./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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/uthash-2.0.2/uthash_SAX_test6-2.i -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 bb48026e7f870ff561a4cdd394c24cb5edb1d0f2fc8e8ef2bffe0b7b8438fda4 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-23 05:10:06,166 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-23 05:10:06,168 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-23 05:10:06,204 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-23 05:10:06,204 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-23 05:10:06,205 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-23 05:10:06,207 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-23 05:10:06,208 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-23 05:10:06,210 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-23 05:10:06,213 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-23 05:10:06,214 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-23 05:10:06,215 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-23 05:10:06,216 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-23 05:10:06,217 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-23 05:10:06,218 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-23 05:10:06,220 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-23 05:10:06,221 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-23 05:10:06,222 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-23 05:10:06,223 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-23 05:10:06,227 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-23 05:10:06,229 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-23 05:10:06,229 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-23 05:10:06,230 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-23 05:10:06,231 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-23 05:10:06,232 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-23 05:10:06,237 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-23 05:10:06,238 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-23 05:10:06,238 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-23 05:10:06,239 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-23 05:10:06,240 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-23 05:10:06,241 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-23 05:10:06,241 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-23 05:10:06,243 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-23 05:10:06,243 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-23 05:10:06,244 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-23 05:10:06,244 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-23 05:10:06,245 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-23 05:10:06,245 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-23 05:10:06,245 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-23 05:10:06,246 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-23 05:10:06,246 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-23 05:10:06,248 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-23 05:10:06,249 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-23 05:10:06,274 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-23 05:10:06,275 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-23 05:10:06,275 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-23 05:10:06,275 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-23 05:10:06,276 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-23 05:10:06,276 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-23 05:10:06,277 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-23 05:10:06,277 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-23 05:10:06,277 INFO L138 SettingsManager]: * Use SBE=true [2022-07-23 05:10:06,278 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-23 05:10:06,278 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-23 05:10:06,278 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-23 05:10:06,278 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-23 05:10:06,279 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-23 05:10:06,279 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-23 05:10:06,279 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-23 05:10:06,279 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-23 05:10:06,279 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-23 05:10:06,279 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-23 05:10:06,281 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-23 05:10:06,281 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-23 05:10:06,282 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-23 05:10:06,282 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-23 05:10:06,282 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-23 05:10:06,282 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-23 05:10:06,283 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-23 05:10:06,283 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-23 05:10:06,283 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-23 05:10:06,283 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-23 05:10:06,283 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-23 05:10:06,284 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-23 05:10:06,284 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-23 05:10:06,284 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-23 05:10:06,284 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bb48026e7f870ff561a4cdd394c24cb5edb1d0f2fc8e8ef2bffe0b7b8438fda4 [2022-07-23 05:10:06,475 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-23 05:10:06,488 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-23 05:10:06,491 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-23 05:10:06,493 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-23 05:10:06,493 INFO L275 PluginConnector]: CDTParser initialized [2022-07-23 05:10:06,494 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i [2022-07-23 05:10:06,549 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/923765351/fa13bfcc963748f2945b446bf792c11e/FLAGb353b69d0 [2022-07-23 05:10:06,971 INFO L306 CDTParser]: Found 1 translation units. [2022-07-23 05:10:06,974 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i [2022-07-23 05:10:06,994 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/923765351/fa13bfcc963748f2945b446bf792c11e/FLAGb353b69d0 [2022-07-23 05:10:07,302 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/923765351/fa13bfcc963748f2945b446bf792c11e [2022-07-23 05:10:07,304 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-23 05:10:07,305 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-23 05:10:07,311 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-23 05:10:07,312 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-23 05:10:07,314 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-23 05:10:07,314 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 05:10:07" (1/1) ... [2022-07-23 05:10:07,315 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68933b53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 05:10:07, skipping insertion in model container [2022-07-23 05:10:07,315 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 05:10:07" (1/1) ... [2022-07-23 05:10:07,320 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-23 05:10:07,368 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-23 05:10:07,771 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i[44118,44131] [2022-07-23 05:10:07,788 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i[44660,44673] [2022-07-23 05:10:07,862 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i[56247,56260] [2022-07-23 05:10:07,866 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i[56368,56381] [2022-07-23 05:10:07,875 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 05:10:07,892 INFO L203 MainTranslator]: Completed pre-run [2022-07-23 05:10:07,919 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i[44118,44131] [2022-07-23 05:10:07,922 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i[44660,44673] [2022-07-23 05:10:07,967 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i[56247,56260] [2022-07-23 05:10:07,968 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i[56368,56381] [2022-07-23 05:10:07,981 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 05:10:08,042 INFO L208 MainTranslator]: Completed translation [2022-07-23 05:10:08,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 05:10:08 WrapperNode [2022-07-23 05:10:08,043 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-23 05:10:08,043 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-23 05:10:08,044 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-23 05:10:08,044 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-23 05:10:08,049 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 05:10:08" (1/1) ... [2022-07-23 05:10:08,078 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 05:10:08" (1/1) ... [2022-07-23 05:10:08,133 INFO L137 Inliner]: procedures = 282, calls = 347, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 1199 [2022-07-23 05:10:08,139 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-23 05:10:08,140 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-23 05:10:08,140 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-23 05:10:08,140 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-23 05:10:08,147 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 05:10:08" (1/1) ... [2022-07-23 05:10:08,149 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 