./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test10-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c36dfa3b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test10-2.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 9a343b75818c5d561b79c31bb62e9abdd9bdb0bf3f01f7efa313d9ef0f4204f4 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-c36dfa3 [2021-11-04 16:31:58,081 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-04 16:31:58,083 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-04 16:31:58,167 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-04 16:31:58,168 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-04 16:31:58,171 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-04 16:31:58,172 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-04 16:31:58,177 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-04 16:31:58,178 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-04 16:31:58,183 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-04 16:31:58,184 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-04 16:31:58,185 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-04 16:31:58,186 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-04 16:31:58,189 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-04 16:31:58,190 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-04 16:31:58,193 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-04 16:31:58,195 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-04 16:31:58,196 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-04 16:31:58,198 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-04 16:31:58,203 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-04 16:31:58,204 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-04 16:31:58,205 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-04 16:31:58,206 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-04 16:31:58,208 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-04 16:31:58,214 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-04 16:31:58,215 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-04 16:31:58,215 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-04 16:31:58,216 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-04 16:31:58,216 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-04 16:31:58,217 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-04 16:31:58,217 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-04 16:31:58,218 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-04 16:31:58,219 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-04 16:31:58,220 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-04 16:31:58,222 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-04 16:31:58,222 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-04 16:31:58,222 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-04 16:31:58,222 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-04 16:31:58,223 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-04 16:31:58,223 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-04 16:31:58,224 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-04 16:31:58,225 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-04 16:31:58,261 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-04 16:31:58,261 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-04 16:31:58,262 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-04 16:31:58,262 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-04 16:31:58,263 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-04 16:31:58,263 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-04 16:31:58,264 INFO L138 SettingsManager]: * Use SBE=true [2021-11-04 16:31:58,264 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-04 16:31:58,264 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-04 16:31:58,264 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-04 16:31:58,265 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-04 16:31:58,265 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-04 16:31:58,265 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-04 16:31:58,266 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-04 16:31:58,266 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-04 16:31:58,266 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-04 16:31:58,266 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-04 16:31:58,266 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-04 16:31:58,266 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-04 16:31:58,267 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-04 16:31:58,267 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-04 16:31:58,267 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-04 16:31:58,267 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 16:31:58,267 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-04 16:31:58,268 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-04 16:31:58,268 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-04 16:31:58,269 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-04 16:31:58,269 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-04 16:31:58,269 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-04 16:31:58,269 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-04 16:31:58,270 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-04 16:31:58,270 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-04 16:31:58,270 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a343b75818c5d561b79c31bb62e9abdd9bdb0bf3f01f7efa313d9ef0f4204f4 [2021-11-04 16:31:58,494 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-04 16:31:58,519 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-04 16:31:58,521 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-04 16:31:58,522 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-04 16:31:58,527 INFO L275 PluginConnector]: CDTParser initialized [2021-11-04 16:31:58,528 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test10-2.i [2021-11-04 16:31:58,589 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11fc047cc/4d5aca049e094ee3ad21457f53b97284/FLAG5262bcb14 [2021-11-04 16:31:59,172 INFO L306 CDTParser]: Found 1 translation units. [2021-11-04 16:31:59,172 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test10-2.i [2021-11-04 16:31:59,209 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11fc047cc/4d5aca049e094ee3ad21457f53b97284/FLAG5262bcb14 [2021-11-04 16:31:59,570 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11fc047cc/4d5aca049e094ee3ad21457f53b97284 [2021-11-04 16:31:59,573 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-04 16:31:59,574 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-04 16:31:59,576 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-04 16:31:59,576 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-04 16:31:59,579 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-04 16:31:59,579 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 04:31:59" (1/1) ... [2021-11-04 16:31:59,580 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@540876d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:31:59, skipping insertion in model container [2021-11-04 16:31:59,581 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 04:31:59" (1/1) ... [2021-11-04 16:31:59,587 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-04 16:31:59,634 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-04 16:31:59,989 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_SFH_test10-2.i[33022,33035] [2021-11-04 16:32:00,207 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 16:32:00,216 INFO L203 MainTranslator]: Completed pre-run [2021-11-04 16:32:00,238 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_SFH_test10-2.i[33022,33035] [2021-11-04 16:32:00,393 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 16:32:00,427 INFO L208 MainTranslator]: Completed translation [2021-11-04 16:32:00,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:32:00 WrapperNode [2021-11-04 16:32:00,428 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-04 16:32:00,429 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-04 16:32:00,430 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-04 16:32:00,430 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-04 16:32:00,435 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:32:00" (1/1) ... [2021-11-04 16:32:00,485 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:32:00" (1/1) ... [2021-11-04 16:32:00,584 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-04 16:32:00,585 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-04 16:32:00,585 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-04 16:32:00,585 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-04 16:32:00,594 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:32:00" (1/1) ... [2021-11-04 16:32:00,594 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:32:00" (1/1) ... [2021-11-04 16:32:00,610 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:32:00" (1/1) ... [2021-11-04 16:32:00,611 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:32:00" (1/1) ... [2021-11-04 16:32:00,686 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:32:00" (1/1) ... [2021-11-04 16:32:00,718 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:32:00" (1/1) ... [2021-11-04 16:32:00,729 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:32:00" (1/1) ... [2021-11-04 16:32:00,749 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-04 16:32:00,750 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-04 16:32:00,751 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-04 16:32:00,751 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-04 16:32:00,752 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:32:00" (1/1) ... [2021-11-04 16:32:00,758 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 16:32:00,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 16:32:00,785 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-04 16:32:00,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-04 16:32:00,827 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-04 16:32:00,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-04 16:32:00,827 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-04 16:32:00,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-04 16:32:00,828 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-04 16:32:00,828 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-04 16:32:00,828 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-04 16:32:00,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-04 16:32:00,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-04 16:32:00,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-04 16:32:00,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-04 16:32:01,755 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-04 16:32:01,755 INFO L299 CfgBuilder]: Removed 216 assume(true) statements. [2021-11-04 16:32:01,758 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 04:32:01 BoogieIcfgContainer [2021-11-04 16:32:01,758 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-04 16:32:01,760 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-04 16:32:01,760 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-04 16:32:01,763 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-04 16:32:01,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.11 04:31:59" (1/3) ... [2021-11-04 16:32:01,764 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5991480a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 04:32:01, skipping insertion in model container [2021-11-04 16:32:01,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:32:00" (2/3) ... [2021-11-04 16:32:01,765 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5991480a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 04:32:01, skipping insertion in model container [2021-11-04 16:32:01,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 04:32:01" (3/3) ... [2021-11-04 16:32:01,767 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test10-2.i [2021-11-04 16:32:01,772 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-04 16:32:01,772 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2021-11-04 16:32:01,839 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-04 16:32:01,846 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-04 16:32:01,847 INFO L340 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2021-11-04 16:32:01,887 INFO L276 IsEmpty]: Start isEmpty. Operand has 499 states, 482 states have (on average 1.7427385892116183) internal successors, (840), 498 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:32:01,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-04 16:32:01,893 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 16:32:01,894 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 16:32:01,895 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-04 16:32:01,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 16:32:01,899 INFO L85 PathProgramCache]: Analyzing trace with hash -128377380, now seen corresponding path program 1 times [2021-11-04 16:32:01,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 16:32:01,907 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358322346] [2021-11-04 16:32:01,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:32:01,908 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 16:32:02,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 16:32:02,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 16:32:02,094 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 16:32:02,095 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358322346] [2021-11-04 16:32:02,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358322346] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 16:32:02,096 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 16:32:02,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 16:32:02,098 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509314235] [2021-11-04 16:32:02,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 16:32:02,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-04 16:32:02,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 16:32:02,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-04 16:32:02,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-04 16:32:02,129 INFO L87 Difference]: Start difference. First operand has 499 states, 482 states have (on average 1.7427385892116183) internal successors, (840), 498 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:32:03,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 16:32:03,078 INFO L93 Difference]: Finished difference Result 996 states and 1678 transitions. [2021-11-04 16:32:03,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-04 16:32:03,080 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-04 16:32:03,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 16:32:03,096 INFO L225 Difference]: With dead ends: 996 [2021-11-04 16:32:03,097 INFO L226 Difference]: Without dead ends: 465 [2021-11-04 16:32:03,103 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-04 16:32:03,107 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 657 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 694.