./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-3.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_test5-3.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 5b724500cddd07446974ec59df8ac86aa980f4ff713324fa73d397377235cbe2 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-c36dfa3 [2021-11-04 14:47:27,374 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-04 14:47:27,376 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-04 14:47:27,409 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-04 14:47:27,409 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-04 14:47:27,411 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-04 14:47:27,412 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-04 14:47:27,414 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-04 14:47:27,416 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-04 14:47:27,418 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-04 14:47:27,419 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-04 14:47:27,420 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-04 14:47:27,420 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-04 14:47:27,422 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-04 14:47:27,423 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-04 14:47:27,425 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-04 14:47:27,425 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-04 14:47:27,426 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-04 14:47:27,427 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-04 14:47:27,428 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-04 14:47:27,429 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-04 14:47:27,429 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-04 14:47:27,430 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-04 14:47:27,431 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-04 14:47:27,438 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-04 14:47:27,438 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-04 14:47:27,438 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-04 14:47:27,440 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-04 14:47:27,440 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-04 14:47:27,440 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-04 14:47:27,441 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-04 14:47:27,441 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-04 14:47:27,442 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-04 14:47:27,443 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-04 14:47:27,444 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-04 14:47:27,444 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-04 14:47:27,444 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-04 14:47:27,445 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-04 14:47:27,445 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-04 14:47:27,445 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-04 14:47:27,446 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-04 14:47:27,446 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-04 14:47:27,478 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-04 14:47:27,479 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-04 14:47:27,480 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-04 14:47:27,480 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-04 14:47:27,481 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-04 14:47:27,481 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-04 14:47:27,481 INFO L138 SettingsManager]: * Use SBE=true [2021-11-04 14:47:27,481 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-04 14:47:27,481 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-04 14:47:27,482 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-04 14:47:27,482 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-04 14:47:27,482 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-04 14:47:27,483 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-04 14:47:27,483 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-04 14:47:27,483 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-04 14:47:27,483 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-04 14:47:27,483 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-04 14:47:27,483 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-04 14:47:27,483 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-04 14:47:27,484 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-04 14:47:27,484 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-04 14:47:27,487 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-04 14:47:27,488 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 14:47:27,488 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-04 14:47:27,488 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-04 14:47:27,488 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-04 14:47:27,488 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-04 14:47:27,488 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-04 14:47:27,490 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-04 14:47:27,490 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-04 14:47:27,490 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-04 14:47:27,490 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-04 14:47:27,490 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5b724500cddd07446974ec59df8ac86aa980f4ff713324fa73d397377235cbe2 [2021-11-04 14:47:27,639 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-04 14:47:27,653 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-04 14:47:27,655 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-04 14:47:27,655 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-04 14:47:27,656 INFO L275 PluginConnector]: CDTParser initialized [2021-11-04 14:47:27,657 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-3.i [2021-11-04 14:47:27,704 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfba66ce7/d88959920f2a4d2c968d3210b0b7ae61/FLAG4cb28840d [2021-11-04 14:47:28,164 INFO L306 CDTParser]: Found 1 translation units. [2021-11-04 14:47:28,168 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-3.i [2021-11-04 14:47:28,192 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfba66ce7/d88959920f2a4d2c968d3210b0b7ae61/FLAG4cb28840d [2021-11-04 14:47:28,691 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfba66ce7/d88959920f2a4d2c968d3210b0b7ae61 [2021-11-04 14:47:28,693 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-04 14:47:28,694 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-04 14:47:28,695 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-04 14:47:28,695 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-04 14:47:28,697 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-04 14:47:28,698 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 02:47:28" (1/1) ... [2021-11-04 14:47:28,698 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@177cdb27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 02:47:28, skipping insertion in model container [2021-11-04 14:47:28,698 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 02:47:28" (1/1) ... [2021-11-04 14:47:28,703 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-04 14:47:28,730 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-04 14:47:28,967 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_test5-3.i[33021,33034] [2021-11-04 14:47:29,036 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_test5-3.i[49681,49694] [2021-11-04 14:47:29,049 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 14:47:29,054 INFO L203 MainTranslator]: Completed pre-run [2021-11-04 14:47:29,071 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_test5-3.i[33021,33034] [2021-11-04 14:47:29,113 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_test5-3.i[49681,49694] [2021-11-04 14:47:29,123 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 14:47:29,147 INFO L208 MainTranslator]: Completed translation [2021-11-04 14:47:29,148 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 02:47:29 WrapperNode [2021-11-04 14:47:29,148 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-04 14:47:29,149 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-04 14:47:29,149 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-04 14:47:29,149 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-04 14:47:29,154 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 02:47:29" (1/1) ... [2021-11-04 14:47:29,206 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 02:47:29" (1/1) ... [2021-11-04 14:47:29,311 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-04 14:47:29,312 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-04 14:47:29,312 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-04 14:47:29,312 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-04 14:47:29,318 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 02:47:29" (1/1) ... [2021-11-04 14:47:29,318 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 02:47:29" (1/1) ... [2021-11-04 14:47:29,330 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 02:47:29" (1/1) ... [2021-11-04 14:47:29,332 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 02:47:29" (1/1) ... [2021-11-04 14:47:29,381 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 02:47:29" (1/1) ... [2021-11-04 14:47:29,391 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 02:47:29" (1/1) ... [2021-11-04 14:47:29,405 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 02:47:29" (1/1) ... [2021-11-04 14:47:29,412 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-04 14:47:29,420 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-04 14:47:29,420 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-04 14:47:29,420 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-04 14:47:29,422 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 02:47:29" (1/1) ... [2021-11-04 14:47:29,426 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 14:47:29,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 14:47:29,444 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 14:47:29,450 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 14:47:29,475 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-04 14:47:29,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-04 14:47:29,476 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-04 14:47:29,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-04 14:47:29,476 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-04 14:47:29,476 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-04 14:47:29,476 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-04 14:47:29,476 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-04 14:47:29,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-04 14:47:29,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-04 14:47:29,477 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-04 14:47:30,083 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-04 14:47:30,085 INFO L299 CfgBuilder]: Removed 128 assume(true) statements. [2021-11-04 14:47:30,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 02:47:30 BoogieIcfgContainer [2021-11-04 14:47:30,087 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-04 14:47:30,088 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-04 14:47:30,088 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-04 14:47:30,091 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-04 14:47:30,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.11 02:47:28" (1/3) ... [2021-11-04 14:47:30,092 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@513cc179 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 02:47:30, skipping insertion in model container [2021-11-04 14:47:30,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 02:47:29" (2/3) ... [2021-11-04 14:47:30,092 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@513cc179 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 02:47:30, skipping insertion in model container [2021-11-04 14:47:30,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 02:47:30" (3/3) ... [2021-11-04 14:47:30,093 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_BER_test5-3.i [2021-11-04 14:47:30,096 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-04 14:47:30,096 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-04 14:47:30,135 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-04 14:47:30,140 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 14:47:30,140 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-04 14:47:30,152 INFO L276 IsEmpty]: Start isEmpty. Operand has 308 states, 301 states have (on average 1.7242524916943522) internal successors, (519), 307 states have internal predecessors, (519), 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 14:47:30,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-04 14:47:30,156 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 14:47:30,156 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 14:47:30,157 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 14:47:30,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 14:47:30,160 INFO L85 PathProgramCache]: Analyzing trace with hash 889803109, now seen corresponding path program 1 times [2021-11-04 14:47:30,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 14:47:30,166 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487810494] [2021-11-04 14:47:30,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:47:30,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 14:47:30,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 14:47:30,284 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 14:47:30,285 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 14:47:30,285 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487810494] [2021-11-04 14:47:30,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487810494] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 14:47:30,286 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 14:47:30,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 14:47:30,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106203560] [2021-11-04 14:47:30,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 14:47:30,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-04 14:47:30,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 14:47:30,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-04 14:47:30,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-04 14:47:30,313 INFO L87 Difference]: Start difference. First operand has 308 states, 301 states have (on average 1.7242524916943522) internal successors, (519), 307 states have internal predecessors, (519), 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 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 14:47:30,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 14:47:30,988 INFO L93 Difference]: Finished difference Result 614 states and 1036 transitions. [2021-11-04 14:47:30,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-04 14:47:30,991 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-04 14:47:30,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 14:47:30,998 INFO L225 Difference]: With dead ends: 614 [2021-11-04 14:47:30,998 INFO L226 Difference]: Without dead ends: 254 [2021-11-04 14:47:31,002 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 14:47:31,005 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 528.