05:10:08" (1/1) ... [2022-07-23 05:10:08,158 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 05:10:08" (1/1) ... [2022-07-23 05:10:08,159 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 05:10:08" (1/1) ... [2022-07-23 05:10:08,222 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 05:10:08" (1/1) ... [2022-07-23 05:10:08,232 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 05:10:08" (1/1) ... [2022-07-23 05:10:08,236 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 05:10:08" (1/1) ... [2022-07-23 05:10:08,251 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-23 05:10:08,257 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-23 05:10:08,258 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-23 05:10:08,258 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-23 05:10:08,259 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 05:10:08" (1/1) ... [2022-07-23 05:10:08,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-23 05:10:08,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 05:10:08,289 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) [2022-07-23 05:10:08,295 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 [2022-07-23 05:10:08,316 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-23 05:10:08,316 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-07-23 05:10:08,316 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-23 05:10:08,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-23 05:10:08,316 INFO L130 BoogieDeclarations]: Found specification of procedure alt_bzero [2022-07-23 05:10:08,316 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_bzero [2022-07-23 05:10:08,316 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-23 05:10:08,316 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-23 05:10:08,316 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-23 05:10:08,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-23 05:10:08,316 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-23 05:10:08,317 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-23 05:10:08,317 INFO L130 BoogieDeclarations]: Found specification of procedure alt_malloc [2022-07-23 05:10:08,317 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_malloc [2022-07-23 05:10:08,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-23 05:10:08,317 INFO L130 BoogieDeclarations]: Found specification of procedure alt_free [2022-07-23 05:10:08,317 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_free [2022-07-23 05:10:08,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-23 05:10:08,317 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-23 05:10:08,317 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-23 05:10:08,514 INFO L234 CfgBuilder]: Building ICFG [2022-07-23 05:10:08,515 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-23 05:10:09,442 INFO L275 CfgBuilder]: Performing block encoding [2022-07-23 05:10:09,449 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-23 05:10:09,451 INFO L299 CfgBuilder]: Removed 72 assume(true) statements. [2022-07-23 05:10:09,455 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 05:10:09 BoogieIcfgContainer [2022-07-23 05:10:09,455 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-23 05:10:09,457 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-23 05:10:09,457 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-23 05:10:09,460 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-23 05:10:09,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.07 05:10:07" (1/3) ... [2022-07-23 05:10:09,461 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fb42a8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 05:10:09, skipping insertion in model container [2022-07-23 05:10:09,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 05:10:08" (2/3) ... [2022-07-23 05:10:09,462 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fb42a8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 05:10:09, skipping insertion in model container [2022-07-23 05:10:09,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 05:10:09" (3/3) ... [2022-07-23 05:10:09,464 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test6-2.i [2022-07-23 05:10:09,475 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-23 05:10:09,475 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-07-23 05:10:09,543 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-23 05:10:09,551 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2347084a, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@57e8946f [2022-07-23 05:10:09,551 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-23 05:10:09,556 INFO L276 IsEmpty]: Start isEmpty. Operand has 258 states, 234 states have (on average 1.6367521367521367) internal successors, (383), 238 states have internal predecessors, (383), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-07-23 05:10:09,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-23 05:10:09,562 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:10:09,563 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:10:09,563 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-23 05:10:09,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:10:09,568 INFO L85 PathProgramCache]: Analyzing trace with hash -720802776, now seen corresponding path program 1 times [2022-07-23 05:10:09,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 05:10:09,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617552481] [2022-07-23 05:10:09,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:10:09,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 05:10:09,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:10:09,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 05:10:09,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 05:10:09,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617552481] [2022-07-23 05:10:09,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617552481] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 05:10:09,734 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 05:10:09,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-23 05:10:09,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951073963] [2022-07-23 05:10:09,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 05:10:09,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-23 05:10:09,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 05:10:09,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-23 05:10:09,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-23 05:10:09,761 INFO L87 Difference]: Start difference. First operand has 258 states, 234 states have (on average 1.6367521367521367) internal successors, (383), 238 states have internal predecessors, (383), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2022-07-23 05:10:09,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:10:09,807 INFO L93 Difference]: Finished difference Result 511 states and 836 transitions. [2022-07-23 05:10:09,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-23 05:10:09,809 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) Word has length 8 [2022-07-23 05:10:09,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:10:09,815 INFO L225 Difference]: With dead ends: 511 [2022-07-23 05:10:09,815 INFO L226 Difference]: Without dead ends: 251 [2022-07-23 05:10:09,818 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-23 05:10:09,821 INFO L413 NwaCegarLoop]: 331 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, 331 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 [2022-07-23 05:10:09,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 331 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 05:10:09,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2022-07-23 05:10:09,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 251. [2022-07-23 05:10:09,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 228 states have (on average 1.3026315789473684) internal successors, (297), 232 states have internal predecessors, (297), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-07-23 05:10:09,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 327 transitions. [2022-07-23 05:10:09,876 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 327 transitions. Word has length 8 [2022-07-23 05:10:09,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:10:09,876 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 327 transitions. [2022-07-23 05:10:09,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2022-07-23 05:10:09,877 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 327 transitions. [2022-07-23 05:10:09,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-07-23 05:10:09,878 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:10:09,878 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:10:09,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-23 05:10:09,878 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-23 05:10:09,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:10:09,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1810590275, now seen corresponding path program 1 times [2022-07-23 05:10:09,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 05:10:09,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322997351] [2022-07-23 05:10:09,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:10:09,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 05:10:09,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:10:09,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 05:10:09,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 05:10:09,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322997351] [2022-07-23 