./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound50.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e8d55036 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound50.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 352373f9b097794e6947f5064b04543cec809ba042ac0b3a931e0e161838d7d3 --- Real Ultimate output --- This is Ultimate 0.2.2-?-e8d5503-m [2023-02-15 21:24:44,137 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 21:24:44,139 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 21:24:44,169 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 21:24:44,170 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 21:24:44,172 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 21:24:44,173 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 21:24:44,175 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 21:24:44,176 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 21:24:44,179 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 21:24:44,180 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 21:24:44,182 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 21:24:44,182 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 21:24:44,183 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 21:24:44,184 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 21:24:44,185 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 21:24:44,186 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 21:24:44,187 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 21:24:44,188 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 21:24:44,192 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 21:24:44,192 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 21:24:44,193 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 21:24:44,194 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 21:24:44,194 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 21:24:44,200 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 21:24:44,200 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 21:24:44,200 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 21:24:44,201 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 21:24:44,202 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 21:24:44,203 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 21:24:44,203 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 21:24:44,203 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 21:24:44,205 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 21:24:44,205 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 21:24:44,206 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 21:24:44,206 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 21:24:44,206 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 21:24:44,206 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 21:24:44,206 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 21:24:44,207 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 21:24:44,208 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 21:24:44,209 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-15 21:24:44,230 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 21:24:44,230 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 21:24:44,230 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 21:24:44,231 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 21:24:44,231 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-15 21:24:44,231 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-15 21:24:44,232 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 21:24:44,232 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 21:24:44,232 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 21:24:44,232 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 21:24:44,233 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-15 21:24:44,233 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 21:24:44,233 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-15 21:24:44,233 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 21:24:44,234 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-15 21:24:44,234 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-15 21:24:44,234 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-15 21:24:44,234 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-15 21:24:44,234 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-15 21:24:44,234 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 21:24:44,234 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-15 21:24:44,235 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 21:24:44,235 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 21:24:44,235 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-15 21:24:44,235 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 21:24:44,235 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 21:24:44,235 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-15 21:24:44,235 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-15 21:24:44,236 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-15 21:24:44,236 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-15 21:24:44,236 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-15 21:24:44,236 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-15 21:24:44,236 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-15 21:24:44,237 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-15 21:24:44,237 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-15 21:24:44,237 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 352373f9b097794e6947f5064b04543cec809ba042ac0b3a931e0e161838d7d3 [2023-02-15 21:24:44,385 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 21:24:44,405 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 21:24:44,407 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 21:24:44,408 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 21:24:44,408 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 21:24:44,409 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound50.c [2023-02-15 21:24:45,481 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 21:24:45,718 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 21:24:45,719 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound50.c [2023-02-15 21:24:45,723 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ad09adf6/6b167c2b4c6f4fb781271f48dd821b19/FLAG9e1fd5fc4 [2023-02-15 21:24:45,736 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ad09adf6/6b167c2b4c6f4fb781271f48dd821b19 [2023-02-15 21:24:45,738 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 21:24:45,739 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 21:24:45,741 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 21:24:45,741 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 21:24:45,743 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 21:24:45,744 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 09:24:45" (1/1) ... [2023-02-15 21:24:45,744 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5626ebb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:24:45, skipping insertion in model container [2023-02-15 21:24:45,744 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 09:24:45" (1/1) ... [2023-02-15 21:24:45,749 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 21:24:45,759 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 21:24:45,872 WARN L237 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/prodbin-ll_valuebound50.c[537,550] [2023-02-15 21:24:45,880 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 21:24:45,885 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 21:24:45,892 WARN L237 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/prodbin-ll_valuebound50.c[537,550] [2023-02-15 21:24:45,895 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 21:24:45,903 INFO L208 MainTranslator]: Completed translation [2023-02-15 21:24:45,904 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:24:45 WrapperNode [2023-02-15 21:24:45,904 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 21:24:45,905 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 21:24:45,905 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 21:24:45,905 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 21:24:45,909 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:24:45" (1/1) ... [2023-02-15 21:24:45,913 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:24:45" (1/1) ... [2023-02-15 21:24:45,922 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 42 [2023-02-15 21:24:45,923 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 21:24:45,923 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 21:24:45,923 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 21:24:45,923 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 21:24:45,928 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:24:45" (1/1) ... [2023-02-15 21:24:45,928 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:24:45" (1/1) ... [2023-02-15 21:24:45,929 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:24:45" (1/1) ... [2023-02-15 21:24:45,929 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:24:45" (1/1) ... [2023-02-15 21:24:45,931 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:24:45" (1/1) ... [2023-02-15 21:24:45,933 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:24:45" (1/1) ... [2023-02-15 21:24:45,933 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:24:45" (1/1) ... [2023-02-15 21:24:45,934 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:24:45" (1/1) ... [2023-02-15 21:24:45,934 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 21:24:45,935 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 21:24:45,935 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 21:24:45,935 