./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test2-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c36dfa3b 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_BER_test2-2.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 5b41ff920513b74db566933dfdd7430dbdb0b5764645b98d18d29abf93fb4135 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-c36dfa3 [2021-11-04 14:34:26,284 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-04 14:34:26,286 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-04 14:34:26,324 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-04 14:34:26,325 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-04 14:34:26,334 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-04 14:34:26,336 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-04 14:34:26,341 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-04 14:34:26,342 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-04 14:34:26,346 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-04 14:34:26,347 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-04 14:34:26,348 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-04 14:34:26,348 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-04 14:34:26,350 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-04 14:34:26,352 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-04 14:34:26,356 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-04 14:34:26,357 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-04 14:34:26,357 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-04 14:34:26,361 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-04 14:34:26,366 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-04 14:34:26,367 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-04 14:34:26,368 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-04 14:34:26,369 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-04 14:34:26,370 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-04 14:34:26,375 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-04 14:34:26,375 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-04 14:34:26,376 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-04 14:34:26,377 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-04 14:34:26,377 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-04 14:34:26,378 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-04 14:34:26,378 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-04 14:34:26,381 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-04 14:34:26,382 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-04 14:34:26,383 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-04 14:34:26,385 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-04 14:34:26,385 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-04 14:34:26,386 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-04 14:34:26,386 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-04 14:34:26,386 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-04 14:34:26,387 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-04 14:34:26,387 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-04 14:34:26,389 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-04 14:34:26,421 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-04 14:34:26,424 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-04 14:34:26,424 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-04 14:34:26,424 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-04 14:34:26,425 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-04 14:34:26,426 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-04 14:34:26,426 INFO L138 SettingsManager]: * Use SBE=true [2021-11-04 14:34:26,426 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-04 14:34:26,426 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-04 14:34:26,426 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-04 14:34:26,427 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-04 14:34:26,427 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-04 14:34:26,427 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-04 14:34:26,428 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-04 14:34:26,428 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-04 14:34:26,428 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-04 14:34:26,428 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-04 14:34:26,428 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-04 14:34:26,428 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-04 14:34:26,429 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-04 14:34:26,429 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-04 14:34:26,429 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-04 14:34:26,429 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 14:34:26,429 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-04 14:34:26,430 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-04 14:34:26,430 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-04 14:34:26,430 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-04 14:34:26,431 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-04 14:34:26,431 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-04 14:34:26,431 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-04 14:34:26,431 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-04 14:34:26,432 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-04 14:34:26,432 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5b41ff920513b74db566933dfdd7430dbdb0b5764645b98d18d29abf93fb4135 [2021-11-04 14:34:26,672 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-04 14:34:26,694 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-04 14:34:26,696 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-04 14:34:26,697 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-04 14:34:26,698 INFO L275 PluginConnector]: CDTParser initialized [2021-11-04 14:34:26,699 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test2-2.i [2021-11-04 14:34:26,757 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90fbd1bed/82c1d5f4877b4c2c9ff6762d4afc6a9a/FLAGc5b885aad [2021-11-04 14:34:27,296 INFO L306 CDTParser]: Found 1 translation units. [2021-11-04 14:34:27,297 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test2-2.i [2021-11-04 14:34:27,317 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90fbd1bed/82c1d5f4877b4c2c9ff6762d4afc6a9a/FLAGc5b885aad [2021-11-04 14:34:27,727 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90fbd1bed/82c1d5f4877b4c2c9ff6762d4afc6a9a [2021-11-04 14:34:27,729 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-04 14:34:27,730 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-04 14:34:27,732 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-04 14:34:27,732 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-04 14:34:27,735 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-04 14:34:27,735 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 02:34:27" (1/1) ... [2021-11-04 14:34:27,736 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b6effcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 02:34:27, skipping insertion in model container [2021-11-04 14:34:27,736 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 02:34:27" (1/1) ... [2021-11-04 14:34:27,741 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-04 14:34:27,782 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-04 14:34:28,074 WARN L228 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_BER_test2-2.i[37019,37032] [2021-11-04 14:34:28,160 WARN L228 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_BER_test2-2.i[47352,47365] [2021-11-04 14:34:28,180 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 14:34:28,194 INFO L203 MainTranslator]: Completed pre-run [2021-11-04 14:34:28,217 WARN L228 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_BER_test2-2.i[37019,37032] [2021-11-04 14:34:28,261 WARN L228 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_BER_test2-2.i[47352,47365] [2021-11-04 14:34:28,270 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 14:34:28,303 INFO L208 MainTranslator]: Completed translation [2021-11-04 14:34:28,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 02:34:28 WrapperNode [2021-11-04 14:34:28,304 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-04 14:34:28,305 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-04 14:34:28,305 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-04 14:34:28,305 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-04 14:34:28,312 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 02:34:28" (1/1) ... [2021-11-04 14:34:28,364 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 02:34:28" (1/1) ... [2021-11-04 14:34:28,452 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-04 14:34:28,452 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-04 14:34:28,453 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-04 14:34:28,453 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-04 14:34:28,460 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 02:34:28" (1/1) ... [2021-11-04 14:34:28,460 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 02:34:28" (1/1) ... [2021-11-04 14:34:28,475 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 02:34:28" (1/1) ... [2021-11-04 14:34:28,476 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 02:34:28" (1/1) ... [2021-11-04 14:34:28,512 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 02:34:28" (1/1) ... [2021-11-04 14:34:28,521 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 02:34:28" (1/1) ... [2021-11-04 14:34:28,524 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 02:34:28" (1/1) ... [2021-11-04 14:34:28,530 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-04 14:34:28,531 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-04 14:34:28,532 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-04 14:34:28,532 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-04 14:34:28,533 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 