/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/bresenham-ll_unwindbound5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 22:35:35,246 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 22:35:35,248 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 22:35:35,280 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 22:35:35,281 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 22:35:35,283 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 22:35:35,286 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 22:35:35,288 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 22:35:35,290 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 22:35:35,294 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 22:35:35,296 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 22:35:35,298 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 22:35:35,298 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 22:35:35,300 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 22:35:35,301 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 22:35:35,302 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 22:35:35,303 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 22:35:35,304 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 22:35:35,306 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 22:35:35,308 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 22:35:35,309 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 22:35:35,310 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 22:35:35,312 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 22:35:35,313 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 22:35:35,321 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-02 22:35:35,321 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-02 22:35:35,321 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-02 22:35:35,323 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-02 22:35:35,323 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-02 22:35:35,324 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-02 22:35:35,324 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 22:35:35,324 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 22:35:35,326 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 22:35:35,326 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 22:35:35,327 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 22:35:35,327 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 22:35:35,328 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 22:35:35,328 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 22:35:35,328 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 22:35:35,328 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 22:35:35,329 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 22:35:35,330 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-04-02 22:35:35,358 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 22:35:35,359 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 22:35:35,359 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 22:35:35,359 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 22:35:35,360 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 22:35:35,360 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 22:35:35,360 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-02 22:35:35,361 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-02 22:35:35,361 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-02 22:35:35,361 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-02 22:35:35,362 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-02 22:35:35,362 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-02 22:35:35,362 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-02 22:35:35,362 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-02 22:35:35,362 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-02 22:35:35,362 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-02 22:35:35,363 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-02 22:35:35,363 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-02 22:35:35,363 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 22:35:35,364 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 22:35:35,364 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 22:35:35,364 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 22:35:35,364 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 22:35:35,364 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 22:35:35,364 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 22:35:35,365 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 22:35:35,365 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 22:35:35,365 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 22:35:35,365 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 22:35:35,365 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 22:35:35,366 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 22:35:35,366 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 22:35:35,366 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 22:35:35,366 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 22:35:35,366 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-02 22:35:35,366 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 22:35:35,367 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 22:35:35,367 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-02 22:35:35,367 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 22:35:35,367 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 22:35:35,367 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-02 22:35:35,367 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-02 22:35:35,611 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 22:35:35,637 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 22:35:35,639 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 22:35:35,641 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 22:35:35,641 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 22:35:35,643 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound5.c [2023-04-02 22:35:36,742 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 22:35:36,918 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 22:35:36,918 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound5.c [2023-04-02 22:35:36,925 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44566a734/d61dfa3864534186a4088db520654f79/FLAG1647864f3 [2023-04-02 22:35:36,936 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44566a734/d61dfa3864534186a4088db520654f79 [2023-04-02 22:35:36,939 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 22:35:36,940 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 22:35:36,941 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 22:35:36,941 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 22:35:36,947 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 22:35:36,948 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 10:35:36" (1/1) ... [2023-04-02 22:35:36,949 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44f3306b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:35:36, skipping