/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/egcd-ll_valuebound100.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 22:51:30,184 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 22:51:30,185 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 22:51:30,217 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 22:51:30,217 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 22:51:30,219 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 22:51:30,222 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 22:51:30,225 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 22:51:30,226 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 22:51:30,231 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 22:51:30,232 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 22:51:30,234 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 22:51:30,234 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 22:51:30,239 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 22:51:30,240 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 22:51:30,241 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 22:51:30,242 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 22:51:30,242 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 22:51:30,244 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 22:51:30,248 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 22:51:30,249 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 22:51:30,250 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 22:51:30,251 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 22:51:30,252 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 22:51:30,259 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-02 22:51:30,259 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-02 22:51:30,260 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-02 22:51:30,261 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-02 22:51:30,261 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-02 22:51:30,262 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-02 22:51:30,262 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 22:51:30,263 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 22:51:30,264 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 22:51:30,264 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 22:51:30,265 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 22:51:30,265 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 22:51:30,266 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 22:51:30,266 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 22:51:30,266 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 22:51:30,266 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 22:51:30,267 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 22:51:30,268 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 22:51:30,302 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 22:51:30,302 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 22:51:30,302 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 22:51:30,303 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 22:51:30,303 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 22:51:30,303 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 22:51:30,304 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-02 22:51:30,304 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-02 22:51:30,304 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-02 22:51:30,304 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-02 22:51:30,305 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-02 22:51:30,305 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-02 22:51:30,305 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-02 22:51:30,305 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-02 22:51:30,305 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-02 22:51:30,305 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-02 22:51:30,305 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-02 22:51:30,306 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-02 22:51:30,306 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 22:51:30,306 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 22:51:30,306 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 22:51:30,306 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 22:51:30,306 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 22:51:30,307 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 22:51:30,307 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 22:51:30,307 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 22:51:30,307 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 22:51:30,307 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 22:51:30,307 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 22:51:30,308 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 22:51:30,308 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 22:51:30,308 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 22:51:30,308 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 22:51:30,308 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 22:51:30,308 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-02 22:51:30,308 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 22:51:30,308 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 22:51:30,309 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-02 22:51:30,309 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 22:51:30,309 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 22:51:30,309 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-02 22:51:30,309 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-02 22:51:30,528 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 22:51:30,547 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 22:51:30,549 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 22:51:30,550 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 22:51:30,551 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 22:51:30,552 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound100.c [2023-04-02 22:51:31,618 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 22:51:31,839 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 22:51:31,840 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound100.c [2023-04-02 22:51:31,846 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9675604d/21ffa7cef4d6472f95f2f0ce97746f56/FLAGaac71c2e0 [2023-04-02 22:51:31,860 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9675604d/21ffa7cef4d6472f95f2f0ce97746f56 [2023-04-02 22:51:31,862 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 22:51:31,864 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 22:51:31,866 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 22:51:31,867 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 22:51:31,869 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 22:51:31,870 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 10:51:31" (1/1) ... [2023-04-02 22:51:31,871 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39ad5c12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:51:31, skipping insertion in model container [2023-04-02 22:51:31,872 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 10:51:31" (1/1) ... [2023-04-02 22:51:31,877 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 22:51:31,895 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 22:51:32,006 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/egcd-ll_valuebound100.c[489,502] [2023-04-02 22:51:32,022 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 22:51:32,033 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 22:51:32,042 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/egcd-ll_valuebound100.c[489,502] [2023-04-02 22:51:32,049 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 22:51:32,060 INFO L208 MainTranslator]: Completed translation [2023-04-02 22:51:32,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:51:32 WrapperNode [2023-04-02 22:51:32,060 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 22:51:32,061 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 22:51:32,062 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 22:51:32,062 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 22:51:32,072 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:51:32" (1/1) ... [2023-04-02 22:51:32,072 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:51:32" (1/1) ... [2023-04-02 22:51:32,078 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:51:32" (1/1) ... [2023-04-02 22:51:32,078 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:51:32" (1/1) ... [2023-04-02 22:51:32,084 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:51:32" (1/1) ... [2023-04-02 22:51:32,091 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:51:32" (1/1) ... [2023-04-02 22:51:32,092 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:51:32" (1/1) ... [2023-04-02 22:51:32,093 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:51:32" (1/1) ... [2023-04-02 22:51:32,094 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 22:51:32,095 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 22:51:32,095 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 22:51:32,095 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 22:51:32,096 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:51:32" (1/1) ... [2023-04-02 22:51:32,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 22:51:32,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:51:32,130 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 22:51:32,144 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 22:51:32,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 22:51:32,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 22:51:32,166 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 22:51:32,166 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-02 22:51:32,166 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-04-02 22:51:32,166 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 22:51:32,166 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 22:51:32,167 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 22:51:32,167 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 22:51:32,167 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 22:51:32,167 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-02 22:51:32,167 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-02 22:51:32,167 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-04-02 22:51:32,167 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 22:51:32,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 22:51:32,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 22:51:32,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 22:51:32,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 22:51:32,168 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 22:51:32,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 22:51:32,222 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 22:51:32,224 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 22:51:32,335 