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 21:24:45,936 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:24:45" (1/1) ... [2023-02-15 21:24:45,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 21:24:45,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 21:24:45,956 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) [2023-02-15 21:24:45,980 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 [2023-02-15 21:24:46,000 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-15 21:24:46,001 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-02-15 21:24:46,001 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-02-15 21:24:46,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-15 21:24:46,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 21:24:46,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 21:24:46,006 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-02-15 21:24:46,006 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-02-15 21:24:46,045 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 21:24:46,047 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 21:24:46,141 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 21:24:46,145 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 21:24:46,145 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-15 21:24:46,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 09:24:46 BoogieIcfgContainer [2023-02-15 21:24:46,146 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 21:24:46,148 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-15 21:24:46,148 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-15 21:24:46,150 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-15 21:24:46,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 09:24:45" (1/3) ... [2023-02-15 21:24:46,150 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12cd45a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 09:24:46, skipping insertion in model container [2023-02-15 21:24:46,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:24:45" (2/3) ... [2023-02-15 21:24:46,151 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12cd45a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 09:24:46, skipping insertion in model container [2023-02-15 21:24:46,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 09:24:46" (3/3) ... [2023-02-15 21:24:46,152 INFO L112 eAbstractionObserver]: Analyzing ICFG prodbin-ll_valuebound50.c [2023-02-15 21:24:46,163 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-15 21:24:46,164 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-15 21:24:46,193 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-15 21:24:46,197 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=PETRI_NET, 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;@598f0b86, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-15 21:24:46,197 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-15 21:24:46,200 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-15 21:24:46,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-02-15 21:24:46,205 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 21:24:46,205 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 21:24:46,206 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 21:24:46,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 21:24:46,209 INFO L85 PathProgramCache]: Analyzing trace with hash -861605892, now seen corresponding path program 1 times [2023-02-15 21:24:46,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 21:24:46,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314128290] [2023-02-15 21:24:46,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 21:24:46,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 21:24:46,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 21:24:46,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 21:24:46,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314128290] [2023-02-15 21:24:46,296 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-02-15 21:24:46,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [579111356] [2023-02-15 21:24:46,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 21:24:46,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 21:24:46,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 21:24:46,299 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) [2023-02-15 21:24:46,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-15 21:24:46,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 21:24:46,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 1 conjunts are in the unsatisfiable core [2023-02-15 21:24:46,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 21:24:46,368 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-02-15 21:24:46,368 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 21:24:46,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [579111356] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 21:24:46,369 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 21:24:46,369 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-15 21:24:46,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700535528] [2023-02-15 21:24:46,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 21:24:46,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-15 21:24:46,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 21:24:46,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-15 21:24:46,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-15 21:24:46,393 INFO L87 Difference]: Start difference. First operand has 27 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-15 21:24:46,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 21:24:46,407 INFO L93 Difference]: Finished difference Result 51 states and 71 transitions. [2023-02-15 21:24:46,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-15 21:24:46,408 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 24 [2023-02-15 21:24:46,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 21:24:46,413 INFO L225 Difference]: With dead ends: 51 [2023-02-15 21:24:46,413 INFO L226 Difference]: Without dead ends: 23 [2023-02-15 21:24:46,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-15 21:24:46,418 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 21:24:46,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 21:24:46,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-02-15 21:24:46,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2023-02-15 21:24:46,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-15 21:24:46,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2023-02-15 21:24:46,441 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 24 [2023-02-15 21:24:46,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 21:24:46,442 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2023-02-15 21:24:46,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-15 21:24:46,442 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2023-02-15 21:24:46,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-02-15 21:24:46,443 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 21:24:46,443 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 21:24:46,450 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-15 21:24:46,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-02-15 21:24:46,648 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 21:24:46,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 21:24:46,653 INFO L85 PathProgramCache]: Analyzing trace with hash -2010313222, now seen corresponding path program 1 times [2023-02-15 21:24:46,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 21:24:46,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011244754] [2023-02-15 21:24:46,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 21:24:46,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 21:24:46,668 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 21:24:46,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1873040454] [2023-02-15 21:24:46,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 21:24:46,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 21:24:46,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 21:24:46,687 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) [2023-02-15 21:24:46,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-15 21:24:46,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 21:24:46,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 17 conjunts are in the unsatisfiable core [2023-02-15 21:24:46,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 21:24:46,916 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-15 21:24:46,916 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 21:24:46,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 21:24:46,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011244754] [2023-02-15 21:24:46,916 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 21:24:46,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1873040454] [2023-02-15 21:24:46,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1873040454] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 21:24:46,917 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 21:24:46,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-02-15 21:24:46,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621035014] [2023-02-15 21:24:46,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 21:24:46,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-15 21:24:46,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 21:24:46,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-15 21:24:46,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-02-15 21:24:46,919 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 8 states, 8 states have (on average 1.75) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-15 