insertion in model container [2023-04-02 22:35:36,949 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 10:35:36" (1/1) ... [2023-04-02 22:35:36,955 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 22:35:36,969 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 22:35:37,112 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/bresenham-ll_unwindbound5.c[597,610] [2023-04-02 22:35:37,129 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 22:35:37,136 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 22:35:37,147 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/bresenham-ll_unwindbound5.c[597,610] [2023-04-02 22:35:37,173 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 22:35:37,184 INFO L208 MainTranslator]: Completed translation [2023-04-02 22:35:37,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:35:37 WrapperNode [2023-04-02 22:35:37,185 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 22:35:37,186 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 22:35:37,186 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 22:35:37,186 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 22:35:37,196 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:35:37" (1/1) ... [2023-04-02 22:35:37,196 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:35:37" (1/1) ... [2023-04-02 22:35:37,201 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:35:37" (1/1) ... [2023-04-02 22:35:37,202 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:35:37" (1/1) ... [2023-04-02 22:35:37,215 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:35:37" (1/1) ... [2023-04-02 22:35:37,219 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:35:37" (1/1) ... [2023-04-02 22:35:37,223 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:35:37" (1/1) ... [2023-04-02 22:35:37,224 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:35:37" (1/1) ... [2023-04-02 22:35:37,227 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 22:35:37,228 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 22:35:37,228 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 22:35:37,229 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 22:35:37,230 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:35:37" (1/1) ... [2023-04-02 22:35:37,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 22:35:37,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:35:37,258 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-02 22:35:37,283 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-02 22:35:37,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 22:35:37,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 22:35:37,301 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 22:35:37,301 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-02 22:35:37,301 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-04-02 22:35:37,301 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 22:35:37,301 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 22:35:37,302 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 22:35:37,302 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 22:35:37,302 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 22:35:37,302 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-02 22:35:37,302 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-02 22:35:37,302 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-04-02 22:35:37,303 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 22:35:37,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 22:35:37,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 22:35:37,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 22:35:37,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 22:35:37,303 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 22:35:37,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 22:35:37,369 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 22:35:37,370 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 22:35:37,521 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 22:35:37,591 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 22:35:37,591 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-02 22:35:37,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 10:35:37 BoogieIcfgContainer [2023-04-02 22:35:37,594 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 22:35:37,601 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 22:35:37,601 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 22:35:37,604 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 22:35:37,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 10:35:36" (1/3) ... [2023-04-02 22:35:37,605 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ee84845 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 10:35:37, skipping insertion in model container [2023-04-02 22:35:37,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:35:37" (2/3) ... [2023-04-02 22:35:37,605 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ee84845 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 10:35:37, skipping insertion in model container [2023-04-02 22:35:37,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 10:35:37" (3/3) ... [2023-04-02 22:35:37,606 INFO L112 eAbstractionObserver]: Analyzing ICFG bresenham-ll_unwindbound5.c [2023-04-02 22:35:37,620 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 22:35:37,620 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 22:35:37,669 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 22:35:37,676 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;@f668587, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-02 22:35:37,676 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 22:35:37,680 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-04-02 22:35:37,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-04-02 22:35:37,686 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 22:35:37,686 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 22:35:37,687 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 22:35:37,692 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 22:35:37,693 INFO L85 PathProgramCache]: Analyzing trace with hash 960667193, now seen corresponding path program 1 times [2023-04-02 22:35:37,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 22:35:37,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49027997] [2023-04-02 22:35:37,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:35:37,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 22:35:37,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 22:35:37,867 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 22:35:37,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49027997] [2023-04-02 22:35:37,868 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-04-02 22:35:37,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1322584422] [2023-04-02 22:35:37,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:35:37,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:35:37,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:35:37,872 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 