (<= |#StackHeapBarrier| 0))) [2023-04-02 23:13:26,223 INFO L899 garLoopResultBuilder]: For program point mainEXIT(lines 22 61) no Hoare annotation was computed. [2023-04-02 23:13:26,223 INFO L895 garLoopResultBuilder]: At program point L52-2(lines 44 56) the Hoare annotation is: (let ((.cse1 (select |#memory_int| 1)) (.cse0 (select |#memory_int| 2))) (or (not (= (select .cse0 0) 104)) (not (= 97 (select .cse0 1))) (not (= (select .cse1 0) 48)) (not (= 8 (select |#length| 2))) (not (= |#NULL.offset| 0)) (not (= 2 (select |#length| 1))) (not (= (select .cse0 5) 46)) (not (= 100 (select .cse0 3))) (not (= 114 (select .cse0 2))) (not (= (select |#valid| 3) 1)) (not (= (select .cse0 6) 99)) (not (= (select |#length| 3) 12)) (not (= (select .cse0 7) 0)) (not (= (select |#valid| 0) 0)) (not (= (select .cse1 1) 0)) (not (= (select |#valid| 1) 1)) (and (= main_~A~0 (+ main_~q~0 main_~r~0)) (= main_~d~0 main_~p~0) (<= 0 main_~A~0) (<= 1 main_~p~0) (<= main_~A~0 100) (= main_~B~0 1)) (not (= |#NULL.base| 0)) (not (= (select |#valid| 2) 1)) (not (= (select .cse0 4) 50)) (<= |#StackHeapBarrier| 0))) [2023-04-02 23:13:26,223 INFO L899 garLoopResultBuilder]: For program point L46(lines 44 56) no Hoare annotation was computed. [2023-04-02 23:13:26,223 INFO L895 garLoopResultBuilder]: At program point L44-1(lines 44 56) the Hoare annotation is: (let ((.cse1 (select |#memory_int| 1)) (.cse0 (select |#memory_int| 2))) (or (not (= (select .cse0 0) 104)) (not (= 97 (select .cse0 1))) (not (= (select .cse1 0) 48)) (not (= 8 (select |#length| 2))) (not (= |#NULL.offset| 0)) (not (= 2 (select |#length| 1))) (not (= (select .cse0 5) 46)) (not (= 100 (select .cse0 3))) (not (= 114 (select .cse0 2))) (not (= (select |#valid| 3) 1)) (not (= (select .cse0 6) 99)) (not (= (select |#length| 3) 12)) (not (= (select .cse0 7) 0)) (not (= (select |#valid| 0) 0)) (not (= (select .cse1 1) 0)) (not (= (select |#valid| 1) 1)) (not (= |#NULL.base| 0)) (and (= main_~A~0 (+ main_~q~0 main_~r~0)) (<= 0 main_~A~0) (<= main_~A~0 100) (= main_~d~0 1) (= main_~B~0 1) (= main_~p~0 1)) (not (= (select |#valid| 2) 1)) (not (= (select .cse0 4) 50)) (<= |#StackHeapBarrier| 0))) [2023-04-02 23:13:26,223 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 22 61) the Hoare annotation is: true [2023-04-02 23:13:26,223 INFO L895 garLoopResultBuilder]: At program point L36(line 36) the Hoare annotation is: (let ((.cse1 (select |#memory_int| 1)) (.cse2 (<= 0 main_~A~0)) (.cse3 (= main_~A~0 main_~r~0)) (.cse4 (<= main_~A~0 100)) (.cse5 (= main_~q~0 0)) (.cse6 (= main_~B~0 1)) (.cse0 (select |#memory_int| 2))) (or (not (= (select .cse0 0) 104)) (not (= 97 (select .cse0 1))) (not (= (select .cse1 0) 48)) (not (= 8 (select |#length| 2))) (not (= |#NULL.offset| 0)) (not (= 2 (select |#length| 1))) (not (= (select .cse0 5) 46)) (not (= 100 (select .cse0 3))) (not (= 114 (select .cse0 2))) (not (= (select |#valid| 3) 1)) (not (= (select .cse0 6) 99)) (not (= (select |#length| 3) 12)) (not (= (select .cse0 7) 0)) (not (= (select |#valid| 0) 0)) (not (= (select .cse1 1) 0)) (not (= (select |#valid| 1) 1)) (and (= main_~d~0 main_~p~0) .cse2 .cse3 .cse4 .cse5 .cse6 (<= 4 main_~p~0)) (not (= |#NULL.base| 0)) (and .cse3 (= main_~p~0 