02:34:28" (1/1) ... [2021-11-04 14:34:28,540 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 14:34:28,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 14:34:28,559 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) [2021-11-04 14:34:28,572 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 [2021-11-04 14:34:28,603 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-04 14:34:28,604 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-04 14:34:28,604 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-04 14:34:28,604 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-04 14:34:28,604 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-04 14:34:28,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-04 14:34:28,604 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-04 14:34:28,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-04 14:34:28,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-04 14:34:28,605 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-04 14:34:28,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-04 14:34:29,316 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-04 14:34:29,317 INFO L299 CfgBuilder]: Removed 85 assume(true) statements. [2021-11-04 14:34:29,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 02:34:29 BoogieIcfgContainer [2021-11-04 14:34:29,319 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-04 14:34:29,322 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-04 14:34:29,322 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-04 14:34:29,325 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-04 14:34:29,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.11 02:34:27" (1/3) ... [2021-11-04 14:34:29,326 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b0e23a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 02:34:29, skipping insertion in model container [2021-11-04 14:34:29,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 02:34:28" (2/3) ... [2021-11-04 14:34:29,327 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b0e23a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 02:34:29, skipping insertion in model container [2021-11-04 14:34:29,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 02:34:29" (3/3) ... [2021-11-04 14:34:29,329 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_BER_test2-2.i [2021-11-04 14:34:29,335 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-04 14:34:29,335 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-04 14:34:29,372 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-04 14:34:29,378 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-04 14:34:29,379 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-04 14:34:29,409 INFO L276 IsEmpty]: Start isEmpty. Operand has 206 states, 199 states have (on average 1.7185929648241205) internal successors, (342), 205 states have internal predecessors, (342), 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) [2021-11-04 14:34:29,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-04 14:34:29,416 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 14:34:29,417 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 14:34:29,417 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-04 14:34:29,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 14:34:29,421 INFO L85 PathProgramCache]: Analyzing trace with hash 239231399, now seen corresponding path program 1 times [2021-11-04 14:34:29,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 14:34:29,426 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567489052] [2021-11-04 14:34:29,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:34:29,427 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 14:34:29,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 14:34:29,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 14:34:29,591 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 14:34:29,591 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567489052] [2021-11-04 14:34:29,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567489052] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 14:34:29,592 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 14:34:29,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 14:34:29,594 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432271754] [2021-11-04 14:34:29,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 14:34:29,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-04 14:34:29,598 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 14:34:29,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-04 14:34:29,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-04 14:34:29,626 INFO L87 Difference]: Start difference. First operand has 206 states, 199 states have (on average 1.7185929648241205) internal successors, (342), 205 states have internal predecessors, (342), 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) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2021-11-04 14:34:30,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 14:34:30,083 INFO L93 Difference]: Finished difference Result 410 states and 682 transitions. [2021-11-04 14:34:30,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-04 14:34:30,086 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2021-11-04 14:34:30,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 14:34:30,095 INFO L225 Difference]: With dead ends: 410 [2021-11-04 14:34:30,096 INFO L226 Difference]: Without dead ends: 173 [2021-11-04 14:34:30,098 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-04 14:34:30,102 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 334.16ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.52ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 421.19ms IncrementalHoareTripleChecker+Time [2021-11-04 14:34:30,103 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 269 Unknown, 0 Unchecked, 1.52ms Time], IncrementalHoareTripleChecker [0 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 421.19ms Time] [2021-11-04 14:34:30,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-11-04 14:34:30,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2021-11-04 14:34:30,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 167 states have (on average 1.347305389221557) internal successors, (225), 172 states have internal predecessors, (225), 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) [2021-11-04 14:34:30,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 225 transitions. [2021-11-04 14:34:30,157 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 225 transitions. Word has length 9 [2021-11-04 14:34:30,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 14:34:30,157 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 225 transitions. [2021-11-04 14:34:30,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2021-11-04 14:34:30,158 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 225 transitions. [2021-11-04 14:34:30,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-04 14:34:30,160 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 14:34:30,160 INFO L514 BasicCegarLoop]: 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] [2021-11-04 14:34:30,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-04 14:34:30,161 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-04 14:34:30,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 14:34:30,164 INFO L85 PathProgramCache]: Analyzing trace with hash 627334177, now seen corresponding path program 1 times [2021-11-04 14:34:30,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 14:34:30,164 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298389668] [2021-11-04 14:34:30,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:34:30,165 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 14:34:30,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 14:34:30,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 14:34:30,277 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 14:34:30,278 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298389668] [2021-11-04 14:34:30,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298389668] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 14:34:30,278 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 14:34:30,278 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 14:34:30,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049032737] [2021-11-04 14:34:30,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 14:34:30,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 14:34:30,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 14:34:30,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 14:34:30,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 14:34:30,283 INFO L87 Difference]: Start difference. First operand 173 states and 225 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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) [2021-11-04 14:34:31,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 14:34:31,022 INFO L93 Difference]: Finished difference Result 377 states and 490 transitions. [2021-11-04 14:34:31,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-04 14:34:31,023 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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 44 [2021-11-04 14:34:31,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 14:34:31,025 INFO L225 Difference]: With dead ends: 377 [2021-11-04 14:34:31,025 INFO L226 Difference]: Without dead ends: 294 [2021-11-04 14:34:31,026 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.38ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 14:34:31,027 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 153 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 673 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 583.