22:35:37,874 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-02 22:35:37,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 22:35:37,961 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 1 conjunts are in the unsatisfiable core [2023-04-02 22:35:37,964 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 22:35:37,985 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 22:35:37,985 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 22:35:37,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1322584422] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 22:35:37,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 22:35:37,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-04-02 22:35:37,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621567586] [2023-04-02 22:35:37,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 22:35:37,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-04-02 22:35:37,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 22:35:38,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-04-02 22:35:38,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-02 22:35:38,020 INFO L87 Difference]: Start difference. First operand has 21 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 22:35:38,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 22:35:38,047 INFO L93 Difference]: Finished difference Result 37 states and 47 transitions. [2023-04-02 22:35:38,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-04-02 22:35:38,050 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2023-04-02 22:35:38,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 22:35:38,069 INFO L225 Difference]: With dead ends: 37 [2023-04-02 22:35:38,070 INFO L226 Difference]: Without dead ends: 17 [2023-04-02 22:35:38,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-02 22:35:38,077 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-02 22:35:38,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 20 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 22:35:38,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2023-04-02 22:35:38,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2023-04-02 22:35:38,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-02 22:35:38,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2023-04-02 22:35:38,102 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 11 [2023-04-02 22:35:38,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 22:35:38,102 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2023-04-02 22:35:38,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 22:35:38,103 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2023-04-02 22:35:38,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-04-02 22:35:38,103 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 22:35:38,103 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 22:35:38,113 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-02 22:35:38,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-04-02 22:35:38,309 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 22:35:38,309 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 22:35:38,310 INFO L85 PathProgramCache]: Analyzing trace with hash 372324734, now seen corresponding path program 1 times [2023-04-02 22:35:38,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 22:35:38,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292381025] [2023-04-02 22:35:38,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:35:38,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 22:35:38,325 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 22:35:38,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2128612560] [2023-04-02 22:35:38,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:35:38,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:35:38,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:35:38,335 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 22:35:38,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-02 22:35:38,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 22:35:38,381 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 16 conjunts are in the unsatisfiable core [2023-04-02 22:35:38,383 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 22:35:38,503 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 22:35:38,504 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 22:35:38,504 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 22:35:38,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292381025] [2023-04-02 22:35:38,504 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 22:35:38,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2128612560] [2023-04-02 22:35:38,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2128612560] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 22:35:38,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 22:35:38,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 22:35:38,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501804832] [2023-04-02 22:35:38,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 22:35:38,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 22:35:38,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 22:35:38,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 22:35:38,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 22:35:38,507 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 22:35:38,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 22:35:38,606 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2023-04-02 22:35:38,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-02 22:35:38,607 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2023-04-02 22:35:38,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 22:35:38,608 INFO L225 Difference]: With dead ends: 30 [2023-04-02 22:35:38,608 INFO L226 Difference]: Without dead ends: 25 [2023-04-02 22:35:38,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-04-02 22:35:38,611 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 10 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 22:35:38,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 47 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 22:35:38,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-04-02 22:35:38,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2023-04-02 22:35:38,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-02 22:35:38,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2023-04-02 22:35:38,626 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 11 [2023-04-02 22:35:38,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 22:35:38,626 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2023-04-02 22:35:38,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 22:35:38,627 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2023-04-02 22:35:38,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-04-02 22:35:38,627 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 22:35:38,628 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 22:35:38,635 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-02 22:35:38,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-04-02 