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 22:51:32,377 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 22:51:32,378 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-02 22:51:32,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 10:51:32 BoogieIcfgContainer [2023-04-02 22:51:32,380 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 22:51:32,382 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 22:51:32,382 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 22:51:32,385 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 22:51:32,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 10:51:31" (1/3) ... [2023-04-02 22:51:32,386 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f551fd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 10:51:32, skipping insertion in model container [2023-04-02 22:51:32,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 10:51:32" (2/3) ... [2023-04-02 22:51:32,386 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f551fd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 10:51:32, skipping insertion in model container [2023-04-02 22:51:32,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 10:51:32" (3/3) ... [2023-04-02 22:51:32,387 INFO L112 eAbstractionObserver]: Analyzing ICFG egcd-ll_valuebound100.c [2023-04-02 22:51:32,400 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 22:51:32,400 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 22:51:32,441 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 22:51:32,447 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;@1475e76b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-02 22:51:32,447 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 22:51:32,450 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-04-02 22:51:32,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-04-02 22:51:32,457 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 22:51:32,458 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 22:51:32,458 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 22:51:32,462 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 22:51:32,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1201008584, now seen corresponding path program 1 times [2023-04-02 22:51:32,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 22:51:32,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766160530] [2023-04-02 22:51:32,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:51:32,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 22:51:32,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 22:51:32,606 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-04-02 22:51:32,607 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 22:51:32,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766160530] [2023-04-02 22:51:32,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766160530] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 22:51:32,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 22:51:32,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-04-02 22:51:32,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623867722] [2023-04-02 22:51:32,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 22:51:32,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-04-02 22:51:32,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 22:51:32,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-04-02 22:51:32,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-02 22:51:32,653 INFO L87 Difference]: Start difference. First operand has 32 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-04-02 22:51:32,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 22:51:32,681 INFO L93 Difference]: Finished difference Result 51 states and 77 transitions. [2023-04-02 22:51:32,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-04-02 22:51:32,683 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 24 [2023-04-02 22:51:32,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 22:51:32,689 INFO L225 Difference]: With dead ends: 51 [2023-04-02 22:51:32,689 INFO L226 Difference]: Without dead ends: 28 [2023-04-02 22:51:32,691 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 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 22:51:32,694 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-02 22:51:32,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 37 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 22:51:32,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-04-02 22:51:32,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2023-04-02 22:51:32,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 12 states have internal predecessors, (13), 13 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-04-02 22:51:32,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 37 transitions. [2023-04-02 22:51:32,745 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 37 transitions. Word has length 24 [2023-04-02 22:51:32,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 22:51:32,746 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 37 transitions. [2023-04-02 22:51:32,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-04-02 22:51:32,746 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 37 transitions. [2023-04-02 22:51:32,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-04-02 22:51:32,747 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 22:51:32,747 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 22:51:32,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 22:51:32,748 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 22:51:32,748 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 22:51:32,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1269527884, now seen corresponding path program 1 times [2023-04-02 22:51:32,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 22:51:32,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768525698] [2023-04-02 22:51:32,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:51:32,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 22:51:32,796 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 22:51:32,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1215421798] [2023-04-02 22:51:32,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:51:32,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:51:32,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:51:32,805 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 22:51:32,827 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 22:51:32,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 22:51:32,888 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 17 conjunts are in the unsatisfiable core [2023-04-02 22:51:32,893 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 22:51:32,990 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-04-02 22:51:32,990 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 22:51:32,990 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 22:51:32,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768525698] [2023-04-02 22:51:32,991 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 22:51:32,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1215421798] [2023-04-02 22:51:32,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1215421798] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 22:51:32,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 22:51:32,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 22:51:32,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707321617] [2023-04-02 22:51:32,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 22:51:32,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 22:51:32,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 22:51:32,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 22:51:32,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 22:51:32,994 INFO L87 Difference]: Start difference. First operand 28 states and 37 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-04-02 22:51:33,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 22:51:33,078 INFO L93 Difference]: Finished difference Result 43 states and 58 transitions. [2023-04-02 22:51:33,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-02 22:51:33,079 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 24 [2023-04-02 22:51:33,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 22:51:33,080 INFO L225 Difference]: With dead ends: 43 [2023-04-02 22:51:33,080 INFO L226 Difference]: Without dead ends: 41 [2023-04-02 22:51:33,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-04-02 22:51:33,082 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 6 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 22:51:33,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 101 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 22:51:33,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2023-04-02 22:51:33,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2023-04-02 22:51:33,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 16 states have (on average 1.1875) internal successors, (19), 18 states have internal predecessors, (19), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2023-04-02 22:51:33,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 55 transitions. [2023-04-02 22:51:33,095 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 55 transitions. Word has length 24 [2023-04-02 22:51:33,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 22:51:33,096 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 55 transitions. [2023-04-02 22:51:33,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-04-02 22:51:33,096 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 55 transitions. [2023-04-02 22:51:33,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-04-02 22:51:33,097 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 22:51:33,097 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 22:51:33,103 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 22:51:33,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:51:33,301 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 22:51:33,301 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 22:51:33,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1521017309, now seen corresponding path program 1 times [2023-04-02 22:51:33,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 22:51:33,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906888737] [2023-04-02 22:51:33,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:51:33,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 22:51:33,330 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 22:51:33,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [469694950] [2023-04-02 22:51:33,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:51:33,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:51:33,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:51:33,338 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 22:51:33,343 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 22:51:33,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 22:51:33,471 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 17 conjunts are in the unsatisfiable