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.88ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 879.25ms IncrementalHoareTripleChecker+Time [2021-11-04 16:32:03,109 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 657 Unknown, 0 Unchecked, 3.88ms Time], IncrementalHoareTripleChecker [0 Valid, 657 Invalid, 0 Unknown, 0 Unchecked, 879.25ms Time] [2021-11-04 16:32:03,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2021-11-04 16:32:03,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 465. [2021-11-04 16:32:03,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465 states, 449 states have (on average 1.354120267260579) internal successors, (608), 464 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:32:03,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 608 transitions. [2021-11-04 16:32:03,163 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 608 transitions. Word has length 9 [2021-11-04 16:32:03,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 16:32:03,163 INFO L470 AbstractCegarLoop]: Abstraction has 465 states and 608 transitions. [2021-11-04 16:32:03,163 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:32:03,164 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 608 transitions. [2021-11-04 16:32:03,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-04 16:32:03,165 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 16:32:03,166 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 16:32:03,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-04 16:32:03,166 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-04 16:32:03,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 16:32:03,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1568739198, now seen corresponding path program 1 times [2021-11-04 16:32:03,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 16:32:03,167 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236855670] [2021-11-04 16:32:03,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:32:03,168 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 16:32:03,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 16:32:03,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 16:32:03,264 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 16:32:03,264 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236855670] [2021-11-04 16:32:03,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236855670] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 16:32:03,264 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 16:32:03,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 16:32:03,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983163962] [2021-11-04 16:32:03,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 16:32:03,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 16:32:03,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 16:32:03,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 16:32:03,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 16:32:03,267 INFO L87 Difference]: Start difference. First operand 465 states and 608 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:32:04,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 16:32:04,894 INFO L93 Difference]: Finished difference Result 831 states and 1087 transitions. [2021-11-04 16:32:04,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-04 16:32:04,894 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-04 16:32:04,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 16:32:04,897 INFO L225 Difference]: With dead ends: 831 [2021-11-04 16:32:04,897 INFO L226 Difference]: Without dead ends: 540 [2021-11-04 16:32:04,898 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.61ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 16:32:04,899 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 96 mSDsluCounter, 1024 mSDsCounter, 0 mSdLazyCounter, 1823 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1299.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.01ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1823 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1574.23ms IncrementalHoareTripleChecker+Time [2021-11-04 16:32:04,900 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 0 Invalid, 1825 Unknown, 0 Unchecked, 8.01ms Time], IncrementalHoareTripleChecker [2 Valid, 1823 Invalid, 0 Unknown, 0 Unchecked, 1574.23ms Time] [2021-11-04 16:32:04,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2021-11-04 16:32:04,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 467. [2021-11-04 16:32:04,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 451 states have (on average 1.352549889135255) internal successors, (610), 466 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:32:04,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 610 transitions. [2021-11-04 16:32:04,920 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 610 transitions. Word has length 44 [2021-11-04 16:32:04,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 16:32:04,920 INFO L470 AbstractCegarLoop]: Abstraction has 467 states and 610 transitions. [2021-11-04 16:32:04,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:32:04,920 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 610 transitions. [2021-11-04 16:32:04,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-04 16:32:04,923 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 16:32:04,924 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 16:32:04,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-04 16:32:04,924 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-04 16:32:04,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 16:32:04,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1325558428, now seen corresponding path program 1 times [2021-11-04 16:32:04,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 16:32:04,925 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321130350] [2021-11-04 16:32:04,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:32:04,926 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 16:32:04,959 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 16:32:04,960 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [941302034] [2021-11-04 16:32:04,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:32:04,960 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 16:32:04,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 16:32:04,967 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 16:32:04,987 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-04 16:32:05,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 16:32:05,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-04 16:32:05,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 16:32:05,480 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 16:32:05,480 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 16:32:05,480 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 16:32:05,480 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321130350] [2021-11-04 16:32:05,481 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 16:32:05,481 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [941302034] [2021-11-04 16:32:05,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [941302034] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 16:32:05,481 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 16:32:05,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 16:32:05,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53554893] [2021-11-04 16:32:05,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 16:32:05,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 16:32:05,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 16:32:05,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 16:32:05,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 16:32:05,484 INFO L87 Difference]: Start difference. First operand 467 states and 610 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:32:06,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 16:32:06,569 INFO L93 Difference]: Finished difference Result 951 states and 1247 transitions. [2021-11-04 16:32:06,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 16:32:06,570 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 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 97 [2021-11-04 16:32:06,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 16:32:06,572 INFO L225 Difference]: With dead ends: 951 [2021-11-04 16:32:06,572 INFO L226 Difference]: Without dead ends: 488 [2021-11-04 16:32:06,573 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.98ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 16:32:06,574 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 9 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 1205 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 880.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.88ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1059.56ms IncrementalHoareTripleChecker+Time [2021-11-04 16:32:06,574 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 0 Invalid, 1233 Unknown, 0 Unchecked, 2.88ms Time], IncrementalHoareTripleChecker [28 Valid, 1205 Invalid, 0 Unknown, 0 Unchecked, 1059.56ms Time] [2021-11-04 16:32:06,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2021-11-04 16:32:06,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 487. [2021-11-04 16:32:06,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 487 states, 471 states have (on average 1.3375796178343948) internal successors, (630), 486 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:32:06,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 630 transitions. [2021-11-04 16:32:06,586 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 630 transitions. Word has length 97 [2021-11-04 16:32:06,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 16:32:06,586 INFO L470 AbstractCegarLoop]: Abstraction has 487 states and 630 transitions. [2021-11-04 16:32:06,587 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:32:06,591 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 630 transitions. [2021-11-04 16:32:06,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-04 16:32:06,602 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 16:32:06,602 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 16:32:06,626 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-04 16:32:06,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 16:32:06,824 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-04 16:32:06,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 16:32:06,824 INFO L85 PathProgramCache]: Analyzing trace with hash 948433376, now seen corresponding path program 1 times [2021-11-04 16:32:06,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 16:32:06,825 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874417555] [2021-11-04 16:32:06,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:32:06,825 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 16:32:06,845 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 16:32:06,847 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1943196111] [2021-11-04 16:32:06,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:32:06,847 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 16:32:06,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 16:32:06,848 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 16:32:06,850 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-04 16:32:07,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 16:32:07,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-04 16:32:07,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 16:32:07,216 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-04 16:32:07,216 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 16:32:07,217 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 16:32:07,219 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874417555] [2021-11-04 16:32:07,219 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 16:32:07,219 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1943196111] [2021-11-04 16:32:07,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1943196111] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 16:32:07,221 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 16:32:07,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 16:32:07,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010785479] [2021-11-04 16:32:07,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 16:32:07,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 16:32:07,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 16:32:07,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 16:32:07,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 16:32:07,226 INFO L87 Difference]: Start difference. First operand 487 states and 630 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:32:09,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 16:32:09,061 INFO L93 Difference]: Finished difference Result 787 states and 1024 transitions. [2021-11-04 16:32:09,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 16:32:09,062 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-11-04 16:32:09,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 16:32:09,065 INFO L225 Difference]: With dead ends: 787 [2021-11-04 16:32:09,065 INFO L226 Difference]: Without dead ends: 508 [2021-11-04 16:32:09,066 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.81ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 16:32:09,069 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 9 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 1205 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1652.