22:35:38,828 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 22:35:38,829 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 22:35:38,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1361165766, now seen corresponding path program 1 times [2023-04-02 22:35:38,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 22:35:38,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118902018] [2023-04-02 22:35:38,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:35:38,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 22:35:38,856 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 22:35:38,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1099020880] [2023-04-02 22:35:38,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:35:38,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:35:38,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:35:38,862 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 22:35:38,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-02 22:35:38,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 22:35:38,919 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 30 conjunts are in the unsatisfiable core [2023-04-02 22:35:38,922 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 22:35:39,304 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 22:35:39,304 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 22:35:39,552 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 22:35:39,553 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 22:35:39,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118902018] [2023-04-02 22:35:39,553 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 22:35:39,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1099020880] [2023-04-02 22:35:39,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1099020880] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 22:35:39,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1954233215] [2023-04-02 22:35:39,575 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2023-04-02 22:35:39,575 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 22:35:39,579 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 22:35:39,584 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 22:35:39,584 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 22:35:39,664 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 13 for LOIs [2023-04-02 22:35:41,006 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 82 for LOIs [2023-04-02 22:35:41,094 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2023-04-02 22:35:41,100 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 22:35:42,301 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '374#(and (<= 1 |#StackHeapBarrier|) (< ~counter~0 6) (<= 1 ~counter~0) (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (= |#NULL.base| 0))' at error location [2023-04-02 22:35:42,302 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 22:35:42,302 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-02 22:35:42,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 15 [2023-04-02 22:35:42,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552082923] [2023-04-02 22:35:42,302 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-02 22:35:42,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-04-02 22:35:42,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 22:35:42,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-04-02 22:35:42,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=617, Unknown=0, NotChecked=0, Total=702 [2023-04-02 22:35:42,310 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand has 15 states, 11 states have (on average 2.090909090909091) internal successors, (23), 14 states have internal predecessors, (23), 5 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-02 22:35:42,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 22:35:42,542 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2023-04-02 22:35:42,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-02 22:35:42,542 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 11 states have (on average 2.090909090909091) internal successors, (23), 14 states have internal predecessors, (23), 5 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 19 [2023-04-02 22:35:42,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 22:35:42,543 INFO L225 Difference]: With dead ends: 39 [2023-04-02 22:35:42,543 INFO L226 Difference]: Without dead ends: 35 [2023-04-02 22:35:42,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=116, Invalid=814, Unknown=0, NotChecked=0, Total=930 [2023-04-02 22:35:42,545 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 35 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 22:35:42,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 70 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 22:35:42,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-04-02 22:35:42,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 27. [2023-04-02 22:35:42,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-02 22:35:42,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2023-04-02 22:35:42,554 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 19 [2023-04-02 22:35:42,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 22:35:42,554 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2023-04-02 22:35:42,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 11 states have (on average 2.090909090909091) internal successors, (23), 14 states have internal predecessors, (23), 5 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-02 22:35:42,555 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2023-04-02 22:35:42,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-04-02 22:35:42,555 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 22:35:42,555 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 22:35:42,562 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-04-02 22:35:42,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:35:42,761 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 22:35:42,762 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 22:35:42,762 INFO L85 PathProgramCache]: Analyzing trace with hash -828878547, now seen corresponding path program 1 times [2023-04-02 22:35:42,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 22:35:42,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930602016] [2023-04-02 22:35:42,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:35:42,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 22:35:42,771 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 22:35:42,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [620399300] [2023-04-02 22:35:42,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:35:42,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:35:42,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:35:42,773 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 22:35:42,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-04-02 22:35:42,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 22:35:42,836 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 7 conjunts