05:10:09,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322997351] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 05:10:09,965 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 05:10:09,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-23 05:10:09,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499688554] [2022-07-23 05:10:09,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 05:10:09,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-23 05:10:09,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 05:10:09,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-23 05:10:09,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-23 05:10:09,969 INFO L87 Difference]: Start difference. First operand 251 states and 327 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2022-07-23 05:10:10,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:10:10,309 INFO L93 Difference]: Finished difference Result 547 states and 718 transitions. [2022-07-23 05:10:10,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-23 05:10:10,310 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) Word has length 10 [2022-07-23 05:10:10,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:10:10,312 INFO L225 Difference]: With dead ends: 547 [2022-07-23 05:10:10,312 INFO L226 Difference]: Without dead ends: 405 [2022-07-23 05:10:10,312 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-23 05:10:10,313 INFO L413 NwaCegarLoop]: 321 mSDtfsCounter, 179 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 869 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-23 05:10:10,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 869 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-23 05:10:10,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2022-07-23 05:10:10,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 253. [2022-07-23 05:10:10,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 230 states have (on average 1.3) internal successors, (299), 234 states have internal predecessors, (299), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-07-23 05:10:10,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 329 transitions. [2022-07-23 05:10:10,330 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 329 transitions. Word has length 10 [2022-07-23 05:10:10,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:10:10,330 INFO L495 AbstractCegarLoop]: Abstraction has 253 states and 329 transitions. [2022-07-23 05:10:10,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2022-07-23 05:10:10,330 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 329 transitions. [2022-07-23 05:10:10,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-07-23 05:10:10,340 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:10:10,340 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:10:10,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-23 05:10:10,340 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-23 05:10:10,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:10:10,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1739977374, now seen corresponding path program 1 times [2022-07-23 05:10:10,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 05:10:10,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094345586] [2022-07-23 05:10:10,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:10:10,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 05:10:10,373 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-23 05:10:10,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [701410536] [2022-07-23 05:10:10,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:10:10,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 05:10:10,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 05:10:10,376 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) [2022-07-23 05:10:10,391 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-23 05:10:10,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:10:10,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-23 05:10:10,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:10:10,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 05:10:10,633 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 05:10:10,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 05:10:10,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094345586] [2022-07-23 05:10:10,633 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-23 05:10:10,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [701410536] [2022-07-23 05:10:10,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [701410536] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 05:10:10,634 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 05:10:10,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 05:10:10,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660675342] [2022-07-23 05:10:10,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 05:10:10,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 05:10:10,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 05:10:10,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 05:10:10,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 05:10:10,635 INFO L87 Difference]: Start difference. First operand 253 states and 329 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:10:10,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:10:10,707 INFO L93 Difference]: Finished difference Result 523 states and 685 transitions. [2022-07-23 05:10:10,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 05:10:10,708 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2022-07-23 05:10:10,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:10:10,709 INFO L225 Difference]: With dead ends: 523 [2022-07-23 05:10:10,709 INFO L226 Difference]: Without dead ends: 274 [2022-07-23 05:10:10,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 05:10:10,711 INFO L413 NwaCegarLoop]: 307 mSDtfsCounter, 9 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 599 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 05:10:10,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 599 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 05:10:10,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2022-07-23 05:10:10,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 273. [2022-07-23 05:10:10,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 250 states have (on average 1.276) internal successors, (319), 254 states have internal predecessors, (319), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-07-23 05:10:10,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 349 transitions. [2022-07-23 05:10:10,731 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 349 transitions. Word has length 47 [2022-07-23 05:10:10,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:10:10,731 INFO L495 AbstractCegarLoop]: Abstraction has 273 states and 349 transitions. [2022-07-23 05:10:10,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:10:10,732 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 349 transitions. [2022-07-23 05:10:10,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-07-23 05:10:10,735 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:10:10,735 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:10:10,755 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-23 05:10:10,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 05:10:10,952 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-23 05:10:10,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:10:10,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1599428764, now seen corresponding path program 1 times [2022-07-23 05:10:10,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 05:10:10,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456367487] [2022-07-23 05:10:10,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:10:10,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 05:10:10,982 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-23 05:10:10,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1675793274] [2022-07-23 05:10:10,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:10:10,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 05:10:10,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 05:10:10,988 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) [2022-07-23 05:10:11,014 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-23 05:10:11,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:10:11,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-23 05:10:11,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:10:11,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 05:10:11,211 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 05:10:11,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 05:10:11,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456367487] [2022-07-23 05:10:11,212 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-23 05:10:11,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1675793274] [2022-07-23 05:10:11,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1675793274] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 05:10:11,212 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 05:10:11,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-23 05:10:11,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876258052] [2022-07-23 05:10:11,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 05:10:11,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-23 05:10:11,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 05:10:11,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-23 05:10:11,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-23 05:10:11,214 INFO L87 Difference]: Start difference. First