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.79ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1813.73ms IncrementalHoareTripleChecker+Time [2021-11-04 16:32:09,070 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 0 Invalid, 1233 Unknown, 0 Unchecked, 2.79ms Time], IncrementalHoareTripleChecker [28 Valid, 1205 Invalid, 0 Unknown, 0 Unchecked, 1813.73ms Time] [2021-11-04 16:32:09,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2021-11-04 16:32:09,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 507. [2021-11-04 16:32:09,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 507 states, 491 states have (on average 1.3238289205702647) internal successors, (650), 506 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:32:09,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 650 transitions. [2021-11-04 16:32:09,083 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 650 transitions. Word has length 97 [2021-11-04 16:32:09,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 16:32:09,083 INFO L470 AbstractCegarLoop]: Abstraction has 507 states and 650 transitions. [2021-11-04 16:32:09,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:32:09,084 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 650 transitions. [2021-11-04 16:32:09,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-04 16:32:09,085 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 16:32:09,085 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 16:32:09,115 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-04 16:32:09,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-11-04 16:32:09,305 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-04 16:32:09,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 16:32:09,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1352389214, now seen corresponding path program 1 times [2021-11-04 16:32:09,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 16:32:09,305 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513955013] [2021-11-04 16:32:09,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:32:09,306 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 16:32:09,320 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 16:32:09,321 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [457036742] [2021-11-04 16:32:09,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:32:09,321 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 16:32:09,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 16:32:09,322 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 16:32:09,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-04 16:32:09,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 16:32:09,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-04 16:32:09,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 16:32:09,703 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 16:32:09,704 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 16:32:09,704 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 16:32:09,704 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513955013] [2021-11-04 16:32:09,704 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 16:32:09,705 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [457036742] [2021-11-04 16:32:09,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [457036742] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 16:32:09,705 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 16:32:09,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 16:32:09,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978576619] [2021-11-04 16:32:09,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 16:32:09,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 16:32:09,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 16:32:09,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 16:32:09,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 16:32:09,707 INFO L87 Difference]: Start difference. First operand 507 states and 650 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:32:11,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 16:32:11,089 INFO L93 Difference]: Finished difference Result 1086 states and 1400 transitions. [2021-11-04 16:32:11,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-04 16:32:11,090 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 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 97 [2021-11-04 16:32:11,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 16:32:11,092 INFO L225 Difference]: With dead ends: 1086 [2021-11-04 16:32:11,093 INFO L226 Difference]: Without dead ends: 583 [2021-11-04 16:32:11,093 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.25ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 16:32:11,094 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 596 mSDsluCounter, 808 mSDsCounter, 0 mSdLazyCounter, 1550 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1117.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 596 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.93ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1338.09ms IncrementalHoareTripleChecker+Time [2021-11-04 16:32:11,094 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [596 Valid, 0 Invalid, 1574 Unknown, 0 Unchecked, 4.93ms Time], IncrementalHoareTripleChecker [24 Valid, 1550 Invalid, 0 Unknown, 0 Unchecked, 1338.09ms Time] [2021-11-04 16:32:11,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2021-11-04 16:32:11,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 493. [2021-11-04 16:32:11,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 493 states, 477 states have (on average 1.3186582809224319) internal successors, (629), 492 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:32:11,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 629 transitions. [2021-11-04 16:32:11,105 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 629 transitions. Word has length 97 [2021-11-04 16:32:11,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 16:32:11,105 INFO L470 AbstractCegarLoop]: Abstraction has 493 states and 629 transitions. [2021-11-04 16:32:11,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:32:11,106 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 629 transitions. [2021-11-04 16:32:11,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-04 16:32:11,107 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 16:32:11,107 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 16:32:11,136 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-04 16:32:11,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 16:32:11,336 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-04 16:32:11,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 16:32:11,337 INFO L85 PathProgramCache]: Analyzing trace with hash 881478960, now seen corresponding path program 1 times [2021-11-04 16:32:11,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 16:32:11,337 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573037425] [2021-11-04 16:32:11,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:32:11,338 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 16:32:11,354 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 16:32:11,355 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [89594206] [2021-11-04 16:32:11,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:32:11,355 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 16:32:11,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 16:32:11,358 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 16:32:11,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-04 16:32:11,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 16:32:11,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-04 16:32:11,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 16:32:11,725 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-04 16:32:11,725 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 16:32:11,725 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 16:32:11,725 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573037425] [2021-11-04 16:32:11,726 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 16:32:11,726 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [89594206] [2021-11-04 16:32:11,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [89594206] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 16:32:11,726 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 16:32:11,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 16:32:11,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322325600] [2021-11-04 16:32:11,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 16:32:11,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 16:32:11,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 16:32:11,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 16:32:11,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 16:32:11,729 INFO L87 Difference]: Start difference. First operand 493 states and 629 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:32:12,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 16:32:12,907 INFO L93 Difference]: Finished difference Result 761 states and 972 transitions. [2021-11-04 16:32:12,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-04 16:32:12,908 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-11-04 16:32:12,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 16:32:12,910 INFO L225 Difference]: With dead ends: 761 [2021-11-04 16:32:12,910 INFO L226 Difference]: Without dead ends: 480 [2021-11-04 16:32:12,911 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.88ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 16:32:12,912 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 365 mSDsluCounter, 788 mSDsCounter, 0 mSdLazyCounter, 1404 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 971.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.42ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1148.86ms IncrementalHoareTripleChecker+Time [2021-11-04 16:32:12,912 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [365 Valid, 0 Invalid, 1428 Unknown, 0 Unchecked, 3.42ms Time], IncrementalHoareTripleChecker [24 Valid, 1404 Invalid, 0 Unknown, 0 Unchecked, 1148.86ms Time] [2021-11-04 16:32:12,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2021-11-04 16:32:12,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 479. [2021-11-04 16:32:12,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 463 states have (on average 1.3131749460043196) internal successors, (608), 478 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:32:12,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 608 transitions. [2021-11-04 16:32:12,923 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 608 transitions. Word has length 97 [2021-11-04 16:32:12,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 16:32:12,923 INFO L470 AbstractCegarLoop]: Abstraction has 479 states and 608 transitions. [2021-11-04 16:32:12,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:32:12,935 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 608 transitions. [2021-11-04 16:32:12,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-04 16:32:12,936 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 16:32:12,937 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 16:32:12,959 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-04 16:32:13,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 16:32:13,156 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-04 16:32:13,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 16:32:13,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1427704734, now seen corresponding path program 1 times [2021-11-04 16:32:13,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 16:32:13,157 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061640813] [2021-11-04 16:32:13,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:32:13,157 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 16:32:13,170 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 16:32:13,170 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1536121437] [2021-11-04 16:32:13,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:32:13,171 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 16:32:13,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 16:32:13,172 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 16:32:13,173 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-04 16:32:13,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 16:32:13,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-04 16:32:13,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 16:32:13,637 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 16:32:13,637 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 16:32:13,637 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 16:32:13,637 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061640813] [2021-11-04 16:32:13,638 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 16:32:13,638 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536121437] [2021-11-04 16:32:13,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1536121437] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 16:32:13,638 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 16:32:13,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 16:32:13,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908073608] [2021-11-04 16:32:13,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 16:32:13,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 16:32:13,639 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 16:32:13,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 16:32:13,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 16:32:13,640 INFO L87 Difference]: Start difference. First operand 479 states and 608 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:32:14,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 16:32:14,667 INFO L93 Difference]: Finished difference Result 1231 states and 1562 transitions. [2021-11-04 16:32:14,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 16:32:14,674 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 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 97 [2021-11-04 16:32:14,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 16:32:14,676 INFO L225 Difference]: With dead ends: 1231 [2021-11-04 16:32:14,676 INFO L226 Difference]: Without dead ends: 756 [2021-11-04 16:32:14,677 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.84ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 16:32:14,677 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 317 mSDsluCounter, 567 mSDsCounter, 0 mSdLazyCounter, 1174 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 792.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.26ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 996.98ms IncrementalHoareTripleChecker+Time [2021-11-04 16:32:14,678 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [317 Valid, 0 Invalid, 1178 Unknown, 0 Unchecked, 2.26ms Time], IncrementalHoareTripleChecker [4 Valid, 1174 Invalid, 0 Unknown, 0 Unchecked, 996.98ms Time] [2021-11-04 16:32:14,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2021-11-04 16:32:14,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 721. [2021-11-04 16:32:14,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 721 states, 705 states have (on average 1.3191489361702127) internal successors, (930), 720 states have internal predecessors, (930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:32:14,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 930 transitions. [2021-11-04 16:32:14,695 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 930 transitions. Word has length 97 [2021-11-04 16:32:14,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 16:32:14,695 INFO L470 AbstractCegarLoop]: Abstraction has 721 states and 930 transitions. [2021-11-04 16:32:14,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:32:14,696 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 930 transitions. [2021-11-04 16:32:14,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-04 16:32:14,697 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 16:32:14,697 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 16:32:14,726 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-04 16:32:14,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 16:32:14,924 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-04 16:32:14,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 16:32:14,925 INFO L85 PathProgramCache]: Analyzing trace with hash -371205377, now seen corresponding path program 1 times [2021-11-04 16:32:14,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 16:32:14,925 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689601685] [2021-11-04 16:32:14,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:32:14,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 16:32:14,940 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 16:32:14,940 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1765243085] [2021-11-04 16:32:14,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:32:14,940 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 16:32:14,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 16:32:14,942 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 16:32:14,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-04 16:32:15,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 16:32:15,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-04 16:32:15,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 16:32:15,286 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 16:32:15,286 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 16:32:15,286 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 16:32:15,286 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689601685] [2021-11-04 16:32:15,286 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 16:32:15,286 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1765243085] [2021-11-04 16:32:15,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1765243085] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 16:32:15,286 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 16:32:15,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 16:32:15,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123568742] [2021-11-04 16:32:15,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 16:32:15,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 16:32:15,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 16:32:15,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 16:32:15,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 16:32:15,287 INFO L87 Difference]: Start difference. First operand 721 states and 930 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:32:16,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 16:32:16,121 INFO L93 Difference]: Finished difference Result 1400 states and 1809 transitions. [2021-11-04 16:32:16,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 16:32:16,121 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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 104 [2021-11-04 16:32:16,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 16:32:16,124 INFO L225 Difference]: With dead ends: 1400 [2021-11-04 16:32:16,124 INFO L226 Difference]: Without dead ends: 727 [2021-11-04 16:32:16,125 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.71ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 16:32:16,126 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 576 mSDsCounter, 0 mSdLazyCounter, 1184 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 644.