are in the unsatisfiable core [2023-04-02 22:35:42,838 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 22:35:42,862 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 22:35:42,862 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 22:35:42,894 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 22:35:42,895 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 22:35:42,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930602016] [2023-04-02 22:35:42,895 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 22:35:42,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [620399300] [2023-04-02 22:35:42,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [620399300] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 22:35:42,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1300690535] [2023-04-02 22:35:42,898 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2023-04-02 22:35:42,898 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 22:35:42,898 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 22:35:42,898 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 22:35:42,899 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 22:35:42,920 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 13 for LOIs [2023-04-02 22:35:43,856 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 25 for LOIs [2023-04-02 22:35:43,874 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2023-04-02 22:35:43,878 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 22:35:44,885 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '612#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0) (or (and (<= 1 |#StackHeapBarrier|) (<= 6 ~counter~0) (<= ~counter~0 4294967296) (= |#NULL.offset| 0) (= |#NULL.base| 0)) (and (<= 1 |#StackHeapBarrier|) (<= 1 ~counter~0) (<= ~counter~0 5) (= |#NULL.offset| 0) (= |#NULL.base| 0))))' at error location [2023-04-02 22:35:44,885 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 22:35:44,885 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-02 22:35:44,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-04-02 22:35:44,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226702890] [2023-04-02 22:35:44,886 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-02 22:35:44,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 22:35:44,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 22:35:44,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 22:35:44,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2023-04-02 22:35:44,887 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand has 8 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2023-04-02 22:35:44,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 22:35:44,974 INFO L93 Difference]: Finished difference Result 63 states and 66 transitions. [2023-04-02 22:35:44,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-02 22:35:44,974 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 20 [2023-04-02 22:35:44,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 22:35:44,977 INFO L225 Difference]: With dead ends: 63 [2023-04-02 22:35:44,977 INFO L226 Difference]: Without dead ends: 57 [2023-04-02 22:35:44,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=94, Invalid=506, Unknown=0, NotChecked=0, Total=600 [2023-04-02 22:35:44,983 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 28 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-02 22:35:44,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 78 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 22:35:44,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2023-04-02 22:35:44,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 45. [2023-04-02 22:35:44,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 32 states have (on average 1.125) internal successors, (36), 32 states have internal predecessors, (36), 7 states have call successors, (7), 7 states have call predecessors, (7), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-04-02 22:35:44,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2023-04-02 22:35:44,994 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 20 [2023-04-02 22:35:44,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 22:35:44,994 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2023-04-02 22:35:44,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2023-04-02 22:35:44,994 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2023-04-02 22:35:44,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-04-02 22:35:44,995 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 22:35:44,995 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 22:35:45,002 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-04-02 22:35:45,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:35:45,201 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 22:35:45,201 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 22:35:45,201 INFO L85 PathProgramCache]: Analyzing trace with hash 34015446, now seen corresponding path program 1 times [2023-04-02 22:35:45,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 22:35:45,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262863052] [2023-04-02 22:35:45,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:35:45,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 22:35:45,213 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 22:35:45,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1864753248] [2023-04-02 22:35:45,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:35:45,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:35:45,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:35:45,215 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 22:35:45,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-04-02 22:35:45,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 22:35:45,267 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 30 conjunts are in the unsatisfiable core [2023-04-02 22:35:45,269 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 22:35:45,618 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-02 22:35:45,619 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 22:35:45,966 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-02 22:35:45,967 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 22:35:45,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262863052] [2023-04-02 22:35:45,967 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 22:35:45,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1864753248] [2023-04-02 22:35:45,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1864753248] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 22:35:45,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1845276313] [2023-04-02 22:35:45,969 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2023-04-02 22:35:45,969 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 22:35:45,970 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 22:35:45,970 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 22:35:45,970 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 22:35:45,988 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 13 for LOIs [2023-04-02 