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.30ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 621.14ms IncrementalHoareTripleChecker+Time [2021-11-04 14:47:31,005 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 406 Unknown, 0 Unchecked, 2.30ms Time], IncrementalHoareTripleChecker [0 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 621.14ms Time] [2021-11-04 14:47:31,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2021-11-04 14:47:31,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2021-11-04 14:47:31,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 248 states have (on average 1.342741935483871) internal successors, (333), 253 states have internal predecessors, (333), 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 14:47:31,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 333 transitions. [2021-11-04 14:47:31,035 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 333 transitions. Word has length 8 [2021-11-04 14:47:31,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 14:47:31,036 INFO L470 AbstractCegarLoop]: Abstraction has 254 states and 333 transitions. [2021-11-04 14:47:31,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 14:47:31,036 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 333 transitions. [2021-11-04 14:47:31,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-04 14:47:31,037 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 14:47:31,037 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] [2021-11-04 14:47:31,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-04 14:47:31,038 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 14:47:31,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 14:47:31,039 INFO L85 PathProgramCache]: Analyzing trace with hash -680083191, now seen corresponding path program 1 times [2021-11-04 14:47:31,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 14:47:31,039 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167531138] [2021-11-04 14:47:31,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:47:31,040 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 14:47:31,054 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 14:47:31,054 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [538924537] [2021-11-04 14:47:31,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:47:31,055 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 14:47:31,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 14:47:31,056 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 14:47:31,057 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 14:47:31,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 14:47:31,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-04 14:47:31,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 14:47:31,337 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 14:47:31,337 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 14:47:31,338 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 14:47:31,338 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167531138] [2021-11-04 14:47:31,338 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 14:47:31,338 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [538924537] [2021-11-04 14:47:31,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [538924537] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 14:47:31,338 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 14:47:31,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 14:47:31,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051164267] [2021-11-04 14:47:31,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 14:47:31,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 14:47:31,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 14:47:31,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 14:47:31,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 14:47:31,341 INFO L87 Difference]: Start difference. First operand 254 states and 333 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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 14:47:32,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 14:47:32,172 INFO L93 Difference]: Finished difference Result 587 states and 769 transitions. [2021-11-04 14:47:32,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 14:47:32,177 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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 42 [2021-11-04 14:47:32,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 14:47:32,181 INFO L225 Difference]: With dead ends: 587 [2021-11-04 14:47:32,182 INFO L226 Difference]: Without dead ends: 505 [2021-11-04 14:47:32,182 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.61ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 14:47:32,183 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 327 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 664 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 663.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.56ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 798.46ms IncrementalHoareTripleChecker+Time [2021-11-04 14:47:32,184 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [327 Valid, 0 Invalid, 665 Unknown, 0 Unchecked, 4.56ms Time], IncrementalHoareTripleChecker [1 Valid, 664 Invalid, 0 Unknown, 0 Unchecked, 798.46ms Time] [2021-11-04 14:47:32,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2021-11-04 14:47:32,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 255. [2021-11-04 14:47:32,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 249 states have (on average 1.3413654618473896) internal successors, (334), 254 states have internal predecessors, (334), 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 14:47:32,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 334 transitions. [2021-11-04 14:47:32,196 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 334 transitions. Word has length 42 [2021-11-04 14:47:32,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 14:47:32,196 INFO L470 AbstractCegarLoop]: Abstraction has 255 states and 334 transitions. [2021-11-04 14:47:32,197 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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 14:47:32,197 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 334 transitions. [2021-11-04 14:47:32,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-04 14:47:32,201 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 14:47:32,201 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:47:32,220 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 14:47:32,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 14:47:32,417 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 14:47:32,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 14:47:32,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1837409632, now seen corresponding path program 1 times [2021-11-04 14:47:32,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 14:47:32,418 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015023644] [2021-11-04 14:47:32,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:47:32,418 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 14:47:32,444 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 14:47:32,445 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [982908352] [2021-11-04 14:47:32,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:47:32,451 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 14:47:32,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 14:47:32,452 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 14:47:32,453 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 14:47:32,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 14:47:32,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-04 14:47:32,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 14:47:32,827 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 14:47:32,827 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 14:47:32,827 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 14:47:32,828 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015023644] [2021-11-04 14:47:32,828 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 14:47:32,828 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [982908352] [2021-11-04 14:47:32,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [982908352] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 14:47:32,828 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 14:47:32,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 14:47:32,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620366612] [2021-11-04 14:47:32,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 14:47:32,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 14:47:32,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 14:47:32,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 14:47:32,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 14:47:32,830 INFO L87 Difference]: Start difference. First operand 255 states and 334 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 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 14:47:33,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 14:47:33,462 INFO L93 Difference]: Finished difference Result 528 states and 696 transitions. [2021-11-04 14:47:33,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 14:47:33,471 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 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 140 [2021-11-04 14:47:33,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 14:47:33,473 INFO L225 Difference]: With dead ends: 528 [2021-11-04 14:47:33,473 INFO L226 Difference]: Without dead ends: 276 [2021-11-04 14:47:33,475 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.44ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 14:47:33,497 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 9 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 655 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 498.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.92ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 601.96ms IncrementalHoareTripleChecker+Time [2021-11-04 14:47:33,497 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 0 Invalid, 683 Unknown, 0 Unchecked, 1.92ms Time], IncrementalHoareTripleChecker [28 Valid, 655 Invalid, 0 Unknown, 0 Unchecked, 601.96ms Time] [2021-11-04 14:47:33,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2021-11-04 14:47:33,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 275. [2021-11-04 14:47:33,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 269 states have (on average 1.3159851301115242) internal successors, (354), 274 states have internal predecessors, (354), 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 14:47:33,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 354 transitions. [2021-11-04 14:47:33,516 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 354 transitions. Word has length 140 [2021-11-04 14:47:33,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 14:47:33,517 INFO L470 AbstractCegarLoop]: Abstraction has 275 states and 354 transitions. [2021-11-04 14:47:33,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 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 14:47:33,517 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 354 transitions. [2021-11-04 14:47:33,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-04 14:47:33,520 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 14:47:33,520 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:47:33,538 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-04 14:47:33,737 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,SelfDestructingSolverStorable2 [2021-11-04 14:47:33,738 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 14:47:33,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 14:47:33,738 INFO L85 PathProgramCache]: Analyzing trace with hash -1273244828, now seen corresponding path program 1 times [2021-11-04 14:47:33,738 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 14:47:33,738 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697369019] [2021-11-04 14:47:33,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:47:33,739 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 14:47:33,758 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 14:47:33,766 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [965423867] [2021-11-04 14:47:33,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:47:33,768 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 14:47:33,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 14:47:33,770 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 14:47:33,771 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 14:47:33,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 14:47:33,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-04 14:47:33,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 14:47:34,182 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 14:47:34,182 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 14:47:34,183 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 14:47:34,183 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697369019] [2021-11-04 14:47:34,183 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 14:47:34,183 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [965423867] [2021-11-04 14:47:34,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [965423867] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 14:47:34,183 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 14:47:34,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 14:47:34,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570069672] [2021-11-04 14:47:34,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 14:47:34,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 14:47:34,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 14:47:34,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 14:47:34,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 14:47:34,185 INFO L87 Difference]: Start difference. First operand 275 states and 354 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 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 14:47:34,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 14:47:34,801 INFO L93 Difference]: Finished difference Result 568 states and 736 transitions. [2021-11-04 14:47:34,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 14:47:34,801 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 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 140 [2021-11-04 14:47:34,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 14:47:34,803 INFO L225 Difference]: With dead ends: 568 [2021-11-04 14:47:34,803 INFO L226 Difference]: Without dead ends: 296 [2021-11-04 14:47:34,804 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.51ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 14:47:34,804 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 9 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 655 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 490.