core [2023-04-02 22:51:33,473 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 22:51:33,590 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-04-02 22:51:33,591 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 22:51:33,736 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 22:51:33,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906888737] [2023-04-02 22:51:33,737 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 22:51:33,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [469694950] [2023-04-02 22:51:33,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [469694950] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 22:51:33,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1068680457] [2023-04-02 22:51:33,768 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2023-04-02 22:51:33,768 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 22:51:33,771 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 22:51:33,775 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 22:51:33,776 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 22:51:33,865 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-02 22:51:34,199 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 11 for LOIs [2023-04-02 22:51:34,203 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 9 for LOIs [2023-04-02 22:51:34,205 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-02 22:51:34,211 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 22:51:34,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1068680457] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 22:51:34,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 22:51:34,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [7] total 20 [2023-04-02 22:51:34,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188876803] [2023-04-02 22:51:34,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 22:51:34,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-04-02 22:51:34,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 22:51:34,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-04-02 22:51:34,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=415, Unknown=0, NotChecked=0, Total=506 [2023-04-02 22:51:34,537 INFO L87 Difference]: Start difference. First operand 40 states and 55 transitions. Second operand has 15 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 7 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-04-02 22:51:35,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 22:51:35,533 INFO L93 Difference]: Finished difference Result 47 states and 61 transitions. [2023-04-02 22:51:35,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-02 22:51:35,533 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 7 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 29 [2023-04-02 22:51:35,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 22:51:35,534 INFO L225 Difference]: With dead ends: 47 [2023-04-02 22:51:35,534 INFO L226 Difference]: Without dead ends: 43 [2023-04-02 22:51:35,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=220, Invalid=902, Unknown=0, NotChecked=0, Total=1122 [2023-04-02 22:51:35,536 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 53 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 22:51:35,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 5 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 22:51:35,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2023-04-02 22:51:35,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2023-04-02 22:51:35,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 21 states have internal predecessors, (22), 18 states have call successors, (18), 6 states have call predecessors, (18), 5 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-04-02 22:51:35,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 55 transitions. [2023-04-02 22:51:35,551 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 55 transitions. Word has length 29 [2023-04-02 22:51:35,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 22:51:35,552 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 55 transitions. [2023-04-02 22:51:35,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 7 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-04-02 22:51:35,552 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 55 transitions. [2023-04-02 22:51:35,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-04-02 22:51:35,553 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 22:51:35,553 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 22:51:35,564 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 22:51:35,759 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,SelfDestructingSolverStorable2 [2023-04-02 22:51:35,759 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 22:51:35,760 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 22:51:35,760 INFO L85 PathProgramCache]: Analyzing trace with hash -109978194, now seen corresponding path program 1 times [2023-04-02 22:51:35,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 22:51:35,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134015601] [2023-04-02 22:51:35,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:51:35,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 22:51:35,779 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 22:51:35,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1087711888] [2023-04-02 22:51:35,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:51:35,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:51:35,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:51:35,781 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 22:51:35,789 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 22:51:35,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 22:51:35,841 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2023-04-02 22:51:35,843 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 22:51:35,859 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-04-02 22:51:35,859 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 22:51:35,859 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 22:51:35,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134015601] [2023-04-02 22:51:35,861 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 22:51:35,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1087711888] [2023-04-02 22:51:35,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1087711888] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 22:51:35,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 22:51:35,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 22:51:35,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001321483] [2023-04-02 22:51:35,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 22:51:35,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 22:51:35,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 22:51:35,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 22:51:35,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-02 22:51:35,864 INFO L87 Difference]: Start difference. First operand 43 states and 55 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-04-02 22:51:35,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 22:51:35,913 INFO L93 Difference]: Finished difference Result 49 states and 60 transitions. [2023-04-02 22:51:35,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 22:51:35,915 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 40 [2023-04-02 22:51:35,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 22:51:35,922 INFO L225 Difference]: With dead ends: 49 [2023-04-02 22:51:35,922 INFO L226 Difference]: Without dead ends: 47 [2023-04-02 22:51:35,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-02 22:51:35,926 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 5 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-02 22:51:35,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 110 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 22:51:35,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2023-04-02 22:51:35,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2023-04-02 22:51:35,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 24 states have internal predecessors, (25), 18 states have call successors, (18), 7 states have call predecessors, (18), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-04-02 22:51:35,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 58 transitions. [2023-04-02 22:51:35,949 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 58 transitions. Word has length 40 [2023-04-02 22:51:35,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 22:51:35,950 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 58 transitions. [2023-04-02 22:51:35,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-04-02 22:51:35,950 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 58 transitions. [2023-04-02 22:51:35,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-04-02 22:51:35,952 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 22:51:35,952 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 22:51:35,960 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 22:51:36,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:51:36,157 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 22:51:36,158 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 22:51:36,158 INFO L85 PathProgramCache]: Analyzing trace with hash -1626365341, now seen corresponding path program 1 times [2023-04-02 22:51:36,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 22:51:36,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531832566] [2023-04-02 22:51:36,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:51:36,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 22:51:36,181 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 22:51:36,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1666286402] [2023-04-02 22:51:36,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:51:36,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:51:36,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:51:36,184 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 22:51:36,187 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 22:51:36,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 22:51:36,234 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 25 conjunts are in the unsatisfiable core [2023-04-02 22:51:36,237 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 22:51:36,395 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-04-02 22:51:36,395 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 22:51:36,556 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-04-02 22:51:36,556 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 22:51:36,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531832566] [2023-04-02 22:51:36,556 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 22:51:36,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1666286402] [2023-04-02 22:51:36,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1666286402] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 22:51:36,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1834438797] [2023-04-02 