./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5b36d44f Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1fe25077175322d8d5e3cefee67a534dcd61077607911040f354db1679589b09 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 22:37:04,447 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 22:37:04,450 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 22:37:04,505 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 22:37:04,506 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 22:37:04,508 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 22:37:04,510 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 22:37:04,514 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 22:37:04,515 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 22:37:04,519 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 22:37:04,536 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 22:37:04,538 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 22:37:04,538 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 22:37:04,540 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 22:37:04,543 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 22:37:04,546 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 22:37:04,548 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 22:37:04,548 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 22:37:04,550 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 22:37:04,554 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 22:37:04,555 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 22:37:04,556 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 22:37:04,557 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 22:37:04,558 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 22:37:04,563 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 22:37:04,563 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 22:37:04,563 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 22:37:04,565 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 22:37:04,565 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 22:37:04,566 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 22:37:04,566 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 22:37:04,567 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 22:37:04,568 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 22:37:04,569 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 22:37:04,570 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 22:37:04,570 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 22:37:04,570 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 22:37:04,570 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 22:37:04,571 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 22:37:04,572 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 22:37:04,572 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 22:37:04,573 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-07 22:37:04,604 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 22:37:04,604 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 22:37:04,605 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 22:37:04,605 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 22:37:04,606 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 22:37:04,606 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 22:37:04,606 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 22:37:04,606 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 22:37:04,606 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 22:37:04,606 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 22:37:04,607 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 22:37:04,607 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 22:37:04,607 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 22:37:04,608 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 22:37:04,608 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 22:37:04,608 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 22:37:04,608 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 22:37:04,608 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 22:37:04,608 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 22:37:04,608 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 22:37:04,609 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 22:37:04,609 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 22:37:04,609 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 22:37:04,609 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 22:37:04,609 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 22:37:04,609 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 22:37:04,609 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 22:37:04,610 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 22:37:04,611 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 22:37:04,611 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 22:37:04,611 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 22:37:04,611 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 22:37:04,611 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1fe25077175322d8d5e3cefee67a534dcd61077607911040f354db1679589b09 [2021-11-07 22:37:04,782 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 22:37:04,808 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 22:37:04,810 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 22:37:04,811 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 22:37:04,812 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 22:37:04,813 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-2.i [2021-11-07 22:37:04,853 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a15f4d84/163ce912155d4100ac03768baf81631e/FLAGcd01da136 [2021-11-07 22:37:05,333 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 22:37:05,334 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-2.i [2021-11-07 22:37:05,364 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a15f4d84/163ce912155d4100ac03768baf81631e/FLAGcd01da136 [2021-11-07 22:37:05,381 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a15f4d84/163ce912155d4100ac03768baf81631e [2021-11-07 22:37:05,383 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 22:37:05,384 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 22:37:05,387 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 22:37:05,387 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 22:37:05,390 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 22:37:05,390 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 10:37:05" (1/1) ... [2021-11-07 22:37:05,392 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c4723d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:37:05, skipping insertion in model container [2021-11-07 22:37:05,392 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 10:37:05" (1/1) ... [2021-11-07 22:37:05,396 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 22:37:05,435 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 22:37:05,677 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_SAX_test5-2.i[33021,33034] [2021-11-07 22:37:05,790 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_SAX_test5-2.i[49681,49694] [2021-11-07 22:37:05,814 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 22:37:05,832 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 22:37:05,858 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_SAX_test5-2.i[33021,33034] [2021-11-07 22:37:05,956 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_SAX_test5-2.i[49681,49694] [2021-11-07 22:37:05,964 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 22:37:05,992 INFO L208 MainTranslator]: Completed translation [2021-11-07 22:37:05,993 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:37:05 WrapperNode [2021-11-07 22:37:05,993 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 22:37:05,994 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 22:37:05,994 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 22:37:05,994 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 22:37:06,000 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:37:05" (1/1) ... [2021-11-07 22:37:06,034 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:37:05" (1/1) ... [2021-11-07 22:37:06,102 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 22:37:06,111 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 22:37:06,112 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 22:37:06,112 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 22:37:06,117 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:37:05" (1/1) ... [2021-11-07 22:37:06,118 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:37:05" (1/1) ... [2021-11-07 22:37:06,129 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:37:05" (1/1) ... [2021-11-07 22:37:06,140 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:37:05" (1/1) ... [2021-11-07 22:37:06,210 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:37:05" (1/1) ... [2021-11-07 22:37:06,231 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:37:05" (1/1) ... [2021-11-07 22:37:06,246 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:37:05" (1/1) ... [2021-11-07 22:37:06,258 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 22:37:06,261 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 22:37:06,261 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 22:37:06,261 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 22:37:06,263 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:37:05" (1/1) ... [2021-11-07 22:37:06,274 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 22:37:06,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 22:37:06,294 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) [2021-11-07 22:37:06,301 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 [2021-11-07 22:37:06,325 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 22:37:06,325 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 22:37:06,326 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 22:37:06,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 22:37:06,326 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 22:37:06,326 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-07 22:37:06,329 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 22:37:06,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 22:37:06,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 22:37:06,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 22:37:06,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 22:37:07,475 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 22:37:07,475 INFO L299 CfgBuilder]: Removed 120 assume(true) statements. [2021-11-07 22:37:07,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 10:37:07 BoogieIcfgContainer [2021-11-07 22:37:07,477 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 22:37:07,478 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 22:37:07,478 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 22:37:07,480 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 22:37:07,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 10:37:05" (1/3) ... [2021-11-07 22:37:07,481 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77b1b667 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 10:37:07, skipping insertion in model container [2021-11-07 22:37:07,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:37:05" (2/3) ... [2021-11-07 22:37:07,481 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77b1b667 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 10:37:07, skipping insertion in model container [2021-11-07 22:37:07,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 10:37:07" (3/3) ... [2021-11-07 22:37:07,483 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test5-2.i [2021-11-07 22:37:07,486 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 22:37:07,486 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-07 22:37:07,517 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 22:37:07,521 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 [2021-11-07 22:37:07,521 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-07 22:37:07,554 INFO L276 IsEmpty]: Start isEmpty. Operand has 287 states, 280 states have (on average 1.7214285714285715) internal successors, (482), 286 states have internal predecessors, (482), 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) [2021-11-07 22:37:07,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-07 22:37:07,558 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:37:07,559 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 22:37:07,559 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)] === [2021-11-07 22:37:07,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:37:07,564 INFO L85 PathProgramCache]: Analyzing trace with hash 889803109, now seen corresponding path program 1 times [2021-11-07 22:37:07,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 22:37:07,570 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266562732] [2021-11-07 22:37:07,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:37:07,571 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 22:37:07,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 22:37:07,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 22:37:07,682 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 22:37:07,682 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266562732] [2021-11-07 22:37:07,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266562732] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 22:37:07,683 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 22:37:07,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 22:37:07,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415359858] [2021-11-07 22:37:07,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 22:37:07,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 22:37:07,694 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 22:37:07,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 22:37:07,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 22:37:07,718 INFO L87 Difference]: Start difference. First operand has 287 states, 280 states have (on average 1.7214285714285715) internal successors, (482), 286 states have internal predecessors, (482), 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) [2021-11-07 22:37:07,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:37:07,768 INFO L93 Difference]: Finished difference Result 572 states and 962 transitions. [2021-11-07 22:37:07,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 22:37:07,770 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 [2021-11-07 22:37:07,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:37:07,778 INFO L225 Difference]: With dead ends: 572 [2021-11-07 22:37:07,778 INFO L226 Difference]: Without dead ends: 254 [2021-11-07 22:37:07,785 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 [2021-11-07 22:37:07,788 INFO L933 BasicCegarLoop]: 377 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.25ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-07 22:37:07,789 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 4.25ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-07 22:37:07,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2021-11-07 22:37:07,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2021-11-07 22:37:07,820 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) [2021-11-07 22:37:07,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 333 transitions. [2021-11-07 22:37:07,822 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 333 transitions. Word has length 8 [2021-11-07 22:37:07,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:37:07,822 INFO L470 AbstractCegarLoop]: Abstraction has 254 states and 333 transitions. [2021-11-07 22:37:07,822 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) [2021-11-07 22:37:07,822 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 333 transitions. [2021-11-07 22:37:07,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-07 22:37:07,824 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:37:07,824 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] [2021-11-07 22:37:07,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 22:37:07,825 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)] === [2021-11-07 22:37:07,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:37:07,825 INFO L85 PathProgramCache]: Analyzing trace with hash -680083191, now seen corresponding path program 1 times [2021-11-07 22:37:07,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 22:37:07,826 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223822042] [2021-11-07 22:37:07,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:37:07,826 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 22:37:07,839 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 22:37:07,840 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1497585629] [2021-11-07 22:37:07,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:37:07,840 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 22:37:07,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 22:37:07,842 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) [2021-11-07 22:37:07,843 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 22:37:07,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 22:37:07,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 22:37:07,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:37:08,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 22:37:08,094 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 22:37:08,094 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 22:37:08,094 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223822042] [2021-11-07 22:37:08,095 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 22:37:08,095 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497585629] [2021-11-07 22:37:08,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1497585629] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 22:37:08,096 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 22:37:08,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 22:37:08,098 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340128014] [2021-11-07 22:37:08,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 22:37:08,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 22:37:08,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 22:37:08,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 22:37:08,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 22:37:08,101 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) [2021-11-07 22:37:08,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:37:08,155 INFO L93 Difference]: Finished difference Result 587 states and 769 transitions. [2021-11-07 22:37:08,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 22:37:08,156 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 [2021-11-07 22:37:08,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:37:08,161 INFO L225 Difference]: With dead ends: 587 [2021-11-07 22:37:08,162 INFO L226 Difference]: Without dead ends: 505 [2021-11-07 22:37:08,164 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.89ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 22:37:08,167 INFO L933 BasicCegarLoop]: 328 mSDtfsCounter, 327 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 653 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.06ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.86ms IncrementalHoareTripleChecker+Time [2021-11-07 22:37:08,167 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [327 Valid, 653 Invalid, 12 Unknown, 0 Unchecked, 4.06ms Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 24.86ms Time] [2021-11-07 22:37:08,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2021-11-07 22:37:08,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 255. [2021-11-07 22:37:08,190 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) [2021-11-07 22:37:08,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 334 transitions. [2021-11-07 22:37:08,191 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 334 transitions. Word has length 42 [2021-11-07 22:37:08,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:37:08,197 INFO L470 AbstractCegarLoop]: Abstraction has 255 states and 334 transitions. [2021-11-07 22:37:08,198 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) [2021-11-07 22:37:08,198 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 334 transitions. [2021-11-07 22:37:08,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-07 22:37:08,204 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:37:08,204 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] [2021-11-07 22:37:08,225 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-07 22:37:08,423 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 [2021-11-07 22:37:08,424 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)] === [2021-11-07 22:37:08,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:37:08,425 INFO L85 PathProgramCache]: Analyzing trace with hash 1837409632, now seen corresponding path program 1 times [2021-11-07 22:37:08,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 22:37:08,425 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069502828] [2021-11-07 22:37:08,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:37:08,426 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 22:37:08,442 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 22:37:08,442 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [881983090] [2021-11-07 22:37:08,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:37:08,443 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 22:37:08,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 22:37:08,444 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) [2021-11-07 22:37:08,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-07 22:37:08,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 22:37:08,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 22:37:08,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:37:08,856 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 22:37:08,856 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 22:37:08,857 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 22:37:08,857 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069502828] [2021-11-07 22:37:08,857 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 22:37:08,857 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881983090] [2021-11-07 22:37:08,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [881983090] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 22:37:08,857 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 22:37:08,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 22:37:08,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842193084] [2021-11-07 22:37:08,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 22:37:08,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 22:37:08,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 22:37:08,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 22:37:08,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 22:37:08,858 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) [2021-11-07 22:37:08,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:37:08,903 INFO L93 Difference]: Finished difference Result 528 states and 696 transitions. [2021-11-07 22:37:08,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 22:37:08,903 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 [2021-11-07 22:37:08,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:37:08,904 INFO L225 Difference]: With dead ends: 528 [2021-11-07 22:37:08,904 INFO L226 Difference]: Without dead ends: 276 [2021-11-07 22:37:08,905 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.54ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 22:37:08,906 INFO L933 BasicCegarLoop]: 313 mSDtfsCounter, 9 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.72ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.05ms IncrementalHoareTripleChecker+Time [2021-11-07 22:37:08,906 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 611 Invalid, 72 Unknown, 0 Unchecked, 1.72ms Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 36.05ms Time] [2021-11-07 22:37:08,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2021-11-07 22:37:08,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 275. [2021-11-07 22:37:08,917 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) [2021-11-07 22:37:08,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 354 transitions. [2021-11-07 22:37:08,918 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 354 transitions. Word has length 140 [2021-11-07 22:37:08,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:37:08,918 INFO L470 AbstractCegarLoop]: Abstraction has 275 states and 354 transitions. [2021-11-07 22:37:08,918 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) [2021-11-07 22:37:08,931 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 354 transitions. [2021-11-07 22:37:08,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-07 22:37:08,933 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:37:08,934 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] [2021-11-07 22:37:08,954 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-07 22:37:09,134 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 [2021-11-07 22:37:09,135 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)] === [2021-11-07 22:37:09,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:37:09,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1273244828, now seen corresponding path program 1 times [2021-11-07 22:37:09,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 22:37:09,136 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794904771] [2021-11-07 22:37:09,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:37:09,136 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 22:37:09,149 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 22:37:09,155 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1090096643] [2021-11-07 22:37:09,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:37:09,156 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 22:37:09,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 22:37:09,160 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) [2021-11-07 22:37:09,168 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-07 22:37:09,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 22:37:09,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 22:37:09,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:37:09,542 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 22:37:09,542 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 22:37:09,542 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 22:37:09,542 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794904771] [2021-11-07 22:37:09,542 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 22:37:09,543 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090096643] [2021-11-07 22:37:09,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1090096643] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 22:37:09,543 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 22:37:09,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 22:37:09,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113712197] [2021-11-07 22:37:09,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 22:37:09,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 22:37:09,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 22:37:09,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 22:37:09,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 22:37:09,546 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) [2021-11-07 22:37:09,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:37:09,596 INFO L93 Difference]: Finished difference Result 568 states and 736 transitions. [2021-11-07 22:37:09,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 22:37:09,596 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 [2021-11-07 22:37:09,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:37:09,598 INFO L225 Difference]: With dead ends: 568 [2021-11-07 22:37:09,598 INFO L226 Difference]: Without dead ends: 296 [2021-11-07 22:37:09,600 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.31ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 22:37:09,602 INFO L933 BasicCegarLoop]: 313 mSDtfsCounter, 9 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.18ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40.68ms IncrementalHoareTripleChecker+Time [2021-11-07 22:37:09,605 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 611 Invalid, 72 Unknown, 0 Unchecked, 3.18ms Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 40.68ms Time] [2021-11-07 22:37:09,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2021-11-07 22:37:09,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 295. [2021-11-07 22:37:09,621 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) [2021-11-07 22:37:09,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 374 transitions. [2021-11-07 22:37:09,621 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 374 transitions. Word has length 140 [2021-11-07 22:37:09,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:37:09,622 INFO L470 AbstractCegarLoop]: Abstraction has 295 states and 374 transitions. [2021-11-07 22:37:09,622 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) [2021-11-07 22:37:09,622 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 374 transitions. [2021-11-07 22:37:09,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-07 22:37:09,624 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:37:09,624 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] [2021-11-07 22:37:09,644 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-07 22:37:09,842 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 [2021-11-07 22:37:09,842 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)] === [2021-11-07 22:37:09,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:37:09,843 INFO L85 PathProgramCache]: Analyzing trace with hash -882913824, now seen corresponding path program 1 times [2021-11-07 22:37:09,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 22:37:09,843 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749530549] [2021-11-07 22:37:09,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:37:09,843 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 22:37:09,858 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 22:37:09,858 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1932549988] [2021-11-07 22:37:09,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:37:09,858 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 22:37:09,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 22:37:09,859 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) [2021-11-07 22:37:09,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-07 22:37:10,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 22:37:10,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 22:37:10,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:37:10,221 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 22:37:10,222 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 22:37:10,222 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 22:37:10,222 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749530549] [2021-11-07 22:37:10,223 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 22:37:10,223 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932549988] [2021-11-07 22:37:10,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1932549988] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 22:37:10,223 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 22:37:10,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 22:37:10,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179698238] [2021-11-07 22:37:10,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 22:37:10,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 22:37:10,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 22:37:10,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 22:37:10,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 22:37:10,225 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) [2021-11-07 22:37:10,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:37:10,272 INFO L93 Difference]: Finished difference Result 397 states and 510 transitions. [2021-11-07 22:37:10,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 22:37:10,272 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 [2021-11-07 22:37:10,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:37:10,277 INFO L225 Difference]: With dead ends: 397 [2021-11-07 22:37:10,277 INFO L226 Difference]: Without dead ends: 316 [2021-11-07 22:37:10,278 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.27ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 22:37:10,278 INFO L933 BasicCegarLoop]: 313 mSDtfsCounter, 10 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.03ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.68ms IncrementalHoareTripleChecker+Time [2021-11-07 22:37:10,278 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 611 Invalid, 72 Unknown, 0 Unchecked, 1.03ms Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 38.68ms Time] [2021-11-07 22:37:10,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2021-11-07 22:37:10,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 315. [2021-11-07 22:37:10,284 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) [2021-11-07 22:37:10,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 394 transitions. [2021-11-07 22:37:10,285 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 394 transitions. Word has length 140 [2021-11-07 22:37:10,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:37:10,285 INFO L470 AbstractCegarLoop]: Abstraction has 315 states and 394 transitions. [2021-11-07 22:37:10,285 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) [2021-11-07 22:37:10,285 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 394 transitions. [2021-11-07 22:37:10,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-07 22:37:10,290 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:37:10,290 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] [2021-11-07 22:37:10,313 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-11-07 22:37:10,504 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 [2021-11-07 22:37:10,505 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)] === [2021-11-07 22:37:10,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:37:10,505 INFO L85 PathProgramCache]: Analyzing trace with hash 115522276, now seen corresponding path program 1 times [2021-11-07 22:37:10,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 22:37:10,505 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004239686] [2021-11-07 22:37:10,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:37:10,506 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 22:37:10,534 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 22:37:10,539 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [79062653] [2021-11-07 22:37:10,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:37:10,540 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 22:37:10,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 22:37:10,544 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) [2021-11-07 22:37:10,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-07 22:37:10,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 22:37:10,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 22:37:10,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:37:10,907 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 22:37:10,907 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 22:37:10,907 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 22:37:10,908 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004239686] [2021-11-07 22:37:10,908 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 22:37:10,908 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [79062653] [2021-11-07 22:37:10,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [79062653] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 22:37:10,908 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 22:37:10,908 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 22:37:10,908 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629454855] [2021-11-07 22:37:10,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 22:37:10,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 22:37:10,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 22:37:10,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 22:37:10,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 22:37:10,909 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) [2021-11-07 22:37:10,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:37:10,958 INFO L93 Difference]: Finished difference Result 619 states and 777 transitions. [2021-11-07 22:37:10,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 22:37:10,967 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 [2021-11-07 22:37:10,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:37:10,969 INFO L225 Difference]: With dead ends: 619 [2021-11-07 22:37:10,969 INFO L226 Difference]: Without dead ends: 307 [2021-11-07 22:37:10,970 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.32ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 22:37:10,970 INFO L933 BasicCegarLoop]: 312 mSDtfsCounter, 321 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.73ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.81ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.32ms IncrementalHoareTripleChecker+Time [2021-11-07 22:37:10,970 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [321 Valid, 619 Invalid, 66 Unknown, 0 Unchecked, 1.81ms Time], IncrementalHoareTripleChecker [24 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 35.32ms Time] [2021-11-07 22:37:10,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2021-11-07 22:37:10,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 301. [2021-11-07 22:37:10,976 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) [2021-11-07 22:37:10,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 373 transitions. [2021-11-07 22:37:10,977 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 373 transitions. Word has length 140 [2021-11-07 22:37:10,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:37:10,977 INFO L470 AbstractCegarLoop]: Abstraction has 301 states and 373 transitions. [2021-11-07 22:37:10,978 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) [2021-11-07 22:37:10,978 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 373 transitions. [2021-11-07 22:37:10,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-07 22:37:10,979 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:37:10,979 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] [2021-11-07 22:37:11,011 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-11-07 22:37:11,200 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 [2021-11-07 22:37:11,201 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)] === [2021-11-07 22:37:11,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:37:11,201 INFO L85 PathProgramCache]: Analyzing trace with hash 32737814, now seen corresponding path program 1 times [2021-11-07 22:37:11,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 22:37:11,202 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815353207] [2021-11-07 22:37:11,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:37:11,202 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 22:37:11,215 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 22:37:11,216 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1555687060] [2021-11-07 22:37:11,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:37:11,216 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 22:37:11,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 22:37:11,232 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) [2021-11-07 22:37:11,234 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-07 22:37:11,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 22:37:11,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 22:37:11,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:37:11,564 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 22:37:11,565 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 22:37:11,565 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 22:37:11,565 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815353207] [2021-11-07 22:37:11,565 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 22:37:11,565 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1555687060] [2021-11-07 22:37:11,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1555687060] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 22:37:11,565 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 22:37:11,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 22:37:11,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84231180] [2021-11-07 22:37:11,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 22:37:11,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 22:37:11,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 22:37:11,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 22:37:11,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 22:37:11,567 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) [2021-11-07 22:37:11,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:37:11,614 INFO L93 Difference]: Finished difference Result 680 states and 844 transitions. [2021-11-07 22:37:11,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 22:37:11,615 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 [2021-11-07 22:37:11,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:37:11,617 INFO L225 Difference]: With dead ends: 680 [2021-11-07 22:37:11,617 INFO L226 Difference]: Without dead ends: 382 [2021-11-07 22:37:11,618 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.61ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 22:37:11,619 INFO L933 BasicCegarLoop]: 408 mSDtfsCounter, 314 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 914 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.81ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.19ms IncrementalHoareTripleChecker+Time [2021-11-07 22:37:11,619 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [314 Valid, 914 Invalid, 66 Unknown, 0 Unchecked, 2.81ms Time], IncrementalHoareTripleChecker [24 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 33.19ms Time] [2021-11-07 22:37:11,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2021-11-07 22:37:11,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 287. [2021-11-07 22:37:11,624 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) [2021-11-07 22:37:11,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 352 transitions. [2021-11-07 22:37:11,625 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 352 transitions. Word has length 140 [2021-11-07 22:37:11,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:37:11,626 INFO L470 AbstractCegarLoop]: Abstraction has 287 states and 352 transitions. [2021-11-07 22:37:11,626 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) [2021-11-07 22:37:11,626 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 352 transitions. [2021-11-07 22:37:11,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-07 22:37:11,627 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:37:11,627 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] [2021-11-07 22:37:11,661 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-07 22:37:11,847 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 [2021-11-07 22:37:11,848 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)] === [2021-11-07 22:37:11,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:37:11,848 INFO L85 PathProgramCache]: Analyzing trace with hash -577227484, now seen corresponding path program 1 times [2021-11-07 22:37:11,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 22:37:11,848 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268934027] [2021-11-07 22:37:11,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:37:11,849 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 22:37:11,864 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 22:37:11,864 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [265707370] [2021-11-07 22:37:11,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:37:11,864 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 22:37:11,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 22:37:11,866 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) [2021-11-07 22:37:11,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-07 22:37:12,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 22:37:12,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 22:37:12,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:37:12,184 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 22:37:12,184 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 22:37:12,184 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 22:37:12,184 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268934027] [2021-11-07 22:37:12,184 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 22:37:12,184 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265707370] [2021-11-07 22:37:12,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [265707370] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 22:37:12,185 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 22:37:12,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 22:37:12,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551475481] [2021-11-07 22:37:12,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 22:37:12,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 22:37:12,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 22:37:12,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 22:37:12,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 22:37:12,186 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) [2021-11-07 22:37:12,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:37:12,230 INFO L93 Difference]: Finished difference Result 379 states and 468 transitions. [2021-11-07 22:37:12,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 22:37:12,230 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 [2021-11-07 22:37:12,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:37:12,231 INFO L225 Difference]: With dead ends: 379 [2021-11-07 22:37:12,231 INFO L226 Difference]: Without dead ends: 278 [2021-11-07 22:37:12,232 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.62ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 22:37:12,232 INFO L933 BasicCegarLoop]: 296 mSDtfsCounter, 95 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 797 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.11ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.37ms IncrementalHoareTripleChecker+Time [2021-11-07 22:37:12,232 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 797 Invalid, 66 Unknown, 0 Unchecked, 1.11ms Time], IncrementalHoareTripleChecker [24 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 34.37ms Time] [2021-11-07 22:37:12,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2021-11-07 22:37:12,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 273. [2021-11-07 22:37:12,236 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) [2021-11-07 22:37:12,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 331 transitions. [2021-11-07 22:37:12,237 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 331 transitions. Word has length 140 [2021-11-07 22:37:12,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:37:12,237 INFO L470 AbstractCegarLoop]: Abstraction has 273 states and 331 transitions. [2021-11-07 22:37:12,238 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) [2021-11-07 22:37:12,238 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 331 transitions. [2021-11-07 22:37:12,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-07 22:37:12,238 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:37:12,239 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] [2021-11-07 22:37:12,269 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-07 22:37:12,457 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 [2021-11-07 22:37:12,457 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)] === [2021-11-07 22:37:12,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:37:12,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1460076330, now seen corresponding path program 1 times [2021-11-07 22:37:12,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 22:37:12,458 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183274678] [2021-11-07 22:37:12,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:37:12,458 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 22:37:12,482 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 22:37:12,482 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1234704049] [2021-11-07 22:37:12,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:37:12,483 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 22:37:12,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 22:37:12,486 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) [2021-11-07 22:37:12,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-07 22:37:12,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 22:37:12,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 22:37:12,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:37:12,881 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 22:37:12,881 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 22:37:13,119 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 22:37:13,119 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 22:37:13,119 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183274678] [2021-11-07 22:37:13,120 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 22:37:13,120 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1234704049] [2021-11-07 22:37:13,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1234704049] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 22:37:13,120 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 22:37:13,120 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-11-07 22:37:13,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665365610] [2021-11-07 22:37:13,123 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-07 22:37:13,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 22:37:13,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 22:37:13,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 22:37:13,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-07 22:37:13,124 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) [2021-11-07 22:37:13,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:37:13,171 INFO L93 Difference]: Finished difference Result 1081 states and 1313 transitions. [2021-11-07 22:37:13,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 22:37:13,171 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 [2021-11-07 22:37:13,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:37:13,175 INFO L225 Difference]: With dead ends: 1081 [2021-11-07 22:37:13,176 INFO L226 Difference]: Without dead ends: 993 [2021-11-07 22:37:13,176 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.29ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-07 22:37:13,177 INFO L933 BasicCegarLoop]: 307 mSDtfsCounter, 1335 mSDsluCounter, 816 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1335 SdHoareTripleChecker+Valid, 1123 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.79ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.21ms IncrementalHoareTripleChecker+Time [2021-11-07 22:37:13,177 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1335 Valid, 1123 Invalid, 31 Unknown, 0 Unchecked, 2.79ms Time], IncrementalHoareTripleChecker [8 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 22.21ms Time] [2021-11-07 22:37:13,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 993 states. [2021-11-07 22:37:13,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 993 to 819. [2021-11-07 22:37:13,195 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) [2021-11-07 22:37:13,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 997 transitions. [2021-11-07 22:37:13,197 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 997 transitions. Word has length 140 [2021-11-07 22:37:13,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:37:13,197 INFO L470 AbstractCegarLoop]: Abstraction has 819 states and 997 transitions. [2021-11-07 22:37:13,198 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) [2021-11-07 22:37:13,198 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 997 transitions. [2021-11-07 22:37:13,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2021-11-07 22:37:13,202 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:37:13,202 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] [2021-11-07 22:37:13,223 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-07 22:37:13,423 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 [2021-11-07 22:37:13,424 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)] === [2021-11-07 22:37:13,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:37:13,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1752556443, now seen corresponding path program 2 times [2021-11-07 22:37:13,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 22:37:13,424 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681411662] [2021-11-07 22:37:13,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:37:13,424 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 22:37:13,446 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 22:37:13,447 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2140454323] [2021-11-07 22:37:13,447 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 22:37:13,447 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 22:37:13,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 22:37:13,456 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) [2021-11-07 22:37:13,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-07 22:37:13,798 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 22:37:13,798 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 22:37:13,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 1091 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 22:37:13,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:37:14,527 INFO L134 CoverageAnalysis]: Checked inductivity of 592 backedges. 0 proven. 592 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 22:37:14,528 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 22:37:15,370 INFO L134 CoverageAnalysis]: Checked inductivity of 592 backedges. 0 proven. 592 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 22:37:15,371 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 22:37:15,371 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681411662] [2021-11-07 22:37:15,371 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 22:37:15,371 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2140454323] [2021-11-07 22:37:15,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2140454323] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 22:37:15,372 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 22:37:15,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-11-07 22:37:15,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294631941] [2021-11-07 22:37:15,372 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-07 22:37:15,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-07 22:37:15,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 22:37:15,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-07 22:37:15,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-11-07 22:37:15,375 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) [2021-11-07 22:37:15,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:37:15,531 INFO L93 Difference]: Finished difference Result 2434 states and 2960 transitions. [2021-11-07 22:37:15,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-07 22:37:15,532 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 [2021-11-07 22:37:15,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:37:15,538 INFO L225 Difference]: With dead ends: 2434 [2021-11-07 22:37:15,539 INFO L226 Difference]: Without dead ends: 2346 [2021-11-07 22:37:15,540 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 866 GetRequests, 856 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 39.42ms TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-11-07 22:37:15,540 INFO L933 BasicCegarLoop]: 307 mSDtfsCounter, 3522 mSDsluCounter, 2636 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 44.15ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3522 SdHoareTripleChecker+Valid, 2943 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.44ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 56.93ms IncrementalHoareTripleChecker+Time [2021-11-07 22:37:15,541 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3522 Valid, 2943 Invalid, 70 Unknown, 0 Unchecked, 18.44ms Time], IncrementalHoareTripleChecker [16 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 56.93ms Time] [2021-11-07 22:37:15,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2346 states. [2021-11-07 22:37:15,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2346 to 1911. [2021-11-07 22:37:15,574 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) [2021-11-07 22:37:15,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1911 states to 1911 states and 2329 transitions. [2021-11-07 22:37:15,577 INFO L78 Accepts]: Start accepts. Automaton has 1911 states and 2329 transitions. Word has length 434 [2021-11-07 22:37:15,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:37:15,578 INFO L470 AbstractCegarLoop]: Abstraction has 1911 states and 2329 transitions. [2021-11-07 22:37:15,578 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) [2021-11-07 22:37:15,579 INFO L276 IsEmpty]: Start isEmpty. Operand 1911 states and 2329 transitions. [2021-11-07 22:37:15,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1023 [2021-11-07 22:37:15,594 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:37:15,595 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] [2021-11-07 22:37:15,626 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-07 22:37:15,827 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 [2021-11-07 22:37:15,827 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)] === [2021-11-07 22:37:15,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:37:15,828 INFO L85 PathProgramCache]: Analyzing trace with hash -675748379, now seen corresponding path program 3 times [2021-11-07 22:37:15,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 22:37:15,828 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214444244] [2021-11-07 22:37:15,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:37:15,828 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 22:37:15,857 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 22:37:15,857 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [593546573] [2021-11-07 22:37:15,858 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 22:37:15,858 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 22:37:15,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 22:37:15,862 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) [2021-11-07 22:37:15,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-07 22:37:16,123 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-07 22:37:16,123 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 22:37:16,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 22:37:16,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:37:19,821 INFO L134 CoverageAnalysis]: Checked inductivity of 4420 backedges. 145 proven. 0 refuted. 0 times theorem prover too weak. 4275 trivial. 0 not checked. [2021-11-07 22:37:19,821 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 22:37:19,822 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 22:37:19,822 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214444244] [2021-11-07 22:37:19,822 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 22:37:19,822 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [593546573] [2021-11-07 22:37:19,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [593546573] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 22:37:19,822 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 22:37:19,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 22:37:19,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489277514] [2021-11-07 22:37:19,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 22:37:19,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 22:37:19,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 22:37:19,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 22:37:19,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 22:37:19,826 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) [2021-11-07 22:37:19,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:37:19,893 INFO L93 Difference]: Finished difference Result 3746 states and 4565 transitions. [2021-11-07 22:37:19,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 22:37:19,893 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 [2021-11-07 22:37:19,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:37:19,898 INFO L225 Difference]: With dead ends: 3746 [2021-11-07 22:37:19,898 INFO L226 Difference]: Without dead ends: 1980 [2021-11-07 22:37:19,900 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1021 GetRequests, 1020 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.31ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 22:37:19,901 INFO L933 BasicCegarLoop]: 352 mSDtfsCounter, 149 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 642 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.28ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.20ms IncrementalHoareTripleChecker+Time [2021-11-07 22:37:19,901 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [149 Valid, 642 Invalid, 14 Unknown, 0 Unchecked, 10.28ms Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 35.20ms Time] [2021-11-07 22:37:19,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1980 states. [2021-11-07 22:37:19,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1980 to 1968. [2021-11-07 22:37:19,926 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) [2021-11-07 22:37:19,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1968 states to 1968 states and 2401 transitions. [2021-11-07 22:37:19,929 INFO L78 Accepts]: Start accepts. Automaton has 1968 states and 2401 transitions. Word has length 1022 [2021-11-07 22:37:19,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:37:19,929 INFO L470 AbstractCegarLoop]: Abstraction has 1968 states and 2401 transitions. [2021-11-07 22:37:19,930 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) [2021-11-07 22:37:19,930 INFO L276 IsEmpty]: Start isEmpty. Operand 1968 states and 2401 transitions. [2021-11-07 22:37:19,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1030 [2021-11-07 22:37:19,949 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:37:19,950 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] [2021-11-07 22:37:19,968 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-07 22:37:20,168 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 [2021-11-07 22:37:20,169 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)] === [2021-11-07 22:37:20,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:37:20,169 INFO L85 PathProgramCache]: Analyzing trace with hash -680932187, now seen corresponding path program 1 times [2021-11-07 22:37:20,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 22:37:20,169 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451986839] [2021-11-07 22:37:20,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:37:20,169 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 22:37:20,204 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 22:37:20,204 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [726806739] [2021-11-07 22:37:20,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:37:20,205 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 22:37:20,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 22:37:20,206 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) [2021-11-07 22:37:20,207 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-07 22:37:20,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 22:37:20,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 2633 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 22:37:20,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:37:22,198 INFO L134 CoverageAnalysis]: Checked inductivity of 4402 backedges. 10 proven. 738 refuted. 0 times theorem prover too weak. 3654 trivial. 0 not checked. [2021-11-07 22:37:22,198 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 22:37:23,654 INFO L134 CoverageAnalysis]: Checked inductivity of 4402 backedges. 10 proven. 738 refuted. 0 times theorem prover too weak. 3654 trivial. 0 not checked. [2021-11-07 22:37:23,654 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 22:37:23,655 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451986839] [2021-11-07 22:37:23,655 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 22:37:23,655 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [726806739] [2021-11-07 22:37:23,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [726806739] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 22:37:23,655 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 22:37:23,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-11-07 22:37:23,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368012250] [2021-11-07 22:37:23,658 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-07 22:37:23,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 22:37:23,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 22:37:23,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 22:37:23,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 22:37:23,660 INFO L87 Difference]: Start difference. First operand 1968 states and 2401 transitions. Second operand has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 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) [2021-11-07 22:37:24,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:37:24,463 INFO L93 Difference]: Finished difference Result 3478 states and 4245 transitions. [2021-11-07 22:37:24,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 22:37:24,464 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 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 [2021-11-07 22:37:24,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:37:24,469 INFO L225 Difference]: With dead ends: 3478 [2021-11-07 22:37:24,469 INFO L226 Difference]: Without dead ends: 1828 [2021-11-07 22:37:24,471 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2057 GetRequests, 2054 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.87ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 22:37:24,471 INFO L933 BasicCegarLoop]: 368 mSDtfsCounter, 382 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 717.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.10ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 760.82ms IncrementalHoareTripleChecker+Time [2021-11-07 22:37:24,471 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [382 Valid, 492 Invalid, 127 Unknown, 0 Unchecked, 6.10ms Time], IncrementalHoareTripleChecker [1 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 760.82ms Time] [2021-11-07 22:37:24,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1828 states. [2021-11-07 22:37:24,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1828 to 1828. [2021-11-07 22:37:24,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1828 states, 1822 states have (on average 1.216794731064764) internal successors, (2217), 1827 states have internal predecessors, (2217), 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) [2021-11-07 22:37:24,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1828 states to 1828 states and 2217 transitions. [2021-11-07 22:37:24,498 INFO L78 Accepts]: Start accepts. Automaton has 1828 states and 2217 transitions. Word has length 1029 [2021-11-07 22:37:24,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:37:24,499 INFO L470 AbstractCegarLoop]: Abstraction has 1828 states and 2217 transitions. [2021-11-07 22:37:24,499 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 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) [2021-11-07 22:37:24,499 INFO L276 IsEmpty]: Start isEmpty. Operand 1828 states and 2217 transitions. [2021-11-07 22:37:24,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1037 [2021-11-07 22:37:24,506 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:37:24,507 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, 1, 1, 1, 1, 1] [2021-11-07 22:37:24,530 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-07 22:37:24,730 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 [2021-11-07 22:37:24,731 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)] === [2021-11-07 22:37:24,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:37:24,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1248973059, now seen corresponding path program 1 times [2021-11-07 22:37:24,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 22:37:24,732 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613920780] [2021-11-07 22:37:24,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:37:24,732 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 22:37:24,778 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 22:37:24,778 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [386666363] [2021-11-07 22:37:24,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:37:24,778 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 22:37:24,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 22:37:24,796 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) [2021-11-07 22:37:24,798 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-07 22:37:25,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 22:37:25,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 2658 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 22:37:25,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 22:37:26,619 INFO L134 CoverageAnalysis]: Checked inductivity of 4402 backedges. 325 proven. 0 refuted. 0 times theorem prover too weak. 4077 trivial. 0 not checked. [2021-11-07 22:37:26,620 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 22:37:26,620 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 22:37:26,620 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613920780] [2021-11-07 22:37:26,620 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 22:37:26,620 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386666363] [2021-11-07 22:37:26,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [386666363] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 22:37:26,620 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 22:37:26,620 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 22:37:26,620 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670805662] [2021-11-07 22:37:26,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 22:37:26,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 22:37:26,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 22:37:26,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 22:37:26,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 22:37:26,622 INFO L87 Difference]: Start difference. First operand 1828 states and 2217 transitions. Second operand has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 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) [2021-11-07 22:37:26,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 22:37:26,670 INFO L93 Difference]: Finished difference Result 3598 states and 4368 transitions. [2021-11-07 22:37:26,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 22:37:26,673 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 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 1036 [2021-11-07 22:37:26,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 22:37:26,678 INFO L225 Difference]: With dead ends: 3598 [2021-11-07 22:37:26,678 INFO L226 Difference]: Without dead ends: 1826 [2021-11-07 22:37:26,681 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1035 GetRequests, 1034 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.70ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 22:37:26,682 INFO L933 BasicCegarLoop]: 310 mSDtfsCounter, 19 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.55ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.75ms IncrementalHoareTripleChecker+Time [2021-11-07 22:37:26,682 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 604 Invalid, 7 Unknown, 0 Unchecked, 0.55ms Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 26.75ms Time] [2021-11-07 22:37:26,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1826 states. [2021-11-07 22:37:26,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1826 to 1826. [2021-11-07 22:37:26,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1826 states, 1820 states have (on average 1.2164835164835164) internal successors, (2214), 1825 states have internal predecessors, (2214), 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) [2021-11-07 22:37:26,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1826 states to 1826 states and 2214 transitions. [2021-11-07 22:37:26,709 INFO L78 Accepts]: Start accepts. Automaton has 1826 states and 2214 transitions. Word has length 1036 [2021-11-07 22:37:26,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 22:37:26,710 INFO L470 AbstractCegarLoop]: Abstraction has 1826 states and 2214 transitions. [2021-11-07 22:37:26,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 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) [2021-11-07 22:37:26,710 INFO L276 IsEmpty]: Start isEmpty. Operand 1826 states and 2214 transitions. [2021-11-07 22:37:26,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1044 [2021-11-07 22:37:26,717 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 22:37:26,718 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, 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] [2021-11-07 22:37:26,741 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-07 22:37:26,931 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 [2021-11-07 22:37:26,932 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)] === [2021-11-07 22:37:26,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 22:37:26,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1492434163, now seen corresponding path program 1 times [2021-11-07 22:37:26,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 22:37:26,933 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409943540] [2021-11-07 22:37:26,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:37:26,933 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 22:37:26,967 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 22:37:26,967 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1354062705] [2021-11-07 22:37:26,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 22:37:26,968 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 22:37:26,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 22:37:26,983 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) [2021-11-07 22:37:26,984 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process Killed by 15