21:24:47,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 21:24:47,060 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2023-02-15 21:24:47,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-15 21:24:47,061 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 24 [2023-02-15 21:24:47,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 21:24:47,062 INFO L225 Difference]: With dead ends: 39 [2023-02-15 21:24:47,062 INFO L226 Difference]: Without dead ends: 32 [2023-02-15 21:24:47,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-02-15 21:24:47,063 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 16 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 21:24:47,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 81 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 21:24:47,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-02-15 21:24:47,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2023-02-15 21:24:47,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 20 states have (on average 1.15) internal successors, (23), 21 states have internal predecessors, (23), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-15 21:24:47,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2023-02-15 21:24:47,074 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 24 [2023-02-15 21:24:47,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 21:24:47,075 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2023-02-15 21:24:47,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-15 21:24:47,075 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2023-02-15 21:24:47,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-02-15 21:24:47,076 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 21:24:47,076 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 21:24:47,086 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-15 21:24:47,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-02-15 21:24:47,300 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 21:24:47,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 21:24:47,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1371702355, now seen corresponding path program 1 times [2023-02-15 21:24:47,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 21:24:47,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283614664] [2023-02-15 21:24:47,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 21:24:47,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 21:24:47,318 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 21:24:47,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [550454116] [2023-02-15 21:24:47,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 21:24:47,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 21:24:47,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 21:24:47,320 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) [2023-02-15 21:24:47,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-15 21:24:47,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 21:24:47,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 34 conjunts are in the unsatisfiable core [2023-02-15 21:24:47,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 21:24:47,579 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-15 21:24:47,580 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 21:24:49,627 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-02-15 21:24:49,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 21:24:49,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283614664] [2023-02-15 21:24:49,628 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 21:24:49,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550454116] [2023-02-15 21:24:49,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [550454116] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 21:24:49,629 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 21:24:49,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 17 [2023-02-15 21:24:49,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960638434] [2023-02-15 21:24:49,629 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 21:24:49,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-02-15 21:24:49,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 21:24:49,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-02-15 21:24:49,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2023-02-15 21:24:49,631 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 15 states have internal predecessors, (31), 5 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2023-02-15 21:24:51,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 21:24:51,821 INFO L93 Difference]: Finished difference Result 48 states and 56 transitions. [2023-02-15 21:24:51,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-02-15 21:24:51,821 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 15 states have internal predecessors, (31), 5 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 33 [2023-02-15 21:24:51,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 21:24:51,823 INFO L225 Difference]: With dead ends: 48 [2023-02-15 21:24:51,823 INFO L226 Difference]: Without dead ends: 46 [2023-02-15 21:24:51,824 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=100, Invalid=452, Unknown=0, NotChecked=0, Total=552 [2023-02-15 21:24:51,824 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 36 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-02-15 21:24:51,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 99 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-02-15 21:24:51,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2023-02-15 21:24:51,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 43. [2023-02-15 21:24:51,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 30 states have (on average 1.2) internal successors, (36), 32 states have internal predecessors, (36), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2023-02-15 21:24:51,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 51 transitions. [2023-02-15 21:24:51,832 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 51 transitions. Word has length 33 [2023-02-15 21:24:51,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 21:24:51,832 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 51 transitions. [2023-02-15 21:24:51,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 15 states have internal predecessors, (31), 5 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2023-02-15 21:24:51,833 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 51 transitions. [2023-02-15 21:24:51,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-02-15 21:24:51,834 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 21:24:51,834 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 21:24:51,840 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-15 21:24:52,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 21:24:52,035 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 21:24:52,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 21:24:52,036 INFO L85 PathProgramCache]: Analyzing trace with hash 685673296, now seen corresponding path program 1 times [2023-02-15 21:24:52,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 21:24:52,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445925975] [2023-02-15 21:24:52,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 21:24:52,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 21:24:52,046 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 21:24:52,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [209695176] [2023-02-15 21:24:52,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 21:24:52,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 21:24:52,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 21:24:52,057 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) [2023-02-15 21:24:52,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-15 21:24:52,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 21:24:52,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 13 conjunts are in the unsatisfiable core [2023-02-15 21:24:52,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 21:24:52,139 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-02-15 21:24:52,139 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 21:24:52,196 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-02-15 21:24:52,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 21:24:52,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445925975] [2023-02-15 21:24:52,197 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 21:24:52,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [209695176] [2023-02-15 21:24:52,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [209695176] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 21:24:52,197 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 21:24:52,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2023-02-15 21:24:52,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976813448] [2023-02-15 21:24:52,198 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 21:24:52,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-02-15 21:24:52,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 21:24:52,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-02-15 21:24:52,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-02-15 21:24:52,199 INFO L87 Difference]: Start difference. First operand 43 states and 51 transitions. Second operand has 11 states, 10 states have (on average 2.6) internal successors, (26), 8 states have internal predecessors, (26), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2023-02-15 21:24:52,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 21:24:52,294 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2023-02-15 