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.41ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 673 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 703.79ms IncrementalHoareTripleChecker+Time [2021-11-04 14:34:31,027 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [153 Valid, 0 Invalid, 676 Unknown, 0 Unchecked, 4.41ms Time], IncrementalHoareTripleChecker [3 Valid, 673 Invalid, 0 Unknown, 0 Unchecked, 703.79ms Time] [2021-11-04 14:34:31,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2021-11-04 14:34:31,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 175. [2021-11-04 14:34:31,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 169 states have (on average 1.3431952662721893) internal successors, (227), 174 states have internal predecessors, (227), 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) [2021-11-04 14:34:31,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 227 transitions. [2021-11-04 14:34:31,045 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 227 transitions. Word has length 44 [2021-11-04 14:34:31,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 14:34:31,046 INFO L470 AbstractCegarLoop]: Abstraction has 175 states and 227 transitions. [2021-11-04 14:34:31,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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) [2021-11-04 14:34:31,047 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 227 transitions. [2021-11-04 14:34:31,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-04 14:34:31,057 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 14:34:31,057 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 14:34:31,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-04 14:34:31,058 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-04 14:34:31,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 14:34:31,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1103505073, now seen corresponding path program 1 times [2021-11-04 14:34:31,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 14:34:31,060 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644114281] [2021-11-04 14:34:31,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:34:31,061 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 14:34:31,080 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 14:34:31,080 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [375610843] [2021-11-04 14:34:31,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:34:31,081 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 14:34:31,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 14:34:31,083 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) [2021-11-04 14:34:31,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-04 14:34:31,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 14:34:31,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-04 14:34:31,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 14:34:31,547 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 14:34:31,548 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 14:34:31,548 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 14:34:31,549 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644114281] [2021-11-04 14:34:31,549 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 14:34:31,549 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [375610843] [2021-11-04 14:34:31,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [375610843] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 14:34:31,551 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 14:34:31,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 14:34:31,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037853664] [2021-11-04 14:34:31,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 14:34:31,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 14:34:31,552 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 14:34:31,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 14:34:31,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 14:34:31,556 INFO L87 Difference]: Start difference. First operand 175 states and 227 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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) [2021-11-04 14:34:31,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 14:34:31,954 INFO L93 Difference]: Finished difference Result 367 states and 481 transitions. [2021-11-04 14:34:31,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 14:34:31,955 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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 96 [2021-11-04 14:34:31,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 14:34:31,956 INFO L225 Difference]: With dead ends: 367 [2021-11-04 14:34:31,956 INFO L226 Difference]: Without dead ends: 196 [2021-11-04 14:34:31,957 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.99ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 14:34:31,958 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 9 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 324.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.33ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 388.13ms IncrementalHoareTripleChecker+Time [2021-11-04 14:34:31,959 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 0 Invalid, 467 Unknown, 0 Unchecked, 1.33ms Time], IncrementalHoareTripleChecker [28 Valid, 439 Invalid, 0 Unknown, 0 Unchecked, 388.13ms Time] [2021-11-04 14:34:31,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2021-11-04 14:34:31,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 195. [2021-11-04 14:34:31,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 189 states have (on average 1.306878306878307) internal successors, (247), 194 states have internal predecessors, (247), 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) [2021-11-04 14:34:31,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 247 transitions. [2021-11-04 14:34:31,973 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 247 transitions. Word has length 96 [2021-11-04 14:34:31,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 14:34:31,973 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 247 transitions. [2021-11-04 14:34:31,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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) [2021-11-04 14:34:31,974 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 247 transitions. [2021-11-04 14:34:31,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-04 14:34:31,975 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 14:34:31,980 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 14:34:32,009 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-04 14:34:32,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 14:34:32,193 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-04 14:34:32,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 14:34:32,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1343744819, now seen corresponding path program 1 times [2021-11-04 14:34:32,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 14:34:32,194 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439076461] [2021-11-04 14:34:32,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:34:32,194 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 14:34:32,217 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 14:34:32,225 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [588818397] [2021-11-04 14:34:32,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:34:32,226 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 14:34:32,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 14:34:32,227 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) [2021-11-04 14:34:32,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-04 14:34:32,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 14:34:32,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-04 14:34:32,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 14:34:32,552 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-04 14:34:32,552 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 14:34:32,553 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 14:34:32,553 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439076461] [2021-11-04 14:34:32,553 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 14:34:32,553 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588818397] [2021-11-04 14:34:32,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [588818397] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 14:34:32,553 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 14:34:32,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 14:34:32,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795111069] [2021-11-04 14:34:32,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 14:34:32,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 14:34:32,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 14:34:32,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 14:34:32,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 14:34:32,556 INFO L87 Difference]: Start difference. First operand 195 states and 247 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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) [2021-11-04 14:34:32,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 14:34:32,944 INFO L93 Difference]: Finished difference Result 298 states and 384 transitions. [2021-11-04 14:34:32,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 14:34:32,944 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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 96 [2021-11-04 14:34:32,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 14:34:32,945 INFO L225 Difference]: With dead ends: 298 [2021-11-04 14:34:32,945 INFO L226 Difference]: Without dead ends: 216 [2021-11-04 14:34:32,946 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.48ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 14:34:32,947 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 9 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 316.