22:35:46,774 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 19 for LOIs [2023-04-02 22:35:46,780 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2023-04-02 22:35:46,784 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 22:35:47,814 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '955#(and (<= 1 |#StackHeapBarrier|) (<= 1 ~counter~0) (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0) (<= ~counter~0 5) (= |#NULL.offset| 0) (= |#NULL.base| 0))' at error location [2023-04-02 22:35:47,814 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 22:35:47,814 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-02 22:35:47,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 18 [2023-04-02 22:35:47,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43284852] [2023-04-02 22:35:47,815 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-02 22:35:47,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-04-02 22:35:47,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 22:35:47,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-04-02 22:35:47,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=881, Unknown=0, NotChecked=0, Total=992 [2023-04-02 22:35:47,817 INFO L87 Difference]: Start difference. First operand 45 states and 48 transitions. Second operand has 18 states, 14 states have (on average 2.142857142857143) internal successors, (30), 16 states have internal predecessors, (30), 6 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2023-04-02 22:35:48,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 22:35:48,118 INFO L93 Difference]: Finished difference Result 53 states and 55 transitions. [2023-04-02 22:35:48,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-02 22:35:48,120 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 14 states have (on average 2.142857142857143) internal successors, (30), 16 states have internal predecessors, (30), 6 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 26 [2023-04-02 22:35:48,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 22:35:48,121 INFO L225 Difference]: With dead ends: 53 [2023-04-02 22:35:48,121 INFO L226 Difference]: Without dead ends: 45 [2023-04-02 22:35:48,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=177, Invalid=1305, Unknown=0, NotChecked=0, Total=1482 [2023-04-02 22:35:48,123 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 32 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 22:35:48,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 56 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 22:35:48,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2023-04-02 22:35:48,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2023-04-02 22:35:48,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 32 states have (on average 1.03125) internal successors, (33), 32 states have internal predecessors, (33), 7 states have call successors, (7), 7 states have call predecessors, (7), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-04-02 22:35:48,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2023-04-02 22:35:48,135 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 26 [2023-04-02 22:35:48,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 22:35:48,135 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2023-04-02 22:35:48,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 14 states have (on average 2.142857142857143) internal successors, (30), 16 states have internal predecessors, (30), 6 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2023-04-02 22:35:48,135 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2023-04-02 22:35:48,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-04-02 22:35:48,136 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 22:35:48,137 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 22:35:48,143 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 22:35:48,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:35:48,341 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 22:35:48,341 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 22:35:48,342 INFO L85 PathProgramCache]: Analyzing trace with hash -2141253803, now seen corresponding path program 2 times [2023-04-02 22:35:48,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 22:35:48,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471836976] [2023-04-02 22:35:48,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:35:48,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 22:35:48,352 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 22:35:48,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2126432775] [2023-04-02 22:35:48,352 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-04-02 22:35:48,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:35:48,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:35:48,354 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 22:35:48,361 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-04-02 22:35:48,447 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-04-02 22:35:48,448 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 22:35:48,449 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 13 conjunts are in the unsatisfiable core [2023-04-02 22:35:48,451 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 22:35:48,536 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 8 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 22:35:48,536 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 22:35:48,611 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 8 proven. 32 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-04-02 22:35:48,611 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 22:35:48,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471836976] [2023-04-02 22:35:48,611 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 22:35:48,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2126432775] [2023-04-02 22:35:48,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2126432775] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 22:35:48,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2117090104] [2023-04-02 22:35:48,614 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2023-04-02 22:35:48,614 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 22:35:48,614 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 22:35:48,614 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 22:35:48,615 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 22:35:48,633 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 13 for LOIs [2023-04-02 22:35:49,363 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 25 for LOIs [2023-04-02 22:35:49,386 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2023-04-02 22:35:49,390 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 22:35:50,388 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1391#(and (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0) (or (and (<= 1 |#StackHeapBarrier|) (<= 6 ~counter~0) (<= ~counter~0 4294967296) (= |#NULL.offset| 0) (= |#NULL.base| 0)) (and (<= 1 |#StackHeapBarrier|) (<= 1 ~counter~0) (<= ~counter~0 5) (= |#NULL.offset| 0) (= |#NULL.base| 0))))' at error