21:24:52,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-15 21:24:52,295 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.6) internal successors, (26), 8 states have internal predecessors, (26), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) Word has length 39 [2023-02-15 21:24:52,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 21:24:52,295 INFO L225 Difference]: With dead ends: 50 [2023-02-15 21:24:52,295 INFO L226 Difference]: Without dead ends: 43 [2023-02-15 21:24:52,296 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 66 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-02-15 21:24:52,296 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 13 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 21:24:52,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 139 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 21:24:52,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2023-02-15 21:24:52,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2023-02-15 21:24:52,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 30 states have (on average 1.1333333333333333) internal successors, (34), 31 states have internal predecessors, (34), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2023-02-15 21:24:52,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2023-02-15 21:24:52,302 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 39 [2023-02-15 21:24:52,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 21:24:52,302 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2023-02-15 21:24:52,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.6) internal successors, (26), 8 states have internal predecessors, (26), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2023-02-15 21:24:52,303 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2023-02-15 21:24:52,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-02-15 21:24:52,303 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 21:24:52,304 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 21:24:52,323 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-15 21:24:52,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 21:24:52,508 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 21:24:52,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 21:24:52,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1683883622, now seen corresponding path program 1 times [2023-02-15 21:24:52,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 21:24:52,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034913379] [2023-02-15 21:24:52,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 21:24:52,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 21:24:52,530 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 21:24:52,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1253893079] [2023-02-15 21:24:52,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 21:24:52,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 21:24:52,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 21:24:52,532 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) [2023-02-15 21:24:52,570 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-15 21:24:52,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 21:24:52,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 34 conjunts are in the unsatisfiable core [2023-02-15 21:24:52,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 21:24:52,889 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-02-15 21:24:52,889 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 21:24:58,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 21:24:58,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034913379] [2023-02-15 21:24:58,322 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 21:24:58,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1253893079] [2023-02-15 21:24:58,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1253893079] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 21:24:58,323 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-15 21:24:58,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2023-02-15 21:24:58,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328882012] [2023-02-15 21:24:58,323 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-15 21:24:58,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-02-15 21:24:58,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 21:24:58,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-02-15 21:24:58,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=344, Unknown=2, NotChecked=0, Total=420 [2023-02-15 21:24:58,327 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand has 14 states, 14 states have (on average 2.0) internal successors, (28), 12 states have internal predecessors, (28), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-02-15 21:24:59,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 21:24:59,154 INFO L93 Difference]: Finished difference Result 63 states and 71 transitions. [2023-02-15 21:24:59,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-02-15 21:24:59,156 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 12 states have internal predecessors, (28), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 42 [2023-02-15 21:24:59,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 21:24:59,157 INFO L225 Difference]: With dead ends: 63 [2023-02-15 21:24:59,158 INFO L226 Difference]: Without dead ends: 61 [2023-02-15 21:24:59,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=93, Invalid=457, Unknown=2, NotChecked=0, Total=552 [2023-02-15 21:24:59,158 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 21 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-02-15 21:24:59,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 115 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-02-15 21:24:59,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2023-02-15 21:24:59,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 58. [2023-02-15 21:24:59,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 42 states have (on average 1.119047619047619) internal successors, (47), 44 states have internal predecessors, (47), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 7 states have call predecessors, (9), 9 states have call successors, (9) [2023-02-15 21:24:59,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 65 transitions. [2023-02-15 21:24:59,170 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 65 transitions. Word has length 42 [2023-02-15 21:24:59,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 21:24:59,171 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 65 transitions. [2023-02-15 21:24:59,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 12 states have internal predecessors, (28), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-02-15 21:24:59,171 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 65 transitions. [2023-02-15 21:24:59,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-02-15 21:24:59,175 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 21:24:59,175 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 21:24:59,187 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-15 21:24:59,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 21:24:59,380 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 21:24:59,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 21:24:59,385 INFO L85 PathProgramCache]: Analyzing trace with hash -196098865, now seen corresponding path program 1 times [2023-02-15 21:24:59,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 21:24:59,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797472914] [2023-02-15 21:24:59,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 21:24:59,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 21:24:59,393 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 21:24:59,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1217693300] [2023-02-15 21:24:59,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 21:24:59,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 21:24:59,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 21:24:59,395 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) [2023-02-15 21:24:59,441 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-15 21:24:59,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 21:24:59,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 50 conjunts are in the unsatisfiable core [2023-02-15 21:24:59,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 21:25:01,776 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 14 proven. 25 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-02-15 21:25:01,777 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 21:25:04,310 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 25 proven. 