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.32ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 378.20ms IncrementalHoareTripleChecker+Time [2021-11-04 14:34:32,947 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 0 Invalid, 467 Unknown, 0 Unchecked, 1.32ms Time], IncrementalHoareTripleChecker [28 Valid, 439 Invalid, 0 Unknown, 0 Unchecked, 378.20ms Time] [2021-11-04 14:34:32,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-11-04 14:34:32,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 215. [2021-11-04 14:34:32,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 209 states have (on average 1.277511961722488) internal successors, (267), 214 states have internal predecessors, (267), 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) [2021-11-04 14:34:32,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 267 transitions. [2021-11-04 14:34:32,955 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 267 transitions. Word has length 96 [2021-11-04 14:34:32,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 14:34:32,956 INFO L470 AbstractCegarLoop]: Abstraction has 215 states and 267 transitions. [2021-11-04 14:34:32,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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) [2021-11-04 14:34:32,956 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 267 transitions. [2021-11-04 14:34:32,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-04 14:34:32,957 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 14:34:32,957 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 14:34:32,983 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-04 14:34:33,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-11-04 14:34:33,171 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-04 14:34:33,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 14:34:33,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1663949871, now seen corresponding path program 1 times [2021-11-04 14:34:33,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 14:34:33,172 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94457693] [2021-11-04 14:34:33,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:34:33,173 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 14:34:33,201 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 14:34:33,205 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1581569830] [2021-11-04 14:34:33,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:34:33,205 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 14:34:33,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 14:34:33,209 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) [2021-11-04 14:34:33,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-04 14:34:33,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 14:34:33,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-04 14:34:33,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 14:34:33,532 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 14:34:33,532 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 14:34:33,539 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 14:34:33,539 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94457693] [2021-11-04 14:34:33,539 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 14:34:33,539 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1581569830] [2021-11-04 14:34:33,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1581569830] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 14:34:33,539 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 14:34:33,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 14:34:33,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841778278] [2021-11-04 14:34:33,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 14:34:33,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 14:34:33,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 14:34:33,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 14:34:33,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 14:34:33,543 INFO L87 Difference]: Start difference. First operand 215 states and 267 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 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) [2021-11-04 14:34:34,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 14:34:34,115 INFO L93 Difference]: Finished difference Result 418 states and 522 transitions. [2021-11-04 14:34:34,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-04 14:34:34,116 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 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 96 [2021-11-04 14:34:34,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 14:34:34,117 INFO L225 Difference]: With dead ends: 418 [2021-11-04 14:34:34,117 INFO L226 Difference]: Without dead ends: 207 [2021-11-04 14:34:34,118 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.47ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 14:34:34,121 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 213 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 471.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.65ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 548.95ms IncrementalHoareTripleChecker+Time [2021-11-04 14:34:34,122 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [213 Valid, 0 Invalid, 472 Unknown, 0 Unchecked, 2.65ms Time], IncrementalHoareTripleChecker [24 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 548.95ms Time] [2021-11-04 14:34:34,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2021-11-04 14:34:34,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 201. [2021-11-04 14:34:34,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 195 states have (on average 1.2615384615384615) internal successors, (246), 200 states have internal predecessors, (246), 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) [2021-11-04 14:34:34,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 246 transitions. [2021-11-04 14:34:34,153 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 246 transitions. Word has length 96 [2021-11-04 14:34:34,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 14:34:34,153 INFO L470 AbstractCegarLoop]: Abstraction has 201 states and 246 transitions. [2021-11-04 14:34:34,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 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) [2021-11-04 14:34:34,154 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 246 transitions. [2021-11-04 14:34:34,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-04 14:34:34,155 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 14:34:34,155 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 14:34:34,175 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-04 14:34:34,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 14:34:34,364 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-04 14:34:34,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 14:34:34,364 INFO L85 PathProgramCache]: Analyzing trace with hash 569918303, now seen corresponding path program 1 times [2021-11-04 14:34:34,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 14:34:34,365 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157029933] [2021-11-04 14:34:34,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:34:34,365 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 14:34:34,379 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 14:34:34,379 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1704920386] [2021-11-04 14:34:34,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:34:34,379 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 14:34:34,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 14:34:34,381 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) [2021-11-04 14:34:34,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-04 14:34:34,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 14:34:34,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-04 14:34:34,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 14:34:34,731 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-04 14:34:34,731 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 14:34:34,731 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 14:34:34,731 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157029933] [2021-11-04 14:34:34,732 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 14:34:34,732 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1704920386] [2021-11-04 14:34:34,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1704920386] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 14:34:34,732 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 14:34:34,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 14:34:34,733 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434967905] [2021-11-04 14:34:34,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 14:34:34,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 14:34:34,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 14:34:34,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 14:34:34,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 14:34:34,734 INFO L87 Difference]: Start difference. First operand 201 states and 246 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 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) [2021-11-04 14:34:35,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 14:34:35,582 INFO L93 Difference]: Finished difference Result 295 states and 364 transitions. [2021-11-04 14:34:35,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-04 14:34:35,583 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 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 96 [2021-11-04 14:34:35,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 14:34:35,584 INFO L225 Difference]: With dead ends: 295 [2021-11-04 14:34:35,584 INFO L226 Difference]: Without dead ends: 193 [2021-11-04 14:34:35,585 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.89ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 14:34:35,586 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 96 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 731.