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.72ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 600.14ms IncrementalHoareTripleChecker+Time [2021-11-04 14:47:34,804 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 0 Invalid, 683 Unknown, 0 Unchecked, 1.72ms Time], IncrementalHoareTripleChecker [28 Valid, 655 Invalid, 0 Unknown, 0 Unchecked, 600.14ms Time] [2021-11-04 14:47:34,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2021-11-04 14:47:34,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 295. [2021-11-04 14:47:34,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 289 states have (on average 1.2941176470588236) internal successors, (374), 294 states have internal predecessors, (374), 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 14:47:34,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 374 transitions. [2021-11-04 14:47:34,811 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 374 transitions. Word has length 140 [2021-11-04 14:47:34,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 14:47:34,819 INFO L470 AbstractCegarLoop]: Abstraction has 295 states and 374 transitions. [2021-11-04 14:47:34,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 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 14:47:34,819 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 374 transitions. [2021-11-04 14:47:34,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-04 14:47:34,820 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 14:47:34,820 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:47:34,843 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 14:47:35,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 14:47:35,021 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 14:47:35,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 14:47:35,022 INFO L85 PathProgramCache]: Analyzing trace with hash -882913824, now seen corresponding path program 1 times [2021-11-04 14:47:35,022 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 14:47:35,022 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083210996] [2021-11-04 14:47:35,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:47:35,022 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 14:47:35,035 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 14:47:35,035 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [4354738] [2021-11-04 14:47:35,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:47:35,035 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 14:47:35,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 14:47:35,036 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 14:47:35,055 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 14:47:35,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 14:47:35,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-04 14:47:35,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 14:47:35,403 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-04 14:47:35,403 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 14:47:35,403 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 14:47:35,404 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083210996] [2021-11-04 14:47:35,404 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 14:47:35,404 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [4354738] [2021-11-04 14:47:35,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [4354738] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 14:47:35,404 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 14:47:35,404 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 14:47:35,404 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556480231] [2021-11-04 14:47:35,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 14:47:35,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 14:47:35,405 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 14:47:35,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 14:47:35,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 14:47:35,406 INFO L87 Difference]: Start difference. First operand 295 states and 374 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 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 14:47:36,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 14:47:36,006 INFO L93 Difference]: Finished difference Result 397 states and 510 transitions. [2021-11-04 14:47:36,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 14:47:36,006 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 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 140 [2021-11-04 14:47:36,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 14:47:36,008 INFO L225 Difference]: With dead ends: 397 [2021-11-04 14:47:36,008 INFO L226 Difference]: Without dead ends: 316 [2021-11-04 14:47:36,008 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.74ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 14:47:36,009 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 10 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 655 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 494.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.48ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 586.74ms IncrementalHoareTripleChecker+Time [2021-11-04 14:47:36,009 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 0 Invalid, 683 Unknown, 0 Unchecked, 1.48ms Time], IncrementalHoareTripleChecker [28 Valid, 655 Invalid, 0 Unknown, 0 Unchecked, 586.74ms Time] [2021-11-04 14:47:36,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2021-11-04 14:47:36,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 315. [2021-11-04 14:47:36,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 309 states have (on average 1.2750809061488673) internal successors, (394), 314 states have internal predecessors, (394), 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 14:47:36,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 394 transitions. [2021-11-04 14:47:36,015 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 394 transitions. Word has length 140 [2021-11-04 14:47:36,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 14:47:36,016 INFO L470 AbstractCegarLoop]: Abstraction has 315 states and 394 transitions. [2021-11-04 14:47:36,016 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 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 14:47:36,016 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 394 transitions. [2021-11-04 14:47:36,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-04 14:47:36,017 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 14:47:36,017 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:47:36,035 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 14:47:36,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 14:47:36,227 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 14:47:36,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 14:47:36,228 INFO L85 PathProgramCache]: Analyzing trace with hash 115522276, now seen corresponding path program 1 times [2021-11-04 14:47:36,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 14:47:36,228 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442983852] [2021-11-04 14:47:36,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:47:36,228 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 14:47:36,240 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 14:47:36,240 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2130690999] [2021-11-04 14:47:36,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:47:36,240 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 14:47:36,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 14:47:36,241 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 14:47:36,242 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 14:47:36,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 14:47:36,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-04 14:47:36,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 14:47:36,634 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 14:47:36,634 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 14:47:36,634 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 14:47:36,634 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442983852] [2021-11-04 14:47:36,634 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 14:47:36,634 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2130690999] [2021-11-04 14:47:36,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2130690999] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 14:47:36,635 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 14:47:36,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 14:47:36,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778846887] [2021-11-04 14:47:36,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 14:47:36,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 14:47:36,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 14:47:36,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 14:47:36,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 14:47:36,636 INFO L87 Difference]: Start difference. First operand 315 states and 394 transitions. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 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 14:47:37,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 14:47:37,253 INFO L93 Difference]: Finished difference Result 619 states and 777 transitions. [2021-11-04 14:47:37,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-04 14:47:37,253 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 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 140 [2021-11-04 14:47:37,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 14:47:37,255 INFO L225 Difference]: With dead ends: 619 [2021-11-04 14:47:37,255 INFO L226 Difference]: Without dead ends: 307 [2021-11-04 14:47:37,255 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.05ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 14:47:37,256 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 321 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 661 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 502.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.96ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 596.33ms IncrementalHoareTripleChecker+Time [2021-11-04 14:47:37,256 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [321 Valid, 0 Invalid, 685 Unknown, 0 Unchecked, 1.96ms Time], IncrementalHoareTripleChecker [24 Valid, 661 Invalid, 0 Unknown, 0 Unchecked, 596.33ms Time] [2021-11-04 14:47:37,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2021-11-04 14:47:37,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 301. [2021-11-04 14:47:37,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 295 states have (on average 1.264406779661017) internal successors, (373), 300 states have internal predecessors, (373), 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 14:47:37,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 373 transitions. [2021-11-04 14:47:37,269 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 373 transitions. Word has length 140 [2021-11-04 14:47:37,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 14:47:37,270 INFO L470 AbstractCegarLoop]: Abstraction has 301 states and 373 transitions. [2021-11-04 14:47:37,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 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 14:47:37,270 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 373 transitions. [2021-11-04 14:47:37,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-04 14:47:37,271 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 14:47:37,271 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:47:37,290 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 14:47:37,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 14:47:37,491 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 14:47:37,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 14:47:37,491 INFO L85 PathProgramCache]: Analyzing trace with hash 32737814, now seen corresponding path program 1 times [2021-11-04 14:47:37,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 14:47:37,491 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393015690] [2021-11-04 14:47:37,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:47:37,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 14:47:37,503 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 14:47:37,503 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1557481138] [2021-11-04 14:47:37,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:47:37,503 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 14:47:37,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 14:47:37,505 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 14:47:37,506 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 14:47:37,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 14:47:37,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-04 14:47:37,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 14:47:37,866 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 14:47:37,866 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 14:47:37,866 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 14:47:37,867 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393015690] [2021-11-04 14:47:37,867 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 14:47:37,867 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1557481138] [2021-11-04 14:47:37,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1557481138] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 14:47:37,867 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 14:47:37,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 14:47:37,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849707952] [2021-11-04 14:47:37,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 14:47:37,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 14:47:37,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 14:47:37,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 14:47:37,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 14:47:37,869 INFO L87 Difference]: Start difference. First operand 301 states and 373 transitions. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 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 14:47:38,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 14:47:38,761 INFO L93 Difference]: Finished difference Result 680 states and 844 transitions. [2021-11-04 14:47:38,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-04 14:47:38,761 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 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 140 [2021-11-04 14:47:38,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 14:47:38,763 INFO L225 Difference]: With dead ends: 680 [2021-11-04 14:47:38,763 INFO L226 Difference]: Without dead ends: 382 [2021-11-04 14:47:38,763 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.77ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 14:47:38,764 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 314 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 956 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 714.