4 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-02-15 21:25:04,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 21:25:04,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797472914] [2023-02-15 21:25:04,311 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 21:25:04,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1217693300] [2023-02-15 21:25:04,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1217693300] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 21:25:04,311 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 21:25:04,311 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 10] total 24 [2023-02-15 21:25:04,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905491369] [2023-02-15 21:25:04,312 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 21:25:04,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-02-15 21:25:04,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 21:25:04,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-02-15 21:25:04,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=454, Unknown=0, NotChecked=0, Total=552 [2023-02-15 21:25:04,313 INFO L87 Difference]: Start difference. First operand 58 states and 65 transitions. Second operand has 24 states, 24 states have (on average 2.0) internal successors, (48), 22 states have internal predecessors, (48), 8 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) [2023-02-15 21:25:07,397 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-15 21:25:14,616 WARN L233 SmtUtils]: Spent 6.31s on a formula simplification. DAG size of input: 66 DAG size of output: 44 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-15 21:25:19,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 21:25:19,262 INFO L93 Difference]: Finished difference Result 90 states and 106 transitions. [2023-02-15 21:25:19,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-02-15 21:25:19,262 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.0) internal successors, (48), 22 states have internal predecessors, (48), 8 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) Word has length 51 [2023-02-15 21:25:19,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 21:25:19,263 INFO L225 Difference]: With dead ends: 90 [2023-02-15 21:25:19,263 INFO L226 Difference]: Without dead ends: 88 [2023-02-15 21:25:19,266 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 78 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 13.6s TimeCoverageRelationStatistics Valid=231, Invalid=959, Unknown=0, NotChecked=0, Total=1190 [2023-02-15 21:25:19,266 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 48 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 639 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-02-15 21:25:19,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 179 Invalid, 670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 639 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-02-15 21:25:19,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2023-02-15 21:25:19,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2023-02-15 21:25:19,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 65 states have (on average 1.1384615384615384) internal successors, (74), 69 states have internal predecessors, (74), 15 states have call successors, (15), 7 states have call predecessors, (15), 7 states have return successors, (15), 11 states have call predecessors, (15), 15 states have call successors, (15) [2023-02-15 21:25:19,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 104 transitions. [2023-02-15 21:25:19,279 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 104 transitions. Word has length 51 [2023-02-15 21:25:19,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 21:25:19,280 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 104 transitions. [2023-02-15 21:25:19,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.0) internal successors, (48), 22 states have internal predecessors, (48), 8 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) [2023-02-15 21:25:19,280 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 104 transitions. [2023-02-15 21:25:19,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-02-15 21:25:19,281 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 21:25:19,281 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 21:25:19,285 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-02-15 21:25:19,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 21:25:19,485 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 21:25:19,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 21:25:19,486 INFO L85 PathProgramCache]: Analyzing trace with hash 602841912, now seen corresponding path program 2 times [2023-02-15 21:25:19,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 21:25:19,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357619754] [2023-02-15 21:25:19,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 21:25:19,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 21:25:19,496 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 21:25:19,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [81249609] [2023-02-15 21:25:19,497 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 21:25:19,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 21:25:19,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 21:25:19,498 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) [2023-02-15 21:25:19,529 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-15 21:25:19,577 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 21:25:19,577 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 21:25:19,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 58 conjunts are in the unsatisfiable core [2023-02-15 21:25:19,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 21:25:21,612 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 14 proven. 47 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-02-15 21:25:21,612 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 21:25:25,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 21:25:25,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357619754] [2023-02-15 21:25:25,335 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 21:25:25,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [81249609] [2023-02-15 21:25:25,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [81249609] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 21:25:25,335 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-15 21:25:25,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2023-02-15 21:25:25,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927858609] [2023-02-15 21:25:25,335 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-15 21:25:25,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-02-15 21:25:25,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 21:25:25,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-02-15 21:25:25,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=620, Unknown=0, NotChecked=0, Total=756 [2023-02-15 21:25:25,337 INFO L87 Difference]: Start difference. First operand 88 states and 104 transitions. Second operand has 20 states, 20 states have (on average 1.8) internal successors, (36), 18 states have internal predecessors, (36), 7 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2023-02-15 21:25:26,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 21:25:26,231 INFO L93 Difference]: Finished difference Result 118 states and 137 transitions. [2023-02-15 21:25:26,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-02-15 21:25:26,232 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.8) internal successors, (36), 18 states have internal predecessors, (36), 7 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) Word has length 60 [2023-02-15 21:25:26,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 21:25:26,233 INFO L225 Difference]: With dead ends: 118 [2023-02-15 21:25:26,233 INFO L226 Difference]: Without dead ends: 116 [2023-02-15 21:25:26,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 49 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=155, Invalid=775, Unknown=0, NotChecked=0, Total=930 [2023-02-15 21:25:26,233 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 24 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 616 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-02-15 21:25:26,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 170 Invalid, 626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 616 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-02-15 21:25:26,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2023-02-15 21:25:26,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 113. [2023-02-15 21:25:26,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 84 states have (on average 1.130952380952381) internal successors, (95), 89 states have internal predecessors, (95), 18 states have call successors, (18), 10 states have call predecessors, (18), 10 states have return successors, (18), 13 states have call predecessors, (18), 18 states have call successors, (18) [2023-02-15 21:25:26,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 131 transitions. [2023-02-15 21:25:26,263 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 131 transitions. Word has length 60 [2023-02-15 21:25:26,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 21:25:26,263 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 131 transitions. [2023-02-15 21:25:26,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.8) internal successors, (36), 18 states have internal predecessors, (36), 7 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2023-02-15 21:25:26,263 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 131 transitions. [2023-02-15 21:25:26,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-02-15 21:25:26,264 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 21:25:26,264 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 21:25:26,269 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-02-15 21:25:26,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 21:25:26,470 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 21:25:26,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 21:25:26,470 INFO L85 PathProgramCache]: Analyzing trace with hash 743390522, now seen corresponding path program 2 times [2023-02-15 21:25:26,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 21:25:26,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673289397] [2023-02-15 21:25:26,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 21:25:26,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 21:25:26,477 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 21:25:26,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [37625376] [2023-02-15 21:25:26,478 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 21:25:26,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 21:25:26,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 21:25:26,490 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) [2023-02-15 21:25:26,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-02-15 21:25:26,564 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 21:25:26,564 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 21:25:26,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 50 conjunts are in the unsatisfiable core [2023-02-15 21:25:26,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 21:25:56,163 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 24 proven. 