operand 273 states and 349 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:10:11,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:10:11,280 INFO L93 Difference]: Finished difference Result 535 states and 687 transitions. [2022-07-23 05:10:11,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-23 05:10:11,281 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2022-07-23 05:10:11,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:10:11,282 INFO L225 Difference]: With dead ends: 535 [2022-07-23 05:10:11,282 INFO L226 Difference]: Without dead ends: 266 [2022-07-23 05:10:11,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-23 05:10:11,286 INFO L413 NwaCegarLoop]: 308 mSDtfsCounter, 264 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 650 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 05:10:11,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 650 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 05:10:11,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2022-07-23 05:10:11,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 259. [2022-07-23 05:10:11,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 236 states have (on average 1.2627118644067796) internal successors, (298), 240 states have internal predecessors, (298), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-07-23 05:10:11,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 328 transitions. [2022-07-23 05:10:11,297 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 328 transitions. Word has length 47 [2022-07-23 05:10:11,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:10:11,297 INFO L495 AbstractCegarLoop]: Abstraction has 259 states and 328 transitions. [2022-07-23 05:10:11,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:10:11,297 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 328 transitions. [2022-07-23 05:10:11,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-07-23 05:10:11,298 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:10:11,298 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:10:11,329 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-23 05:10:11,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-07-23 05:10:11,530 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-23 05:10:11,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:10:11,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1265789014, now seen corresponding path program 1 times [2022-07-23 05:10:11,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 05:10:11,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473392375] [2022-07-23 05:10:11,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:10:11,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 05:10:11,548 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-23 05:10:11,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1858615147] [2022-07-23 05:10:11,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:10:11,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 05:10:11,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 05:10:11,551 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) [2022-07-23 05:10:11,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-23 05:10:11,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:10:11,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-23 05:10:11,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:10:12,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 05:10:12,013 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 05:10:12,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 05:10:12,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473392375] [2022-07-23 05:10:12,014 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-23 05:10:12,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1858615147] [2022-07-23 05:10:12,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1858615147] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 05:10:12,014 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 05:10:12,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-23 05:10:12,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237850066] [2022-07-23 05:10:12,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 05:10:12,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-23 05:10:12,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 05:10:12,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-23 05:10:12,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-23 05:10:12,015 INFO L87 Difference]: Start difference. First operand 259 states and 328 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:10:12,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:10:12,055 INFO L93 Difference]: Finished difference Result 271 states and 340 transitions. [2022-07-23 05:10:12,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-23 05:10:12,055 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2022-07-23 05:10:12,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:10:12,056 INFO L225 Difference]: With dead ends: 271 [2022-07-23 05:10:12,056 INFO L226 Difference]: Without dead ends: 269 [2022-07-23 05:10:12,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-23 05:10:12,057 INFO L413 NwaCegarLoop]: 315 mSDtfsCounter, 13 mSDsluCounter, 1251 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1566 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 05:10:12,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1566 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 05:10:12,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2022-07-23 05:10:12,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 269. [2022-07-23 05:10:12,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 243 states have (on average 1.2592592592592593) internal successors, (306), 248 states have internal predecessors, (306), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-07-23 05:10:12,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 338 transitions. [2022-07-23 05:10:12,071 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 338 transitions. Word has length 47 [2022-07-23 05:10:12,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:10:12,072 INFO L495 AbstractCegarLoop]: Abstraction has 269 states and 338 transitions. [2022-07-23 05:10:12,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:10:12,072 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 338 transitions. [2022-07-23 05:10:12,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-07-23 05:10:12,074 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:10:12,075 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:10:12,097 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-07-23 05:10:12,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 05:10:12,295 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-23 05:10:12,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:10:12,295 INFO L85 PathProgramCache]: Analyzing trace with hash 2015855482, now seen corresponding path program 1 times [2022-07-23 05:10:12,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 05:10:12,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686271195] [2022-07-23 05:10:12,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:10:12,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 05:10:12,375 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-23 05:10:12,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1577204782] [2022-07-23 05:10:12,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:10:12,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 05:10:12,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 05:10:12,380 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) [2022-07-23 05:10:12,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-23 05:10:12,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:10:12,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 1597 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-23 05:10:12,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:10:12,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 05:10:12,850 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 05:10:12,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 05:10:12,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686271195] [2022-07-23 05:10:12,850 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-23 05:10:12,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1577204782] [2022-07-23 05:10:12,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1577204782] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 05:10:12,851 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 05:10:12,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 05:10:12,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265302943] [2022-07-23 05:10:12,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 05:10:12,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 05:10:12,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 05:10:12,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 05:10:12,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 05:10:12,852 INFO L87 Difference]: Start difference. First operand 269 states and 338 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:10:12,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:10:12,868 INFO L93 Difference]: Finished difference Result 535 states and 674 transitions. [2022-07-23 05:10:12,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 05:10:12,869 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-07-23 05:10:12,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:10:12,870 INFO L225 Difference]: With dead ends: 535 [2022-07-23 05:10:12,870 INFO L226 Difference]: Without dead ends: 270 [2022-07-23 05:10:12,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 05:10:12,871 INFO L413 NwaCegarLoop]: 319 mSDtfsCounter, 0 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 633 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 05:10:12,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 633 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 05:10:12,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2022-07-23 05:10:12,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 270. [2022-07-23 05:10:12,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 244 states have (on average 1.2581967213114753) internal successors, (307), 249 states have internal predecessors, (307), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-07-23 05:10:12,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 339 transitions. [2022-07-23 05:10:12,878 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 339 transitions. Word has length 58 [2022-07-23 05:10:12,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:10:12,878 INFO L495 AbstractCegarLoop]: Abstraction has 270 states and 339 transitions. [2022-07-23 05:10:12,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:10:12,879 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 339 transitions. [2022-07-23 05:10:12,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-07-23 05:10:12,879 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:10:12,880 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:10:12,899 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-23 05:10:13,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 05:10:13,091 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-23 05:10:13,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:10:13,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1886084804, now seen corresponding path program 1 times [2022-07-23 05:10:13,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 05:10:13,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022650562] [2022-07-23 05:10:13,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:10:13,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 05:10:13,163 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-23 05:10:13,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1805116004] [2022-07-23 05:10:13,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:10:13,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 05:10:13,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 05:10:13,165 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) [2022-07-23 05:10:13,166 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-23 05:10:13,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:10:13,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 1604 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-23 05:10:13,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:10:13,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 05:10:13,838 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 05:10:13,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 05:10:13,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022650562] [2022-07-23 05:10:13,838 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-23 05:10:13,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1805116004] [2022-07-23 05:10:13,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1805116004] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 05:10:13,839 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 05:10:13,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 05:10:13,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699771323] [2022-07-23 05:10:13,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 05:10:13,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 05:10:13,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 05:10:13,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 05:10:13,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 05:10:13,840 INFO L87 Difference]: Start difference. First operand 270 states and 339 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:10:13,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:10:13,932 INFO L93 Difference]: Finished difference Result 690 states and 873 transitions. [2022-07-23 05:10:13,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 05:10:13,933 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-07-23 05:10:13,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:10:13,934 INFO L225 Difference]: With dead ends: 690 [2022-07-23 05:10:13,934 INFO L226 Difference]: Without dead ends: 424 [2022-07-23 05:10:13,935 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 05:10:13,935 INFO L413 NwaCegarLoop]: 364 mSDtfsCounter, 143 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 636 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 05:10:13,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 636 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 05:10:13,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2022-07-23 05:10:13,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 385. [2022-07-23 05:10:13,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 356 states have (on average 1.2556179775280898) internal successors, (447), 361 states have internal predecessors, (447), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2022-07-23 05:10:13,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 485 transitions. [2022-07-23 05:10:13,944 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 485 transitions. Word has length 58 [2022-07-23 05:10:13,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:10:13,944 INFO L495 AbstractCegarLoop]: Abstraction has 385 states and 485 transitions. [2022-07-23 05:10:13,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:10:13,945 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 485 transitions. [2022-07-23 05:10:13,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-23 05:10:13,945 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:10:13,945 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:10:13,965 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-07-23 05:10:14,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 05:10:14,160 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-23 05:10:14,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:10:14,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1360052348, now seen corresponding path program 1 times [2022-07-23 05:10:14,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 05:10:14,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62067879] [2022-07-23 05:10:14,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:10:14,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 05:10:14,188 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-23 05:10:14,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [393019273] [2022-07-23 05:10:14,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:10:14,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 05:10:14,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 05:10:14,190 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) [2022-07-23 05:10:14,191 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-23 05:10:14,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:10:14,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 509 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-23 05:10:14,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:10:14,637 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 05:10:14,637 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 05:10:14,724 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 05:10:14,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 05:10:14,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62067879] [2022-07-23 05:10:14,725 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-23 05:10:14,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [393019273] [2022-07-23 05:10:14,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [393019273] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-23 05:10:14,725 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-23 05:10:14,726 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 9 [2022-07-23 05:10:14,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985103236] [2022-07-23 05:10:14,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 05:10:14,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-23 05:10:14,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 05:10:14,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-23 05:10:14,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-23 05:10:14,727 INFO L87 Difference]: Start difference. First operand 385 states and 485 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 6 states have internal predecessors, (56), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-23 05:10:14,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:10:14,839 INFO L93 Difference]: Finished difference Result 1424 states and 1846 transitions. [2022-07-23 05:10:14,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-23 05:10:14,840 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 6 states have internal predecessors, (56), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 62 [2022-07-23 05:10:14,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:10:14,844 INFO L225 Difference]: With dead ends: 1424 [2022-07-23 05:10:14,845 INFO L226 Difference]: Without dead ends: 1088 [2022-07-23 05:10:14,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 114 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-23 05:10:14,846 INFO L413 NwaCegarLoop]: 395 mSDtfsCounter, 