location [2023-04-02 22:35:50,388 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 22:35:50,388 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-02 22:35:50,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2023-04-02 22:35:50,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246351776] [2023-04-02 22:35:50,390 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-02 22:35:50,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 22:35:50,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 22:35:50,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 22:35:50,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=382, Unknown=0, NotChecked=0, Total=462 [2023-04-02 22:35:50,391 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 7 states have call successors, (11), 7 states have call predecessors, (11), 6 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2023-04-02 22:35:50,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 22:35:50,472 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2023-04-02 22:35:50,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-02 22:35:50,472 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 7 states have call successors, (11), 7 states have call predecessors, (11), 6 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) Word has length 44 [2023-04-02 22:35:50,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 22:35:50,473 INFO L225 Difference]: With dead ends: 59 [2023-04-02 22:35:50,473 INFO L226 Difference]: Without dead ends: 53 [2023-04-02 22:35:50,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 104 SyntacticMatches, 7 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=108, Invalid=542, Unknown=0, NotChecked=0, Total=650 [2023-04-02 22:35:50,474 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-02 22:35:50,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 50 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 22:35:50,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2023-04-02 22:35:50,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2023-04-02 22:35:50,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 38 states have (on average 1.0263157894736843) internal successors, (39), 38 states have internal predecessors, (39), 8 states have call successors, (8), 8 states have call predecessors, (8), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-04-02 22:35:50,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 53 transitions. [2023-04-02 22:35:50,485 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 53 transitions. Word has length 44 [2023-04-02 22:35:50,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 22:35:50,485 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 53 transitions. [2023-04-02 22:35:50,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 7 states have call successors, (11), 7 states have call predecessors, (11), 6 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2023-04-02 22:35:50,486 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 53 transitions. [2023-04-02 22:35:50,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-04-02 22:35:50,487 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 22:35:50,487 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 22:35:50,496 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-04-02 22:35:50,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:35:50,693 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 22:35:50,693 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 22:35:50,694 INFO L85 PathProgramCache]: Analyzing trace with hash -176278515, now seen corresponding path program 3 times [2023-04-02 22:35:50,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 22:35:50,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345641039] [2023-04-02 22:35:50,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:35:50,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 22:35:50,703 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 22:35:50,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1073655296] [2023-04-02 22:35:50,703 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-04-02 22:35:50,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:35:50,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:35:50,704 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 22:35:50,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-04-02 22:35:50,991 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-04-02 22:35:50,992 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2023-04-02 22:35:50,992 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-04-02 22:35:51,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-04-02 22:35:51,081 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-04-02 22:35:51,082 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-04-02 22:35:51,083 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-02 22:35:51,092 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 22:35:51,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:35:51,288 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1] [2023-04-02 22:35:51,291 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-04-02 22:35:51,321 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.04 10:35:51 BoogieIcfgContainer [2023-04-02 22:35:51,321 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-04-02 22:35:51,321 INFO L158 Benchmark]: Toolchain (without parser) took 14381.72ms. Allocated memory was 263.2MB in the beginning and 459.3MB in the end (delta: 196.1MB). Free memory was 208.2MB in the beginning and 360.7MB in the end (delta: -152.4MB). Peak memory consumption was 44.0MB. Max. memory is 8.0GB. [2023-04-02 22:35:51,322 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 184.5MB. Free memory is still 134.7MB. There was no memory consumed. Max. memory is 8.0GB. [2023-04-02 22:35:51,322 INFO L158 Benchmark]: CACSL2BoogieTranslator took 244.42ms. Allocated memory is still 263.2MB. Free memory was 208.2MB in the beginning and 197.7MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-04-02 22:35:51,322 INFO L158 Benchmark]: Boogie Preprocessor took 41.63ms. Allocated memory is still 263.2MB. Free memory was 197.7MB in the beginning and 196.0MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-04-02 22:35:51,322 INFO L158 Benchmark]: RCFGBuilder took 369.54ms. Allocated memory is still 263.2MB. Free memory was 196.0MB in the beginning and 182.7MB in the end (delta: 13.4MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-04-02 22:35:51,323 INFO L158 Benchmark]: TraceAbstraction took 13720.10ms. Allocated memory was 263.2MB in the beginning and 459.3MB in the end (delta: 196.1MB). Free memory was 182.0MB in the beginning and 360.7MB in the end (delta: -178.7MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2023-04-02 22:35:51,324 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 184.5MB. Free memory is still 134.