22:51:36,559 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2023-04-02 22:51:36,559 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 22:51:36,559 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 22:51:36,559 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 22:51:36,560 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 22:51:36,580 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-02 22:51:37,766 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 9 for LOIs [2023-04-02 22:51:37,771 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 9 for LOIs [2023-04-02 22:51:37,772 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-02 22:51:37,775 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 22:51:38,248 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1191#(and (<= 1 |#StackHeapBarrier|) (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (= |#NULL.base| 0))' at error location [2023-04-02 22:51:38,248 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 22:51:38,248 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-02 22:51:38,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6] total 12 [2023-04-02 22:51:38,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875113029] [2023-04-02 22:51:38,249 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-02 22:51:38,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-02 22:51:38,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 22:51:38,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-02 22:51:38,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=509, Unknown=0, NotChecked=0, Total=600 [2023-04-02 22:51:38,250 INFO L87 Difference]: Start difference. First operand 47 states and 58 transitions. Second operand has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 4 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-04-02 22:51:38,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 22:51:38,464 INFO L93 Difference]: Finished difference Result 62 states and 79 transitions. [2023-04-02 22:51:38,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-02 22:51:38,465 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 4 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 41 [2023-04-02 22:51:38,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 22:51:38,466 INFO L225 Difference]: With dead ends: 62 [2023-04-02 22:51:38,466 INFO L226 Difference]: Without dead ends: 60 [2023-04-02 22:51:38,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 92 SyntacticMatches, 7 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=107, Invalid=595, Unknown=0, NotChecked=0, Total=702 [2023-04-02 22:51:38,468 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 19 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 22:51:38,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 121 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 22:51:38,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-04-02 22:51:38,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 51. [2023-04-02 22:51:38,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 25 states have (on average 1.12) internal successors, (28), 27 states have internal predecessors, (28), 18 states have call successors, (18), 8 states have call predecessors, (18), 7 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-04-02 22:51:38,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 61 transitions. [2023-04-02 22:51:38,486 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 61 transitions. Word has length 41 [2023-04-02 22:51:38,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 22:51:38,486 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 61 transitions. [2023-04-02 22:51:38,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 4 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-04-02 22:51:38,487 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 61 transitions. [2023-04-02 22:51:38,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-04-02 22:51:38,487 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 22:51:38,488 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 22:51:38,493 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-04-02 22:51:38,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:51:38,693 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 22:51:38,694 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 22:51:38,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1565532503, now seen corresponding path program 1 times [2023-04-02 22:51:38,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 22:51:38,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62977799] [2023-04-02 22:51:38,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:51:38,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 22:51:38,705 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 22:51:38,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [807417686] [2023-04-02 22:51:38,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:51:38,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:51:38,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:51:38,707 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 22:51:38,709 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 22:51:38,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 22:51:38,757 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 18 conjunts are in the unsatisfiable core [2023-04-02 22:51:38,759 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 22:51:38,834 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 15 proven. 5 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-04-02 22:51:38,835 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 22:51:38,934 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 15 proven. 5 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-04-02 22:51:38,934 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 22:51:38,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62977799] [2023-04-02 22:51:38,934 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 22:51:38,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [807417686] [2023-04-02 22:51:38,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [807417686] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 22:51:38,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [563355159] [2023-04-02 22:51:38,939 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2023-04-02 22:51:38,939 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 22:51:38,939 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 22:51:38,940 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 22:51:38,940 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 22:51:38,957 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-02 22:51:39,162 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 11 for LOIs [2023-04-02 22:51:39,165 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 9 for LOIs [2023-04-02 22:51:39,169 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-02 22:51:39,182 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 22:51:39,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [563355159] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 22:51:39,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-04-02 22:51:39,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [9, 8] total 26 [2023-04-02 22:51:39,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272405514] [2023-04-02 22:51:39,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 22:51:39,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-04-02 22:51:39,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 22:51:39,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-04-02 22:51:39,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=535, Unknown=0, NotChecked=0, Total=650 [2023-04-02 22:51:39,554 INFO L87 Difference]: Start difference. First operand 51 states and 61 transitions. Second operand has 16 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 8 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2023-04-02 22:51:40,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 22:51:40,558 INFO L93 Difference]: Finished difference Result 61 states and 69 transitions. [2023-04-02 22:51:40,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-02 22:51:40,558 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 8 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) Word has length 45 [2023-04-02 22:51:40,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 22:51:40,562 INFO L225 Difference]: With dead ends: 61 [2023-04-02 22:51:40,562 INFO L226 Difference]: Without dead ends: 49 [2023-04-02 22:51:40,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=270, Invalid=1136, Unknown=0, NotChecked=0, Total=1406 [2023-04-02 22:51:40,563 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 50 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 22:51:40,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 10 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 22:51:40,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2023-04-02 22:51:40,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2023-04-02 22:51:40,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 25 states have (on average 1.08) internal successors, (27), 26 states have internal predecessors, (27), 16 states have call successors, (16), 8 states have call predecessors, (16), 7 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-04-02 22:51:40,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 57 transitions. [2023-04-02 22:51:40,586 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 57 transitions. Word has length 45 [2023-04-02 22:51:40,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 22:51:40,587 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 57 transitions. [2023-04-02 22:51:40,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 8 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2023-04-02 22:51:40,587 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 57 transitions. [2023-04-02 22:51:40,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-04-02 22:51:40,588 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 22:51:40,588 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 22:51:40,593 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-04-02 22:51:40,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:51:40,789 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 22:51:40,789 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 22:51:40,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1584235564, now seen corresponding path program 2 times [2023-04-02 22:51:40,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 22:51:40,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863658864] [2023-04-02 22:51:40,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:51:40,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 22:51:40,799 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 22:51:40,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [497791877] [2023-04-02 22:51:40,800 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-04-02 