2) .cse4 (<= 1 main_~r~0) (= main_~d~0 2) .cse5 .cse6) (and .cse2 .cse3 .cse4 (= main_~d~0 1) .cse5 .cse6 (= main_~p~0 1)) (not (= (select |#valid| 2) 1)) (not (= (select .cse0 4) 50)) (<= |#StackHeapBarrier| 0))) [2023-04-02 23:13:26,224 INFO L895 garLoopResultBuilder]: At program point L34-2(lines 34 42) the Hoare annotation is: (let ((.cse1 (select |#memory_int| 1)) (.cse2 (<= 0 main_~A~0)) (.cse3 (= main_~A~0 main_~r~0)) (.cse4 (<= main_~A~0 100)) (.cse5 (= main_~q~0 0)) (.cse6 (= main_~B~0 1)) (.cse0 (select |#memory_int| 2))) (or (not (= (select .cse0 0) 104)) (not (= 97 (select .cse0 1))) (not (= (select .cse1 0) 48)) (not (= 8 (select |#length| 2))) (not (= |#NULL.offset| 0)) (not (= 2 (select |#length| 1))) (not (= (select .cse0 5) 46)) (not (= 100 (select .cse0 3))) (not (= 114 (select .cse0 2))) (not (= (select |#valid| 3) 1)) (not (= (select .cse0 6) 99)) (not (= (select |#length| 3) 12)) (not (= (select .cse0 7) 0)) (not (= (select |#valid| 0) 0)) (not (= (select .cse1 1) 0)) (not (= (select |#valid| 1) 1)) (and (= main_~d~0 main_~p~0) .cse2 .cse3 .cse4 .cse5 .cse6 (<= 4 main_~p~0)) (not (= |#NULL.base| 0)) (and .cse3 (= main_~p~0 2) .cse4 (<= 1 main_~r~0) (= main_~d~0 2) .cse5 .cse6) (and .cse2 .cse3 .cse4 (= main_~d~0 1) .cse5 .cse6 (= main_~p~0 1)) (not (= (select |#valid| 2) 1)) (not (= (select .cse0 4) 50)) (<= |#StackHeapBarrier| 0))) [2023-04-02 23:13:26,224 INFO L899 garLoopResultBuilder]: For program point L59(line 59) no Hoare annotation was computed. [2023-04-02 23:13:26,224 INFO L895 garLoopResultBuilder]: At program point L26(line 26) the Hoare annotation is: (let ((.cse1 (select |#memory_int| 1)) (.cse0 (select |#memory_int| 2))) (or (not (= (select .cse0 0) 104)) (not (= 97 (select .cse0 1))) (not (= (select .cse1 0) 48)) (not (= 8 (select |#length| 2))) (not (= |#NULL.offset| 0)) (not (= 2 (select |#length| 1))) (not (= (select .cse0 5) 46)) (not (= 100 (select .cse0 3))) (not (= 114 (select .cse0 2))) (not (= (select |#valid| 3) 1)) (not (= (select .cse0 6) 99)) (and (<= main_~A~0 2147483647) (<= 0 (+ main_~A~0 2147483648))) (not (= (select |#length| 3) 12)) (not (= (select .cse0 7) 0)) (not (= (select |#valid| 0) 0)) (not (= (select .cse1 1) 0)) (not (= (select |#valid| 1) 1)) (not (= |#NULL.base| 0)) (not (= (select |#valid| 2) 1)) (not (= (select .cse0 4) 50)) (<= |#StackHeapBarrier| 0))) [2023-04-02 23:13:26,224 INFO L899 garLoopResultBuilder]: For program point L26-1(line 26) no Hoare annotation was computed. [2023-04-02 23:13:26,224 INFO L895 garLoopResultBuilder]: At program point L45(line 45) the Hoare annotation is: (let ((.cse1 (select |#memory_int| 1)) (.cse0 (select |#memory_int| 2))) (or (not (= (select .cse0 0) 104)) (not (= 97 (select .cse0 1))) (not (= (select .cse1 0) 48)) (not (= 8 (select |#length| 2))) (not (= |#NULL.offset| 0)) (not (= 2 (select |#length| 1))) (not (= (select .cse0 5) 46)) (not (= 100 (select .cse0 3))) (not (= 114 (select .cse0 2))) (not (= (select |#valid| 3) 1)) (not (= (select .cse0 6) 99)) (not (= (select |#length| 3) 12)) (not (= (select .cse0 7) 0)) (not (= (select |#valid| 0) 0)) (not (= (select .cse1 1) 0)) (not (= (select |#valid| 1) 1)) (and (= main_~A~0 (+ main_~q~0 main_~r~0)) (= main_~d~0 