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 244.42ms. Allocated memory is still 263.2MB. Free memory was 208.2MB in the beginning and 197.7MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 41.63ms. Allocated memory is still 263.2MB. Free memory was 197.7MB in the beginning and 196.0MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 369.54ms. Allocated memory is still 263.2MB. Free memory was 196.0MB in the beginning and 182.7MB in the end (delta: 13.4MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 13720.10ms. Allocated memory was 263.2MB in the beginning and 459.3MB in the end (delta: 196.1MB). Free memory was 182.0MB in the beginning and 360.7MB in the end (delta: -178.7MB). Peak memory consumption was 17.8MB. 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 - CounterExampleResult [Line: 16]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L21] int counter = 0; [L23] int X, Y; [L24] long long x, y, v, xy, yx; [L25] X = __VERIFIER_nondet_int() [L26] Y = __VERIFIER_nondet_int() [L27] v = ((long long) 2 * Y) - X [L28] y = 0 [L29] x = 0 VAL [X=2147483645, Y=2147483645, \old(counter)=0, counter=0, v=2147483645, x=0, y=0] [L31] EXPR counter++ VAL [X=2147483645, Y=2147483645, \old(counter)=0, counter++=0, counter=1, v=2147483645, x=0, y=0] [L31] COND TRUE counter++<5 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [X=2147483645, Y=2147483645, \old(counter)=0, counter=1, v=2147483645, x=0, x=0, x=0, y=0] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, \old(counter)=0, counter=1] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=1] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [X=2147483645, Y=2147483645, \old(counter)=0, counter=1, v=2147483645, x=0, x=0, x=0, y=0] [L35] COND FALSE !(!(x <= X)) [L39] COND FALSE !(v < 0) [L42] v = v + 2 * ((long long) Y - X) [L43] y++ [L45] x++ VAL [X=2147483645, Y=2147483645, \old(counter)=0, counter=1, v=2147483645, x=0, x=0, x=1, y++=0, y=1] [L31] EXPR counter++ VAL [X=2147483645, Y=2147483645, \old(counter)=0, counter++=1, counter=2, v=2147483645, x=0, x=0, x=1, y++=0, y=1] [L31] COND TRUE counter++<5 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [X=2147483645, Y=2147483645, \old(counter)=0, counter=2, v=2147483645, x=1, x=2147483645, x=2147483645, y++=0, y=1] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, \old(counter)=0, counter=2] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=2] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [X=2147483645, Y=2147483645, \old(counter)=0, counter=2, v=2147483645, x=1, x=2147483645, x=2147483645, y++=0, y=1] [L35] COND FALSE !(!(x <= X)) [L39] COND FALSE !(v < 0) [L42] v = v + 2 * ((long long) Y - X) [L43] y++ [L45] x++ VAL [X=2147483645, Y=2147483645, \old(counter)=0, counter=2, v=2147483645, x=2, x=2147483645, x=2147483645, y++=0, y=2] [L31] EXPR counter++ VAL [X=2147483645, Y=2147483645, \old(counter)=0, counter++=2, counter=3, v=2147483645, x=2, x=2147483645, x=2147483645, y++=0, y=2] [L31] COND TRUE counter++<5 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [X=2147483645, Y=2147483645, \old(counter)=0, counter=3, v=2147483645, x=2, x=4294967290, x=4294967290, y++=0, y=2] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, \old(counter)=0, counter=3] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=3] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [X=2147483645, Y=2147483645, \old(counter)=0, counter=3, v=2147483645, x=2, x=4294967290, x=4294967290, y++=0, y=2] [L35] COND FALSE !(!(x <= X)) [L39] COND FALSE !(v < 0) [L42] v = v + 2 * ((long long) Y - X) [L43] y++ [L45] x++ VAL [X=2147483645, Y=2147483645, \old(counter)=0, counter=3, v=2147483645, x=3, x=4294967290, x=4294967290, y++=0, y=3] [L31] EXPR counter++ VAL [X=2147483645, Y=2147483645, \old(counter)=0, counter++=3, counter=4, v=2147483645, x=3, x=4294967290, x=4294967290, y++=0, y=3] [L31] COND TRUE counter++<5 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [X=2147483645, Y=2147483645, \old(counter)=0, counter=4, v=2147483645, x=3, x=6442450935, x=6442450935, y++=0, y=3] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, \old(counter)=0, counter=4] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=4] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [X=2147483645, Y=2147483645, \old(counter)=0, counter=4, v=2147483645, x=3, x=6442450935, x=6442450935, y++=0, y=3] [L35] COND FALSE !(!(x <= X)) [L39] COND FALSE !(v < 0) [L42] v = v + 2 * ((long long) Y - X) [L43] y++ [L45] x++ VAL [X=2147483645, Y=2147483645, \old(counter)=0, counter=4, v=2147483645, x=4, x=6442450935, x=6442450935, y++=0, y=4] [L31] EXPR counter++ VAL [X=2147483645, Y=2147483645, \old(counter)=0, counter++=4, counter=5, v=2147483645, x=4, x=6442450935, x=6442450935, y++=0, y=4] [L31] COND TRUE counter++<5 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [X=2147483645, Y=2147483645, \old(counter)=0, counter=5, v=2147483645, x=4, x=8589934580, x=8589934580, y++=0, y=4] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, \old(counter)=0, counter=5] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=5] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [X=2147483645, Y=2147483645, \old(counter)=0, counter=5, v=2147483645, x=4, x=8589934580, x=8589934580, y++=0, y=4] [L35] COND FALSE !(!(x <= X)) [L39] COND FALSE !(v < 0) [L42] v = v + 2 * ((long long) Y - X) [L43] y++ [L45] x++ VAL [X=2147483645, Y=2147483645, \old(counter)=0, counter=5, v=2147483645, x=5, x=8589934580, x=8589934580, y++=0, y=5] [L31] EXPR counter++ VAL [X=2147483645, Y=2147483645, \old(counter)=0, counter++=5, counter=6, v=2147483645, x=5, x=8589934580, x=8589934580, y++=0, y=5] [L31] COND FALSE !(counter++<5) [L47] xy = (long long) x*y [L48] yx = (long long) Y*x VAL [X=2147483645, Y=2147483645, \old(counter)=0, counter=6, v=2147483645, x=10737418225, x=25, x=5, y++=0, y=5] [L49] CALL __VERIFIER_assert(2*yx - 2*xy - X + (long long) 2*Y - v + 2*y == 0) VAL [\old(cond)=0, \old(counter)=0, counter=6] [L14] COND TRUE !(cond) VAL [\old(cond)=0, \old(counter)=0, cond=0, counter=6] [L16] reach_error() VAL [\old(cond)=0, \old(counter)=0, cond=0, counter=6] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 13.6s, OverallIterations: 7, TraceHistogramMax: 6, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 107 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 105 mSDsluCounter, 321 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 237 mSDsCounter, 26 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 335 IncrementalHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 26 mSolverCounterUnsat, 84 mSDtfsCounter, 335 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 363 GetRequests, 235 SyntacticMatches, 9 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 852 ImplicationChecksByTransitivity, 5.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=53occurred in iteration=6, InterpolantAutomatonStates: 59, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 20 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 194 NumberOfCodeBlocks, 194 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 230 ConstructedInterpolants, 0 QuantifiedInterpolants, 1264 SizeOfPredicates, 23 NumberOfNonLiveVariables, 620 ConjunctsInSsa, 97 ConjunctsInUnsatCore, 10 InterpolantComputations, 2 PerfectInterpolantSequences, 66/170 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-04-02 22:35:51,344 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...