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.70ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 811.30ms IncrementalHoareTripleChecker+Time [2021-11-04 16:32:16,126 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 1190 Unknown, 0 Unchecked, 1.70ms Time], IncrementalHoareTripleChecker [6 Valid, 1184 Invalid, 0 Unknown, 0 Unchecked, 811.30ms Time] [2021-11-04 16:32:16,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2021-11-04 16:32:16,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 727. [2021-11-04 16:32:16,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 727 states, 711 states have (on average 1.3164556962025316) internal successors, (936), 726 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:32:16,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 936 transitions. [2021-11-04 16:32:16,142 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 936 transitions. Word has length 104 [2021-11-04 16:32:16,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 16:32:16,143 INFO L470 AbstractCegarLoop]: Abstraction has 727 states and 936 transitions. [2021-11-04 16:32:16,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:32:16,143 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 936 transitions. [2021-11-04 16:32:16,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-04 16:32:16,144 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 16:32:16,144 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 16:32:16,170 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-04 16:32:16,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 16:32:16,368 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-04 16:32:16,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 16:32:16,369 INFO L85 PathProgramCache]: Analyzing trace with hash -2085853600, now seen corresponding path program 1 times [2021-11-04 16:32:16,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 16:32:16,369 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909775675] [2021-11-04 16:32:16,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:32:16,369 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 16:32:16,381 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 16:32:16,381 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2010347197] [2021-11-04 16:32:16,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:32:16,382 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 16:32:16,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 16:32:16,383 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 16:32:16,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-04 16:32:16,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 16:32:16,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-04 16:32:16,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 16:32:16,729 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-04 16:32:16,729 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-04 16:32:16,903 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-04 16:32:16,903 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 16:32:16,903 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909775675] [2021-11-04 16:32:16,904 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 16:32:16,904 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2010347197] [2021-11-04 16:32:16,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2010347197] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-04 16:32:16,904 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-04 16:32:16,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-11-04 16:32:16,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220345158] [2021-11-04 16:32:16,904 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-04 16:32:16,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-04 16:32:16,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 16:32:16,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-04 16:32:16,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-04 16:32:16,905 INFO L87 Difference]: Start difference. First operand 727 states and 936 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:32:18,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 16:32:18,211 INFO L93 Difference]: Finished difference Result 1423 states and 1844 transitions. [2021-11-04 16:32:18,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-04 16:32:18,212 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 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 106 [2021-11-04 16:32:18,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 16:32:18,214 INFO L225 Difference]: With dead ends: 1423 [2021-11-04 16:32:18,214 INFO L226 Difference]: Without dead ends: 745 [2021-11-04 16:32:18,216 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.12ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-04 16:32:18,216 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 1152 mSDsCounter, 0 mSdLazyCounter, 1782 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1087.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.37ms SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1782 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1279.30ms IncrementalHoareTripleChecker+Time [2021-11-04 16:32:18,217 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 1813 Unknown, 0 Unchecked, 2.37ms Time], IncrementalHoareTripleChecker [31 Valid, 1782 Invalid, 0 Unknown, 0 Unchecked, 1279.30ms Time] [2021-11-04 16:32:18,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 745 states. [2021-11-04 16:32:18,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 745 to 745. [2021-11-04 16:32:18,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 745 states, 729 states have (on average 1.308641975308642) internal successors, (954), 744 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:32:18,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 745 states to 745 states and 954 transitions. [2021-11-04 16:32:18,247 INFO L78 Accepts]: Start accepts. Automaton has 745 states and 954 transitions. Word has length 106 [2021-11-04 16:32:18,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 16:32:18,247 INFO L470 AbstractCegarLoop]: Abstraction has 745 states and 954 transitions. [2021-11-04 16:32:18,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:32:18,247 INFO L276 IsEmpty]: Start isEmpty. Operand 745 states and 954 transitions. [2021-11-04 16:32:18,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-04 16:32:18,249 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 16:32:18,249 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 16:32:18,272 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-11-04 16:32:18,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 16:32:18,472 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-04 16:32:18,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 16:32:18,472 INFO L85 PathProgramCache]: Analyzing trace with hash -899210817, now seen corresponding path program 2 times [2021-11-04 16:32:18,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 16:32:18,473 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100082303] [2021-11-04 16:32:18,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:32:18,473 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 16:32:18,485 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 16:32:18,485 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1841197669] [2021-11-04 16:32:18,485 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-04 16:32:18,485 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 16:32:18,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 16:32:18,487 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 16:32:18,496 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-04 16:32:18,662 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-04 16:32:18,663 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-04 16:32:18,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-04 16:32:18,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 16:32:18,850 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-04 16:32:18,850 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-04 16:32:19,058 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-04 16:32:19,059 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 16:32:19,059 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100082303] [2021-11-04 16:32:19,059 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 16:32:19,059 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1841197669] [2021-11-04 16:32:19,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1841197669] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-04 16:32:19,059 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-04 16:32:19,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-11-04 16:32:19,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017489719] [2021-11-04 16:32:19,060 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-04 16:32:19,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-04 16:32:19,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 16:32:19,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-04 16:32:19,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-11-04 16:32:19,061 INFO L87 Difference]: Start difference. First operand 745 states and 954 transitions. Second operand has 12 states, 12 states have (on average 9.583333333333334) internal successors, (115), 12 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:32:21,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 16:32:21,009 INFO L93 Difference]: Finished difference Result 1474 states and 1913 transitions. [2021-11-04 16:32:21,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-04 16:32:21,009 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.583333333333334) internal successors, (115), 12 states have internal predecessors, (115), 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 112 [2021-11-04 16:32:21,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 16:32:21,011 INFO L225 Difference]: With dead ends: 1474 [2021-11-04 16:32:21,012 INFO L226 Difference]: Without dead ends: 781 [2021-11-04 16:32:21,013 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 63.57ms TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-11-04 16:32:21,013 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 2304 mSDsCounter, 0 mSdLazyCounter, 2978 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1591.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.72ms SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 2978 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1909.31ms IncrementalHoareTripleChecker+Time [2021-11-04 16:32:21,014 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 3070 Unknown, 0 Unchecked, 3.72ms Time], IncrementalHoareTripleChecker [92 Valid, 2978 Invalid, 0 Unknown, 0 Unchecked, 1909.31ms Time] [2021-11-04 16:32:21,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 781 states. [2021-11-04 16:32:21,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 781 to 781. [2021-11-04 16:32:21,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 781 states, 765 states have (on average 1.2941176470588236) internal successors, (990), 780 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:32:21,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 781 states to 781 states and 990 transitions. [2021-11-04 16:32:21,032 INFO L78 Accepts]: Start accepts. Automaton has 781 states and 990 transitions. Word has length 112 [2021-11-04 16:32:21,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 16:32:21,032 INFO L470 AbstractCegarLoop]: Abstraction has 781 states and 990 transitions. [2021-11-04 16:32:21,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.583333333333334) internal successors, (115), 12 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:32:21,032 INFO L276 IsEmpty]: Start isEmpty. Operand 781 states and 990 transitions. [2021-11-04 16:32:21,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-04 16:32:21,034 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 16:32:21,034 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 16:32:21,059 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-04 16:32:21,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-04 16:32:21,255 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-04 16:32:21,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 16:32:21,255 INFO L85 PathProgramCache]: Analyzing trace with hash 758407135, now seen corresponding path program 3 times [2021-11-04 16:32:21,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 16:32:21,255 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81597449] [2021-11-04 16:32:21,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:32:21,256 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 16:32:21,286 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 16:32:21,286 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [47751691] [2021-11-04 16:32:21,286 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-04 16:32:21,286 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 16:32:21,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 16:32:21,288 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 16:32:21,290 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-04 16:32:21,461 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-04 16:32:21,461 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-04 16:32:21,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-04 16:32:21,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 16:32:21,499 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-04 16:32:21,568 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 39 [2021-11-04 16:32:21,740 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2021-11-04 16:32:21,740 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 16:32:21,741 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 16:32:21,741 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81597449] [2021-11-04 16:32:21,741 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 16:32:21,741 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [47751691] [2021-11-04 16:32:21,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [47751691] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 16:32:21,741 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 16:32:21,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-04 16:32:21,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402176331] [2021-11-04 16:32:21,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 16:32:21,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-04 16:32:21,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 16:32:21,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-04 16:32:21,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-04 16:32:21,744 INFO L87 Difference]: Start difference. First operand 781 states and 990 transitions. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:32:23,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 16:32:23,377 INFO L93 Difference]: Finished difference Result 1452 states and 1842 transitions. [2021-11-04 16:32:23,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-04 16:32:23,377 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 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 124 [2021-11-04 16:32:23,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 16:32:23,380 INFO L225 Difference]: With dead ends: 1452 [2021-11-04 16:32:23,380 INFO L226 Difference]: Without dead ends: 781 [2021-11-04 16:32:23,381 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 32.99ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-04 16:32:23,382 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 96 mSDsluCounter, 1448 mSDsCounter, 0 mSdLazyCounter, 2375 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1286.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.95ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 2375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1577.46ms IncrementalHoareTripleChecker+Time [2021-11-04 16:32:23,382 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 0 Invalid, 2387 Unknown, 0 Unchecked, 4.95ms Time], IncrementalHoareTripleChecker [12 Valid, 2375 Invalid, 0 Unknown, 0 Unchecked, 1577.46ms Time] [2021-11-04 16:32:23,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 781 states. [2021-11-04 16:32:23,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 781 to 781. [2021-11-04 16:32:23,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 781 states, 765 states have (on average 1.29281045751634) internal successors, (989), 780 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:32:23,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 781 states to 781 states and 989 transitions. [2021-11-04 16:32:23,399 INFO L78 Accepts]: Start accepts. Automaton has 781 states and 989 transitions. Word has length 124 [2021-11-04 16:32:23,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 16:32:23,399 INFO L470 AbstractCegarLoop]: Abstraction has 781 states and 989 transitions. [2021-11-04 16:32:23,399 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:32:23,399 INFO L276 IsEmpty]: Start isEmpty. Operand 781 states and 989 transitions. [2021-11-04 16:32:23,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-11-04 16:32:23,401 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 16:32:23,401 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 16:32:23,429 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-04 16:32:23,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 16:32:23,624 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-04 16:32:23,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 16:32:23,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1889355962, now seen corresponding path program 1 times [2021-11-04 16:32:23,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 16:32:23,625 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645002638] [2021-11-04 16:32:23,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:32:23,625 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 16:32:23,651 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 16:32:23,651 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1925733121] [2021-11-04 16:32:23,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:32:23,651 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 16:32:23,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 16:32:23,652 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 16:32:23,667 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-04 16:32:23,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 16:32:23,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 602 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-04 16:32:23,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 16:32:24,157 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2021-11-04 16:32:24,157 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 16:32:24,158 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 16:32:24,158 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645002638] [2021-11-04 16:32:24,158 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 16:32:24,158 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1925733121] [2021-11-04 16:32:24,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1925733121] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 16:32:24,158 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 16:32:24,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 16:32:24,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564638220] [2021-11-04 16:32:24,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 16:32:24,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 16:32:24,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 16:32:24,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 16:32:24,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 16:32:24,160 INFO L87 Difference]: Start difference. First operand 781 states and 989 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:32:25,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 16:32:25,077 INFO L93 Difference]: Finished difference Result 1586 states and 2019 transitions. [2021-11-04 16:32:25,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 16:32:25,078 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 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 171 [2021-11-04 16:32:25,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 16:32:25,080 INFO L225 Difference]: With dead ends: 1586 [2021-11-04 16:32:25,080 INFO L226 Difference]: Without dead ends: 823 [2021-11-04 16:32:25,081 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.36ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 16:32:25,082 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 9 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 1177 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 735.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.14ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 894.03ms IncrementalHoareTripleChecker+Time [2021-11-04 16:32:25,082 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 0 Invalid, 1205 Unknown, 0 Unchecked, 1.14ms Time], IncrementalHoareTripleChecker [28 Valid, 1177 Invalid, 0 Unknown, 0 Unchecked, 894.03ms Time] [2021-11-04 16:32:25,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 823 states. [2021-11-04 16:32:25,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 823 to 821. [2021-11-04 16:32:25,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 821 states, 805 states have (on average 1.2782608695652173) internal successors, (1029), 820 states have internal predecessors, (1029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:32:25,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 1029 transitions. [2021-11-04 16:32:25,098 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 1029 transitions. Word has length 171 [2021-11-04 16:32:25,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 16:32:25,098 INFO L470 AbstractCegarLoop]: Abstraction has 821 states and 1029 transitions. [2021-11-04 16:32:25,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:32:25,099 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 1029 transitions. [2021-11-04 16:32:25,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-11-04 16:32:25,100 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 16:32:25,100 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 16:32:25,125 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-04 16:32:25,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-04 16:32:25,315 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-04 16:32:25,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 16:32:25,316 INFO L85 PathProgramCache]: Analyzing trace with hash 508631876, now seen corresponding path program 1 times [2021-11-04 16:32:25,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 16:32:25,316 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233084478] [2021-11-04 16:32:25,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:32:25,316 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 16:32:25,331 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 16:32:25,331 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1193518410] [2021-11-04 16:32:25,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:32:25,331 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 16:32:25,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 16:32:25,333 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 16:32:25,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-04 16:32:25,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 16:32:25,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 604 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-04 16:32:25,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 16:32:25,869 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2021-11-04 16:32:25,869 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 16:32:25,869 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 16:32:25,869 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233084478] [2021-11-04 16:32:25,869 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 16:32:25,870 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1193518410] [2021-11-04 16:32:25,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1193518410] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 16:32:25,870 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 16:32:25,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 16:32:25,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313075317] [2021-11-04 16:32:25,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 16:32:25,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 16:32:25,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 16:32:25,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 16:32:25,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 16:32:25,871 INFO L87 Difference]: Start difference. First operand 821 states and 1029 transitions. Second operand has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:32:26,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 16:32:26,800 INFO L93 Difference]: Finished difference Result 1580 states and 1984 transitions. [2021-11-04 16:32:26,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-04 16:32:26,801 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 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 171 [2021-11-04 16:32:26,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 16:32:26,803 INFO L225 Difference]: With dead ends: 1580 [2021-11-04 16:32:26,803 INFO L226 Difference]: Without dead ends: 795 [2021-11-04 16:32:26,804 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.03ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 16:32:26,804 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 582 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 1187 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 735.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 582 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.47ms SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 900.89ms IncrementalHoareTripleChecker+Time [2021-11-04 16:32:26,805 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [582 Valid, 0 Invalid, 1212 Unknown, 0 Unchecked, 1.47ms Time], IncrementalHoareTripleChecker [25 Valid, 1187 Invalid, 0 Unknown, 0 Unchecked, 900.89ms Time] [2021-11-04 16:32:26,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 795 states. [2021-11-04 16:32:26,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 795 to 793. [2021-11-04 16:32:26,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 793 states, 777 states have (on average 1.2702702702702702) internal successors, (987), 792 states have internal predecessors, (987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:32:26,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 793 states to 793 states and 987 transitions. [2021-11-04 16:32:26,820 INFO L78 Accepts]: Start accepts. Automaton has 793 states and 987 transitions. Word has length 171 [2021-11-04 16:32:26,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 16:32:26,820 INFO L470 AbstractCegarLoop]: Abstraction has 793 states and 987 transitions. [2021-11-04 16:32:26,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:32:26,821 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states and 987 transitions. [2021-11-04 16:32:26,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-11-04 16:32:26,822 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 16:32:26,823 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 16:32:26,847 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-11-04 16:32:27,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-04 16:32:27,040 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-04 16:32:27,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 16:32:27,040 INFO L85 PathProgramCache]: Analyzing trace with hash -288240300, now seen corresponding path program 1 times [2021-11-04 16:32:27,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 16:32:27,040 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416251287] [2021-11-04 16:32:27,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:32:27,040 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 16:32:27,064 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 16:32:27,064 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1079830162] [2021-11-04 16:32:27,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:32:27,064 