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.53ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 956 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 865.82ms IncrementalHoareTripleChecker+Time [2021-11-04 14:47:38,764 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [314 Valid, 0 Invalid, 980 Unknown, 0 Unchecked, 2.53ms Time], IncrementalHoareTripleChecker [24 Valid, 956 Invalid, 0 Unknown, 0 Unchecked, 865.82ms Time] [2021-11-04 14:47:38,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2021-11-04 14:47:38,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 287. [2021-11-04 14:47:38,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 281 states have (on average 1.2526690391459074) internal successors, (352), 286 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 14:47:38,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 352 transitions. [2021-11-04 14:47:38,770 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 352 transitions. Word has length 140 [2021-11-04 14:47:38,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 14:47:38,770 INFO L470 AbstractCegarLoop]: Abstraction has 287 states and 352 transitions. [2021-11-04 14:47:38,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 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 14:47:38,770 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 352 transitions. [2021-11-04 14:47:38,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-04 14:47:38,777 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 14:47:38,777 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:47:38,798 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 14:47:38,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 14:47:38,996 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 14:47:38,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 14:47:38,996 INFO L85 PathProgramCache]: Analyzing trace with hash -577227484, now seen corresponding path program 1 times [2021-11-04 14:47:38,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 14:47:38,996 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953173573] [2021-11-04 14:47:38,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:47:38,997 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 14:47:39,008 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 14:47:39,008 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2009802514] [2021-11-04 14:47:39,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:47:39,009 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 14:47:39,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 14:47:39,010 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 14:47:39,015 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 14:47:39,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 14:47:39,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-04 14:47:39,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 14:47:39,341 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-04 14:47:39,341 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 14:47:39,341 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 14:47:39,341 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953173573] [2021-11-04 14:47:39,342 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 14:47:39,342 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2009802514] [2021-11-04 14:47:39,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2009802514] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 14:47:39,342 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 14:47:39,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 14:47:39,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634572018] [2021-11-04 14:47:39,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 14:47:39,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 14:47:39,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 14:47:39,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 14:47:39,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 14:47:39,343 INFO L87 Difference]: Start difference. First operand 287 states and 352 transitions. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 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 14:47:40,666 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 14:47:41,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 14:47:41,248 INFO L93 Difference]: Finished difference Result 379 states and 468 transitions. [2021-11-04 14:47:41,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-04 14:47:41,248 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 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 140 [2021-11-04 14:47:41,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 14:47:41,250 INFO L225 Difference]: With dead ends: 379 [2021-11-04 14:47:41,250 INFO L226 Difference]: Without dead ends: 278 [2021-11-04 14:47:41,250 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.42ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 14:47:41,250 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 95 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 839 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1761.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.25ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 839 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1881.42ms IncrementalHoareTripleChecker+Time [2021-11-04 14:47:41,251 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 0 Invalid, 863 Unknown, 0 Unchecked, 2.25ms Time], IncrementalHoareTripleChecker [24 Valid, 839 Invalid, 0 Unknown, 0 Unchecked, 1881.42ms Time] [2021-11-04 14:47:41,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2021-11-04 14:47:41,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 273. [2021-11-04 14:47:41,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 267 states have (on average 1.2397003745318351) internal successors, (331), 272 states have internal predecessors, (331), 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 14:47:41,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 331 transitions. [2021-11-04 14:47:41,257 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 331 transitions. Word has length 140 [2021-11-04 14:47:41,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 14:47:41,258 INFO L470 AbstractCegarLoop]: Abstraction has 273 states and 331 transitions. [2021-11-04 14:47:41,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 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 14:47:41,258 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 331 transitions. [2021-11-04 14:47:41,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-04 14:47:41,259 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 14:47:41,259 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:47:41,280 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 14:47:41,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 14:47:41,472 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 14:47:41,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 14:47:41,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1460076330, now seen corresponding path program 1 times [2021-11-04 14:47:41,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 14:47:41,472 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930129183] [2021-11-04 14:47:41,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:47:41,472 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 14:47:41,483 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 14:47:41,483 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [252341308] [2021-11-04 14:47:41,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:47:41,484 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 14:47:41,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 14:47:41,486 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 14:47:41,487 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 14:47:41,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 14:47:41,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-04 14:47:41,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 14:47:41,848 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 14:47:41,848 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-04 14:47:42,063 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 14:47:42,063 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 14:47:42,063 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930129183] [2021-11-04 14:47:42,063 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 14:47:42,063 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [252341308] [2021-11-04 14:47:42,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [252341308] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-04 14:47:42,064 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-04 14:47:42,064 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-11-04 14:47:42,064 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072157165] [2021-11-04 14:47:42,064 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-04 14:47:42,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-04 14:47:42,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 14:47:42,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-04 14:47:42,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-04 14:47:42,065 INFO L87 Difference]: Start difference. First operand 273 states and 331 transitions. Second operand has 6 states, 6 states have (on average 40.0) internal successors, (240), 6 states have internal predecessors, (240), 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 14:47:43,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 14:47:43,578 INFO L93 Difference]: Finished difference Result 1081 states and 1313 transitions. [2021-11-04 14:47:43,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-04 14:47:43,579 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 40.0) internal successors, (240), 6 states have internal predecessors, (240), 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 140 [2021-11-04 14:47:43,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 14:47:43,581 INFO L225 Difference]: With dead ends: 1081 [2021-11-04 14:47:43,582 INFO L226 Difference]: Without dead ends: 993 [2021-11-04 14:47:43,582 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.83ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-04 14:47:43,582 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2059 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 1141 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1163.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2059 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.78ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1444.83ms IncrementalHoareTripleChecker+Time [2021-11-04 14:47:43,582 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2059 Valid, 0 Invalid, 1152 Unknown, 0 Unchecked, 6.78ms Time], IncrementalHoareTripleChecker [11 Valid, 1141 Invalid, 0 Unknown, 0 Unchecked, 1444.83ms Time] [2021-11-04 14:47:43,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 993 states. [2021-11-04 14:47:43,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 993 to 819. [2021-11-04 14:47:43,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 819 states, 813 states have (on average 1.2263222632226323) internal successors, (997), 818 states have internal predecessors, (997), 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 14:47:43,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 997 transitions. [2021-11-04 14:47:43,600 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 997 transitions. Word has length 140 [2021-11-04 14:47:43,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 14:47:43,601 INFO L470 AbstractCegarLoop]: Abstraction has 819 states and 997 transitions. [2021-11-04 14:47:43,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 40.0) internal successors, (240), 6 states have internal predecessors, (240), 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 14:47:43,601 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 997 transitions. [2021-11-04 14:47:43,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2021-11-04 14:47:43,605 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 14:47:43,605 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 14:47:43,623 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 14:47:43,823 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,SelfDestructingSolverStorable8 [2021-11-04 14:47:43,824 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 14:47:43,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 14:47:43,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1752556443, now seen corresponding path program 2 times [2021-11-04 14:47:43,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 14:47:43,824 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578921647] [2021-11-04 14:47:43,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:47:43,825 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 14:47:43,852 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 14:47:43,854 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1756815146] [2021-11-04 14:47:43,854 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-04 14:47:43,854 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 14:47:43,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 14:47:43,855 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 14:47:43,856 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 14:47:44,121 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-04 14:47:44,121 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-04 14:47:44,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 1091 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-04 14:47:44,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 14:47:44,874 INFO L134 CoverageAnalysis]: Checked inductivity of 592 backedges. 0 proven. 592 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 14:47:44,874 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-04 14:47:45,584 INFO L134 CoverageAnalysis]: Checked inductivity of 592 backedges. 0 proven. 592 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 14:47:45,584 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 14:47:45,584 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578921647] [2021-11-04 14:47:45,584 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 14:47:45,584 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756815146] [2021-11-04 14:47:45,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1756815146] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-04 14:47:45,584 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-04 14:47:45,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-11-04 14:47:45,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185478586] [2021-11-04 14:47:45,585 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-04 14:47:45,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-04 14:47:45,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 14:47:45,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-04 14:47:45,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-11-04 14:47:45,586 INFO L87 Difference]: Start difference. First operand 819 states and 997 transitions. Second operand has 12 states, 12 states have (on average 69.0) internal successors, (828), 12 states have internal predecessors, (828), 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 14:47:49,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 14:47:49,186 INFO L93 Difference]: Finished difference Result 2434 states and 2960 transitions. [2021-11-04 14:47:49,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-04 14:47:49,186 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 69.0) internal successors, (828), 12 states have internal predecessors, (828), 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 434 [2021-11-04 14:47:49,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 14:47:49,193 INFO L225 Difference]: With dead ends: 2434 [2021-11-04 14:47:49,193 INFO L226 Difference]: Without dead ends: 2346 [2021-11-04 14:47:49,194 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 866 GetRequests, 856 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 38.39ms TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-11-04 14:47:49,194 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 4276 mSDsluCounter, 2539 mSDsCounter, 0 mSdLazyCounter, 2898 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2860.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4276 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.98ms SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 2898 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3469.81ms IncrementalHoareTripleChecker+Time [2021-11-04 14:47:49,195 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4276 Valid, 0 Invalid, 2918 Unknown, 0 Unchecked, 19.98ms Time], IncrementalHoareTripleChecker [20 Valid, 2898 Invalid, 0 Unknown, 0 Unchecked, 3469.81ms Time] [2021-11-04 14:47:49,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2346 states. [2021-11-04 14:47:49,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2346 to 1911. [2021-11-04 14:47:49,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1911 states, 1905 states have (on average 1.2225721784776904) internal successors, (2329), 1910 states have internal predecessors, (2329), 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 14:47:49,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1911 states to 1911 states and 2329 transitions. [2021-11-04 14:47:49,228 INFO L78 Accepts]: Start accepts. Automaton has 1911 states and 2329 transitions. Word has length 434 [2021-11-04 14:47:49,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 14:47:49,228 INFO L470 AbstractCegarLoop]: Abstraction has 1911 states and 2329 transitions. [2021-11-04 14:47:49,229 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 69.0) internal successors, (828), 12 states have internal predecessors, (828), 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 14:47:49,229 INFO L276 IsEmpty]: Start isEmpty. Operand 1911 states and 2329 transitions. [2021-11-04 14:47:49,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1023 [2021-11-04 14:47:49,247 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 14:47:49,247 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:47:49,269 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 14:47:49,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-04 14:47:49,462 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 14:47:49,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 14:47:49,463 INFO L85 PathProgramCache]: Analyzing trace with hash -675748379, now seen corresponding path program 3 times [2021-11-04 14:47:49,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 14:47:49,463 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666789275] [2021-11-04 14:47:49,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:47:49,463 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 14:47:49,494 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 14:47:49,494 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [766778628] [2021-11-04 14:47:49,495 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-04 14:47:49,495 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 14:47:49,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 14:47:49,496 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 14:47:49,497 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 14:47:49,737 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-04 14:47:49,737 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-04 14:47:49,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-04 14:47:49,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 14:47:53,189 INFO L134 CoverageAnalysis]: Checked inductivity of 4420 backedges. 145 proven. 0 refuted. 0 times theorem prover too weak. 4275 trivial. 0 not checked. [2021-11-04 14:47:53,190 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 14:47:53,190 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 14:47:53,190 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666789275] [2021-11-04 14:47:53,190 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 14:47:53,190 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [766778628] [2021-11-04 14:47:53,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [766778628] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 14:47:53,191 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 14:47:53,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 14:47:53,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738216698] [2021-11-04 14:47:53,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 14:47:53,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 14:47:53,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 14:47:53,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 14:47:53,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 14:47:53,192 INFO L87 Difference]: Start difference. First operand 1911 states and 2329 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 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 14:47:53,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 14:47:53,781 INFO L93 Difference]: Finished difference Result 3746 states and 4565 transitions. [2021-11-04 14:47:53,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 14:47:53,782 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 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 1022 [2021-11-04 14:47:53,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 14:47:53,787 INFO L225 Difference]: With dead ends: 3746 [2021-11-04 14:47:53,787 INFO L226 Difference]: Without dead ends: 1980 [2021-11-04 14:47:53,789 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1021 GetRequests, 1020 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.92ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 14:47:53,789 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 149 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 653 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 470.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.78ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 566.25ms IncrementalHoareTripleChecker+Time [2021-11-04 14:47:53,790 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [149 Valid, 0 Invalid, 656 Unknown, 0 Unchecked, 0.78ms Time], IncrementalHoareTripleChecker [3 Valid, 653 Invalid, 0 Unknown, 0 Unchecked, 566.25ms Time] [2021-11-04 14:47:53,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1980 states. [2021-11-04 14:47:53,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1980 to 1968. [2021-11-04 14:47:53,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1968 states, 1962 states have (on average 1.2237512742099899) internal successors, (2401), 1967 states have internal predecessors, (2401), 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 14:47:53,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1968 states to 1968 states and 2401 transitions. [2021-11-04 14:47:53,818 INFO L78 Accepts]: Start accepts. Automaton has 1968 states and 2401 transitions. Word has length 1022 [2021-11-04 14:47:53,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 14:47:53,818 INFO L470 AbstractCegarLoop]: Abstraction has 1968 states and 2401 transitions. [2021-11-04 14:47:53,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 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 14:47:53,819 INFO L276 IsEmpty]: Start isEmpty. Operand 1968 states and 2401 transitions. [2021-11-04 14:47:53,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1030 [2021-11-04 14:47:53,827 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 14:47:53,827 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:47:53,847 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 14:47:54,039 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,SelfDestructingSolverStorable10 [2021-11-04 14:47:54,040 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 14:47:54,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 14:47:54,040 INFO L85 PathProgramCache]: Analyzing trace with hash -680932187, now seen corresponding path program 1 times [2021-11-04 14:47:54,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 14:47:54,041 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665802355] [2021-11-04 14:47:54,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:47:54,041 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 14:47:54,071 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 14:47:54,071 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1912408270] [2021-11-04 14:47:54,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:47:54,072 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 14:47:54,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 14:47:54,073 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 14:47:54,074 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 14:47:54,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 14:47:54,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 2633 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-04 14:47:54,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 14:47:55,758 INFO L134 CoverageAnalysis]: Checked inductivity of 4402 backedges. 748 proven. 0 refuted. 0 times theorem prover too weak. 3654 trivial. 0 not checked. [2021-11-04 14:47:55,759 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 14:47:55,759 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 14:47:55,759 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665802355] [2021-11-04 14:47:55,759 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 14:47:55,759 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1912408270] [2021-11-04 14:47:55,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1912408270] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 14:47:55,759 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 14:47:55,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 14:47:55,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667187848] [2021-11-04 14:47:55,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 14:47:55,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 14:47:55,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 14:47:55,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 14:47:55,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 14:47:55,761 INFO L87 Difference]: Start difference. First operand 1968 states and 2401 transitions. Second operand has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 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 14:47:56,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 14:47:56,412 INFO L93 Difference]: Finished difference Result 3924 states and 4823 transitions. [2021-11-04 14:47:56,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 14:47:56,413 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 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 1029 [2021-11-04 14:47:56,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 14:47:56,418 INFO L225 Difference]: With dead ends: 3924 [2021-11-04 14:47:56,418 INFO L226 Difference]: Without dead ends: 2008 [2021-11-04 14:47:56,420 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1028 GetRequests, 1027 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.77ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 14:47:56,421 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 620 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 529.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.80ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 627.73ms IncrementalHoareTripleChecker+Time [2021-11-04 14:47:56,421 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 626 Unknown, 0 Unchecked, 0.80ms Time], IncrementalHoareTripleChecker [6 Valid, 620 Invalid, 0 Unknown, 0 Unchecked, 627.73ms Time] [2021-11-04 14:47:56,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2008 states. [2021-11-04 14:47:56,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2008 to 2008. [2021-11-04 14:47:56,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2008 states, 2002 states have (on average 1.2192807192807193) internal successors, (2441), 2007 states have internal predecessors, (2441), 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 14:47:56,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2008 states to 2008 states and 2441 transitions. [2021-11-04 14:47:56,453 INFO L78 Accepts]: Start accepts. Automaton has 2008 states and 2441 transitions. Word has length 1029 [2021-11-04 14:47:56,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 14:47:56,454 INFO L470 AbstractCegarLoop]: Abstraction has 2008 states and 2441 transitions. [2021-11-04 14:47:56,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 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 14:47:56,454 INFO L276 IsEmpty]: Start isEmpty. Operand 2008 states and 2441 transitions. [2021-11-04 14:47:56,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1032 [2021-11-04 14:47:56,462 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 14:47:56,462 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:47:56,488 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 14:47:56,671 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,SelfDestructingSolverStorable11 [2021-11-04 14:47:56,672 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 14:47:56,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 14:47:56,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1832465830, now seen corresponding path program 1 times [2021-11-04 14:47:56,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 14:47:56,673 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299505089] [2021-11-04 14:47:56,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:47:56,673 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 14:47:56,700 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 14:47:56,700 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [857577360] [2021-11-04 14:47:56,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:47:56,701 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 14:47:56,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 14:47:56,702 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 14:47:56,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-04 14:47:57,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 14:47:57,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 2645 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-04 14:47:57,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 14:47:58,439 INFO L134 CoverageAnalysis]: Checked inductivity of 4404 backedges. 748 proven. 1 refuted. 0 times theorem prover too weak. 3655 trivial. 0 not checked. [2021-11-04 14:47:58,439 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-04 14:47:59,830 INFO L134 CoverageAnalysis]: Checked inductivity of 4404 backedges. 748 proven. 1 refuted. 0 times theorem prover too weak. 3655 trivial. 0 not checked. [2021-11-04 14:47:59,830 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 14:47:59,831 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299505089] [2021-11-04 14:47:59,831 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 14:47:59,831 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [857577360] [2021-11-04 14:47:59,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [857577360] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-04 14:47:59,831 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-04 14:47:59,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-11-04 14:47:59,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94917439] [2021-11-04 14:47:59,832 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-04 14:47:59,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-04 14:47:59,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 14:47:59,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-04 14:47:59,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-04 14:47:59,833 INFO L87 Difference]: Start difference. First operand 2008 states and 2441 transitions. Second operand has 6 states, 6 states have (on average 39.5) internal successors, (237), 6 states have internal predecessors, (237), 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 14:48:00,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 14:48:00,791 INFO L93 Difference]: Finished difference Result 4083 states and 5062 transitions. [2021-11-04 14:48:00,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-04 14:48:00,792 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 39.5) internal successors, (237), 6 states have internal predecessors, (237), 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 1031 [2021-11-04 14:48:00,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 14:48:00,797 INFO L225 Difference]: With dead ends: 4083 [2021-11-04 14:48:00,797 INFO L226 Difference]: Without dead ends: 2128 [2021-11-04 14:48:00,799 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2060 GetRequests, 2056 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.74ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-04 14:48:00,799 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 882 mSDsCounter, 0 mSdLazyCounter, 1240 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 781.15ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.84ms SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 925.34ms IncrementalHoareTripleChecker+Time [2021-11-04 14:48:00,800 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 1267 Unknown, 0 Unchecked, 1.84ms Time], IncrementalHoareTripleChecker [27 Valid, 1240 Invalid, 0 Unknown, 0 Unchecked, 925.34ms Time] [2021-11-04 14:48:00,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2128 states. [2021-11-04 14:48:00,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2128 to 2128. [2021-11-04 14:48:00,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2128 states, 2122 states have (on average 1.206880301602262) internal successors, (2561), 2127 states have internal predecessors, (2561), 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 14:48:00,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2128 states to 2128 states and 2561 transitions. [2021-11-04 14:48:00,832 INFO L78 Accepts]: Start accepts. Automaton has 2128 states and 2561 transitions. Word has length 1031 [2021-11-04 14:48:00,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 14:48:00,832 INFO L470 AbstractCegarLoop]: Abstraction has 2128 states and 2561 transitions. [2021-11-04 14:48:00,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 39.5) internal successors, (237), 6 states have internal predecessors, (237), 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 14:48:00,833 INFO L276 IsEmpty]: Start isEmpty. Operand 2128 states and 2561 transitions. [2021-11-04 14:48:00,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1038 [2021-11-04 14:48:00,841 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 14:48:00,841 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:48:00,867 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-04 14:48:01,060 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-04 14:48:01,061 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 14:48:01,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 14:48:01,061 INFO L85 PathProgramCache]: Analyzing trace with hash 262001125, now seen corresponding path program 2 times [2021-11-04 14:48:01,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 14:48:01,061 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089805140] [2021-11-04 14:48:01,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:48:01,061 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 14:48:01,090 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 14:48:01,091 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [510183561] [2021-11-04 14:48:01,091 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-04 14:48:01,091 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 14:48:01,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 14:48:01,092 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 14:48:01,093 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-04 14:48:01,630 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-04 14:48:01,630 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-04 14:48:01,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 2681 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-04 14:48:01,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 14:48:02,853 INFO L134 CoverageAnalysis]: Checked inductivity of 4422 backedges. 748 proven. 10 refuted. 0 times theorem prover too weak. 3664 trivial. 0 not checked. [2021-11-04 14:48:02,853 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-04 14:48:04,199 INFO L134 CoverageAnalysis]: Checked inductivity of 4422 backedges. 748 proven. 10 refuted. 0 times theorem prover too weak. 3664 trivial. 0 not checked. [2021-11-04 14:48:04,199 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 14:48:04,199 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089805140] [2021-11-04 14:48:04,200 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 14:48:04,200 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510183561] [2021-11-04 14:48:04,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [510183561] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-04 14:48:04,200 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-04 14:48:04,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-11-04 14:48:04,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610924336] [2021-11-04 14:48:04,200 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-04 14:48:04,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-04 14:48:04,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 14:48:04,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-04 14:48:04,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-11-04 14:48:04,202 INFO L87 Difference]: Start difference. First operand 2128 states and 2561 transitions. Second operand has 12 states, 12 states have (on average 20.25) internal successors, (243), 12 states have internal predecessors, (243), 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 14:48:05,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 14:48:05,295 INFO L93 Difference]: Finished difference Result 4440 states and 5539 transitions. [2021-11-04 14:48:05,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-04 14:48:05,295 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 20.25) internal successors, (243), 12 states have internal predecessors, (243), 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 1037 [2021-11-04 14:48:05,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 14:48:05,301 INFO L225 Difference]: With dead ends: 4440 [2021-11-04 14:48:05,301 INFO L226 Difference]: Without dead ends: 2368 [2021-11-04 14:48:05,303 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2072 GetRequests, 2062 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 58.98ms TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-11-04 14:48:05,303 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 588 mSDsCounter, 0 mSdLazyCounter, 960 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 898.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1052 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.49ms SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 960 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1049.46ms IncrementalHoareTripleChecker+Time [2021-11-04 14:48:05,304 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 1052 Unknown, 0 Unchecked, 1.49ms Time], IncrementalHoareTripleChecker [92 Valid, 960 Invalid, 0 Unknown, 0 Unchecked, 1049.46ms Time] [2021-11-04 14:48:05,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2368 states. [2021-11-04 14:48:05,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2368 to 2368. [2021-11-04 14:48:05,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2368 states, 2362 states have (on average 1.1858594411515664) internal successors, (2801), 2367 states have internal predecessors, (2801), 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 14:48:05,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2368 states to 2368 states and 2801 transitions. [2021-11-04 14:48:05,342 INFO L78 Accepts]: Start accepts. Automaton has 2368 states and 2801 transitions. Word has length 1037 [2021-11-04 14:48:05,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 14:48:05,342 INFO L470 AbstractCegarLoop]: Abstraction has 2368 states and 2801 transitions. [2021-11-04 14:48:05,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 20.25) internal successors, (243), 12 states have internal predecessors, (243), 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 14:48:05,343 INFO L276 IsEmpty]: Start isEmpty. Operand 2368 states and 2801 transitions. [2021-11-04 14:48:05,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1050 [2021-11-04 14:48:05,351 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 14:48:05,351 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:48:05,381 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-04 14:48:05,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-04 14:48:05,564 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-04 14:48:05,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 14:48:05,564 INFO L85 PathProgramCache]: Analyzing trace with hash -1261568571, now seen corresponding path program 3 times [2021-11-04 14:48:05,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 14:48:05,564 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133508108] [2021-11-04 14:48:05,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:48:05,564 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 14:48:05,601 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 14:48:05,601 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1739137950] [2021-11-04 14:48:05,601 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-04 14:48:05,601 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 14:48:05,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 14:48:05,602 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 14:48:05,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-04 14:48:05,865 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-04 14:48:05,865 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-04 14:48:05,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-04 14:48:05,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 14:48:09,215 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 566 proven. 0 refuted. 0 times theorem prover too weak. 3946 trivial. 0 not checked. [2021-11-04 14:48:09,215 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 14:48:09,215 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 14:48:09,215 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133508108] [2021-11-04 14:48:09,215 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 14:48:09,215 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1739137950] [2021-11-04 14:48:09,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1739137950] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 14:48:09,216 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 14:48:09,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 14:48:09,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362713442] [2021-11-04 14:48:09,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 14:48:09,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 14:48:09,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 14:48:09,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 14:48:09,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 14:48:09,217 INFO L87 Difference]: Start difference. First operand 2368 states and 2801 transitions. Second operand has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 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 14:48:09,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 14:48:09,728 INFO L93 Difference]: Finished difference Result 4658 states and 5516 transitions. [2021-11-04 14:48:09,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 14:48:09,729 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 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 1049 [2021-11-04 14:48:09,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 14:48:09,734 INFO L225 Difference]: With dead ends: 4658 [2021-11-04 14:48:09,734 INFO L226 Difference]: Without dead ends: 2366 [2021-11-04 14:48:09,736 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1048 GetRequests, 1047 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.24ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 14:48:09,737 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 19 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 612 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 394.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.72ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 478.57ms IncrementalHoareTripleChecker+Time [2021-11-04 14:48:09,737 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 0 Invalid, 613 Unknown, 0 Unchecked, 0.72ms Time], IncrementalHoareTripleChecker [1 Valid, 612 Invalid, 0 Unknown, 0 Unchecked, 478.57ms Time] [2021-11-04 14:48:09,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2366 states. [2021-11-04 14:48:09,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2366 to 2366. [2021-11-04 14:48:09,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2366 states, 2360 states have (on average 1.185593220338983) internal successors, (2798), 2365 states have internal predecessors, (2798), 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 14:48:09,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2366 states to 2366 states and 2798 transitions. [2021-11-04 14:48:09,788 INFO L78 Accepts]: Start accepts. Automaton has 2366 states and 2798 transitions. Word has length 1049 [2021-11-04 14:48:09,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 14:48:09,788 INFO L470 AbstractCegarLoop]: Abstraction has 2366 states and 2798 transitions. [2021-11-04 14:48:09,788 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 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 14:48:09,789 INFO L276 IsEmpty]: Start isEmpty. Operand 2366 states and 2798 transitions. [2021-11-04 14:48:09,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1077 [2021-11-04 14:48:09,797 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 14:48:09,798 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:48:09,823 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-04 14:48:10,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 14:48:10,008 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-04 14:48:10,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 14:48:10,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1857330421, now seen corresponding path program 1 times [2021-11-04 14:48:10,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 14:48:10,008 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819745038] [2021-11-04 14:48:10,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:48:10,009 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 14:48:10,034 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 14:48:10,034 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1777092661] [2021-11-04 14:48:10,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:48:10,034 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 14:48:10,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 14:48:10,036 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 14:48:10,036 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-04 14:48:10,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 14:48:10,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 2957 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-04 14:48:10,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 14:48:11,862 INFO L134 CoverageAnalysis]: Checked inductivity of 4604 backedges. 325 proven. 55 refuted. 0 times theorem prover too weak. 4224 trivial. 0 not checked. [2021-11-04 14:48:11,862 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-04 14:48:13,384 INFO L134 CoverageAnalysis]: Checked inductivity of 4604 backedges. 325 proven. 55 refuted. 0 times theorem prover too weak. 4224 trivial. 0 not checked. [2021-11-04 14:48:13,385 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 14:48:13,385 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819745038] [2021-11-04 14:48:13,385 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 14:48:13,385 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1777092661] [2021-11-04 14:48:13,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1777092661] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-04 14:48:13,385 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-04 14:48:13,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2021-11-04 14:48:13,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467461165] [2021-11-04 14:48:13,385 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-04 14:48:13,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-04 14:48:13,386 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 14:48:13,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-04 14:48:13,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-11-04 14:48:13,387 INFO L87 Difference]: Start difference. First operand 2366 states and 2798 transitions. Second operand has 24 states, 24 states have (on average 9.166666666666666) internal successors, (220), 24 states have internal predecessors, (220), 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 14:48:14,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 14:48:14,324 INFO L93 Difference]: Finished difference Result 5152 states and 6490 transitions. [2021-11-04 14:48:14,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-04 14:48:14,325 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 9.166666666666666) internal successors, (220), 24 states have internal predecessors, (220), 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 1076 [2021-11-04 14:48:14,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 14:48:14,331 INFO L225 Difference]: With dead ends: 5152 [2021-11-04 14:48:14,331 INFO L226 Difference]: Without dead ends: 2846 [2021-11-04 14:48:14,333 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2150 GetRequests, 2128 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 216.59ms TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-11-04 14:48:14,333 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 588 mSDsCounter, 0 mSdLazyCounter, 1008 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 726.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.92ms SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 1008 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 876.02ms IncrementalHoareTripleChecker+Time [2021-11-04 14:48:14,334 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 1266 Unknown, 0 Unchecked, 1.92ms Time], IncrementalHoareTripleChecker [258 Valid, 1008 Invalid, 0 Unknown, 0 Unchecked, 876.02ms Time] [2021-11-04 14:48:14,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2846 states. [2021-11-04 14:48:14,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2846 to 2846. [2021-11-04 14:48:14,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2846 states, 2840 states have (on average 1.154225352112676) internal successors, (3278), 2845 states have internal predecessors, (3278), 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 14:48:14,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2846 states to 2846 states and 3278 transitions. [2021-11-04 14:48:14,380 INFO L78 Accepts]: Start accepts. Automaton has 2846 states and 3278 transitions. Word has length 1076 [2021-11-04 14:48:14,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 14:48:14,380 INFO L470 AbstractCegarLoop]: Abstraction has 2846 states and 3278 transitions. [2021-11-04 14:48:14,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 9.166666666666666) internal successors, (220), 24 states have internal predecessors, (220), 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 14:48:14,381 INFO L276 IsEmpty]: Start isEmpty. Operand 2846 states and 3278 transitions. [2021-11-04 14:48:14,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1125 [2021-11-04 14:48:14,390 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 14:48:14,391 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:48:14,420 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-04 14:48:14,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-04 14:48:14,612 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-04 14:48:14,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 14:48:14,612 INFO L85 PathProgramCache]: Analyzing trace with hash -242572171, now seen corresponding path program 2 times [2021-11-04 14:48:14,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 14:48:14,612 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579830323] [2021-11-04 14:48:14,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:48:14,612 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 14:48:14,642 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 14:48:14,642 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [722837250] [2021-11-04 14:48:14,642 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-04 14:48:14,643 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 14:48:14,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 14:48:14,644 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 14:48:14,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-04 14:48:15,219 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-04 14:48:15,219 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-04 14:48:15,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 3245 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-04 14:48:15,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 14:48:16,740 INFO L134 CoverageAnalysis]: Checked inductivity of 5396 backedges. 325 proven. 253 refuted. 0 times theorem prover too weak. 4818 trivial. 0 not checked. [2021-11-04 14:48:16,741 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-04 14:48:18,875 INFO L134 CoverageAnalysis]: Checked inductivity of 5396 backedges. 325 proven. 253 refuted. 0 times theorem prover too weak. 4818 trivial. 0 not checked. [2021-11-04 14:48:18,875 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 14:48:18,875 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579830323] [2021-11-04 14:48:18,876 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 14:48:18,876 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [722837250] [2021-11-04 14:48:18,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [722837250] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-04 14:48:18,876 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-04 14:48:18,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 48 [2021-11-04 14:48:18,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938791087] [2021-11-04 14:48:18,876 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-04 14:48:18,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-11-04 14:48:18,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 14:48:18,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-11-04 14:48:18,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1127, Invalid=1129, Unknown=0, NotChecked=0, Total=2256 [2021-11-04 14:48:18,878 INFO L87 Difference]: Start difference. First operand 2846 states and 3278 transitions. Second operand has 48 states, 48 states have (on average 5.083333333333333) internal successors, (244), 48 states have internal predecessors, (244), 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 14:48:21,408 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 14:48:22,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 14:48:22,547 INFO L93 Difference]: Finished difference Result 6500 states and 8238 transitions. [2021-11-04 14:48:22,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-11-04 14:48:22,547 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 5.083333333333333) internal successors, (244), 48 states have internal predecessors, (244), 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 1124 [2021-11-04 14:48:22,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 14:48:22,556 INFO L225 Difference]: With dead ends: 6500 [2021-11-04 14:48:22,556 INFO L226 Difference]: Without dead ends: 3726 [2021-11-04 14:48:22,559 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2246 GetRequests, 2200 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 936.10ms TimeCoverageRelationStatistics Valid=1127, Invalid=1129, Unknown=0, NotChecked=0, Total=2256 [2021-11-04 14:48:22,559 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 2352 mSDsCounter, 0 mSdLazyCounter, 2924 mSolverCounterSat, 535 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3085.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.43ms SdHoareTripleChecker+Time, 535 IncrementalHoareTripleChecker+Valid, 2924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3503.86ms IncrementalHoareTripleChecker+Time [2021-11-04 14:48:22,559 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 3459 Unknown, 0 Unchecked, 5.43ms Time], IncrementalHoareTripleChecker [535 Valid, 2924 Invalid, 0 Unknown, 0 Unchecked, 3503.86ms Time] [2021-11-04 14:48:22,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3726 states. [2021-11-04 14:48:22,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3726 to 3726. [2021-11-04 14:48:22,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3726 states, 3720 states have (on average 1.117741935483871) internal successors, (4158), 3725 states have internal predecessors, (4158), 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 14:48:22,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3726 states to 3726 states and 4158 transitions. [2021-11-04 14:48:22,632 INFO L78 Accepts]: Start accepts. Automaton has 3726 states and 4158 transitions. Word has length 1124 [2021-11-04 14:48:22,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 14:48:22,633 INFO L470 AbstractCegarLoop]: Abstraction has 3726 states and 4158 transitions. [2021-11-04 14:48:22,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 5.083333333333333) internal successors, (244), 48 states have internal predecessors, (244), 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 14:48:22,633 INFO L276 IsEmpty]: Start isEmpty. Operand 3726 states and 4158 transitions. [2021-11-04 14:48:22,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1213 [2021-11-04 14:48:22,645 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 14:48:22,646 INFO L514 BasicCegarLoop]: trace histogram [44, 44, 44, 44, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:48:22,674 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-04 14:48:22,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-04 14:48:22,859 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-04 14:48:22,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 14:48:22,860 INFO L85 PathProgramCache]: Analyzing trace with hash -872601035, now seen corresponding path program 3 times [2021-11-04 14:48:22,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 14:48:22,860 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222665615] [2021-11-04 14:48:22,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:48:22,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 14:48:22,888 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 14:48:22,888 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [388296086] [2021-11-04 14:48:22,888 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-04 14:48:22,888 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 14:48:22,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 14:48:22,889 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 14:48:22,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-04 14:48:23,197 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-04 14:48:23,197 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-04 14:48:23,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-04 14:48:23,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 14:48:24,591 INFO L134 CoverageAnalysis]: Checked inductivity of 8344 backedges. 143 proven. 0 refuted. 0 times theorem prover too weak. 8201 trivial. 0 not checked. [2021-11-04 14:48:24,591 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 14:48:24,591 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 14:48:24,592 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222665615] [2021-11-04 14:48:24,592 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 14:48:24,592 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388296086] [2021-11-04 14:48:24,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [388296086] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 14:48:24,592 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 14:48:24,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 14:48:24,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429062408] [2021-11-04 14:48:24,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 14:48:24,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 14:48:24,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 14:48:24,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 14:48:24,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 14:48:24,593 INFO L87 Difference]: Start difference. First operand 3726 states and 4158 transitions. Second operand has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 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 14:48:25,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 14:48:25,551 INFO L93 Difference]: Finished difference Result 8680 states and 9757 transitions. [2021-11-04 14:48:25,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 14:48:25,551 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 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 1212 [2021-11-04 14:48:25,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 14:48:25,581 INFO L225 Difference]: With dead ends: 8680 [2021-11-04 14:48:25,581 INFO L226 Difference]: Without dead ends: 5892 [2021-11-04 14:48:25,585 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1211 GetRequests, 1210 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.83ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 14:48:25,585 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 246 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 794 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 706.95ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.93ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 794 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 833.19ms IncrementalHoareTripleChecker+Time [2021-11-04 14:48:25,586 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [246 Valid, 0 Invalid, 796 Unknown, 0 Unchecked, 0.93ms Time], IncrementalHoareTripleChecker [2 Valid, 794 Invalid, 0 Unknown, 0 Unchecked, 833.19ms Time] [2021-11-04 14:48:25,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5892 states. [2021-11-04 14:48:25,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5892 to 5880. [2021-11-04 14:48:25,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5880 states, 5874 states have (on average 1.1280217909431394) internal successors, (6626), 5879 states have internal predecessors, (6626), 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 14:48:25,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5880 states to 5880 states and 6626 transitions. [2021-11-04 14:48:25,722 INFO L78 Accepts]: Start accepts. Automaton has 5880 states and 6626 transitions. Word has length 1212 [2021-11-04 14:48:25,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 14:48:25,722 INFO L470 AbstractCegarLoop]: Abstraction has 5880 states and 6626 transitions. [2021-11-04 14:48:25,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 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 14:48:25,723 INFO L276 IsEmpty]: Start isEmpty. Operand 5880 states and 6626 transitions. [2021-11-04 14:48:25,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1220 [2021-11-04 14:48:25,735 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 14:48:25,736 INFO L514 BasicCegarLoop]: trace histogram [44, 44, 44, 44, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:48:25,755 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-04 14:48:25,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-04 14:48:25,954 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-04 14:48:25,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 14:48:25,954 INFO L85 PathProgramCache]: Analyzing trace with hash -696970893, now seen corresponding path program 1 times [2021-11-04 14:48:25,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 14:48:25,955 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039180137] [2021-11-04 14:48:25,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:48:25,955 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 14:48:25,983 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 14:48:25,984 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [412437576] [2021-11-04 14:48:25,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:48:25,984 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 14:48:25,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 14:48:25,985 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 14:48:25,986 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-04 14:48:26,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 14:48:26,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 3798 conjuncts, 47 conjunts are in the unsatisfiable core [2021-11-04 14:48:26,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 14:48:28,791 INFO L134 CoverageAnalysis]: Checked inductivity of 8344 backedges. 325 proven. 990 refuted. 0 times theorem prover too weak. 7029 trivial. 0 not checked. [2021-11-04 14:48:28,791 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-04 14:48:33,969 INFO L134 CoverageAnalysis]: Checked inductivity of 8344 backedges. 325 proven. 990 refuted. 0 times theorem prover too weak. 7029 trivial. 0 not checked. [2021-11-04 14:48:33,969 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 14:48:33,969 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039180137] [2021-11-04 14:48:33,969 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 14:48:33,970 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [412437576] [2021-11-04 14:48:33,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [412437576] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-04 14:48:33,970 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-04 14:48:33,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 92 [2021-11-04 14:48:33,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714371651] [2021-11-04 14:48:33,970 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-04 14:48:33,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2021-11-04 14:48:33,971 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 14:48:33,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2021-11-04 14:48:33,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4186, Invalid=4186, Unknown=0, NotChecked=0, Total=8372 [2021-11-04 14:48:33,974 INFO L87 Difference]: Start difference. First operand 5880 states and 6626 transitions. Second operand has 92 states, 92 states have (on average 3.2065217391304346) internal successors, (295), 92 states have internal predecessors, (295), 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 14:48:36,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 14:48:36,430 INFO L93 Difference]: Finished difference Result 12907 states and 15680 transitions. [2021-11-04 14:48:36,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2021-11-04 14:48:36,430 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 92 states have (on average 3.2065217391304346) internal successors, (295), 92 states have internal predecessors, (295), 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 1219 [2021-11-04 14:48:36,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 14:48:36,440 INFO L225 Difference]: With dead ends: 12907 [2021-11-04 14:48:36,440 INFO L226 Difference]: Without dead ends: 7168 [2021-11-04 14:48:36,446 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2436 GetRequests, 2346 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4325.70ms TimeCoverageRelationStatistics Valid=4186, Invalid=4186, Unknown=0, NotChecked=0, Total=8372 [2021-11-04 14:48:36,447 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 1470 mSDsCounter, 0 mSdLazyCounter, 2116 mSolverCounterSat, 696 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1614.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.68ms SdHoareTripleChecker+Time, 696 IncrementalHoareTripleChecker+Valid, 2116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1987.29ms IncrementalHoareTripleChecker+Time [2021-11-04 14:48:36,447 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 2812 Unknown, 0 Unchecked, 4.68ms Time], IncrementalHoareTripleChecker [696 Valid, 2116 Invalid, 0 Unknown, 0 Unchecked, 1987.29ms Time] [2021-11-04 14:48:36,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7168 states. [2021-11-04 14:48:36,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7168 to 7168. [2021-11-04 14:48:36,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7168 states, 7162 states have (on average 1.1049986037419715) internal successors, (7914), 7167 states have internal predecessors, (7914), 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 14:48:36,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7168 states to 7168 states and 7914 transitions. [2021-11-04 14:48:36,646 INFO L78 Accepts]: Start accepts. Automaton has 7168 states and 7914 transitions. Word has length 1219 [2021-11-04 14:48:36,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 14:48:36,647 INFO L470 AbstractCegarLoop]: Abstraction has 7168 states and 7914 transitions. [2021-11-04 14:48:36,647 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 92 states have (on average 3.2065217391304346) internal successors, (295), 92 states have internal predecessors, (295), 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 14:48:36,647 INFO L276 IsEmpty]: Start isEmpty. Operand 7168 states and 7914 transitions. [2021-11-04 14:48:36,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1312 [2021-11-04 14:48:36,663 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 14:48:36,664 INFO L514 BasicCegarLoop]: trace histogram [90, 90, 44, 44, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:48:36,693 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2021-11-04 14:48:36,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 14:48:36,872 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-04 14:48:36,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 14:48:36,872 INFO L85 PathProgramCache]: Analyzing trace with hash 541272115, now seen corresponding path program 2 times [2021-11-04 14:48:36,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 14:48:36,872 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869344939] [2021-11-04 14:48:36,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:48:36,873 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 14:48:36,904 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 14:48:36,904 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2010828245] [2021-11-04 14:48:36,904 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-04 14:48:36,904 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 14:48:36,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 14:48:36,905 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 14:48:36,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-04 14:48:37,632 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-04 14:48:37,632 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-04 14:48:37,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 4350 conjuncts, 93 conjunts are in the unsatisfiable core [2021-11-04 14:48:37,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 14:48:42,127 INFO L134 CoverageAnalysis]: Checked inductivity of 14554 backedges. 325 proven. 4095 refuted. 0 times theorem prover too weak. 10134 trivial. 0 not checked. [2021-11-04 14:48:42,127 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-04 14:49:08,841 INFO L134 CoverageAnalysis]: Checked inductivity of 14554 backedges. 325 proven. 4095 refuted. 0 times theorem prover too weak. 10134 trivial. 0 not checked. [2021-11-04 14:49:08,841 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 14:49:08,842 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869344939] [2021-11-04 14:49:08,842 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 14:49:08,842 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2010828245] [2021-11-04 14:49:08,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2010828245] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-04 14:49:08,842 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-04 14:49:08,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 93] total 184 [2021-11-04 14:49:08,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526840855] [2021-11-04 14:49:08,843 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-04 14:49:08,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 184 states [2021-11-04 14:49:08,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 14:49:08,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 184 interpolants. [2021-11-04 14:49:08,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16836, Invalid=16836, Unknown=0, NotChecked=0, Total=33672 [2021-11-04 14:49:08,852 INFO L87 Difference]: Start difference. First operand 7168 states and 7914 transitions. Second operand has 184 states, 184 states have (on average 2.1032608695652173) internal successors, (387), 184 states have internal predecessors, (387), 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 14:49:14,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 14:49:14,424 INFO L93 Difference]: Finished difference Result 16725 states and 20786 transitions. [2021-11-04 14:49:14,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 184 states. [2021-11-04 14:49:14,425 INFO L78 Accepts]: Start accepts. Automaton has has 184 states, 184 states have (on average 2.1032608695652173) internal successors, (387), 184 states have internal predecessors, (387), 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 1311 [2021-11-04 14:49:14,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 14:49:14,439 INFO L225 Difference]: With dead ends: 16725 [2021-11-04 14:49:14,439 INFO L226 Difference]: Without dead ends: 9744 [2021-11-04 14:49:14,450 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2620 GetRequests, 2438 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 27620.16ms TimeCoverageRelationStatistics Valid=16836, Invalid=16836, Unknown=0, NotChecked=0, Total=33672 [2021-11-04 14:49:14,450 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 1176 mSDsCounter, 0 mSdLazyCounter, 1992 mSolverCounterSat, 1515 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2226.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.23ms SdHoareTripleChecker+Time, 1515 IncrementalHoareTripleChecker+Valid, 1992 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2857.25ms IncrementalHoareTripleChecker+Time [2021-11-04 14:49:14,451 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 3507 Unknown, 0 Unchecked, 7.23ms Time], IncrementalHoareTripleChecker [1515 Valid, 1992 Invalid, 0 Unknown, 0 Unchecked, 2857.25ms Time] [2021-11-04 14:49:14,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9744 states. [2021-11-04 14:49:14,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9744 to 9744. [2021-11-04 14:49:14,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9744 states, 9738 states have (on average 1.0772232491271307) internal successors, (10490), 9743 states have internal predecessors, (10490), 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 14:49:14,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9744 states to 9744 states and 10490 transitions. [2021-11-04 14:49:14,735 INFO L78 Accepts]: Start accepts. Automaton has 9744 states and 10490 transitions. Word has length 1311 [2021-11-04 14:49:14,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 14:49:14,735 INFO L470 AbstractCegarLoop]: Abstraction has 9744 states and 10490 transitions. [2021-11-04 14:49:14,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 184 states, 184 states have (on average 2.1032608695652173) internal successors, (387), 184 states have internal predecessors, (387), 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 14:49:14,735 INFO L276 IsEmpty]: Start isEmpty. Operand 9744 states and 10490 transitions. [2021-11-04 14:49:14,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1496 [2021-11-04 14:49:14,798 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 14:49:14,798 INFO L514 BasicCegarLoop]: trace histogram [182, 182, 44, 44, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:49:14,825 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-11-04 14:49:15,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 14:49:15,008 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-04 14:49:15,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 14:49:15,008 INFO L85 PathProgramCache]: Analyzing trace with hash 986838451, now seen corresponding path program 3 times [2021-11-04 14:49:15,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 14:49:15,008 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840512437] [2021-11-04 14:49:15,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 14:49:15,009 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 14:49:15,055 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 14:49:15,055 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [616662211] [2021-11-04 14:49:15,055 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-04 14:49:15,055 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 14:49:15,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 14:49:15,056 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 14:49:15,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process Killed by 15