1280 mSDsluCounter, 858 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1280 SdHoareTripleChecker+Valid, 1253 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 05:10:14,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1280 Valid, 1253 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 05:10:14,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1088 states. [2022-07-23 05:10:14,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1088 to 659. [2022-07-23 05:10:14,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 659 states, 617 states have (on average 1.2690437601296596) internal successors, (783), 623 states have internal predecessors, (783), 28 states have call successors, (28), 10 states have call predecessors, (28), 10 states have return successors, (29), 25 states have call predecessors, (29), 28 states have call successors, (29) [2022-07-23 05:10:14,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 840 transitions. [2022-07-23 05:10:14,865 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 840 transitions. Word has length 62 [2022-07-23 05:10:14,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:10:14,865 INFO L495 AbstractCegarLoop]: Abstraction has 659 states and 840 transitions. [2022-07-23 05:10:14,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 6 states have internal predecessors, (56), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-23 05:10:14,866 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 840 transitions. [2022-07-23 05:10:14,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-23 05:10:14,866 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:10:14,867 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:10:14,889 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-23 05:10:15,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 05:10:15,080 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-23 05:10:15,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:10:15,080 INFO L85 PathProgramCache]: Analyzing trace with hash 643772401, now seen corresponding path program 1 times [2022-07-23 05:10:15,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 05:10:15,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909874464] [2022-07-23 05:10:15,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:10:15,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 05:10:15,114 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-23 05:10:15,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1652118350] [2022-07-23 05:10:15,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:10:15,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 05:10:15,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 05:10:15,116 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) [2022-07-23 05:10:15,117 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-23 05:10:15,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:10:15,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 773 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-23 05:10:15,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:10:15,582 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-23 05:10:15,582 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 05:10:15,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 05:10:15,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909874464] [2022-07-23 05:10:15,582 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-23 05:10:15,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1652118350] [2022-07-23 05:10:15,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1652118350] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 05:10:15,583 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 05:10:15,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-23 05:10:15,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124452834] [2022-07-23 05:10:15,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 05:10:15,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-23 05:10:15,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 05:10:15,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-23 05:10:15,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-23 05:10:15,584 INFO L87 Difference]: Start difference. First operand 659 states and 840 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-23 05:10:15,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:10:15,663 INFO L93 Difference]: Finished difference Result 1250 states and 1604 transitions. [2022-07-23 05:10:15,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-23 05:10:15,664 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 93 [2022-07-23 05:10:15,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:10:15,666 INFO L225 Difference]: With dead ends: 1250 [2022-07-23 05:10:15,666 INFO L226 Difference]: Without dead ends: 659 [2022-07-23 05:10:15,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-23 05:10:15,668 INFO L413 NwaCegarLoop]: 315 mSDtfsCounter, 25 mSDsluCounter, 853 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 1168 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 05:10:15,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 1168 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 05:10:15,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2022-07-23 05:10:15,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 659. [2022-07-23 05:10:15,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 659 states, 617 states have (on average 1.2690437601296596) internal successors, (783), 623 states have internal predecessors, (783), 28 states have call successors, (28), 10 states have call predecessors, (28), 10 states have return successors, (28), 25 states have call predecessors, (28), 28 states have call successors, (28) [2022-07-23 05:10:15,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 839 transitions. [2022-07-23 05:10:15,684 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 839 transitions. Word has length 93 [2022-07-23 05:10:15,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:10:15,684 INFO L495 AbstractCegarLoop]: Abstraction has 659 states and 839 transitions. [2022-07-23 05:10:15,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-23 05:10:15,684 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 839 transitions. [2022-07-23 05:10:15,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-07-23 05:10:15,685 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:10:15,685 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:10:15,708 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-07-23 05:10:15,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 05:10:15,908 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-23 05:10:15,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:10:15,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1976180910, now seen corresponding path program 1 times [2022-07-23 05:10:15,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 05:10:15,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922175997] [2022-07-23 05:10:15,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:10:15,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 05:10:15,954 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-23 05:10:15,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1221049025] [2022-07-23 05:10:15,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:10:15,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 05:10:15,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 05:10:15,956 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) [2022-07-23 05:10:15,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-23 05:10:16,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:10:16,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 783 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-23 05:10:16,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:10:16,416 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-23 05:10:16,424 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-07-23 05:10:16,428 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-23 05:10:16,429 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 05:10:16,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 05:10:16,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922175997] [2022-07-23 05:10:16,429 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-23 05:10:16,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1221049025] [2022-07-23 05:10:16,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1221049025] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 05:10:16,429 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 05:10:16,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-23 05:10:16,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525360717] [2022-07-23 05:10:16,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 05:10:16,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-23 05:10:16,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 05:10:16,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-23 05:10:16,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-23 05:10:16,431 INFO L87 Difference]: Start difference. First operand 659 states and 839 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-23 05:10:16,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:10:16,639 INFO L93 Difference]: Finished difference Result 949 states and 1227 transitions. [2022-07-23 05:10:16,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-23 05:10:16,640 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 98 [2022-07-23 05:10:16,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:10:16,643 INFO L225 Difference]: With