main_~p~0) (<= 0 main_~A~0) (<= 1 main_~p~0) (<= main_~A~0 100) (= main_~B~0 1)) (not (= |#NULL.base| 0)) (not (= (select |#valid| 2) 1)) (not (= (select .cse0 4) 50)) (<= |#StackHeapBarrier| 0))) [2023-04-02 23:13:26,224 INFO L895 garLoopResultBuilder]: At program point L45-1(line 45) the Hoare annotation is: (let ((.cse1 (select |#memory_int| 1)) (.cse0 (select |#memory_int| 2))) (or (not (= (select .cse0 0) 104)) (not (= 97 (select .cse0 1))) (not (= (select .cse1 0) 48)) (not (= 8 (select |#length| 2))) (not (= |#NULL.offset| 0)) (not (= 2 (select |#length| 1))) (not (= (select .cse0 5) 46)) (not (= 100 (select .cse0 3))) (not (= 114 (select .cse0 2))) (not (= (select |#valid| 3) 1)) (not (= (select .cse0 6) 99)) (not (= (select |#length| 3) 12)) (not (= (select .cse0 7) 0)) (not (= (select |#valid| 0) 0)) (not (= (select .cse1 1) 0)) (not (= (select |#valid| 1) 1)) (and (= main_~A~0 (+ main_~q~0 main_~r~0)) (= main_~d~0 main_~p~0) (<= 0 main_~A~0) (<= 1 main_~p~0) (<= main_~A~0 100) (= main_~B~0 1)) (not (= |#NULL.base| 0)) (not (= (select |#valid| 2) 1)) (not (= (select .cse0 4) 50)) (<= |#StackHeapBarrier| 0))) [2023-04-02 23:13:26,224 INFO L899 garLoopResultBuilder]: For program point L37(lines 34 42) no Hoare annotation was computed. [2023-04-02 23:13:26,224 INFO L895 garLoopResultBuilder]: At program point L35(line 35) the Hoare annotation is: (let ((.cse1 (select |#memory_int| 1)) (.cse2 (<= 0 main_~A~0)) (.cse3 (= main_~A~0 main_~r~0)) (.cse4 (<= main_~A~0 100)) (.cse5 (= main_~q~0 0)) (.cse6 (= main_~B~0 1)) (.cse0 (select |#memory_int| 2))) (or (not (= (select .cse0 0) 104)) (not (= 97 (select .cse0 1))) (not (= (select .cse1 0) 48)) (not (= 8 (select |#length| 2))) (not (= |#NULL.offset| 0)) (not (= 2 (select |#length| 1))) (not (= (select .cse0 5) 46)) (not (= 100 (select .cse0 3))) (not (= 114 (select .cse0 2))) (not (= (select |#valid| 3) 1)) (not (= (select .cse0 6) 99)) (not (= (select |#length| 3) 12)) (not (= (select .cse0 7) 0)) (not (= (select |#valid| 0) 0)) (not (= (select .cse1 1) 0)) (not (= (select |#valid| 1) 1)) (and (= main_~d~0 main_~p~0) .cse2 .cse3 .cse4 .cse5 .cse6 (<= 4 main_~p~0)) (not (= |#NULL.base| 0)) (and .cse3 (= main_~p~0 2) .cse4 (<= 1 main_~r~0) (= main_~d~0 2) .cse5 .cse6) (and .cse2 .cse3 .cse4 (= main_~d~0 1) .cse5 .cse6 (= main_~p~0 1)) (not (= (select |#valid| 2) 1)) (not (= (select .cse0 4) 50)) (<= |#StackHeapBarrier| 0))) [2023-04-02 23:13:26,224 INFO L895 garLoopResultBuilder]: At program point L35-1(line 35) the Hoare annotation is: (let ((.cse1 (select |#memory_int| 1)) (.cse2 (<= 0 main_~A~0)) (.cse3 (= main_~A~0 main_~r~0)) (.cse4 (<= main_~A~0 100)) (.cse5 (= main_~q~0 0)) (.cse6 (= main_~B~0 1)) (.cse0 (select |#memory_int| 2))) (or (not (= (select .cse0 0) 104)) (not (= 97 (select .cse0 1))) (not (= (select .cse1 0) 48)) (not (= 8 (select |#length| 2))) (not (= |#NULL.offset| 0)) (not (= 2 (select |#length| 1))) (not (= (select .cse0 5) 46)) (not (= 100 (select .cse0 3))) (not (= 114 (select .cse0 2))) (not (= (select |#valid| 3) 1)) (not (= (select .cse0 6) 99)) (not (= (select |#length| 3) 12)) (not (= (select .cse0 7) 0)) (not (= (select |#valid| 0) 0)) (not (= (select .cse1 1) 0)) (not (= (select |#valid| 1) 1)) (and (= main_~d~0 main_~p~0) .cse2 .cse3 .cse4 .cse5 .cse6 (<= 4 main_~p~0)) (not (= |#NULL.base| 0)) (and .cse3 (= main_~p~0 2) .cse4 (<= 1 main_~r~0) (= main_~d~0 2) .cse5 .cse6) (and .cse2 .cse3 .cse4 (= main_~d~0 1) .cse5 .cse6 (= main_~p~0 1)) (not (= (select |#valid| 2) 1)) (not (= (select .cse0 4) 50)) (<= |#StackHeapBarrier| 0))) [2023-04-02 23:13:26,224 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 23:13:26,224 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2023-04-02 23:13:26,224 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-04-02 23:13:26,224 INFO L895 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: (let ((.cse1 (select |#memory_int| 1)) (.cse0 (select |#memory_int| 2))) (and (= (select .cse0 7) 0) (= (select |#length| 3) 12) (= 114 (select .cse0 2)) (= (select .cse0 6) 99) (= 97 (select .cse0 1)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (select .cse0 4) 50) (= 100 (select .cse0 3)) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= (select .cse0 5) 46) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= 8 (select |#length| 2)) (= (select .cse1 0) 48) (= (select .cse1 1) 0) (= (select .cse0 0) 104) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2023-04-02 23:13:26,225 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-04-02 23:13:26,225 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-04-02 23:13:26,225 INFO L899 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2023-04-02 23:13:26,225 INFO L899 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2023-04-02 23:13:26,225 INFO L899 garLoopResultBuilder]: For program point L15-2(lines 14 20) no Hoare annotation was computed. [2023-04-02 23:13:26,225 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 14 20) no Hoare annotation was computed. [2023-04-02 23:13:26,225 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 14 20) the Hoare annotation is: true [2023-04-02 23:13:26,225 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2023-04-02 23:13:26,227 INFO L445 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1, 1, 1] [2023-04-02 23:13:26,228 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-04-02 23:13:26,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.04 11:13:26 BoogieIcfgContainer [2023-04-02 23:13:26,245 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-04-02 23:13:26,245 INFO L158 Benchmark]: Toolchain (without parser) took 231629.95ms. Allocated memory was 375.4MB in the beginning and 580.9MB in the end (delta: 205.5MB). Free memory was 327.8MB in the beginning and 525.4MB in the end (delta: -197.6MB). Peak memory consumption was 338.0MB. Max. memory is 8.0GB. [2023-04-02 23:13:26,245 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 192.9MB. Free memory is still 140.9MB. There was no memory consumed. Max. memory is 8.0GB. [2023-04-02 23:13:26,245 INFO L158 Benchmark]: CACSL2BoogieTranslator took 136.97ms. Allocated memory is still 375.4MB. Free memory was 327.8MB in the beginning and 317.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-04-02 23:13:26,245 INFO L158 Benchmark]: Boogie Preprocessor took 22.12ms. Allocated memory is still 375.4MB. Free memory was 317.3MB in the beginning and 315.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-04-02 23:13:26,246 INFO L158 Benchmark]: RCFGBuilder took 239.81ms. Allocated memory is still 375.4MB. Free memory was 315.7MB in the beginning and 302.4MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-04-02 23:13:26,246 INFO L158 Benchmark]: TraceAbstraction took 231223.91ms. Allocated memory was 375.4MB in the beginning and 580.9MB in the end (delta: 205.5MB). Free memory was 301.6MB in the beginning and 525.4MB in the end (delta: -223.8MB). Peak memory consumption was 311.8MB. Max. memory is 8.0GB. [2023-04-02 23:13:26,246 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 192.9MB. Free memory is still 140.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 136.97ms. Allocated memory is still 375.4MB. Free memory was 327.8MB in the beginning and 317.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 22.12ms. Allocated memory is still 375.4MB. Free memory was 317.3MB in the beginning and 315.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 239.81ms. Allocated memory is still 375.4MB. Free memory was 315.7MB in the beginning and 302.4MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 231223.91ms. Allocated memory was 375.4MB in the beginning and 580.9MB in the end (delta: 205.5MB). Free memory was 301.6MB in the beginning and 525.4MB in the end (delta: -223.8MB). Peak memory consumption was 311.8MB. 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: 17]: 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, 32 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 231.2s, OverallIterations: 11, TraceHistogramMax: 16, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 176.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 5.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3 mSolverCounterUnknown, 352 SdHoareTripleChecker+Valid, 16.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 305 mSDsluCounter, 1080 SdHoareTripleChecker+Invalid, 16.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 801 mSDsCounter, 423 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2185 IncrementalHoareTripleChecker+Invalid, 2611 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 423 mSolverCounterUnsat, 279 mSDtfsCounter, 2185 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1669 GetRequests, 1377 SyntacticMatches, 41 SemanticMatches, 251 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2276 ImplicationChecksByTransitivity, 170.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=150occurred in iteration=10, InterpolantAutomatonStates: 113, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 11 MinimizatonAttempts, 35 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 16 LocationsWithAnnotation, 77 PreInvPairs, 140 NumberOfFragments, 1839 HoareAnnotationTreeSize, 77 FomulaSimplifications, 28315 FormulaSimplificationTreeSizeReduction, 2.6s HoareSimplificationTime, 16 FomulaSimplificationsInter, 16561 FormulaSimplificationTreeSizeReductionInter, 2.