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 16:32:27,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 16:32:27,065 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 16:32:27,070 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-04 16:32:27,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 16:32:27,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 588 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-04 16:32:27,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 16:32:27,552 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2021-11-04 16:32:27,553 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 16:32:27,553 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 16:32:27,553 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416251287] [2021-11-04 16:32:27,553 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 16:32:27,553 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1079830162] [2021-11-04 16:32:27,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1079830162] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 16:32:27,554 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 16:32:27,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-04 16:32:27,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368176927] [2021-11-04 16:32:27,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 16:32:27,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-04 16:32:27,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 16:32:27,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-04 16:32:27,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 16:32:27,556 INFO L87 Difference]: Start difference. First operand 793 states and 987 transitions. Second operand has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:32:29,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 16:32:29,449 INFO L93 Difference]: Finished difference Result 2335 states and 2912 transitions. [2021-11-04 16:32:29,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-04 16:32:29,449 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 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 171 [2021-11-04 16:32:29,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 16:32:29,453 INFO L225 Difference]: With dead ends: 2335 [2021-11-04 16:32:29,453 INFO L226 Difference]: Without dead ends: 1580 [2021-11-04 16:32:29,454 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 7.10ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 16:32:29,454 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 568 mSDsluCounter, 1698 mSDsCounter, 0 mSdLazyCounter, 2369 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1537.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 568 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.94ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 2369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1844.58ms IncrementalHoareTripleChecker+Time [2021-11-04 16:32:29,454 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [568 Valid, 0 Invalid, 2393 Unknown, 0 Unchecked, 4.94ms Time], IncrementalHoareTripleChecker [24 Valid, 2369 Invalid, 0 Unknown, 0 Unchecked, 1844.58ms Time] [2021-11-04 16:32:29,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1580 states. [2021-11-04 16:32:29,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1580 to 839. [2021-11-04 16:32:29,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 839 states, 823 states have (on average 1.2600243013365735) internal successors, (1037), 838 states have internal predecessors, (1037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:32:29,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 839 states to 839 states and 1037 transitions. [2021-11-04 16:32:29,476 INFO L78 Accepts]: Start accepts. Automaton has 839 states and 1037 transitions. Word has length 171 [2021-11-04 16:32:29,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 16:32:29,477 INFO L470 AbstractCegarLoop]: Abstraction has 839 states and 1037 transitions. [2021-11-04 16:32:29,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:32:29,477 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states and 1037 transitions. [2021-11-04 16:32:29,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-11-04 16:32:29,479 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 16:32:29,479 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 16:32:29,507 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-04 16:32:29,707 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,SelfDestructingSolverStorable13 [2021-11-04 16:32:29,708 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-04 16:32:29,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 16:32:29,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1805536166, now seen corresponding path program 1 times [2021-11-04 16:32:29,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 16:32:29,708 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799197375] [2021-11-04 16:32:29,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:32:29,709 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 16:32:29,720 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 16:32:29,720 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [411367559] [2021-11-04 16:32:29,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:32:29,720 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 16:32:29,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 16:32:29,722 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 16:32:29,723 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-04 16:32:29,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 16:32:29,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-04 16:32:29,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 16:32:30,152 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2021-11-04 16:32:30,153 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 16:32:30,153 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 16:32:30,153 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799197375] [2021-11-04 16:32:30,153 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 16:32:30,153 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [411367559] [2021-11-04 16:32:30,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [411367559] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 16:32:30,154 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 16:32:30,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 16:32:30,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793695095] [2021-11-04 16:32:30,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 16:32:30,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 16:32:30,155 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 16:32:30,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 16:32:30,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 16:32:30,156 INFO L87 Difference]: Start difference. First operand 839 states and 1037 transitions. Second operand has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:32:30,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 16:32:30,998 INFO L93 Difference]: Finished difference Result 1587 states and 1971 transitions. [2021-11-04 16:32:30,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-04 16:32:30,998 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 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 171 [2021-11-04 16:32:30,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 16:32:31,001 INFO L225 Difference]: With dead ends: 1587 [2021-11-04 16:32:31,001 INFO L226 Difference]: Without dead ends: 775 [2021-11-04 16:32:31,002 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.28ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 16:32:31,003 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 562 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 1175 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 654.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 562 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.95ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 814.46ms IncrementalHoareTripleChecker+Time [2021-11-04 16:32:31,003 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [562 Valid, 0 Invalid, 1182 Unknown, 0 Unchecked, 1.95ms Time], IncrementalHoareTripleChecker [7 Valid, 1175 Invalid, 0 Unknown, 0 Unchecked, 814.46ms Time] [2021-11-04 16:32:31,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 775 states. [2021-11-04 16:32:31,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 775 to 775. [2021-11-04 16:32:31,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 775 states, 759 states have (on average 1.2635046113306982) internal successors, (959), 774 states have internal predecessors, (959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:32:31,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775 states to 775 states and 959 transitions. [2021-11-04 16:32:31,020 INFO L78 Accepts]: Start accepts. Automaton has 775 states and 959 transitions. Word has length 171 [2021-11-04 16:32:31,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 16:32:31,020 INFO L470 AbstractCegarLoop]: Abstraction has 775 states and 959 transitions. [2021-11-04 16:32:31,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:32:31,021 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states and 959 transitions. [2021-11-04 16:32:31,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-11-04 16:32:31,022 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 16:32:31,023 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 16:32:31,057 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-04 16:32:31,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-04 16:32:31,247 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-04 16:32:31,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 16:32:31,248 INFO L85 PathProgramCache]: Analyzing trace with hash 2109747538, now seen corresponding path program 1 times [2021-11-04 16:32:31,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 16:32:31,248 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377277945] [2021-11-04 16:32:31,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:32:31,249 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 16:32:31,261 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 16:32:31,262 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [36319563] [2021-11-04 16:32:31,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:32:31,262 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 16:32:31,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 16:32:31,263 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 16:32:31,264 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-04 16:32:31,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 16:32:31,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 590 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-04 16:32:31,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 16:32:31,848 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 2 proven. 55 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-04 16:32:31,849 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-04 16:32:32,280 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 2 proven. 55 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-04 16:32:32,281 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 16:32:32,281 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377277945] [2021-11-04 16:32:32,281 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 16:32:32,281 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [36319563] [2021-11-04 16:32:32,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [36319563] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-04 16:32:32,281 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-04 16:32:32,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2021-11-04 16:32:32,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496745598] [2021-11-04 16:32:32,282 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-04 16:32:32,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-04 16:32:32,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 16:32:32,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-04 16:32:32,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-11-04 16:32:32,283 INFO L87 Difference]: Start difference. First operand 775 states and 959 transitions. Second operand has 24 states, 24 states have (on average 7.25) internal successors, (174), 24 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:32:33,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 16:32:33,789 INFO L93 Difference]: Finished difference Result 1567 states and 2005 transitions. [2021-11-04 16:32:33,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-04 16:32:33,790 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 7.25) internal successors, (174), 24 states have internal predecessors, (174), 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 171 [2021-11-04 16:32:33,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 16:32:33,792 INFO L225 Difference]: With dead ends: 1567 [2021-11-04 16:32:33,793 INFO L226 Difference]: Without dead ends: 847 [2021-11-04 16:32:33,794 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 318 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 257.03ms TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-11-04 16:32:33,794 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 1122 mSDsCounter, 0 mSdLazyCounter, 1809 mSolverCounterSat, 243 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1193.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2052 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.99ms SdHoareTripleChecker+Time, 243 IncrementalHoareTripleChecker+Valid, 1809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1457.03ms IncrementalHoareTripleChecker+Time [2021-11-04 16:32:33,794 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 2052 Unknown, 0 Unchecked, 3.99ms Time], IncrementalHoareTripleChecker [243 Valid, 1809 Invalid, 0 Unknown, 0 Unchecked, 1457.03ms Time] [2021-11-04 16:32:33,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2021-11-04 16:32:33,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 847. [2021-11-04 16:32:33,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 847 states, 831 states have (on average 1.2406738868832732) internal successors, (1031), 846 states have internal predecessors, (1031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:32:33,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 1031 transitions. [2021-11-04 16:32:33,814 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 1031 transitions. Word has length 171 [2021-11-04 16:32:33,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 16:32:33,814 INFO L470 AbstractCegarLoop]: Abstraction has 847 states and 1031 transitions. [2021-11-04 16:32:33,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 7.25) internal successors, (174), 24 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:32:33,815 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 1031 transitions. [2021-11-04 16:32:33,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-11-04 16:32:33,816 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 16:32:33,817 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 16:32:33,843 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-04 16:32:34,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 16:32:34,036 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-04 16:32:34,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 16:32:34,036 INFO L85 PathProgramCache]: Analyzing trace with hash 416222354, now seen corresponding path program 2 times [2021-11-04 16:32:34,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 16:32:34,036 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242014581] [2021-11-04 16:32:34,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:32:34,036 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 16:32:34,049 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 16:32:34,050 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [692717030] [2021-11-04 16:32:34,050 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-04 16:32:34,050 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 16:32:34,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 16:32:34,051 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 16:32:34,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-04 16:32:34,277 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-04 16:32:34,277 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-04 16:32:34,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 734 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-04 16:32:34,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 16:32:34,830 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 2 proven. 