dead ends: 949 [2022-07-23 05:10:16,643 INFO L226 Difference]: Without dead ends: 852 [2022-07-23 05:10:16,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-23 05:10:16,644 INFO L413 NwaCegarLoop]: 309 mSDtfsCounter, 107 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 848 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-23 05:10:16,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 848 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-23 05:10:16,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 852 states. [2022-07-23 05:10:16,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 852 to 663. [2022-07-23 05:10:16,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 663 states, 621 states have (on average 1.2673107890499196) internal successors, (787), 627 states have internal predecessors, (787), 28 states have call successors, (28), 10 states have call predecessors, (28), 10 states have return successors, (28), 25 states have call predecessors, (28), 28 states have call successors, (28) [2022-07-23 05:10:16,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663 states to 663 states and 843 transitions. [2022-07-23 05:10:16,662 INFO L78 Accepts]: Start accepts. Automaton has 663 states and 843 transitions. Word has length 98 [2022-07-23 05:10:16,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:10:16,662 INFO L495 AbstractCegarLoop]: Abstraction has 663 states and 843 transitions. [2022-07-23 05:10:16,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-23 05:10:16,663 INFO L276 IsEmpty]: Start isEmpty. Operand 663 states and 843 transitions. [2022-07-23 05:10:16,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-07-23 05:10:16,663 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:10:16,664 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:10:16,685 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-23 05:10:16,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-23 05:10:16,874 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-23 05:10:16,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:10:16,874 INFO L85 PathProgramCache]: Analyzing trace with hash -553663886, now seen corresponding path program 1 times [2022-07-23 05:10:16,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 05:10:16,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045883432] [2022-07-23 05:10:16,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:10:16,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 05:10:16,908 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-23 05:10:16,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1617853698] [2022-07-23 05:10:16,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:10:16,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 05:10:16,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 05:10:16,910 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) [2022-07-23 05:10:16,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-23 05:10:17,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:10:17,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 990 conjuncts, 20 conjunts are in the unsatisfiable core [2022-07-23 05:10:17,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:10:17,521 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-23 05:10:17,522 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 05:10:17,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 05:10:17,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045883432] [2022-07-23 05:10:17,522 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-23 05:10:17,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1617853698] [2022-07-23 05:10:17,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1617853698] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 05:10:17,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 05:10:17,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-23 05:10:17,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612289079] [2022-07-23 05:10:17,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 05:10:17,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-23 05:10:17,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 05:10:17,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-23 05:10:17,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-23 05:10:17,525 INFO L87 Difference]: Start difference. First operand 663 states and 843 transitions. Second operand has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-23 05:10:17,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:10:17,635 INFO L93 Difference]: Finished difference Result 1266 states and 1623 transitions. [2022-07-23 05:10:17,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-23 05:10:17,636 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 110 [2022-07-23 05:10:17,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:10:17,639 INFO L225 Difference]: With dead ends: 1266 [2022-07-23 05:10:17,639 INFO L226 Difference]: Without dead ends: 668 [2022-07-23 05:10:17,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-07-23 05:10:17,641 INFO L413 NwaCegarLoop]: 305 mSDtfsCounter, 18 mSDsluCounter, 1798 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 2103 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 05:10:17,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 2103 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 05:10:17,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2022-07-23 05:10:17,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 668. [2022-07-23 05:10:17,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 668 states, 625 states have (on average 1.2672) internal successors, (792), 632 states have internal predecessors, (792), 28 states have call successors, (28), 10 states have call predecessors, (28), 11 states have return successors, (29), 25 states have call predecessors, (29), 28 states have call successors, (29) [2022-07-23 05:10:17,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 668 states to 668 states and 849 transitions. [2022-07-23 05:10:17,665 INFO L78 Accepts]: Start accepts. Automaton has 668 states and 849 transitions. Word has length 110 [2022-07-23 05:10:17,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:10:17,665 INFO L495 AbstractCegarLoop]: Abstraction has 668 states and 849 transitions. [2022-07-23 05:10:17,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-23 05:10:17,665 INFO L276 IsEmpty]: Start isEmpty. Operand 668 states and 849 transitions. [2022-07-23 05:10:17,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-23 05:10:17,667 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:10:17,667 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:10:17,690 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-23 05:10:17,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 05:10:17,884 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-23 05:10:17,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:10:17,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1849320704, now seen corresponding path program 1 times [2022-07-23 05:10:17,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 05:10:17,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271817265] [2022-07-23 05:10:17,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:10:17,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 05:10:17,927 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-23 05:10:17,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1344992659] [2022-07-23 05:10:17,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:10:17,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 05:10:17,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 05:10:17,936 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) [2022-07-23 05:10:17,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-23 05:10:19,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:10:19,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 1020 conjuncts, 20 conjunts are in the unsatisfiable core [2022-07-23 05:10:19,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:10:19,117 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-23 05:10:19,117 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 05:10:19,233 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-23 05:10:19,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 05:10:19,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271817265] [2022-07-23 05:10:19,234 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-23 05:10:19,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344992659] [2022-07-23 05:10:19,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1344992659] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 05:10:19,234 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 05:10:19,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 12 [2022-07-23 05:10:19,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155142994] [2022-07-23 05:10:19,234 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 05:10:19,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-23 05:10:19,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 05:10:19,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-23 05:10:19,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-07-23 05:10:19,236 INFO L87 Difference]: Start difference. First operand 668 states and 849 transitions. Second operand has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 states have internal predecessors, (107), 3 states have call successors, (13), 2 states have call predecessors, (13), 6 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-23 05:10:19,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:10:19,469 INFO L93 