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 38.3s InterpolantComputationTime, 629 NumberOfCodeBlocks, 550 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 1125 ConstructedInterpolants, 0 QuantifiedInterpolants, 13967 SizeOfPredicates, 34 NumberOfNonLiveVariables, 1478 ConjunctsInSsa, 233 ConjunctsInUnsatCore, 19 InterpolantComputations, 3 PerfectInterpolantSequences, 3131/3559 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: 0.3s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 5, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 19, DAG_INTERPRETER_EARLY_EXITS: 1, TOOLS_POST_APPLICATIONS: 14, TOOLS_POST_TIME: 0.0s, TOOLS_POST_CALL_APPLICATIONS: 14, TOOLS_POST_CALL_TIME: 0.1s, TOOLS_POST_RETURN_APPLICATIONS: 8, TOOLS_POST_RETURN_TIME: 0.1s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 36, TOOLS_QUANTIFIERELIM_TIME: 0.2s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.0s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 56, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 12, DOMAIN_JOIN_TIME: 0.0s, 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: 19, 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: 8, CALL_SUMMARIZER_CACHE_MISSES: 3, 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: 137, DAG_COMPRESSION_RETAINED_NODES: 64, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 44]: Loop Invariant Derived loop invariant: (((((((((((((((((((!(unknown-#memory_int-unknown[2][0] == 104) || !(97 == unknown-#memory_int-unknown[2][1])) || !(unknown-#memory_int-unknown[1][0] == 48)) || !(8 == unknown-#length-unknown[2])) || !(#NULL == 0)) || !(2 == unknown-#length-unknown[1])) || !(unknown-#memory_int-unknown[2][5] == 46)) || !(100 == unknown-#memory_int-unknown[2][3])) || !(114 == unknown-#memory_int-unknown[2][2])) || !(\valid[3] == 1)) || !(unknown-#memory_int-unknown[2][6] == 99)) || !(unknown-#length-unknown[3] == 12)) || !(unknown-#memory_int-unknown[2][7] == 0)) || !(\valid[0] == 0)) || !(unknown-#memory_int-unknown[1][1] == 0)) || !(\valid[1] == 1)) || (((((A == q + r && d == p) && 0 <= A) && 1 <= p) && A <= 100) && B == 1)) || !(#NULL == 0)) || !(\valid[2] == 1)) || !(unknown-#memory_int-unknown[2][4] == 50)) || unknown-#StackHeapBarrier-unknown <= 0 - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: (((((((((((((((((((((!(unknown-#memory_int-unknown[2][0] == 104) || !(97 == unknown-#memory_int-unknown[2][1])) || !(unknown-#memory_int-unknown[1][0] == 48)) || !(8 == unknown-#length-unknown[2])) || !(#NULL == 0)) || !(2 == unknown-#length-unknown[1])) || !(unknown-#memory_int-unknown[2][5] == 46)) || !(100 == unknown-#memory_int-unknown[2][3])) || !(114 == unknown-#memory_int-unknown[2][2])) || !(\valid[3] == 1)) || !(unknown-#memory_int-unknown[2][6] == 99)) || !(unknown-#length-unknown[3] == 12)) || !(unknown-#memory_int-unknown[2][7] == 0)) || !(\valid[0] == 0)) || !(unknown-#memory_int-unknown[1][1] == 0)) || !(\valid[1] == 1)) || ((((((d == p && 0 <= A) && A == r) && A <= 100) && q == 0) && B == 1) && 4 <= p)) || !(#NULL == 0)) || ((((((A == r && p == 2) && A <= 100) && 1 <= r) && d == 2) && q == 0) && B == 1)) || ((((((0 <= A && A == r) && A <= 100) && d == 1) && q == 0) && B == 1) && p == 1)) || !(\valid[2] == 1)) || !(unknown-#memory_int-unknown[2][4] == 50)) || unknown-#StackHeapBarrier-unknown <= 0 RESULT: Ultimate proved your program to be correct! [2023-04-02 23:13:26,325 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...