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.68ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 823.00ms IncrementalHoareTripleChecker+Time [2021-11-04 14:34:35,586 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 0 Invalid, 562 Unknown, 0 Unchecked, 2.68ms Time], IncrementalHoareTripleChecker [24 Valid, 538 Invalid, 0 Unknown, 0 Unchecked, 823.00ms Time] [2021-11-04 14:34:35,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2021-11-04 14:34:35,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 187. [2021-11-04 14:34:35,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 181 states have (on average 1.2430939226519337) internal successors, (225), 186 states have internal predecessors, (225), 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) [2021-11-04 14:34:35,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 225 transitions. [2021-11-04 14:34:35,592 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 225 transitions. Word has length 96 [2021-11-04 14:34:35,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 14:34:35,592 INFO L470 AbstractCegarLoop]: Abstraction has 187 states and 225 transitions. [2021-11-04 14:34:35,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 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) [2021-11-04 14:34:35,592 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 225 transitions. [2021-11-04 14:34:35,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-04 14:34:35,593 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 14:34:35,593 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 14:34:35,621 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-04 14:34:35,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 14:34:35,794 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-04 14:34:35,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 14:34:35,795 INFO L85 PathProgramCache]: Analyzing trace with hash -312930543, now seen corresponding path program 1 times [2021-11-04 14:34:35,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 14:34:35,795 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835731051] [2021-11-04 14:34:35,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:34:35,795 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 14:34:35,809 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 14:34:35,810 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [749181891] [2021-11-04 14:34:35,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:34:35,810 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 14:34:35,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 14:34:35,811 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) [2021-11-04 14:34:35,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-04 14:34:35,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 14:34:35,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-04 14:34:35,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 14:34:36,252 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 14:34:36,252 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 14:34:36,252 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 14:34:36,253 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835731051] [2021-11-04 14:34:36,253 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 14:34:36,253 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [749181891] [2021-11-04 14:34:36,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [749181891] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 14:34:36,254 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 14:34:36,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 14:34:36,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715030665] [2021-11-04 14:34:36,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 14:34:36,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 14:34:36,256 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 14:34:36,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 14:34:36,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 14:34:36,258 INFO L87 Difference]: Start difference. First operand 187 states and 225 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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) [2021-11-04 14:34:36,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 14:34:36,738 INFO L93 Difference]: Finished difference Result 486 states and 579 transitions. [2021-11-04 14:34:36,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 14:34:36,738 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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 96 [2021-11-04 14:34:36,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 14:34:36,739 INFO L225 Difference]: With dead ends: 486 [2021-11-04 14:34:36,740 INFO L226 Difference]: Without dead ends: 303 [2021-11-04 14:34:36,740 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.25ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 14:34:36,741 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 94 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 375.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.54ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 458.55ms IncrementalHoareTripleChecker+Time [2021-11-04 14:34:36,741 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 0 Invalid, 455 Unknown, 0 Unchecked, 1.54ms Time], IncrementalHoareTripleChecker [3 Valid, 452 Invalid, 0 Unknown, 0 Unchecked, 458.55ms Time] [2021-11-04 14:34:36,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2021-11-04 14:34:36,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 291. [2021-11-04 14:34:36,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 285 states have (on average 1.2280701754385965) internal successors, (350), 290 states have internal predecessors, (350), 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) [2021-11-04 14:34:36,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 350 transitions. [2021-11-04 14:34:36,750 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 350 transitions. Word has length 96 [2021-11-04 14:34:36,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 14:34:36,750 INFO L470 AbstractCegarLoop]: Abstraction has 291 states and 350 transitions. [2021-11-04 14:34:36,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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) [2021-11-04 14:34:36,751 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 350 transitions. [2021-11-04 14:34:36,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-04 14:34:36,752 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 14:34:36,752 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 14:34:36,780 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-04 14:34:36,978 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 14:34:36,978 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-04 14:34:36,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 14:34:36,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1090926304, now seen corresponding path program 1 times [2021-11-04 14:34:36,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 14:34:36,979 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948539717] [2021-11-04 14:34:36,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:34:36,979 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 14:34:36,992 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 14:34:36,992 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2088557137] [2021-11-04 14:34:36,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:34:36,992 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 14:34:36,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 14:34:36,994 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) [2021-11-04 14:34:36,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-04 14:34:37,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 14:34:37,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-04 14:34:37,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 14:34:37,286 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 14:34:37,287 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 14:34:37,287 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 14:34:37,287 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948539717] [2021-11-04 14:34:37,287 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 14:34:37,288 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2088557137] [2021-11-04 14:34:37,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2088557137] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 14:34:37,288 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 14:34:37,288 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 14:34:37,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990410510] [2021-11-04 14:34:37,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 14:34:37,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 14:34:37,289 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 14:34:37,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 14:34:37,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 14:34:37,290 INFO L87 Difference]: Start difference. First operand 291 states and 350 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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) [2021-11-04 14:34:37,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 14:34:37,933 INFO L93 Difference]: Finished difference Result 536 states and 651 transitions. [2021-11-04 14:34:37,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 14:34:37,934 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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 103 [2021-11-04 14:34:37,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 14:34:37,935 INFO L225 Difference]: With dead ends: 536 [2021-11-04 14:34:37,935 INFO L226 Difference]: Without dead ends: 293 [2021-11-04 14:34:37,936 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.22ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 14:34:37,936 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 540.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.46ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 622.85ms IncrementalHoareTripleChecker+Time [2021-11-04 14:34:37,937 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 422 Unknown, 0 Unchecked, 1.46ms Time], IncrementalHoareTripleChecker [2 Valid, 420 Invalid, 0 Unknown, 0 Unchecked, 622.85ms Time] [2021-11-04 14:34:37,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2021-11-04 14:34:37,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 293. [2021-11-04 14:34:37,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 287 states have (on average 1.2264808362369337) internal successors, (352), 292 states have internal predecessors, (352), 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) [2021-11-04 14:34:37,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 352 transitions. [2021-11-04 14:34:37,944 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 352 transitions. Word has length 103 [2021-11-04 14:34:37,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 14:34:37,945 INFO L470 AbstractCegarLoop]: Abstraction has 293 states and 352 transitions. [2021-11-04 14:34:37,945 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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) [2021-11-04 14:34:37,945 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 352 transitions. [2021-11-04 14:34:37,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-04 14:34:37,946 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 14:34:37,946 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 14:34:37,974 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-04 14:34:38,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 14:34:38,176 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-04 14:34:38,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 14:34:38,176 INFO L85 PathProgramCache]: Analyzing trace with hash 77446145, now seen corresponding path program 1 times [2021-11-04 14:34:38,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 14:34:38,176 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665290920] [2021-11-04 14:34:38,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:34:38,177 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 14:34:38,187 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 14:34:38,188 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [731784014] [2021-11-04 14:34:38,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:34:38,188 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 14:34:38,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 14:34:38,190 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) [2021-11-04 14:34:38,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-04 14:34:38,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 14:34:38,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-04 14:34:38,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 14:34:38,533 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-04 14:34:38,533 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-04 14:34:38,721 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-04 14:34:38,722 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 14:34:38,722 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665290920] [2021-11-04 14:34:38,722 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 14:34:38,722 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [731784014] [2021-11-04 14:34:38,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [731784014] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-04 14:34:38,723 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-04 14:34:38,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-11-04 14:34:38,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259800926] [2021-11-04 14:34:38,723 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-04 14:34:38,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-04 14:34:38,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 14:34:38,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-04 14:34:38,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-04 14:34:38,725 INFO L87 Difference]: Start difference. First operand 293 states and 352 transitions. Second operand has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 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) [2021-11-04 14:34:39,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 14:34:39,312 INFO L93 Difference]: Finished difference Result 544 states and 663 transitions. [2021-11-04 14:34:39,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-04 14:34:39,313 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 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 105 [2021-11-04 14:34:39,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 14:34:39,314 INFO L225 Difference]: With dead ends: 544 [2021-11-04 14:34:39,314 INFO L226 Difference]: Without dead ends: 299 [2021-11-04 14:34:39,315 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.48ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-04 14:34:39,315 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 633 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 496.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.45ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 573.02ms IncrementalHoareTripleChecker+Time [2021-11-04 14:34:39,315 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 645 Unknown, 0 Unchecked, 1.45ms Time], IncrementalHoareTripleChecker [12 Valid, 633 Invalid, 0 Unknown, 0 Unchecked, 573.02ms Time] [2021-11-04 14:34:39,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2021-11-04 14:34:39,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2021-11-04 14:34:39,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 293 states have (on average 1.2218430034129693) internal successors, (358), 298 states have internal predecessors, (358), 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) [2021-11-04 14:34:39,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 358 transitions. [2021-11-04 14:34:39,323 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 358 transitions. Word has length 105 [2021-11-04 14:34:39,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 14:34:39,324 INFO L470 AbstractCegarLoop]: Abstraction has 299 states and 358 transitions. [2021-11-04 14:34:39,324 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 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) [2021-11-04 14:34:39,324 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 358 transitions. [2021-11-04 14:34:39,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-04 14:34:39,325 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 14:34:39,325 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 14:34:39,344 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-04 14:34:39,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 14:34:39,536 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-04 14:34:39,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 14:34:39,536 INFO L85 PathProgramCache]: Analyzing trace with hash -383990624, now seen corresponding path program 2 times [2021-11-04 14:34:39,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 14:34:39,536 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516854542] [2021-11-04 14:34:39,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:34:39,537 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 14:34:39,546 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 14:34:39,546 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [335946034] [2021-11-04 14:34:39,546 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-04 14:34:39,546 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 14:34:39,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 14:34:39,548 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) [2021-11-04 14:34:39,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-04 14:34:39,678 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-04 14:34:39,678 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-04 14:34:39,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-04 14:34:39,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 14:34:39,945 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-04 14:34:39,945 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-04 14:34:40,200 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-04 14:34:40,200 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 14:34:40,200 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516854542] [2021-11-04 14:34:40,201 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 14:34:40,201 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [335946034] [2021-11-04 14:34:40,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [335946034] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-04 14:34:40,201 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-04 14:34:40,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-11-04 14:34:40,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157351914] [2021-11-04 14:34:40,204 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-04 14:34:40,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-04 14:34:40,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 14:34:40,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-04 14:34:40,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-11-04 14:34:40,206 INFO L87 Difference]: Start difference. First operand 299 states and 358 transitions. Second operand has 12 states, 12 states have (on average 9.5) internal successors, (114), 12 states have internal predecessors, (114), 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) [2021-11-04 14:34:40,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 14:34:40,821 INFO L93 Difference]: Finished difference Result 562 states and 687 transitions. [2021-11-04 14:34:40,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-04 14:34:40,822 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.5) internal successors, (114), 12 states have internal predecessors, (114), 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 111 [2021-11-04 14:34:40,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 14:34:40,823 INFO L225 Difference]: With dead ends: 562 [2021-11-04 14:34:40,824 INFO L226 Difference]: Without dead ends: 311 [2021-11-04 14:34:40,824 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 71.61ms TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-11-04 14:34:40,825 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 645 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 511.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.68ms SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 599.73ms IncrementalHoareTripleChecker+Time [2021-11-04 14:34:40,825 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 678 Unknown, 0 Unchecked, 1.68ms Time], IncrementalHoareTripleChecker [33 Valid, 645 Invalid, 0 Unknown, 0 Unchecked, 599.73ms Time] [2021-11-04 14:34:40,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2021-11-04 14:34:40,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 311. [2021-11-04 14:34:40,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 305 states have (on average 1.2131147540983607) internal successors, (370), 310 states have internal predecessors, (370), 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) [2021-11-04 14:34:40,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 370 transitions. [2021-11-04 14:34:40,833 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 370 transitions. Word has length 111 [2021-11-04 14:34:40,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 14:34:40,833 INFO L470 AbstractCegarLoop]: Abstraction has 311 states and 370 transitions. [2021-11-04 14:34:40,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.5) internal successors, (114), 12 states have internal predecessors, (114), 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) [2021-11-04 14:34:40,833 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 370 transitions. [2021-11-04 14:34:40,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-04 14:34:40,835 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 14:34:40,835 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 14:34:40,863 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-04 14:34:41,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-04 14:34:41,059 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-04 14:34:41,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 14:34:41,059 INFO L85 PathProgramCache]: Analyzing trace with hash 562679104, now seen corresponding path program 3 times [2021-11-04 14:34:41,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 14:34:41,059 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381389873] [2021-11-04 14:34:41,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:34:41,059 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 14:34:41,071 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 14:34:41,071 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1859999368] [2021-11-04 14:34:41,071 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-04 14:34:41,072 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 14:34:41,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 14:34:41,073 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) [2021-11-04 14:34:41,074 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-04 14:34:41,210 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-04 14:34:41,210 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-04 14:34:41,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-04 14:34:41,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 14:34:41,493 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2021-11-04 14:34:41,494 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 14:34:41,494 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 14:34:41,494 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381389873] [2021-11-04 14:34:41,494 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 14:34:41,495 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1859999368] [2021-11-04 14:34:41,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1859999368] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 14:34:41,495 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 14:34:41,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 14:34:41,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860514811] [2021-11-04 14:34:41,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 14:34:41,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 14:34:41,496 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 14:34:41,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 14:34:41,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 14:34:41,497 INFO L87 Difference]: Start difference. First operand 311 states and 370 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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) [2021-11-04 14:34:41,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 14:34:41,874 INFO L93 Difference]: Finished difference Result 514 states and 611 transitions. [2021-11-04 14:34:41,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-04 14:34:41,875 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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 123 [2021-11-04 14:34:41,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 14:34:41,876 INFO L225 Difference]: With dead ends: 514 [2021-11-04 14:34:41,876 INFO L226 Difference]: Without dead ends: 251 [2021-11-04 14:34:41,877 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.51ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 14:34:41,877 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 308 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 302.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.42ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 358.99ms IncrementalHoareTripleChecker+Time [2021-11-04 14:34:41,878 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [308 Valid, 0 Invalid, 315 Unknown, 0 Unchecked, 1.42ms Time], IncrementalHoareTripleChecker [1 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 358.99ms Time] [2021-11-04 14:34:41,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2021-11-04 14:34:41,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 251. [2021-11-04 14:34:41,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 245 states have (on average 1.1918367346938776) internal successors, (292), 250 states have internal predecessors, (292), 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) [2021-11-04 14:34:41,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 292 transitions. [2021-11-04 14:34:41,885 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 292 transitions. Word has length 123 [2021-11-04 14:34:41,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 14:34:41,885 INFO L470 AbstractCegarLoop]: Abstraction has 251 states and 292 transitions. [2021-11-04 14:34:41,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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) [2021-11-04 14:34:41,886 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 292 transitions. [2021-11-04 14:34:41,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-04 14:34:41,887 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 14:34:41,887 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 14:34:41,915 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-04 14:34:42,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 14:34:42,111 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-04 14:34:42,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 14:34:42,112 INFO L85 PathProgramCache]: Analyzing trace with hash 455085018, now seen corresponding path program 1 times [2021-11-04 14:34:42,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 14:34:42,112 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403153024] [2021-11-04 14:34:42,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:34:42,112 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 14:34:42,122 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 14:34:42,123 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1183645887] [2021-11-04 14:34:42,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:34:42,123 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 14:34:42,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 14:34:42,124 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) [2021-11-04 14:34:42,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-04 14:34:42,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 14:34:42,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-04 14:34:42,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 14:34:42,596 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 2 proven. 55 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-04 14:34:42,597 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-04 14:34:42,999 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 2 proven. 55 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-04 14:34:42,999 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 14:34:43,000 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403153024] [2021-11-04 14:34:43,000 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 14:34:43,000 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1183645887] [2021-11-04 14:34:43,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1183645887] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-04 14:34:43,000 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-04 14:34:43,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2021-11-04 14:34:43,000 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132463418] [2021-11-04 14:34:43,000 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-04 14:34:43,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-04 14:34:43,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 14:34:43,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-04 14:34:43,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-11-04 14:34:43,002 INFO L87 Difference]: Start difference. First operand 251 states and 292 transitions. Second operand has 24 states, 24 states have (on average 5.541666666666667) internal successors, (133), 24 states have internal predecessors, (133), 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) [2021-11-04 14:34:44,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 14:34:44,254 INFO L93 Difference]: Finished difference Result 465 states and 565 transitions. [2021-11-04 14:34:44,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-04 14:34:44,254 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.541666666666667) internal successors, (133), 24 states have internal predecessors, (133), 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 130 [2021-11-04 14:34:44,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 14:34:44,256 INFO L225 Difference]: With dead ends: 465 [2021-11-04 14:34:44,256 INFO L226 Difference]: Without dead ends: 275 [2021-11-04 14:34:44,257 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 266.19ms TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-11-04 14:34:44,257 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 603 mSDsCounter, 0 mSdLazyCounter, 872 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1102.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.19ms SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1226.45ms IncrementalHoareTripleChecker+Time [2021-11-04 14:34:44,257 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 958 Unknown, 0 Unchecked, 2.19ms Time], IncrementalHoareTripleChecker [86 Valid, 872 Invalid, 0 Unknown, 0 Unchecked, 1226.45ms Time] [2021-11-04 14:34:44,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2021-11-04 14:34:44,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 275. [2021-11-04 14:34:44,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 269 states have (on average 1.174721189591078) internal successors, (316), 274 states have internal predecessors, (316), 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) [2021-11-04 14:34:44,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 316 transitions. [2021-11-04 14:34:44,267 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 316 transitions. Word has length 130 [2021-11-04 14:34:44,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 14:34:44,267 INFO L470 AbstractCegarLoop]: Abstraction has 275 states and 316 transitions. [2021-11-04 14:34:44,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.541666666666667) internal successors, (133), 24 states have internal predecessors, (133), 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) [2021-11-04 14:34:44,268 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 316 transitions. [2021-11-04 14:34:44,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-04 14:34:44,269 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 14:34:44,269 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 14:34:44,293 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-04 14:34:44,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-04 14:34:44,486 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-04 14:34:44,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 14:34:44,487 INFO L85 PathProgramCache]: Analyzing trace with hash -535721318, now seen corresponding path program 2 times [2021-11-04 14:34:44,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 14:34:44,487 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322238373] [2021-11-04 14:34:44,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:34:44,487 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 14:34:44,509 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 14:34:44,513 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1128481326] [2021-11-04 14:34:44,514 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-04 14:34:44,514 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 14:34:44,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 14:34:44,515 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) [2021-11-04 14:34:44,519 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-04 14:34:44,706 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-04 14:34:44,706 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-04 14:34:44,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 624 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-04 14:34:44,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 14:34:45,318 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 2 proven. 253 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2021-11-04 14:34:45,318 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-04 14:34:46,339 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 2 proven. 253 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2021-11-04 14:34:46,339 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 14:34:46,339 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322238373] [2021-11-04 14:34:46,340 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 14:34:46,340 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128481326] [2021-11-04 14:34:46,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1128481326] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-04 14:34:46,340 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-04 14:34:46,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 48 [2021-11-04 14:34:46,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996720781] [2021-11-04 14:34:46,340 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-04 14:34:46,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-11-04 14:34:46,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 14:34:46,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-11-04 14:34:46,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1127, Invalid=1129, Unknown=0, NotChecked=0, Total=2256 [2021-11-04 14:34:46,343 INFO L87 Difference]: Start difference. First operand 275 states and 316 transitions. Second operand has 48 states, 48 states have (on average 3.2708333333333335) internal successors, (157), 48 states have internal predecessors, (157), 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) [2021-11-04 14:34:47,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 14:34:47,758 INFO L93 Difference]: Finished difference Result 521 states and 641 transitions. [2021-11-04 14:34:47,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-11-04 14:34:47,759 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 3.2708333333333335) internal successors, (157), 48 states have internal predecessors, (157), 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 154 [2021-11-04 14:34:47,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 14:34:47,760 INFO L225 Difference]: With dead ends: 521 [2021-11-04 14:34:47,760 INFO L226 Difference]: Without dead ends: 319 [2021-11-04 14:34:47,762 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1013.77ms TimeCoverageRelationStatistics Valid=1127, Invalid=1129, Unknown=0, NotChecked=0, Total=2256 [2021-11-04 14:34:47,762 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 1407 mSDsCounter, 0 mSdLazyCounter, 1740 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1114.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.81ms SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 1740 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1357.79ms IncrementalHoareTripleChecker+Time [2021-11-04 14:34:47,762 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 1903 Unknown, 0 Unchecked, 4.81ms Time], IncrementalHoareTripleChecker [163 Valid, 1740 Invalid, 0 Unknown, 0 Unchecked, 1357.79ms Time] [2021-11-04 14:34:47,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2021-11-04 14:34:47,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 319. [2021-11-04 14:34:47,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 313 states have (on average 1.1501597444089458) internal successors, (360), 318 states have internal predecessors, (360), 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) [2021-11-04 14:34:47,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 360 transitions. [2021-11-04 14:34:47,774 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 360 transitions. Word has length 154 [2021-11-04 14:34:47,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 14:34:47,774 INFO L470 AbstractCegarLoop]: Abstraction has 319 states and 360 transitions. [2021-11-04 14:34:47,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 3.2708333333333335) internal successors, (157), 48 states have internal predecessors, (157), 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) [2021-11-04 14:34:47,774 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 360 transitions. [2021-11-04 14:34:47,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2021-11-04 14:34:47,775 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 14:34:47,776 INFO L514 BasicCegarLoop]: trace histogram [44, 44, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 14:34:47,803 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-11-04 14:34:47,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-04 14:34:47,999 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-04 14:34:48,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 14:34:48,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1925066490, now seen corresponding path program 3 times [2021-11-04 14:34:48,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 14:34:48,000 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411745724] [2021-11-04 14:34:48,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:34:48,000 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 14:34:48,021 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 14:34:48,022 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [846169667] [2021-11-04 14:34:48,022 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-04 14:34:48,022 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 14:34:48,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 14:34:48,023 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) [2021-11-04 14:34:48,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process Killed by 15