22:51:40,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:51:40,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:51:40,803 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 22:51:40,804 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 22:51:40,848 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-04-02 22:51:40,848 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 22:51:40,849 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 26 conjunts are in the unsatisfiable core [2023-04-02 22:51:40,851 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 22:51:41,120 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-04-02 22:51:41,120 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 22:51:41,292 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-04-02 22:51:41,292 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 22:51:41,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863658864] [2023-04-02 22:51:41,293 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 22:51:41,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [497791877] [2023-04-02 22:51:41,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [497791877] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 22:51:41,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1608536854] [2023-04-02 22:51:41,295 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2023-04-02 22:51:41,296 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 22:51:41,296 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 22:51:41,296 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 22:51:41,296 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 22:51:41,315 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-02 22:51:42,268 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 9 for LOIs [2023-04-02 22:51:42,271 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 9 for LOIs [2023-04-02 22:51:42,272 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-02 22:51:42,275 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 22:51:43,048 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2153#(and (<= 1 |#StackHeapBarrier|) (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (= |#NULL.base| 0))' at error location [2023-04-02 22:51:43,049 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 22:51:43,049 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-02 22:51:43,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 12 [2023-04-02 22:51:43,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114485894] [2023-04-02 22:51:43,049 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-02 22:51:43,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-02 22:51:43,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 22:51:43,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-02 22:51:43,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=514, Unknown=0, NotChecked=0, Total=600 [2023-04-02 22:51:43,051 INFO L87 Difference]: Start difference. First operand 49 states and 57 transitions. Second operand has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 9 states have internal predecessors, (21), 5 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) [2023-04-02 22:51:43,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 22:51:43,998 INFO L93 Difference]: Finished difference Result 73 states and 94 transitions. [2023-04-02 22:51:43,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-02 22:51:43,998 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 9 states have internal predecessors, (21), 5 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) Word has length 46 [2023-04-02 22:51:43,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 22:51:43,999 INFO L225 Difference]: With dead ends: 73 [2023-04-02 22:51:43,999 INFO L226 Difference]: Without dead ends: 71 [2023-04-02 22:51:44,000 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 106 SyntacticMatches, 8 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=113, Invalid=699, Unknown=0, NotChecked=0, Total=812 [2023-04-02 22:51:44,000 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 21 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 22:51:44,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 123 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 22:51:44,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2023-04-02 22:51:44,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 61. [2023-04-02 22:51:44,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 31 states have (on average 1.096774193548387) internal successors, (34), 33 states have internal predecessors, (34), 21 states have call successors, (21), 9 states have call predecessors, (21), 8 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2023-04-02 22:51:44,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 74 transitions. [2023-04-02 22:51:44,021 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 74 transitions. Word has length 46 [2023-04-02 22:51:44,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 22:51:44,021 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 74 transitions. [2023-04-02 22:51:44,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 9 states have internal predecessors, (21), 5 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) [2023-04-02 22:51:44,022 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 74 transitions. [2023-04-02 22:51:44,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-04-02 22:51:44,022 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 22:51:44,022 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 22:51:44,029 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 22:51:44,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:51:44,230 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 22:51:44,230 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 22:51:44,230 INFO L85 PathProgramCache]: Analyzing trace with hash -320866109, now seen corresponding path program 3 times [2023-04-02 22:51:44,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 22:51:44,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510393297] [2023-04-02 22:51:44,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:51:44,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 22:51:44,242 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 22:51:44,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1277791276] [2023-04-02 22:51:44,242 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-04-02 22:51:44,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:51:44,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:51:44,244 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 22:51:44,247 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 22:51:44,286 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-04-02 22:51:44,286 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 22:51:44,287 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 39 conjunts are in the unsatisfiable core [2023-04-02 22:51:44,289 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 22:51:44,648 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 21 proven. 14 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-04-02 22:51:44,649 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 22:51:44,935 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 27 proven. 5 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-04-02 22:51:44,936 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 22:51:44,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510393297] [2023-04-02 22:51:44,936 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 22:51:44,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1277791276] [2023-04-02 22:51:44,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1277791276] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 22:51:44,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1538764658] [2023-04-02 22:51:44,938 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2023-04-02 22:51:44,938 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 22:51:44,939 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 22:51:44,939 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 22:51:44,939 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 22:51:44,950 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-02 22:51:45,734 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 9 for LOIs [2023-04-02 22:51:45,738 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 9 for LOIs [2023-04-02 22:51:45,739 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-02 22:51:45,742 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 22:51:46,557 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2704#(and (<= 1 |#StackHeapBarrier|) (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (= |#NULL.base| 0))' at error location [2023-04-02 22:51:46,557 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 22:51:46,557 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-02 22:51:46,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 16 [2023-04-02 22:51:46,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934489254] [2023-04-02 22:51:46,557 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-02 22:51:46,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-04-02 22:51:46,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 22:51:46,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-04-02 22:51:46,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=698, Unknown=0, NotChecked=0, Total=812 [2023-04-02 22:51:46,559 INFO L87 Difference]: Start difference. First operand 61 states and 74 transitions. Second operand has 16 states, 13 states have (on average 2.0) internal successors, (26), 11 states have internal predecessors, (26), 7 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 8 states have call predecessors, (17), 5 states have call successors, (17) [2023-04-02 22:51:48,975 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-04-02 22:51:49,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 22:51:49,045 INFO L93 Difference]: Finished difference Result 79 states and 92 transitions. [2023-04-02 22:51:49,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-02 22:51:49,046 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 2.0) internal successors, (26), 11 states have internal predecessors, (26), 7 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 8 states have call predecessors, (17), 5 states have call successors, (17) Word has length 51 [2023-04-02 22:51:49,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 22:51:49,048 INFO L225 Difference]: With dead ends: 79 [2023-04-02 22:51:49,048 INFO L226 Difference]: Without dead ends: 73 [2023-04-02 22:51:49,048 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 118 SyntacticMatches, 9 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 367 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=147, Invalid=909, Unknown=0, NotChecked=0, Total=1056 [2023-04-02 22:51:49,049 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 26 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 51 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-04-02 22:51:49,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 108 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 293 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2023-04-02 22:51:49,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2023-04-02 22:51:49,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 71. [2023-04-02 22:51:49,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 40 states have (on average 1.075) internal successors, (43), 42 states have internal predecessors, (43), 19 states have call successors, (19), 12 states have call predecessors, (19), 11 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2023-04-02 22:51:49,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 79 transitions. [2023-04-02 22:51:49,069 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 79 transitions. Word has length 51 [2023-04-02 22:51:49,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 22:51:49,069 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 79 transitions. [2023-04-02 22:51:49,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 2.0) internal successors, (26), 11 states have internal predecessors, (26), 7 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 8 states have call predecessors, (17), 5 states have call successors, (17) [2023-04-02 22:51:49,070 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 79 transitions. [2023-04-02 22:51:49,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-04-02 22:51:49,071 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 22:51:49,071 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 22:51:49,078 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 22:51:49,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:51:49,276 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 22:51:49,277 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 22:51:49,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1141095002, now seen corresponding path program 1 times [2023-04-02 22:51:49,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 22:51:49,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605070934] [2023-04-02 22:51:49,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:51:49,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 22:51:49,299 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 22:51:49,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1896192382] [2023-04-02 22:51:49,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:51:49,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:51:49,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:51:49,301 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 22:51:49,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-04-02 22:51:49,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 22:51:49,354 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 18 conjunts are in the unsatisfiable core [2023-04-02 22:51:49,357 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 22:51:49,415 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 41 proven. 5 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2023-04-02 22:51:49,415 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 22:51:49,524 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 41 proven. 5 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2023-04-02 22:51:49,524 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 22:51:49,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605070934] [2023-04-02 22:51:49,524 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 22:51:49,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1896192382] [2023-04-02 22:51:49,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1896192382] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 22:51:49,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2045927563] [2023-04-02 22:51:49,529 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2023-04-02 22:51:49,530 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 22:51:49,530 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 22:51:49,530 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 22:51:49,530 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 22:51:49,542 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-02 22:51:50,328 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 9 for LOIs [2023-04-02 22:51:50,332 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 9 for LOIs [2023-04-02 22:51:50,333 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-02 22:51:50,335 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 22:51:51,274 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3334#(and (<= 1 |#StackHeapBarrier|) (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (= |#NULL.base| 0))' at error location [2023-04-02 22:51:51,274 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 22:51:51,275 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-02 22:51:51,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 12 [2023-04-02 22:51:51,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476507251] [2023-04-02 22:51:51,275 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-02 22:51:51,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-02 22:51:51,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 22:51:51,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-02 22:51:51,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=548, Unknown=0, NotChecked=0, Total=650 [2023-04-02 22:51:51,276 INFO L87 Difference]: Start difference. First operand 71 states and 79 transitions. Second operand has 12 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 5 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2023-04-02 22:51:51,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 22:51:51,521 INFO L93 Difference]: Finished difference Result 81 states and 87 transitions. [2023-04-02 22:51:51,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-02 22:51:51,521 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 5 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) Word has length 62 [2023-04-02 22:51:51,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 22:51:51,522 INFO L225 Difference]: With dead ends: 81 [2023-04-02 22:51:51,522 INFO L226 Difference]: Without dead ends: 69 [2023-04-02 22:51:51,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 151 SyntacticMatches, 10 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=118, Invalid=638, Unknown=0, NotChecked=0, Total=756 [2023-04-02 22:51:51,523 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 15 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 22:51:51,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 110 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 22:51:51,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2023-04-02 22:51:51,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2023-04-02 22:51:51,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 40 states have (on average 1.025) internal successors, (41), 41 states have internal predecessors, (41), 17 states have call successors, (17), 12 states have call predecessors, (17), 11 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2023-04-02 22:51:51,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 74 transitions. [2023-04-02 22:51:51,540 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 74 transitions. Word has length 62 [2023-04-02 22:51:51,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 22:51:51,541 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 74 transitions. [2023-04-02 22:51:51,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 5 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2023-04-02 22:51:51,541 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 74 transitions. [2023-04-02 22:51:51,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-04-02 22:51:51,542 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 22:51:51,542 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 22:51:51,547 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-04-02 22:51:51,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-04-02 22:51:51,745 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 22:51:51,745 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 22:51:51,746 INFO L85 PathProgramCache]: Analyzing trace with hash 834324404, now seen corresponding path program 4 times [2023-04-02 22:51:51,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 22:51:51,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794410191] [2023-04-02 22:51:51,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 22:51:51,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 22:51:51,755 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-02 22:51:51,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2042973104] [2023-04-02 22:51:51,756 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-04-02 22:51:51,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 22:51:51,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 22:51:51,757 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 22:51:51,780 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-04-02 22:51:51,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 22:51:51,838 INFO L262 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 41 conjunts are in the unsatisfiable core [2023-04-02 22:51:51,841 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 22:51:53,996 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 62 proven. 45 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2023-04-02 22:51:53,996 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 22:51:57,674 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 73 proven. 34 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2023-04-02 22:51:57,675 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 22:51:57,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794410191] [2023-04-02 22:51:57,675 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-02 22:51:57,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2042973104] [2023-04-02 22:51:57,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2042973104] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 22:51:57,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1894900576] [2023-04-02 22:51:57,680 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2023-04-02 22:51:57,681 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 22:51:57,682 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 22:51:57,682 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 22:51:57,682 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 22:51:57,693 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-02 22:51:58,493 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 9 for LOIs [2023-04-02 22:51:58,496 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 9 for LOIs [2023-04-02 22:51:58,497 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-02 22:51:58,500 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 22:52:18,293 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4068#(and (<= 1 |#StackHeapBarrier|) (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (= |#NULL.base| 0))' at error location [2023-04-02 22:52:18,294 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 22:52:18,294 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-02 22:52:18,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2023-04-02 22:52:18,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632787669] [2023-04-02 22:52:18,294 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-02 22:52:18,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-04-02 22:52:18,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 22:52:18,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-04-02 22:52:18,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=865, Unknown=0, NotChecked=0, Total=992 [2023-04-02 22:52:18,296 INFO L87 Difference]: Start difference. First operand 69 states and 74 transitions. Second operand has 19 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 14 states have internal predecessors, (33), 11 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (25), 10 states have call predecessors, (25), 9 states have call successors, (25) [2023-04-02 22:52:27,029 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-04-02 22:52:27,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 22:52:27,302 INFO L93 Difference]: Finished difference Result 86 states and 94 transitions. [2023-04-02 22:52:27,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-02 22:52:27,302 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 14 states have internal predecessors, (33), 11 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (25), 10 states have call predecessors, (25), 9 states have call successors, (25) Word has length 80 [2023-04-02 22:52:27,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 22:52:27,303 INFO L225 Difference]: With dead ends: 86 [2023-04-02 22:52:27,303 INFO L226 Difference]: Without dead ends: 0 [2023-04-02 22:52:27,304 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 192 SyntacticMatches, 20 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 561 ImplicationChecksByTransitivity, 25.8s TimeCoverageRelationStatistics Valid=189, Invalid=1217, Unknown=0, NotChecked=0, Total=1406 [2023-04-02 22:52:27,305 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 15 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 26 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-04-02 22:52:27,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 202 Invalid, 452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 425 Invalid, 1 Unknown, 0 Unchecked, 4.4s Time] [2023-04-02 22:52:27,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-04-02 22:52:27,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-04-02 22:52:27,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-04-02 22:52:27,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-04-02 22:52:27,306 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 80 [2023-04-02 22:52:27,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 22:52:27,306 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-04-02 22:52:27,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 14 states have internal predecessors, (33), 11 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (25), 10 states have call predecessors, (25), 9 states have call successors, (25) [2023-04-02 22:52:27,306 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-04-02 22:52:27,306 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-04-02 22:52:27,308 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-02 22:52:27,315 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-04-02 22:52:27,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-04-02 22:52:27,510 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-04-02 22:52:48,120 WARN L223 SmtUtils]: Spent 18.65s on a formula simplification. DAG size of input: 107 DAG size of output: 76 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2023-04-02 22:52:55,502 WARN L223 SmtUtils]: Spent 6.74s on a formula simplification. DAG size of input: 199 DAG size of output: 73 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2023-04-02 22:53:03,681 WARN L223 SmtUtils]: Spent 8.18s on a formula simplification. DAG size of input: 107 DAG size of output: 76 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2023-04-02 22:53:12,729 WARN L223 SmtUtils]: Spent 7.68s on a formula simplification. DAG size of input: 201 DAG size of output: 73 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2023-04-02 22:53:23,616 WARN L223 SmtUtils]: Spent 10.88s on a formula simplification. DAG size of input: 201 DAG size of output: 73 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2023-04-02 22:53:23,619 INFO L899 garLoopResultBuilder]: For program point reach_errorEXIT(line 4) no Hoare annotation was computed. [2023-04-02 22:53:23,620 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line 4) no Hoare annotation was computed. [2023-04-02 22:53:23,620 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 7 9) the Hoare annotation is: true [2023-04-02 22:53:23,620 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 7 9) no Hoare annotation was computed. [2023-04-02 22:53:23,620 INFO L895 garLoopResultBuilder]: At program point L35-2(lines 35 52) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (or (not (= (select .cse0 0) 48)) (and (= main_~b~0 main_~a~0) (= main_~b~0 (+ (* main_~q~0 main_~x~0) (* main_~y~0 main_~s~0))) (<= 1 main_~x~0) (= main_~a~0 (+ (* main_~y~0 main_~r~0) (* main_~p~0 main_~x~0))) (<= main_~y~0 100) (<= main_~x~0 100) (<= 1 main_~y~0) (= (* main_~p~0 main_~s~0) (+ (* main_~q~0 main_~r~0) 1))) (not (= |#NULL.offset| 0)) (not (= 2 (select |#length| 1))) (not (= (select |#valid| 3) 1)) (not (= (select |#length| 3) 12)) (not (= (select |#valid| 0) 0)) (not (= (select .cse0 1) 0)) (not (= (select |#valid| 1) 1)) (not (= |#NULL.base| 0)) (not (= 10 (select |#length| 2))) (not (= (select |#valid| 2) 1)) (<= |#StackHeapBarrier| 0))) [2023-04-02 22:53:23,620 INFO L895 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (or (not (= (select .cse0 0) 48)) (not (= |#NULL.offset| 0)) (and (<= 0 main_~y~0) (<= 1 main_~x~0) (<= main_~y~0 100) (<= main_~x~0 100)) (not (= 2 (select |#length| 1))) (not (= (select |#valid| 3) 1)) (not (= (select |#length| 3) 12)) (not (= (select |#valid| 0) 0)) (not (= (select .cse0 1) 0)) (not (= (select |#valid| 1) 1)) (not (= |#NULL.base| 0)) (not (= 10 (select |#length| 2))) (not (= (select |#valid| 2) 1)) (<= |#StackHeapBarrier| 0))) [2023-04-02 22:53:23,620 INFO L899 garLoopResultBuilder]: For program point mainEXIT(lines 18 59) no Hoare annotation was computed. [2023-04-02 22:53:23,620 INFO L895 garLoopResultBuilder]: At program point L56(line 56) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1)) (.cse1 (<= 1 main_~x~0)) (.cse2 (<= main_~y~0 100)) (.cse3 (<= main_~x~0 100)) (.cse4 (<= 1 main_~y~0))) (or (not (= (select .cse0 0) 48)) (not (= |#NULL.offset| 0)) (not (= 2 (select |#length| 1))) (not (= (select |#valid| 3) 1)) (and (= main_~b~0 main_~a~0) (= main_~b~0 (+ (* main_~q~0 main_~x~0) (* main_~y~0 main_~s~0))) .cse1 .cse2 .cse3 .cse4 (= (* main_~p~0 main_~s~0) (+ (* main_~q~0 main_~r~0) 1))) (not (= (select |#length| 3) 12)) (not (= (select |#valid| 0) 0)) (not (= (select .cse0 1) 0)) (not (= (select |#valid| 1) 1)) (not (= |#NULL.base| 0)) (not (= 10 (select |#length| 2))) (not (= (select |#valid| 2) 1)) (<= |#StackHeapBarrier| 0) (and (= main_~r~0 0) .cse1 (= main_~s~0 1) (= main_~b~0 main_~y~0) .cse2 (= main_~q~0 0) .cse3 .cse4 (= main_~a~0 main_~x~0) (= main_~p~0 1)))) [2023-04-02 22:53:23,621 INFO L895 garLoopResultBuilder]: At program point L54(line 54) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (or (not (= (select .cse0 0) 48)) (and (= main_~b~0 main_~a~0) (= main_~b~0 (+ (* main_~q~0 main_~x~0) (* main_~y~0 main_~s~0))) (<= 1 main_~x~0) (= main_~a~0 (+ (* main_~y~0 main_~r~0) (* main_~p~0 main_~x~0))) (<= main_~y~0 100) (<= main_~x~0 100) (<= 1 main_~y~0) (= (* main_~p~0 main_~s~0) (+ (* main_~q~0 main_~r~0) 1))) (not (= |#NULL.offset| 0)) (not (= 2 (select |#length| 1))) (not (= (select |#valid| 3) 1)) (not (= (select |#length| 3) 12)) (not (= (select |#valid| 0) 0)) (not (= (select .cse0 1) 0)) (not (= (select |#valid| 1) 1)) (not (= |#NULL.base| 0)) (not (= 10 (select |#length| 2))) (not (= (select |#valid| 2) 1)) (<= |#StackHeapBarrier| 0))) [2023-04-02 22:53:23,621 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 18 59) the Hoare annotation is: true [2023-04-02 22:53:23,621 INFO L899 garLoopResultBuilder]: For program point L38(lines 35 52) no Hoare annotation was computed. [2023-04-02 22:53:23,621 INFO L895 garLoopResultBuilder]: At program point L36(line 36) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (or (not (= (select .cse0 0) 48)) (not (= |#NULL.offset| 0)) (not (= 2 (select |#length| 1))) (not (= (select |#valid| 3) 1)) (not (= (select |#length| 3) 12)) (not (= (select |#valid| 0) 0)) (not (= (select .cse0 1) 0)) (and (= main_~b~0 (+ (* main_~q~0 main_~x~0) (* main_~y~0 main_~s~0))) (<= 1 main_~x~0) (= main_~a~0 (+ (* main_~y~0 main_~r~0) (* main_~p~0 main_~x~0))) (<= main_~y~0 100) (<= main_~x~0 100) (<= 1 main_~y~0) (= (* main_~p~0 main_~s~0) (+ (* main_~q~0 main_~r~0) 1))) (not (= (select |#valid| 1) 1)) (not (= |#NULL.base| 0)) (not (= 10 (select |#length| 2))) (not (= (select |#valid| 2) 1)) (<= |#StackHeapBarrier| 0))) [2023-04-02 22:53:23,621 INFO L895 garLoopResultBuilder]: At program point L36-1(line 36) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (or (not (= (select .cse0 0) 48)) (not (= |#NULL.offset| 0)) (not (= 2 (select |#length| 1))) (not (= (select |#valid| 3) 1)) (not (= (select |#length| 3) 12)) (not (= (select |#valid| 0) 0)) (not (= (select .cse0 1) 0)) (and (= main_~b~0 (+ (* main_~q~0 main_~x~0) (* main_~y~0 main_~s~0))) (<= 1 main_~x~0) (= main_~a~0 (+ (* main_~y~0 main_~r~0) (* main_~p~0 main_~x~0))) (<= main_~y~0 100) (<= main_~x~0 100) (<= 1 main_~y~0) (= (* main_~p~0 main_~s~0) (+ (* main_~q~0 main_~r~0) 1))) (not (= (select |#valid| 1) 1)) (not (= |#NULL.base| 0)) (not (= 10 (select |#length| 2))) (not (= (select |#valid| 2) 1)) (<= |#StackHeapBarrier| 0))) [2023-04-02 22:53:23,621 INFO L899 garLoopResultBuilder]: For program point L26(line 26) no Hoare annotation was computed. [2023-04-02 22:53:23,622 INFO L899 garLoopResultBuilder]: For program point L57(line 57) no Hoare annotation was computed. [2023-04-02 22:53:23,622 INFO L895 garLoopResultBuilder]: At program point L24(line 24) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (or (not (= (select .cse0 0) 48)) (and (<= main_~y~0 2147483647) (<= 0 main_~x~0) (<= 0 (+ main_~y~0 2147483648)) (<= main_~x~0 100)) (not (= |#NULL.offset| 0)) (not (= 2 (select |#length| 1))) (not (= (select |#valid| 3) 1)) (not (= (select |#length| 3) 12)) (not (= (select |#valid| 0) 0)) (not (= (select .cse0 1) 0)) (not (= (select |#valid| 1) 1)) (not (= |#NULL.base| 0)) (not (= 10 (select |#length| 2))) (not (= (select |#valid| 2) 1)) (<= |#StackHeapBarrier| 0))) [2023-04-02 22:53:23,622 INFO L895 garLoopResultBuilder]: At program point L24-1(line 24) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (or (not (= (select .cse0 0) 48)) (not (= |#NULL.offset| 0)) (not (= 2 (select |#length| 1))) (and (<= 0 main_~y~0) (<= 0 main_~x~0) (<= main_~y~0 100) (<= main_~x~0 100)) (not (= (select |#valid| 3) 1)) (not (= (select |#length| 3) 12)) (not (= (select |#valid| 0) 0)) (not (= (select .cse0 1) 0)) (not (= (select |#valid| 1) 1)) (not (= |#NULL.base| 0)) (not (= 10 (select |#length| 2))) (not (= (select |#valid| 2) 1)) (<= |#StackHeapBarrier| 0))) [2023-04-02 22:53:23,622 INFO L895 garLoopResultBuilder]: At program point L55(line 55) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1)) (.cse1 (<= 1 main_~x~0)) (.cse2 (<= main_~y~0 100)) (.cse3 (<= main_~x~0 100)) (.cse4 (<= 1 main_~y~0))) (or (not (= (select .cse0 0) 48)) (not (= |#NULL.offset| 0)) (not (= 2 (select |#length| 1))) (not (= (select |#valid| 3) 1)) (and (= main_~b~0 main_~a~0) (= main_~b~0 (+ (* main_~q~0 main_~x~0) (* main_~y~0 main_~s~0))) .cse1 .cse2 .cse3 .cse4 (= (* main_~p~0 main_~s~0) (+ (* main_~q~0 main_~r~0) 1))) (not (= (select |#length| 3) 12)) (not (= (select |#valid| 0) 0)) (not (= (select .cse0 1) 0)) (not (= (select |#valid| 1) 1)) (not (= |#NULL.base| 0)) (not (= 10 (select |#length| 2))) (not (= (select |#valid| 2) 1)) (<= |#StackHeapBarrier| 0) (and (= main_~r~0 0) .cse1 (= main_~s~0 1) (= main_~b~0 main_~y~0) .cse2 (= main_~q~0 0) .cse3 .cse4 (= main_~a~0 main_~x~0) (= main_~p~0 1)))) [2023-04-02 22:53:23,622 INFO L895 garLoopResultBuilder]: At program point L22(line 22) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (or (not (= (select .cse0 0) 48)) (not (= |#NULL.offset| 0)) (not (= 2 (select |#length| 1))) (and (<= main_~x~0 2147483647) (<= 0 (+ main_~x~0 2147483648))) (not (= (select |#valid| 3) 1)) (not (= (select |#length| 3) 12)) (not (= (select |#valid| 0) 0)) (not (= (select .cse0 1) 0)) (not (= (select |#valid| 1) 1)) (not (= |#NULL.base| 0)) (not (= 10 (select |#length| 2))) (not (= (select |#valid| 2) 1)) (<= |#StackHeapBarrier| 0))) [2023-04-02 22:53:23,622 INFO L899 garLoopResultBuilder]: For program point L22-1(line 22) no Hoare annotation was computed. [2023-04-02 22:53:23,622 INFO L895 garLoopResultBuilder]: At program point L43-2(lines 35 52) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (or (not (= (select .cse0 0) 48)) (not (= |#NULL.offset| 0)) (not (= 2 (select |#length| 1))) (not (= (select |#valid| 3) 1)) (not (= (select |#length| 3) 12)) (not (= (select |#valid| 0) 0)) (not (= (select .cse0 1) 0)) (and (= main_~b~0 (+ (* main_~q~0 main_~x~0) (* main_~y~0 main_~s~0))) (<= 1 main_~x~0) (= main_~a~0 (+ (* main_~y~0 main_~r~0) (* main_~p~0 main_~x~0))) (<= main_~y~0 100) (<= main_~x~0 100) (<= 1 main_~y~0) (= (* main_~p~0 main_~s~0) (+ (* main_~q~0 main_~r~0) 1))) (not (= (select |#valid| 1) 1)) (not (= |#NULL.base| 0)) (not (= 10 (select |#length| 2))) (not (= (select |#valid| 2) 1)) (<= |#StackHeapBarrier| 0))) [2023-04-02 22:53:23,623 INFO L895 garLoopResultBuilder]: At program point L37(line 37) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (or (not (= (select .cse0 0) 48)) (not (= |#NULL.offset| 0)) (not (= 2 (select |#length| 1))) (not (= (select |#valid| 3) 1)) (not (= (select |#length| 3) 12)) (not (= (select |#valid| 0) 0)) (not (= (select .cse0 1) 0)) (and (= main_~b~0 (+ (* main_~q~0 main_~x~0) (* main_~y~0 main_~s~0))) (<= 1 main_~x~0) (= main_~a~0 (+ (* main_~y~0 main_~r~0) (* main_~p~0 main_~x~0))) (<= main_~y~0 100) (<= main_~x~0 100) (<= 1 main_~y~0) (= (* main_~p~0 main_~s~0) (+ (* main_~q~0 main_~r~0) 1))) (not (= (select |#valid| 1) 1)) (not (= |#NULL.base| 0)) (not (= 10 (select |#length| 2))) (not (= (select |#valid| 2) 1)) (<= |#StackHeapBarrier| 0))) [2023-04-02 22:53:23,623 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: (and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2023-04-02 22:53:23,623 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2023-04-02 22:53:23,623 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-04-02 22:53:23,623 INFO L895 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse0 0) 48) (= 10 (select |#length| 2)) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2023-04-02 22:53:23,623 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-04-02 22:53:23,623 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-04-02 22:53:23,623 INFO L899 garLoopResultBuilder]: For program point L12(lines 12 13) no Hoare annotation was computed. [2023-04-02 22:53:23,623 INFO L899 garLoopResultBuilder]: For program point L11(lines 11 14) no Hoare annotation was computed. [2023-04-02 22:53:23,623 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 10 16) no Hoare annotation was computed. [2023-04-02 22:53:23,623 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 10 16) the Hoare annotation is: true [2023-04-02 22:53:23,624 INFO L899 garLoopResultBuilder]: For program point L11-2(lines 10 16) no Hoare annotation was computed. [2023-04-02 22:53:23,624 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2023-04-02 22:53:23,626 INFO L445 BasicCegarLoop]: Path program histogram: [4, 1, 1, 1, 1, 1, 1] [2023-04-02 22:53:23,628 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-04-02 22:53:23,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.04 10:53:23 BoogieIcfgContainer [2023-04-02 22:53:23,641 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-04-02 22:53:23,642 INFO L158 Benchmark]: Toolchain (without parser) took 111778.28ms. Allocated memory was 202.4MB in the beginning and 413.1MB in the end (delta: 210.8MB). Free memory was 170.6MB in the beginning and 322.8MB in the end (delta: -152.2MB). Peak memory consumption was 247.1MB. Max. memory is 8.0GB. [2023-04-02 22:53:23,642 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 202.4MB. Free memory is still 154.6MB. There was no memory consumed. Max. memory is 8.0GB. [2023-04-02 22:53:23,642 INFO L158 Benchmark]: CACSL2BoogieTranslator took 194.14ms. Allocated memory is still 202.4MB. Free memory was 170.6MB in the beginning and 160.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-04-02 22:53:23,643 INFO L158 Benchmark]: Boogie Preprocessor took 32.91ms. Allocated memory is still 202.4MB. Free memory was 160.1MB in the beginning and 158.7MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-04-02 22:53:23,643 INFO L158 Benchmark]: RCFGBuilder took 285.21ms. Allocated memory is still 202.4MB. Free memory was 158.5MB in the beginning and 144.4MB in the end (delta: 14.1MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2023-04-02 22:53:23,643 INFO L158 Benchmark]: TraceAbstraction took 111259.69ms. Allocated memory was 202.4MB in the beginning and 413.1MB in the end (delta: 210.8MB). Free memory was 144.0MB in the beginning and 322.8MB in the end (delta: -178.8MB). Peak memory consumption was 220.9MB. Max. memory is 8.0GB. [2023-04-02 22:53:23,644 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 202.4MB. Free memory is still 154.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 194.14ms. Allocated memory is still 202.4MB. Free memory was 170.6MB in the beginning and 160.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 32.91ms. Allocated memory is still 202.4MB. Free memory was 160.1MB in the beginning and 158.7MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 285.21ms. Allocated memory is still 202.4MB. Free memory was 158.5MB in the beginning and 144.4MB in the end (delta: 14.1MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * TraceAbstraction took 111259.69ms. Allocated memory was 202.4MB in the beginning and 413.1MB in the end (delta: 210.8MB). Free memory was 144.0MB in the beginning and 322.8MB in the end (delta: -178.8MB). Peak memory consumption was 220.9MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 34 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 111.2s, OverallIterations: 10, TraceHistogramMax: 11, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 15.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 56.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2 mSolverCounterUnknown, 242 SdHoareTripleChecker+Valid, 8.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 210 mSDsluCounter, 927 SdHoareTripleChecker+Invalid, 7.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 689 mSDsCounter, 326 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1783 IncrementalHoareTripleChecker+Invalid, 2111 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 326 mSolverCounterUnsat, 238 mSDtfsCounter, 1783 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1143 GetRequests, 867 SyntacticMatches, 54 SemanticMatches, 222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2021 ImplicationChecksByTransitivity, 32.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=71occurred in iteration=8, InterpolantAutomatonStates: 98, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 22 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 18 LocationsWithAnnotation, 53 PreInvPairs, 85 NumberOfFragments, 1336 HoareAnnotationTreeSize, 53 FomulaSimplifications, 8205 FormulaSimplificationTreeSizeReduction, 0.9s HoareSimplificationTime, 18 FomulaSimplificationsInter, 9246 FormulaSimplificationTreeSizeReductionInter, 55.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 8.0s InterpolantComputationTime, 442 NumberOfCodeBlocks, 420 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 751 ConstructedInterpolants, 0 QuantifiedInterpolants, 5234 SizeOfPredicates, 45 NumberOfNonLiveVariables, 1183 ConjunctsInSsa, 209 ConjunctsInUnsatCore, 16 InterpolantComputations, 3 PerfectInterpolantSequences, 1006/1148 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: OVERALL_TIME: 0.7s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 10, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 55, DAG_INTERPRETER_EARLY_EXITS: 2, TOOLS_POST_APPLICATIONS: 31, TOOLS_POST_TIME: 0.1s, TOOLS_POST_CALL_APPLICATIONS: 49, TOOLS_POST_CALL_TIME: 0.3s, TOOLS_POST_RETURN_APPLICATIONS: 30, TOOLS_POST_RETURN_TIME: 0.2s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 110, TOOLS_QUANTIFIERELIM_TIME: 0.5s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.0s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 146, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 53, DOMAIN_JOIN_TIME: 0.1s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 0, DOMAIN_WIDEN_TIME: 0.0s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 0, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 55, DOMAIN_ISBOTTOM_TIME: 0.0s, LOOP_SUMMARIZER_APPLICATIONS: 0, LOOP_SUMMARIZER_CACHE_MISSES: 0, LOOP_SUMMARIZER_OVERALL_TIME: 0.0s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 0, CALL_SUMMARIZER_APPLICATIONS: 30, CALL_SUMMARIZER_CACHE_MISSES: 6, CALL_SUMMARIZER_OVERALL_TIME: 0.0s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 615, DAG_COMPRESSION_RETAINED_NODES: 162, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: (((((((((((!(unknown-#memory_int-unknown[1][0] == 48) || !(#NULL == 0)) || !(2 == unknown-#length-unknown[1])) || !(\valid[3] == 1)) || !(unknown-#length-unknown[3] == 12)) || !(\valid[0] == 0)) || !(unknown-#memory_int-unknown[1][1] == 0)) || ((((((b == q * x + y * s && 1 <= x) && a == y * r + p * x) && y <= 100) && x <= 100) && 1 <= y) && p * s == q * r + 1)) || !(\valid[1] == 1)) || !(#NULL == 0)) || !(10 == unknown-#length-unknown[2])) || !(\valid[2] == 1)) || unknown-#StackHeapBarrier-unknown <= 0 RESULT: Ultimate proved your program to be correct! [2023-04-02 22:53:23,688 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...