Difference]: Finished difference Result 1289 states and 1655 transitions. [2022-07-23 05:10:19,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-23 05:10:19,470 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 states have internal predecessors, (107), 3 states have call successors, (13), 2 states have call predecessors, (13), 6 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 112 [2022-07-23 05:10:19,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:10:19,472 INFO L225 Difference]: With dead ends: 1289 [2022-07-23 05:10:19,472 INFO L226 Difference]: Without dead ends: 684 [2022-07-23 05:10:19,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2022-07-23 05:10:19,474 INFO L413 NwaCegarLoop]: 306 mSDtfsCounter, 32 mSDsluCounter, 2699 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 3005 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 05:10:19,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 3005 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 05:10:19,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2022-07-23 05:10:19,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 681. [2022-07-23 05:10:19,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 681 states, 637 states have (on average 1.271585557299843) internal successors, (810), 644 states have internal predecessors, (810), 28 states have call successors, (28), 11 states have call predecessors, (28), 12 states have return successors, (29), 25 states have call predecessors, (29), 28 states have call successors, (29) [2022-07-23 05:10:19,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 681 states to 681 states and 867 transitions. [2022-07-23 05:10:19,514 INFO L78 Accepts]: Start accepts. Automaton has 681 states and 867 transitions. Word has length 112 [2022-07-23 05:10:19,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:10:19,515 INFO L495 AbstractCegarLoop]: Abstraction has 681 states and 867 transitions. [2022-07-23 05:10:19,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 states have internal predecessors, (107), 3 states have call successors, (13), 2 states have call predecessors, (13), 6 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-23 05:10:19,515 INFO L276 IsEmpty]: Start isEmpty. Operand 681 states and 867 transitions. [2022-07-23 05:10:19,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-07-23 05:10:19,517 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:10:19,518 INFO L195 NwaCegarLoop]: trace histogram [6, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:10:19,551 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-23 05:10:19,727 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,SelfDestructingSolverStorable11 [2022-07-23 05:10:19,727 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-23 05:10:19,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:10:19,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1577750638, now seen corresponding path program 2 times [2022-07-23 05:10:19,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 05:10:19,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429875142] [2022-07-23 05:10:19,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:10:19,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 05:10:19,763 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-23 05:10:19,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1235570834] [2022-07-23 05:10:19,764 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-23 05:10:19,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 05:10:19,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 05:10:19,765 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 05:10:19,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-23 05:10:50,772 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-23 05:10:50,772 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 05:10:50,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 1080 conjuncts, 29 conjunts are in the unsatisfiable core [2022-07-23 05:10:50,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:10:50,916 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 38 proven. 10 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-23 05:10:50,917 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 05:10:51,108 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-07-23 05:10:51,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 05:10:51,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429875142] [2022-07-23 05:10:51,109 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-23 05:10:51,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1235570834] [2022-07-23 05:10:51,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1235570834] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 05:10:51,109 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 05:10:51,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8] total 19 [2022-07-23 05:10:51,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348357315] [2022-07-23 05:10:51,109 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 05:10:51,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-23 05:10:51,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 05:10:51,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-23 05:10:51,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2022-07-23 05:10:51,111 INFO L87 Difference]: Start difference. First operand 681 states and 867 transitions. Second operand has 19 states, 19 states have (on average 6.052631578947368) internal successors, (115), 19 states have internal predecessors, (115), 3 states have call successors, (13), 2 states have call predecessors, (13), 6 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-23 05:10:52,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:10:52,074 INFO L93 Difference]: Finished difference Result 1382 states and 1772 transitions. [2022-07-23 05:10:52,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-07-23 05:10:52,074 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 6.052631578947368) internal successors, (115), 19 states have internal predecessors, (115), 3 states have call successors, (13), 2 states have call predecessors, (13), 6 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 116 [2022-07-23 05:10:52,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:10:52,077 INFO L225 Difference]: With dead ends: 1382 [2022-07-23 05:10:52,077 INFO L226 Difference]: Without dead ends: 699 [2022-07-23 05:10:52,078 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=275, Invalid=915, Unknown=0, NotChecked=0, Total=1190 [2022-07-23 05:10:52,079 INFO L413 NwaCegarLoop]: 304 mSDtfsCounter, 336 mSDsluCounter, 3026 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 3330 SdHoareTripleChecker+Invalid, 623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-23 05:10:52,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 3330 Invalid, 623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 574 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-23 05:10:52,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2022-07-23 05:10:52,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 687. [2022-07-23 05:10:52,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 687 states, 643 states have (on average 1.2690513219284603) internal successors, (816), 650 states have internal predecessors, (816), 28 states have call successors, (28), 11 states have call predecessors, (28), 12 states have return successors, (29), 25 states have call predecessors, (29), 28 states have call successors, (29) [2022-07-23 05:10:52,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 873 transitions. [2022-07-23 05:10:52,097 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 873 transitions. Word has length 116 [2022-07-23 05:10:52,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:10:52,097 INFO L495 AbstractCegarLoop]: Abstraction has 687 states and 873 transitions. [2022-07-23 05:10:52,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 6.052631578947368) internal successors, (115), 19 states have internal predecessors, (115), 3 states have call successors, (13), 2 states have call predecessors, (13), 6 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-23 05:10:52,097 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 873 transitions. [2022-07-23 05:10:52,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-07-23 05:10:52,099 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:10:52,099 INFO L195 NwaCegarLoop]: trace histogram [15, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:10:52,141 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-23 05:10:52,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-07-23 05:10:52,319 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-23 05:10:52,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:10:52,320 INFO L85 PathProgramCache]: Analyzing trace with hash -101405335, now seen corresponding path program 3 times [2022-07-23 05:10:52,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 05:10:52,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241930604] [2022-07-23 05:10:52,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:10:52,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 05:10:52,357 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-23 05:10:52,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1035275459] [2022-07-23 05:10:52,358 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-23 05:10:52,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 05:10:52,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 05:10:52,359 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 05:10:52,361 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process