34 refuted. 6 times theorem prover too weak. 18 trivial. 0 not checked. [2023-02-15 21:25:56,164 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 21:26:08,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 21:26:08,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673289397] [2023-02-15 21:26:08,152 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 21:26:08,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [37625376] [2023-02-15 21:26:08,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [37625376] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 21:26:08,152 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-15 21:26:08,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2023-02-15 21:26:08,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969203584] [2023-02-15 21:26:08,153 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-15 21:26:08,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-02-15 21:26:08,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 21:26:08,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-02-15 21:26:08,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=566, Unknown=9, NotChecked=0, Total=702 [2023-02-15 21:26:08,154 INFO L87 Difference]: Start difference. First operand 113 states and 131 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 17 states have internal predecessors, (36), 6 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2023-02-15 21:26:10,060 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-15 21:26:13,798 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-15 21:26:15,992 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-15 21:26:17,194 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-15 21:26:18,265 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-15 21:26:20,466 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-15 21:26:23,147 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-15 21:26:24,157 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-15 21:26:25,255 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-15 21:26:28,415 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-15 21:26:29,695 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-15 21:26:32,411 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-15 21:26:35,430 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-15 21:26:38,099 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-15 21:26:40,101 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-15 21:26:42,103 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-15 21:26:44,105 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-15 21:26:46,107 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-15 21:26:48,109 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-15 21:26:50,111 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-15 21:26:52,248 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-15 21:26:54,250 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-15 21:26:56,058 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-15 21:26:57,140 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-15 21:26:59,142 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-15 21:27:00,541 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-15 21:27:05,299 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-15 21:27:07,591 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-15 21:27:09,680 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-15 21:27:11,672 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-15 21:27:12,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 21:27:12,691 INFO L93 Difference]: Finished difference Result 136 states and 157 transitions. [2023-02-15 21:27:12,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-02-15 21:27:12,691 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 17 states have internal predecessors, (36), 6 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) Word has length 60 [2023-02-15 21:27:12,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 21:27:12,692 INFO L225 Difference]: With dead ends: 136 [2023-02-15 21:27:12,692 INFO L226 Difference]: Without dead ends: 134 [2023-02-15 21:27:12,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 50 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 34.2s TimeCoverageRelationStatistics Valid=146, Invalid=715, Unknown=9, NotChecked=0, Total=870 [2023-02-15 21:27:12,693 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 23 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 458 mSolverCounterSat, 11 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 64.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 458 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 64.3s IncrementalHoareTripleChecker+Time [2023-02-15 21:27:12,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 134 Invalid, 479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 458 Invalid, 10 Unknown, 0 Unchecked, 64.3s Time] [2023-02-15 21:27:12,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2023-02-15 21:27:12,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 106. [2023-02-15 21:27:12,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 79 states have (on average 1.139240506329114) internal successors, (90), 83 states have internal predecessors, (90), 17 states have call successors, (17), 9 states have call predecessors, (17), 9 states have return successors, (17), 13 states have call predecessors, (17), 17 states have call successors, (17) [2023-02-15 21:27:12,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 124 transitions. [2023-02-15 21:27:12,706 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 124 transitions. Word has length 60 [2023-02-15 21:27:12,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 21:27:12,706 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 124 transitions. [2023-02-15 21:27:12,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 17 states have internal predecessors, (36), 6 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2023-02-15 21:27:12,706 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 124 transitions. [2023-02-15 21:27:12,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-02-15 21:27:12,707 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 21:27:12,707 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 21:27:12,720 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-02-15 21:27:12,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-02-15 21:27:12,913 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 21:27:12,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 21:27:12,913 INFO L85 PathProgramCache]: Analyzing trace with hash 992340781, now seen corresponding path program 3 times [2023-02-15 21:27:12,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 21:27:12,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081643787] [2023-02-15 21:27:12,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 21:27:12,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 21:27:12,924 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 21:27:12,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1884944382] [2023-02-15 21:27:12,926 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-15 21:27:12,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 21:27:12,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 21:27:12,941 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) [2023-02-15 21:27:12,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-02-15 21:27:13,021 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-02-15 21:27:13,022 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 21:27:13,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 27 conjunts are in the unsatisfiable core [2023-02-15 21:27:13,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 21:27:14,570 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 65 proven. 9 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-02-15 21:27:14,571 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 21:27:15,078 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 58 proven. 