253 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2021-11-04 16:32:34,830 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-04 16:32:35,987 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 2 proven. 253 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2021-11-04 16:32:35,987 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 16:32:35,988 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242014581] [2021-11-04 16:32:35,988 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 16:32:35,988 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [692717030] [2021-11-04 16:32:35,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [692717030] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-04 16:32:35,988 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-04 16:32:35,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 48 [2021-11-04 16:32:35,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889898110] [2021-11-04 16:32:35,988 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-04 16:32:35,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-11-04 16:32:35,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 16:32:35,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-11-04 16:32:35,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1127, Invalid=1129, Unknown=0, NotChecked=0, Total=2256 [2021-11-04 16:32:35,990 INFO L87 Difference]: Start difference. First operand 847 states and 1031 transitions. Second operand has 48 states, 48 states have (on average 4.125) internal successors, (198), 48 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:32:38,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 16:32:38,567 INFO L93 Difference]: Finished difference Result 1759 states and 2257 transitions. [2021-11-04 16:32:38,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-11-04 16:32:38,567 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 4.125) internal successors, (198), 48 states have internal predecessors, (198), 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 195 [2021-11-04 16:32:38,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 16:32:38,571 INFO L225 Difference]: With dead ends: 1759 [2021-11-04 16:32:38,571 INFO L226 Difference]: Without dead ends: 979 [2021-11-04 16:32:38,573 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1120.50ms TimeCoverageRelationStatistics Valid=1127, Invalid=1129, Unknown=0, NotChecked=0, Total=2256 [2021-11-04 16:32:38,573 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 2244 mSDsCounter, 0 mSdLazyCounter, 3043 mSolverCounterSat, 602 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1962.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.19ms SdHoareTripleChecker+Time, 602 IncrementalHoareTripleChecker+Valid, 3043 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2443.07ms IncrementalHoareTripleChecker+Time [2021-11-04 16:32:38,573 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 3645 Unknown, 0 Unchecked, 8.19ms Time], IncrementalHoareTripleChecker [602 Valid, 3043 Invalid, 0 Unknown, 0 Unchecked, 2443.07ms Time] [2021-11-04 16:32:38,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 979 states. [2021-11-04 16:32:38,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 979 to 979. [2021-11-04 16:32:38,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 979 states, 963 states have (on average 1.2076843198338525) internal successors, (1163), 978 states have internal predecessors, (1163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:32:38,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 979 states to 979 states and 1163 transitions. [2021-11-04 16:32:38,598 INFO L78 Accepts]: Start accepts. Automaton has 979 states and 1163 transitions. Word has length 195 [2021-11-04 16:32:38,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 16:32:38,599 INFO L470 AbstractCegarLoop]: Abstraction has 979 states and 1163 transitions. [2021-11-04 16:32:38,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 4.125) internal successors, (198), 48 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:32:38,599 INFO L276 IsEmpty]: Start isEmpty. Operand 979 states and 1163 transitions. [2021-11-04 16:32:38,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2021-11-04 16:32:38,602 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 16:32:38,602 INFO L514 BasicCegarLoop]: trace histogram [44, 44, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 16:32:38,628 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-04 16:32:38,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-04 16:32:38,828 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-04 16:32:38,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 16:32:38,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1136112334, now seen corresponding path program 3 times [2021-11-04 16:32:38,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 16:32:38,828 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763015705] [2021-11-04 16:32:38,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:32:38,829 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 16:32:38,850 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 16:32:38,850 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1430352325] [2021-11-04 16:32:38,850 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-04 16:32:38,851 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 16:32:38,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 16:32:38,852 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 16:32:38,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-04 16:32:39,084 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-04 16:32:39,085 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-04 16:32:39,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-04 16:32:39,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 16:32:39,486 INFO L134 CoverageAnalysis]: Checked inductivity of 1982 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1980 trivial. 0 not checked. [2021-11-04 16:32:39,486 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 16:32:39,486 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 16:32:39,486 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763015705] [2021-11-04 16:32:39,486 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 16:32:39,487 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430352325] [2021-11-04 16:32:39,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1430352325] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 16:32:39,487 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 16:32:39,487 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 16:32:39,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332874332] [2021-11-04 16:32:39,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 16:32:39,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 16:32:39,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 16:32:39,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 16:32:39,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 16:32:39,488 INFO L87 Difference]: Start difference. First operand 979 states and 1163 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:32:40,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 16:32:40,419 INFO L93 Difference]: Finished difference Result 2139 states and 2607 transitions. [2021-11-04 16:32:40,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 16:32:40,420 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 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 239 [2021-11-04 16:32:40,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 16:32:40,423 INFO L225 Difference]: With dead ends: 2139 [2021-11-04 16:32:40,423 INFO L226 Difference]: Without dead ends: 1297 [2021-11-04 16:32:40,424 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.10ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 16:32:40,425 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 294 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 1144 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 722.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.38ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 889.65ms IncrementalHoareTripleChecker+Time [2021-11-04 16:32:40,425 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [294 Valid, 0 Invalid, 1148 Unknown, 0 Unchecked, 1.38ms Time], IncrementalHoareTripleChecker [4 Valid, 1144 Invalid, 0 Unknown, 0 Unchecked, 889.65ms Time] [2021-11-04 16:32:40,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1297 states. [2021-11-04 16:32:40,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1297 to 1140. [2021-11-04 16:32:40,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1140 states, 1124 states have (on average 1.2366548042704626) internal successors, (1390), 1139 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:32:40,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1140 states to 1140 states and 1390 transitions. [2021-11-04 16:32:40,455 INFO L78 Accepts]: Start accepts. Automaton has 1140 states and 1390 transitions. Word has length 239 [2021-11-04 16:32:40,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 16:32:40,455 INFO L470 AbstractCegarLoop]: Abstraction has 1140 states and 1390 transitions. [2021-11-04 16:32:40,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:32:40,456 INFO L276 IsEmpty]: Start isEmpty. Operand 1140 states and 1390 transitions. [2021-11-04 16:32:40,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2021-11-04 16:32:40,458 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 16:32:40,458 INFO L514 BasicCegarLoop]: trace histogram [44, 44, 44, 44, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 16:32:40,482 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-04 16:32:40,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-04 16:32:40,671 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-04 16:32:40,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 16:32:40,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1114316862, now seen corresponding path program 1 times [2021-11-04 16:32:40,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 16:32:40,672 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590598745] [2021-11-04 16:32:40,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:32:40,672 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 16:32:40,695 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 16:32:40,696 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [312305470] [2021-11-04 16:32:40,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:32:40,696 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 16:32:40,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 16:32:40,697 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 16:32:40,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-04 16:32:41,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 16:32:41,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 1610 conjuncts, 47 conjunts are in the unsatisfiable core [2021-11-04 16:32:41,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 16:32:42,462 INFO L134 CoverageAnalysis]: Checked inductivity of 3962 backedges. 2 proven. 990 refuted. 0 times theorem prover too weak. 2970 trivial. 0 not checked. [2021-11-04 16:32:42,462 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-04 16:32:47,257 INFO L134 CoverageAnalysis]: Checked inductivity of 3962 backedges. 2 proven. 990 refuted. 0 times theorem prover too weak. 2970 trivial. 0 not checked. [2021-11-04 16:32:47,258 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 16:32:47,258 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590598745] [2021-11-04 16:32:47,258 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 16:32:47,258 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [312305470] [2021-11-04 16:32:47,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [312305470] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-04 16:32:47,258 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-04 16:32:47,259 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 92 [2021-11-04 16:32:47,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197388253] [2021-11-04 16:32:47,259 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-04 16:32:47,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2021-11-04 16:32:47,260 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 16:32:47,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2021-11-04 16:32:47,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4186, Invalid=4186, Unknown=0, NotChecked=0, Total=8372 [2021-11-04 16:32:47,263 INFO L87 Difference]: Start difference. First operand 1140 states and 1390 transitions. Second operand has 92 states, 92 states have (on average 2.7282608695652173) internal successors, (251), 92 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:32:49,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 16:32:49,637 INFO L93 Difference]: Finished difference Result 2284 states and 2920 transitions. [2021-11-04 16:32:49,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2021-11-04 16:32:49,638 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 92 states have (on average 2.7282608695652173) internal successors, (251), 92 states have internal predecessors, (251), 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 334 [2021-11-04 16:32:49,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 16:32:49,641 INFO L225 Difference]: With dead ends: 2284 [2021-11-04 16:32:49,641 INFO L226 Difference]: Without dead ends: 1278 [2021-11-04 16:32:49,643 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 666 GetRequests, 576 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5066.01ms TimeCoverageRelationStatistics Valid=4186, Invalid=4186, Unknown=0, NotChecked=0, Total=8372 [2021-11-04 16:32:49,643 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 1122 mSDsCounter, 0 mSdLazyCounter, 2005 mSolverCounterSat, 847 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1617.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.67ms SdHoareTripleChecker+Time, 847 IncrementalHoareTripleChecker+Valid, 2005 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2033.77ms IncrementalHoareTripleChecker+Time [2021-11-04 16:32:49,644 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 2852 Unknown, 0 Unchecked, 5.67ms Time], IncrementalHoareTripleChecker [847 Valid, 2005 Invalid, 0 Unknown, 0 Unchecked, 2033.77ms Time] [2021-11-04 16:32:49,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1278 states. [2021-11-04 16:32:49,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1278 to 1278. [2021-11-04 16:32:49,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1278 states, 1262 states have (on average 1.2107765451664025) internal successors, (1528), 1277 states have internal predecessors, (1528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:32:49,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1278 states to 1278 states and 1528 transitions. [2021-11-04 16:32:49,681 INFO L78 Accepts]: Start accepts. Automaton has 1278 states and 1528 transitions. Word has length 334 [2021-11-04 16:32:49,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 16:32:49,682 INFO L470 AbstractCegarLoop]: Abstraction has 1278 states and 1528 transitions. [2021-11-04 16:32:49,682 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 92 states have (on average 2.7282608695652173) internal successors, (251), 92 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:32:49,682 INFO L276 IsEmpty]: Start isEmpty. Operand 1278 states and 1528 transitions. [2021-11-04 16:32:49,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2021-11-04 16:32:49,685 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 16:32:49,685 INFO L514 BasicCegarLoop]: trace histogram [90, 90, 44, 44, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 16:32:49,710 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-04 16:32:49,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 16:32:49,900 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-04 16:32:49,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 16:32:49,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1833055330, now seen corresponding path program 2 times [2021-11-04 16:32:49,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 16:32:49,900 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010005101] [2021-11-04 16:32:49,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:32:49,900 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 16:32:49,933 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 16:32:49,934 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [560176990] [2021-11-04 16:32:49,934 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-04 16:32:49,934 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 16:32:49,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 16:32:49,935 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 16:32:49,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-04 16:32:50,421 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-04 16:32:50,421 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-04 16:32:50,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 2162 conjuncts, 93 conjunts are in the unsatisfiable core [2021-11-04 16:32:50,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 16:32:54,287 INFO L134 CoverageAnalysis]: Checked inductivity of 10172 backedges. 2 proven. 4095 refuted. 0 times theorem prover too weak. 6075 trivial. 0 not checked. [2021-11-04 16:32:54,287 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-04 16:33:23,384 INFO L134 CoverageAnalysis]: Checked inductivity of 10172 backedges. 2 proven. 4095 refuted. 0 times theorem prover too weak. 6075 trivial. 0 not checked. [2021-11-04 16:33:23,384 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 16:33:23,385 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010005101] [2021-11-04 16:33:23,385 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 16:33:23,385 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [560176990] [2021-11-04 16:33:23,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [560176990] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-04 16:33:23,385 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-04 16:33:23,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 93] total 184 [2021-11-04 16:33:23,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015140266] [2021-11-04 16:33:23,386 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-04 16:33:23,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 184 states [2021-11-04 16:33:23,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 16:33:23,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 184 interpolants. [2021-11-04 16:33:23,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16836, Invalid=16836, Unknown=0, NotChecked=0, Total=33672 [2021-11-04 16:33:23,396 INFO L87 Difference]: Start difference. First operand 1278 states and 1528 transitions. Second operand has 184 states, 184 states have (on average 1.8641304347826086) internal successors, (343), 184 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:33:32,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 16:33:32,343 INFO L93 Difference]: Finished difference Result 2652 states and 3426 transitions. [2021-11-04 16:33:32,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 184 states. [2021-11-04 16:33:32,344 INFO L78 Accepts]: Start accepts. Automaton has has 184 states, 184 states have (on average 1.8641304347826086) internal successors, (343), 184 states have internal predecessors, (343), 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 426 [2021-11-04 16:33:32,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 16:33:32,348 INFO L225 Difference]: With dead ends: 2652 [2021-11-04 16:33:32,348 INFO L226 Difference]: Without dead ends: 1554 [2021-11-04 16:33:32,352 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 850 GetRequests, 668 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 31211.79ms TimeCoverageRelationStatistics Valid=16836, Invalid=16836, Unknown=0, NotChecked=0, Total=33672 [2021-11-04 16:33:32,353 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 3927 mSDsCounter, 0 mSdLazyCounter, 5048 mSolverCounterSat, 1336 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4792.92ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 6384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.02ms SdHoareTripleChecker+Time, 1336 IncrementalHoareTripleChecker+Valid, 5048 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6330.65ms IncrementalHoareTripleChecker+Time [2021-11-04 16:33:32,353 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 6384 Unknown, 0 Unchecked, 13.02ms Time], IncrementalHoareTripleChecker [1336 Valid, 5048 Invalid, 0 Unknown, 0 Unchecked, 6330.65ms Time] [2021-11-04 16:33:32,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1554 states. [2021-11-04 16:33:32,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1554 to 1554. [2021-11-04 16:33:32,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1554 states, 1538 states have (on average 1.1729518855656698) internal successors, (1804), 1553 states have internal predecessors, (1804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:33:32,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1554 states to 1554 states and 1804 transitions. [2021-11-04 16:33:32,401 INFO L78 Accepts]: Start accepts. Automaton has 1554 states and 1804 transitions. Word has length 426 [2021-11-04 16:33:32,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 16:33:32,402 INFO L470 AbstractCegarLoop]: Abstraction has 1554 states and 1804 transitions. [2021-11-04 16:33:32,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 184 states, 184 states have (on average 1.8641304347826086) internal successors, (343), 184 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:33:32,402 INFO L276 IsEmpty]: Start isEmpty. Operand 1554 states and 1804 transitions. [2021-11-04 16:33:32,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 611 [2021-11-04 16:33:32,406 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 16:33:32,406 INFO L514 BasicCegarLoop]: trace histogram [182, 182, 44, 44, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 16:33:32,436 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-04 16:33:32,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 16:33:32,632 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-04 16:33:32,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 16:33:32,632 INFO L85 PathProgramCache]: Analyzing trace with hash 2138539426, now seen corresponding path program 3 times [2021-11-04 16:33:32,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 16:33:32,632 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158815232] [2021-11-04 16:33:32,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:33:32,633 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 16:33:32,671 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 16:33:32,671 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1957445153] [2021-11-04 16:33:32,671 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-04 16:33:32,672 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 16:33:32,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 16:33:32,673 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 16:33:32,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-04 16:33:32,967 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-04 16:33:32,967 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-04 16:33:32,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 554 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-04 16:33:33,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 16:33:34,020 INFO L134 CoverageAnalysis]: Checked inductivity of 35288 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 35286 trivial. 0 not checked. [2021-11-04 16:33:34,020 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 16:33:34,021 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 16:33:34,021 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158815232] [2021-11-04 16:33:34,021 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 16:33:34,021 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1957445153] [2021-11-04 16:33:34,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1957445153] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 16:33:34,021 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 16:33:34,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 16:33:34,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140845975] [2021-11-04 16:33:34,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 16:33:34,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 16:33:34,023 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 16:33:34,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 16:33:34,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 16:33:34,023 INFO L87 Difference]: Start difference. First operand 1554 states and 1804 transitions. Second operand has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:33:34,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 16:33:34,865 INFO L93 Difference]: Finished difference Result 2357 states and 2769 transitions. [2021-11-04 16:33:34,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-04 16:33:34,866 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 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 610 [2021-11-04 16:33:34,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 16:33:34,870 INFO L225 Difference]: With dead ends: 2357 [2021-11-04 16:33:34,870 INFO L226 Difference]: Without dead ends: 1156 [2021-11-04 16:33:34,871 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 611 GetRequests, 608 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.42ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 16:33:34,872 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 987 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 667 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 648.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 987 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.36ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 792.26ms IncrementalHoareTripleChecker+Time [2021-11-04 16:33:34,872 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [987 Valid, 0 Invalid, 669 Unknown, 0 Unchecked, 2.36ms Time], IncrementalHoareTripleChecker [2 Valid, 667 Invalid, 0 Unknown, 0 Unchecked, 792.26ms Time] [2021-11-04 16:33:34,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1156 states. [2021-11-04 16:33:34,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1156 to 1156. [2021-11-04 16:33:34,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1156 states, 1140 states have (on average 1.169298245614035) internal successors, (1333), 1155 states have internal predecessors, (1333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:33:34,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1156 states to 1156 states and 1333 transitions. [2021-11-04 16:33:34,913 INFO L78 Accepts]: Start accepts. Automaton has 1156 states and 1333 transitions. Word has length 610 [2021-11-04 16:33:34,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 16:33:34,913 INFO L470 AbstractCegarLoop]: Abstraction has 1156 states and 1333 transitions. [2021-11-04 16:33:34,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:33:34,914 INFO L276 IsEmpty]: Start isEmpty. Operand 1156 states and 1333 transitions. [2021-11-04 16:33:34,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 618 [2021-11-04 16:33:34,919 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 16:33:34,919 INFO L514 BasicCegarLoop]: trace histogram [182, 182, 44, 44, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 16:33:34,937 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-11-04 16:33:35,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 16:33:35,124 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-04 16:33:35,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 16:33:35,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1511974763, now seen corresponding path program 1 times [2021-11-04 16:33:35,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 16:33:35,124 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574463474] [2021-11-04 16:33:35,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:33:35,125 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 16:33:35,156 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 16:33:35,157 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [769972267] [2021-11-04 16:33:35,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:33:35,157 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 16:33:35,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 16:33:35,158 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 16:33:35,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-04 16:33:35,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 16:33:35,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 3291 conjuncts, 185 conjunts are in the unsatisfiable core [2021-11-04 16:33:35,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 16:33:48,836 INFO L134 CoverageAnalysis]: Checked inductivity of 35288 backedges. 2 proven. 16653 refuted. 0 times theorem prover too weak. 18633 trivial. 0 not checked. [2021-11-04 16:33:48,836 INFO L328 TraceCheckSpWp]: Computing backward predicates... Killed by 15