11 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2023-02-15 21:27:15,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 21:27:15,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081643787] [2023-02-15 21:27:15,078 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 21:27:15,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1884944382] [2023-02-15 21:27:15,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1884944382] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 21:27:15,079 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 21:27:15,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 22 [2023-02-15 21:27:15,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847823802] [2023-02-15 21:27:15,079 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 21:27:15,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-02-15 21:27:15,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 21:27:15,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-02-15 21:27:15,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=385, Unknown=0, NotChecked=0, Total=462 [2023-02-15 21:27:15,080 INFO L87 Difference]: Start difference. First operand 106 states and 124 transitions. Second operand has 22 states, 22 states have (on average 2.4545454545454546) internal successors, (54), 21 states have internal predecessors, (54), 7 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) [2023-02-15 21:27:19,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 21:27:19,081 INFO L93 Difference]: Finished difference Result 144 states and 165 transitions. [2023-02-15 21:27:19,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-02-15 21:27:19,081 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.4545454545454546) internal successors, (54), 21 states have internal predecessors, (54), 7 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) Word has length 69 [2023-02-15 21:27:19,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 21:27:19,082 INFO L225 Difference]: With dead ends: 144 [2023-02-15 21:27:19,082 INFO L226 Difference]: Without dead ends: 64 [2023-02-15 21:27:19,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 114 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=155, Invalid=715, Unknown=0, NotChecked=0, Total=870 [2023-02-15 21:27:19,083 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 24 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-02-15 21:27:19,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 123 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-02-15 21:27:19,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-02-15 21:27:19,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2023-02-15 21:27:19,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 47 states have (on average 1.0212765957446808) internal successors, (48), 48 states have internal predecessors, (48), 9 states have call successors, (9), 7 states have call predecessors, (9), 7 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2023-02-15 21:27:19,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 66 transitions. [2023-02-15 21:27:19,093 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 66 transitions. Word has length 69 [2023-02-15 21:27:19,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 21:27:19,093 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 66 transitions. [2023-02-15 21:27:19,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.4545454545454546) internal successors, (54), 21 states have internal predecessors, (54), 7 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) [2023-02-15 21:27:19,093 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 66 transitions. [2023-02-15 21:27:19,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-02-15 21:27:19,094 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 21:27:19,094 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 21:27:19,098 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-02-15 21:27:19,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 21:27:19,298 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 21:27:19,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 21:27:19,299 INFO L85 PathProgramCache]: Analyzing trace with hash -2008487185, now seen corresponding path program 3 times [2023-02-15 21:27:19,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 21:27:19,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056734589] [2023-02-15 21:27:19,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 21:27:19,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 21:27:19,305 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 21:27:19,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1975933632] [2023-02-15 21:27:19,305 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-15 21:27:19,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 21:27:19,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 21:27:19,307 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 21:27:19,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-02-15 21:27:19,375 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-02-15 21:27:19,375 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 21:27:19,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 31 conjunts are in the unsatisfiable core [2023-02-15 21:27:19,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 21:27:20,053 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 24 proven. 64 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-02-15 21:27:20,053 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 21:27:23,278 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 54 proven. 34 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-02-15 21:27:23,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 21:27:23,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056734589] [2023-02-15 21:27:23,278 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 21:27:23,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1975933632] [2023-02-15 21:27:23,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1975933632] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 21:27:23,278 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 21:27:23,278 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 16] total 34 [2023-02-15 21:27:23,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200952006] [2023-02-15 21:27:23,279 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 21:27:23,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-02-15 21:27:23,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 21:27:23,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-02-15 21:27:23,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=909, Unknown=1, NotChecked=0, Total=1122 [2023-02-15 21:27:23,280 INFO L87 Difference]: Start difference. First operand 64 states and 66 transitions. Second operand has 34 states, 34 states have (on average 2.0) internal successors, (68), 31 states have internal predecessors, (68), 15 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 13 states have call predecessors, (15), 13 states have call successors, (15) [2023-02-15 21:27:25,530 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-02-15 21:27:28,231 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-02-15 21:27:51,742 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-02-15 21:28:03,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 21:28:03,185 INFO L93 Difference]: Finished difference Result 72 states and 75 transitions. [2023-02-15 21:28:03,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-02-15 21:28:03,185 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.0) internal successors, (68), 31 states have internal predecessors, (68), 15 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 13 states have call predecessors, (15), 13 states have call successors, (15) Word has length 69 [2023-02-15 21:28:03,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 21:28:03,186 INFO L225 Difference]: With dead ends: 72 [2023-02-15 21:28:03,186 INFO L226 Difference]: Without dead ends: 0 [2023-02-15 21:28:03,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 102 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 734 ImplicationChecksByTransitivity, 36.2s TimeCoverageRelationStatistics Valid=524, Invalid=2023, Unknown=3, NotChecked=0, Total=2550 [2023-02-15 21:28:03,187 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 44 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2023-02-15 21:28:03,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 128 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2023-02-15 21:28:03,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-02-15 21:28:03,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-02-15 21:28:03,188 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) [2023-02-15 21:28:03,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-02-15 21:28:03,188 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 69 [2023-02-15 21:28:03,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 21:28:03,188 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-15 21:28:03,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.0) internal successors, (68), 31 states have internal predecessors, (68), 15 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 13 states have call predecessors, (15), 13 states have call successors, (15) [2023-02-15 21:28:03,188 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-02-15 21:28:03,188 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-02-15 21:28:03,190 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-02-15 21:28:03,196 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-02-15 21:28:03,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-02-15 21:28:03,392 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-02-15 21:28:10,257 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-02-15 21:28:10,257 INFO L895 garLoopResultBuilder]: At program point L27(line 27) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~a~0#1| 50) (<= 0 |ULTIMATE.start_main_~a~0#1|)) [2023-02-15 21:28:10,257 INFO L895 garLoopResultBuilder]: At program point L27-1(line 27) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~a~0#1| 50) (<= 0 |ULTIMATE.start_main_~a~0#1|) (<= |ULTIMATE.start_main_~b~0#1| 50) (<= 0 |ULTIMATE.start_main_~b~0#1|)) [2023-02-15 21:28:10,257 INFO L902 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: true [2023-02-15 21:28:10,257 INFO L899 garLoopResultBuilder]: For program point L25-1(line 25) no Hoare annotation was computed. [2023-02-15 21:28:10,257 INFO L899 garLoopResultBuilder]: For program point L46(line 46) no Hoare annotation was computed. [2023-02-15 21:28:10,257 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-02-15 21:28:10,257 INFO L902 garLoopResultBuilder]: At program point main_returnLabel#1(lines 20 49) the Hoare annotation is: true [2023-02-15 21:28:10,257 INFO L895 garLoopResultBuilder]: At program point L34-2(lines 34 45) the Hoare annotation is: (and (<= 1 |ULTIMATE.start_main_~b~0#1|) (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~x~0#1|) |ULTIMATE.start_main_~z~0#1|) (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|)) (<= |ULTIMATE.start_main_~a~0#1| 50) (<= 0 |ULTIMATE.start_main_~a~0#1|) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~b~0#1| 50)) [2023-02-15 21:28:10,257 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-02-15 21:28:10,257 INFO L895 garLoopResultBuilder]: At program point L34-3(lines 34 45) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|))) (and (<= 1 |ULTIMATE.start_main_~b~0#1|) (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~x~0#1|) |ULTIMATE.start_main_~z~0#1|) .cse0) (= |ULTIMATE.start_main_~z~0#1| .cse0) (<= |ULTIMATE.start_main_~b~0#1| 50))) [2023-02-15 21:28:10,257 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-02-15 21:28:10,257 INFO L899 garLoopResultBuilder]: For program point L28(line 28) no Hoare annotation was computed. [2023-02-15 21:28:10,257 INFO L899 garLoopResultBuilder]: For program point L39(lines 39 42) no Hoare annotation was computed. [2023-02-15 21:28:10,257 INFO L899 garLoopResultBuilder]: For program point L39-2(lines 39 42) no Hoare annotation was computed. [2023-02-15 21:28:10,258 INFO L895 garLoopResultBuilder]: At program point L35(line 35) the Hoare annotation is: (and (<= 1 |ULTIMATE.start_main_~b~0#1|) (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~x~0#1|) |ULTIMATE.start_main_~z~0#1|) (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|)) (<= |ULTIMATE.start_main_~a~0#1| 50) (<= 0 |ULTIMATE.start_main_~a~0#1|) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~b~0#1| 50)) [2023-02-15 21:28:10,258 INFO L899 garLoopResultBuilder]: For program point L35-1(lines 34 45) no Hoare annotation was computed. [2023-02-15 21:28:10,258 INFO L899 garLoopResultBuilder]: For program point L10(line 10) no Hoare annotation was computed. [2023-02-15 21:28:10,258 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 9 11) the Hoare annotation is: true [2023-02-15 21:28:10,258 INFO L899 garLoopResultBuilder]: For program point L10-2(lines 9 11) no Hoare annotation was computed. [2023-02-15 21:28:10,258 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 9 11) no Hoare annotation was computed. [2023-02-15 21:28:10,258 INFO L899 garLoopResultBuilder]: For program point L14(lines 14 15) no Hoare annotation was computed. [2023-02-15 21:28:10,258 INFO L899 garLoopResultBuilder]: For program point L13(lines 13 16) no Hoare annotation was computed. [2023-02-15 21:28:10,258 INFO L899 garLoopResultBuilder]: For program point L13-2(lines 12 18) no Hoare annotation was computed. [2023-02-15 21:28:10,258 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 12 18) no Hoare annotation was computed. [2023-02-15 21:28:10,258 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 12 18) the Hoare annotation is: true [2023-02-15 21:28:10,258 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 15) no Hoare annotation was computed. [2023-02-15 21:28:10,261 INFO L445 BasicCegarLoop]: Path program histogram: [3, 3, 1, 1, 1, 1] [2023-02-15 21:28:10,262 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-15 21:28:10,272 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.02 09:28:10 BoogieIcfgContainer [2023-02-15 21:28:10,272 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-15 21:28:10,272 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-15 21:28:10,273 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-15 21:28:10,273 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-15 21:28:10,273 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 09:24:46" (3/4) ... [2023-02-15 21:28:10,275 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-02-15 21:28:10,279 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2023-02-15 21:28:10,279 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2023-02-15 21:28:10,283 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2023-02-15 21:28:10,283 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-02-15 21:28:10,283 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-02-15 21:28:10,283 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-02-15 21:28:10,307 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-15 21:28:10,307 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-15 21:28:10,308 INFO L158 Benchmark]: Toolchain (without parser) took 204568.36ms. Allocated memory was 174.1MB in the beginning and 260.0MB in the end (delta: 86.0MB). Free memory was 142.9MB in the beginning and 104.9MB in the end (delta: 37.9MB). Peak memory consumption was 126.1MB. Max. memory is 16.1GB. [2023-02-15 21:28:10,308 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 121.6MB. Free memory is still 75.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 21:28:10,308 INFO L158 Benchmark]: CACSL2BoogieTranslator took 163.18ms. Allocated memory is still 174.1MB. Free memory was 142.9MB in the beginning and 132.5MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-15 21:28:10,308 INFO L158 Benchmark]: Boogie Procedure Inliner took 18.15ms. Allocated memory is still 174.1MB. Free memory was 132.5MB in the beginning and 131.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-15 21:28:10,309 INFO L158 Benchmark]: Boogie Preprocessor took 11.30ms. Allocated memory is still 174.1MB. Free memory was 131.0MB in the beginning and 130.1MB in the end (delta: 851.7kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 21:28:10,309 INFO L158 Benchmark]: RCFGBuilder took 211.73ms. Allocated memory is still 174.1MB. Free memory was 129.7MB in the beginning and 119.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-15 21:28:10,309 INFO L158 Benchmark]: TraceAbstraction took 204124.44ms. Allocated memory was 174.1MB in the beginning and 260.0MB in the end (delta: 86.0MB). Free memory was 118.8MB in the beginning and 107.0MB in the end (delta: 11.8MB). Peak memory consumption was 132.6MB. Max. memory is 16.1GB. [2023-02-15 21:28:10,309 INFO L158 Benchmark]: Witness Printer took 34.47ms. Allocated memory is still 260.0MB. Free memory was 107.0MB in the beginning and 104.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-15 21:28:10,311 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 121.6MB. Free memory is still 75.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 163.18ms. Allocated memory is still 174.1MB. Free memory was 142.9MB in the beginning and 132.5MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 18.15ms. Allocated memory is still 174.1MB. Free memory was 132.5MB in the beginning and 131.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 11.30ms. Allocated memory is still 174.1MB. Free memory was 131.0MB in the beginning and 130.1MB in the end (delta: 851.7kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 211.73ms. Allocated memory is still 174.1MB. Free memory was 129.7MB in the beginning and 119.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 204124.44ms. Allocated memory was 174.1MB in the beginning and 260.0MB in the end (delta: 86.0MB). Free memory was 118.8MB in the beginning and 107.0MB in the end (delta: 11.8MB). Peak memory consumption was 132.6MB. Max. memory is 16.1GB. * Witness Printer took 34.47ms. Allocated memory is still 260.0MB. Free memory was 107.0MB in the beginning and 104.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * 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: 15]: 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 3 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 204.1s, OverallIterations: 10, TraceHistogramMax: 6, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 127.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 6.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 10 mSolverCounterUnknown, 262 SdHoareTripleChecker+Valid, 80.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 249 mSDsluCounter, 1199 SdHoareTripleChecker+Invalid, 79.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1009 mSDsCounter, 122 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3127 IncrementalHoareTripleChecker+Invalid, 3259 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 122 mSolverCounterUnsat, 190 mSDtfsCounter, 3127 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 831 GetRequests, 587 SyntacticMatches, 14 SemanticMatches, 230 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1850 ImplicationChecksByTransitivity, 98.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=113occurred in iteration=7, InterpolantAutomatonStates: 148, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 40 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 35 PreInvPairs, 75 NumberOfFragments, 95 HoareAnnotationTreeSize, 35 FomulaSimplifications, 156 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 9 FomulaSimplificationsInter, 5578 FormulaSimplificationTreeSizeReductionInter, 6.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 66.4s InterpolantComputationTime, 495 NumberOfCodeBlocks, 477 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 717 ConstructedInterpolants, 6 QuantifiedInterpolants, 6049 SizeOfPredicates, 41 NumberOfNonLiveVariables, 1149 ConjunctsInSsa, 315 ConjunctsInUnsatCore, 15 InterpolantComputations, 2 PerfectInterpolantSequences, 632/885 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: ((((1 <= b && y * x + z == a * b) && a <= 50) && 0 <= a) && 0 <= y) && b <= 50 RESULT: Ultimate proved your program to be correct! [2023-02-15 21:28:10,386 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... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE