./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--misc--phantom.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5f08f0f0 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/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--misc--phantom.ko-main.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-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 64bit --witnessprinter.graph.data.programhash 3d54ec533bcab354bf7ab20b9139a2cc0ce3cf7423a4c806e696ce4b9d5812e9 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5f08f0f [2021-11-05 15:44:51,155 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-05 15:44:51,158 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-05 15:44:51,189 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-05 15:44:51,190 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-05 15:44:51,192 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-05 15:44:51,193 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-05 15:44:51,196 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-05 15:44:51,198 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-05 15:44:51,201 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-05 15:44:51,202 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-05 15:44:51,203 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-05 15:44:51,203 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-05 15:44:51,205 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-05 15:44:51,206 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-05 15:44:51,210 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-05 15:44:51,211 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-05 15:44:51,211 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-05 15:44:51,213 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-05 15:44:51,217 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-05 15:44:51,218 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-05 15:44:51,219 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-05 15:44:51,219 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-05 15:44:51,220 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-05 15:44:51,225 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-05 15:44:51,225 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-05 15:44:51,225 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-05 15:44:51,226 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-05 15:44:51,231 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-05 15:44:51,232 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-05 15:44:51,232 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-05 15:44:51,233 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-05 15:44:51,234 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-05 15:44:51,234 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-05 15:44:51,235 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-05 15:44:51,235 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-05 15:44:51,236 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-05 15:44:51,236 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-05 15:44:51,236 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-05 15:44:51,237 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-05 15:44:51,237 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-05 15:44:51,238 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-05 15:44:51,265 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-05 15:44:51,265 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-05 15:44:51,266 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-05 15:44:51,266 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-05 15:44:51,268 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-05 15:44:51,268 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-05 15:44:51,268 INFO L138 SettingsManager]: * Use SBE=true [2021-11-05 15:44:51,268 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-05 15:44:51,268 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-05 15:44:51,269 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-05 15:44:51,269 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-05 15:44:51,269 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-05 15:44:51,269 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-05 15:44:51,270 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-05 15:44:51,270 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-05 15:44:51,270 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-05 15:44:51,270 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-05 15:44:51,270 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-05 15:44:51,270 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-05 15:44:51,270 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 15:44:51,271 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-05 15:44:51,271 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-05 15:44:51,271 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-05 15:44:51,271 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-05 15:44:51,271 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-05 15:44:51,271 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-05 15:44:51,271 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-05 15:44:51,272 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-05 15:44:51,272 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-05 15:44:51,272 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3d54ec533bcab354bf7ab20b9139a2cc0ce3cf7423a4c806e696ce4b9d5812e9 [2021-11-05 15:44:51,502 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-05 15:44:51,516 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-05 15:44:51,518 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-05 15:44:51,519 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-05 15:44:51,520 INFO L275 PluginConnector]: CDTParser initialized [2021-11-05 15:44:51,521 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--misc--phantom.ko-main.cil.out.i [2021-11-05 15:44:51,562 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9b517fa0/becd4e543ce54188b4c4cac22ec5e041/FLAG51c07e82d [2021-11-05 15:44:52,060 INFO L306 CDTParser]: Found 1 translation units. [2021-11-05 15:44:52,060 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--misc--phantom.ko-main.cil.out.i [2021-11-05 15:44:52,088 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9b517fa0/becd4e543ce54188b4c4cac22ec5e041/FLAG51c07e82d [2021-11-05 15:44:52,593 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9b517fa0/becd4e543ce54188b4c4cac22ec5e041 [2021-11-05 15:44:52,595 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-05 15:44:52,596 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-05 15:44:52,596 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-05 15:44:52,596 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-05 15:44:52,599 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-05 15:44:52,599 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 03:44:52" (1/1) ... [2021-11-05 15:44:52,600 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60424ddb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 03:44:52, skipping insertion in model container [2021-11-05 15:44:52,600 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 03:44:52" (1/1) ... [2021-11-05 15:44:52,604 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-05 15:44:52,659 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-05 15:44:53,222 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/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--misc--phantom.ko-main.cil.out.i[129019,129032] [2021-11-05 15:44:53,290 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 15:44:53,308 INFO L203 MainTranslator]: Completed pre-run [2021-11-05 15:44:53,445 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/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--misc--phantom.ko-main.cil.out.i[129019,129032] [2021-11-05 15:44:53,459 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 15:44:53,499 INFO L208 MainTranslator]: Completed translation [2021-11-05 15:44:53,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 03:44:53 WrapperNode [2021-11-05 15:44:53,500 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-05 15:44:53,502 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-05 15:44:53,502 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-05 15:44:53,502 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-05 15:44:53,507 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 03:44:53" (1/1) ... [2021-11-05 15:44:53,563 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 03:44:53" (1/1) ... [2021-11-05 15:44:53,687 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-05 15:44:53,688 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-05 15:44:53,689 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-05 15:44:53,689 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-05 15:44:53,694 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 03:44:53" (1/1) ... [2021-11-05 15:44:53,694 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 03:44:53" (1/1) ... [2021-11-05 15:44:53,735 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 03:44:53" (1/1) ... [2021-11-05 15:44:53,736 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 03:44:53" (1/1) ... [2021-11-05 15:44:53,823 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 03:44:53" (1/1) ... [2021-11-05 15:44:53,834 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 03:44:53" (1/1) ... [2021-11-05 15:44:53,843 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 03:44:53" (1/1) ... [2021-11-05 15:44:53,856 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-05 15:44:53,857 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-05 15:44:53,857 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-05 15:44:53,857 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-05 15:44:53,858 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 03:44:53" (1/1) ... [2021-11-05 15:44:53,862 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 15:44:53,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 15:44:53,878 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) [2021-11-05 15:44:53,894 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 [2021-11-05 15:44:53,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-05 15:44:53,905 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-05 15:44:53,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-05 15:44:53,906 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-05 15:44:53,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-05 15:44:53,906 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-05 15:44:53,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-05 15:44:53,906 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-05 15:44:53,906 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-05 15:44:53,906 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-05 15:44:53,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-05 15:44:53,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-05 15:44:53,948 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-05 15:44:53,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-05 15:44:53,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-05 15:44:58,456 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-05 15:44:58,457 INFO L299 CfgBuilder]: Removed 735 assume(true) statements. [2021-11-05 15:44:58,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 03:44:58 BoogieIcfgContainer [2021-11-05 15:44:58,458 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-05 15:44:58,459 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-05 15:44:58,460 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-05 15:44:58,461 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-05 15:44:58,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 03:44:52" (1/3) ... [2021-11-05 15:44:58,462 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@475d74e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 03:44:58, skipping insertion in model container [2021-11-05 15:44:58,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 03:44:53" (2/3) ... [2021-11-05 15:44:58,462 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@475d74e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 03:44:58, skipping insertion in model container [2021-11-05 15:44:58,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 03:44:58" (3/3) ... [2021-11-05 15:44:58,463 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--misc--phantom.ko-main.cil.out.i [2021-11-05 15:44:58,466 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-05 15:44:58,467 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2021-11-05 15:44:58,506 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-05 15:44:58,511 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 [2021-11-05 15:44:58,511 INFO L340 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2021-11-05 15:44:58,528 INFO L276 IsEmpty]: Start isEmpty. Operand has 695 states, 680 states have (on average 1.3647058823529412) internal successors, (928), 694 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:44:58,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-05 15:44:58,532 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 15:44:58,532 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 15:44:58,533 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-05 15:44:58,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 15:44:58,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1913994957, now seen corresponding path program 1 times [2021-11-05 15:44:58,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 15:44:58,541 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696222262] [2021-11-05 15:44:58,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 15:44:58,542 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 15:44:58,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 15:44:58,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 15:44:58,910 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 15:44:58,910 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696222262] [2021-11-05 15:44:58,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696222262] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 15:44:58,911 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 15:44:58,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 15:44:58,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142612809] [2021-11-05 15:44:58,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 15:44:58,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 15:44:58,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 15:44:58,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 15:44:58,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 15:44:58,961 INFO L87 Difference]: Start difference. First operand has 695 states, 680 states have (on average 1.3647058823529412) internal successors, (928), 694 states have internal predecessors, (928), 0 states have call successors, (0), 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 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:44:59,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 15:44:59,175 INFO L93 Difference]: Finished difference Result 1567 states and 2101 transitions. [2021-11-05 15:44:59,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 15:44:59,177 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 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 12 [2021-11-05 15:44:59,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 15:44:59,189 INFO L225 Difference]: With dead ends: 1567 [2021-11-05 15:44:59,189 INFO L226 Difference]: Without dead ends: 867 [2021-11-05 15:44:59,193 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.67ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 15:44:59,200 INFO L933 BasicCegarLoop]: 904 mSDtfsCounter, 247 mSDsluCounter, 856 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 83.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 1760 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.94ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 110.80ms IncrementalHoareTripleChecker+Time [2021-11-05 15:44:59,201 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [247 Valid, 1760 Invalid, 30 Unknown, 0 Unchecked, 5.94ms Time], IncrementalHoareTripleChecker [6 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 110.80ms Time] [2021-11-05 15:44:59,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 867 states. [2021-11-05 15:44:59,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 867 to 821. [2021-11-05 15:44:59,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 821 states, 807 states have (on average 1.3407682775712515) internal successors, (1082), 820 states have internal predecessors, (1082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:44:59,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 1082 transitions. [2021-11-05 15:44:59,282 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 1082 transitions. Word has length 12 [2021-11-05 15:44:59,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 15:44:59,282 INFO L470 AbstractCegarLoop]: Abstraction has 821 states and 1082 transitions. [2021-11-05 15:44:59,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:44:59,283 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 1082 transitions. [2021-11-05 15:44:59,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-05 15:44:59,285 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 15:44:59,285 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 15:44:59,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-05 15:44:59,285 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-05 15:44:59,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 15:44:59,286 INFO L85 PathProgramCache]: Analyzing trace with hash 26844020, now seen corresponding path program 1 times [2021-11-05 15:44:59,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 15:44:59,286 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982999021] [2021-11-05 15:44:59,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 15:44:59,287 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 15:44:59,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 15:44:59,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 15:44:59,390 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 15:44:59,390 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982999021] [2021-11-05 15:44:59,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982999021] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 15:44:59,390 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 15:44:59,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 15:44:59,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045791549] [2021-11-05 15:44:59,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 15:44:59,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 15:44:59,392 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 15:44:59,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 15:44:59,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 15:44:59,393 INFO L87 Difference]: Start difference. First operand 821 states and 1082 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:45:00,910 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 15:45:01,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 15:45:01,025 INFO L93 Difference]: Finished difference Result 2388 states and 3159 transitions. [2021-11-05 15:45:01,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 15:45:01,026 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2021-11-05 15:45:01,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 15:45:01,030 INFO L225 Difference]: With dead ends: 2388 [2021-11-05 15:45:01,030 INFO L226 Difference]: Without dead ends: 1570 [2021-11-05 15:45:01,032 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.39ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 15:45:01,033 INFO L933 BasicCegarLoop]: 900 mSDtfsCounter, 865 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1522.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 865 SdHoareTripleChecker+Valid, 1762 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.98ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1600.95ms IncrementalHoareTripleChecker+Time [2021-11-05 15:45:01,033 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [865 Valid, 1762 Invalid, 16 Unknown, 0 Unchecked, 2.98ms Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 1600.95ms Time] [2021-11-05 15:45:01,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1570 states. [2021-11-05 15:45:01,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1570 to 1552. [2021-11-05 15:45:01,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1552 states, 1538 states have (on average 1.3426527958387515) internal successors, (2065), 1551 states have internal predecessors, (2065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:45:01,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1552 states to 1552 states and 2065 transitions. [2021-11-05 15:45:01,060 INFO L78 Accepts]: Start accepts. Automaton has 1552 states and 2065 transitions. Word has length 19 [2021-11-05 15:45:01,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 15:45:01,061 INFO L470 AbstractCegarLoop]: Abstraction has 1552 states and 2065 transitions. [2021-11-05 15:45:01,061 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:45:01,061 INFO L276 IsEmpty]: Start isEmpty. Operand 1552 states and 2065 transitions. [2021-11-05 15:45:01,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-05 15:45:01,062 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 15:45:01,062 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] [2021-11-05 15:45:01,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-05 15:45:01,063 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-05 15:45:01,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 15:45:01,063 INFO L85 PathProgramCache]: Analyzing trace with hash 845521381, now seen corresponding path program 1 times [2021-11-05 15:45:01,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 15:45:01,063 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128528974] [2021-11-05 15:45:01,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 15:45:01,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 15:45:01,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 15:45:01,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 15:45:01,128 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 15:45:01,129 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128528974] [2021-11-05 15:45:01,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128528974] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 15:45:01,130 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 15:45:01,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 15:45:01,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484116670] [2021-11-05 15:45:01,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 15:45:01,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 15:45:01,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 15:45:01,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 15:45:01,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 15:45:01,134 INFO L87 Difference]: Start difference. First operand 1552 states and 2065 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:45:01,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 15:45:01,177 INFO L93 Difference]: Finished difference Result 1582 states and 2093 transitions. [2021-11-05 15:45:01,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 15:45:01,178 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2021-11-05 15:45:01,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 15:45:01,182 INFO L225 Difference]: With dead ends: 1582 [2021-11-05 15:45:01,182 INFO L226 Difference]: Without dead ends: 1567 [2021-11-05 15:45:01,183 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.49ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 15:45:01,185 INFO L933 BasicCegarLoop]: 914 mSDtfsCounter, 896 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 896 SdHoareTripleChecker+Valid, 928 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.83ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.11ms IncrementalHoareTripleChecker+Time [2021-11-05 15:45:01,186 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [896 Valid, 928 Invalid, 6 Unknown, 0 Unchecked, 1.83ms Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 21.11ms Time] [2021-11-05 15:45:01,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1567 states. [2021-11-05 15:45:01,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1567 to 1552. [2021-11-05 15:45:01,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1552 states, 1538 states have (on average 1.3413524057217165) internal successors, (2063), 1551 states have internal predecessors, (2063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:45:01,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1552 states to 1552 states and 2063 transitions. [2021-11-05 15:45:01,242 INFO L78 Accepts]: Start accepts. Automaton has 1552 states and 2063 transitions. Word has length 23 [2021-11-05 15:45:01,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 15:45:01,242 INFO L470 AbstractCegarLoop]: Abstraction has 1552 states and 2063 transitions. [2021-11-05 15:45:01,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:45:01,243 INFO L276 IsEmpty]: Start isEmpty. Operand 1552 states and 2063 transitions. [2021-11-05 15:45:01,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-05 15:45:01,245 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 15:45:01,246 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] [2021-11-05 15:45:01,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-05 15:45:01,246 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-05 15:45:01,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 15:45:01,247 INFO L85 PathProgramCache]: Analyzing trace with hash 845580963, now seen corresponding path program 1 times [2021-11-05 15:45:01,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 15:45:01,247 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696275942] [2021-11-05 15:45:01,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 15:45:01,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 15:45:01,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 15:45:01,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 15:45:01,325 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 15:45:01,325 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696275942] [2021-11-05 15:45:01,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696275942] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 15:45:01,325 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 15:45:01,325 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 15:45:01,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507432330] [2021-11-05 15:45:01,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 15:45:01,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 15:45:01,326 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 15:45:01,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 15:45:01,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 15:45:01,327 INFO L87 Difference]: Start difference. First operand 1552 states and 2063 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:45:02,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 15:45:02,179 INFO L93 Difference]: Finished difference Result 1552 states and 2063 transitions. [2021-11-05 15:45:02,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 15:45:02,179 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2021-11-05 15:45:02,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 15:45:02,183 INFO L225 Difference]: With dead ends: 1552 [2021-11-05 15:45:02,183 INFO L226 Difference]: Without dead ends: 1550 [2021-11-05 15:45:02,184 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.56ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 15:45:02,185 INFO L933 BasicCegarLoop]: 898 mSDtfsCounter, 878 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 760.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 878 SdHoareTripleChecker+Valid, 898 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.76ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 827.00ms IncrementalHoareTripleChecker+Time [2021-11-05 15:45:02,185 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [878 Valid, 898 Invalid, 2 Unknown, 0 Unchecked, 1.76ms Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 827.00ms Time] [2021-11-05 15:45:02,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1550 states. [2021-11-05 15:45:02,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1550 to 1550. [2021-11-05 15:45:02,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1550 states, 1537 states have (on average 1.3409238776837995) internal successors, (2061), 1549 states have internal predecessors, (2061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:45:02,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1550 states to 1550 states and 2061 transitions. [2021-11-05 15:45:02,217 INFO L78 Accepts]: Start accepts. Automaton has 1550 states and 2061 transitions. Word has length 23 [2021-11-05 15:45:02,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 15:45:02,217 INFO L470 AbstractCegarLoop]: Abstraction has 1550 states and 2061 transitions. [2021-11-05 15:45:02,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:45:02,218 INFO L276 IsEmpty]: Start isEmpty. Operand 1550 states and 2061 transitions. [2021-11-05 15:45:02,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-05 15:45:02,218 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 15:45:02,218 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] [2021-11-05 15:45:02,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-05 15:45:02,219 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-05 15:45:02,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 15:45:02,220 INFO L85 PathProgramCache]: Analyzing trace with hash 443206545, now seen corresponding path program 1 times [2021-11-05 15:45:02,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 15:45:02,220 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103781540] [2021-11-05 15:45:02,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 15:45:02,220 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 15:45:02,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 15:45:02,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 15:45:02,281 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 15:45:02,281 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103781540] [2021-11-05 15:45:02,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103781540] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 15:45:02,282 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 15:45:02,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 15:45:02,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176144380] [2021-11-05 15:45:02,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 15:45:02,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 15:45:02,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 15:45:02,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 15:45:02,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 15:45:02,283 INFO L87 Difference]: Start difference. First operand 1550 states and 2061 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:45:04,211 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 15:45:04,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 15:45:04,351 INFO L93 Difference]: Finished difference Result 1550 states and 2061 transitions. [2021-11-05 15:45:04,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 15:45:04,351 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2021-11-05 15:45:04,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 15:45:04,355 INFO L225 Difference]: With dead ends: 1550 [2021-11-05 15:45:04,355 INFO L226 Difference]: Without dead ends: 1548 [2021-11-05 15:45:04,356 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.60ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 15:45:04,357 INFO L933 BasicCegarLoop]: 896 mSDtfsCounter, 875 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1930.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 875 SdHoareTripleChecker+Valid, 896 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.61ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2024.94ms IncrementalHoareTripleChecker+Time [2021-11-05 15:45:04,357 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [875 Valid, 896 Invalid, 2 Unknown, 0 Unchecked, 1.61ms Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 2024.94ms Time] [2021-11-05 15:45:04,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1548 states. [2021-11-05 15:45:04,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1548 to 1548. [2021-11-05 15:45:04,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1548 states, 1536 states have (on average 1.3404947916666667) internal successors, (2059), 1547 states have internal predecessors, (2059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:45:04,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1548 states to 1548 states and 2059 transitions. [2021-11-05 15:45:04,400 INFO L78 Accepts]: Start accepts. Automaton has 1548 states and 2059 transitions. Word has length 24 [2021-11-05 15:45:04,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 15:45:04,400 INFO L470 AbstractCegarLoop]: Abstraction has 1548 states and 2059 transitions. [2021-11-05 15:45:04,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:45:04,401 INFO L276 IsEmpty]: Start isEmpty. Operand 1548 states and 2059 transitions. [2021-11-05 15:45:04,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-05 15:45:04,401 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 15:45:04,402 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] [2021-11-05 15:45:04,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-05 15:45:04,402 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-05 15:45:04,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 15:45:04,403 INFO L85 PathProgramCache]: Analyzing trace with hash 854501485, now seen corresponding path program 1 times [2021-11-05 15:45:04,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 15:45:04,403 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670249405] [2021-11-05 15:45:04,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 15:45:04,403 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 15:45:04,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 15:45:04,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 15:45:04,479 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 15:45:04,479 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670249405] [2021-11-05 15:45:04,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670249405] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 15:45:04,479 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 15:45:04,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 15:45:04,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408858980] [2021-11-05 15:45:04,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 15:45:04,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 15:45:04,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 15:45:04,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 15:45:04,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 15:45:04,481 INFO L87 Difference]: Start difference. First operand 1548 states and 2059 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:45:06,005 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 15:45:06,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 15:45:06,146 INFO L93 Difference]: Finished difference Result 1548 states and 2059 transitions. [2021-11-05 15:45:06,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 15:45:06,146 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 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 25 [2021-11-05 15:45:06,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 15:45:06,150 INFO L225 Difference]: With dead ends: 1548 [2021-11-05 15:45:06,150 INFO L226 Difference]: Without dead ends: 1546 [2021-11-05 15:45:06,151 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.65ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 15:45:06,154 INFO L933 BasicCegarLoop]: 894 mSDtfsCounter, 872 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1524.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 872 SdHoareTripleChecker+Valid, 894 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.41ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1620.22ms IncrementalHoareTripleChecker+Time [2021-11-05 15:45:06,154 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [872 Valid, 894 Invalid, 2 Unknown, 0 Unchecked, 6.41ms Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 1620.22ms Time] [2021-11-05 15:45:06,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1546 states. [2021-11-05 15:45:06,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1546 to 1546. [2021-11-05 15:45:06,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1546 states, 1535 states have (on average 1.3400651465798046) internal successors, (2057), 1545 states have internal predecessors, (2057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:45:06,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1546 states to 1546 states and 2057 transitions. [2021-11-05 15:45:06,194 INFO L78 Accepts]: Start accepts. Automaton has 1546 states and 2057 transitions. Word has length 25 [2021-11-05 15:45:06,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 15:45:06,195 INFO L470 AbstractCegarLoop]: Abstraction has 1546 states and 2057 transitions. [2021-11-05 15:45:06,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:45:06,195 INFO L276 IsEmpty]: Start isEmpty. Operand 1546 states and 2057 transitions. [2021-11-05 15:45:06,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-05 15:45:06,196 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 15:45:06,196 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] [2021-11-05 15:45:06,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-05 15:45:06,196 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-05 15:45:06,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 15:45:06,197 INFO L85 PathProgramCache]: Analyzing trace with hash 719742747, now seen corresponding path program 1 times [2021-11-05 15:45:06,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 15:45:06,197 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818834215] [2021-11-05 15:45:06,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 15:45:06,197 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 15:45:06,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 15:45:06,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 15:45:06,280 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 15:45:06,280 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818834215] [2021-11-05 15:45:06,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818834215] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 15:45:06,280 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 15:45:06,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 15:45:06,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406815756] [2021-11-05 15:45:06,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 15:45:06,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 15:45:06,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 15:45:06,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 15:45:06,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 15:45:06,283 INFO L87 Difference]: Start difference. First operand 1546 states and 2057 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:45:08,139 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 15:45:08,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 15:45:08,339 INFO L93 Difference]: Finished difference Result 4543 states and 6069 transitions. [2021-11-05 15:45:08,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 15:45:08,339 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2021-11-05 15:45:08,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 15:45:08,347 INFO L225 Difference]: With dead ends: 4543 [2021-11-05 15:45:08,347 INFO L226 Difference]: Without dead ends: 3000 [2021-11-05 15:45:08,349 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.55ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 15:45:08,349 INFO L933 BasicCegarLoop]: 915 mSDtfsCounter, 837 mSDsluCounter, 852 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1873.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 837 SdHoareTripleChecker+Valid, 1767 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.62ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1973.82ms IncrementalHoareTripleChecker+Time [2021-11-05 15:45:08,350 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [837 Valid, 1767 Invalid, 27 Unknown, 0 Unchecked, 2.62ms Time], IncrementalHoareTripleChecker [10 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 1973.82ms Time] [2021-11-05 15:45:08,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3000 states. [2021-11-05 15:45:08,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3000 to 2984. [2021-11-05 15:45:08,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2984 states, 2973 states have (on average 1.3427514295324587) internal successors, (3992), 2983 states have internal predecessors, (3992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:45:08,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2984 states to 2984 states and 3992 transitions. [2021-11-05 15:45:08,414 INFO L78 Accepts]: Start accepts. Automaton has 2984 states and 3992 transitions. Word has length 26 [2021-11-05 15:45:08,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 15:45:08,414 INFO L470 AbstractCegarLoop]: Abstraction has 2984 states and 3992 transitions. [2021-11-05 15:45:08,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:45:08,414 INFO L276 IsEmpty]: Start isEmpty. Operand 2984 states and 3992 transitions. [2021-11-05 15:45:08,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-05 15:45:08,415 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 15:45:08,415 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] [2021-11-05 15:45:08,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-05 15:45:08,415 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-05 15:45:08,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 15:45:08,416 INFO L85 PathProgramCache]: Analyzing trace with hash 837189175, now seen corresponding path program 1 times [2021-11-05 15:45:08,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 15:45:08,416 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022701331] [2021-11-05 15:45:08,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 15:45:08,416 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 15:45:08,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 15:45:08,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 15:45:08,469 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 15:45:08,469 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022701331] [2021-11-05 15:45:08,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022701331] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 15:45:08,469 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 15:45:08,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 15:45:08,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978888505] [2021-11-05 15:45:08,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 15:45:08,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 15:45:08,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 15:45:08,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 15:45:08,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 15:45:08,471 INFO L87 Difference]: Start difference. First operand 2984 states and 3992 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:45:09,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 15:45:09,478 INFO L93 Difference]: Finished difference Result 2984 states and 3992 transitions. [2021-11-05 15:45:09,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 15:45:09,479 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2021-11-05 15:45:09,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 15:45:09,486 INFO L225 Difference]: With dead ends: 2984 [2021-11-05 15:45:09,486 INFO L226 Difference]: Without dead ends: 2967 [2021-11-05 15:45:09,487 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.55ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 15:45:09,488 INFO L933 BasicCegarLoop]: 890 mSDtfsCounter, 819 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 885.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 819 SdHoareTripleChecker+Valid, 927 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.54ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 960.47ms IncrementalHoareTripleChecker+Time [2021-11-05 15:45:09,489 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [819 Valid, 927 Invalid, 13 Unknown, 0 Unchecked, 1.54ms Time], IncrementalHoareTripleChecker [4 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 960.47ms Time] [2021-11-05 15:45:09,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2967 states. [2021-11-05 15:45:09,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2967 to 2967. [2021-11-05 15:45:09,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2967 states, 2958 states have (on average 1.341108857336038) internal successors, (3967), 2966 states have internal predecessors, (3967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:45:09,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2967 states to 2967 states and 3967 transitions. [2021-11-05 15:45:09,566 INFO L78 Accepts]: Start accepts. Automaton has 2967 states and 3967 transitions. Word has length 27 [2021-11-05 15:45:09,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 15:45:09,567 INFO L470 AbstractCegarLoop]: Abstraction has 2967 states and 3967 transitions. [2021-11-05 15:45:09,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:45:09,568 INFO L276 IsEmpty]: Start isEmpty. Operand 2967 states and 3967 transitions. [2021-11-05 15:45:09,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-05 15:45:09,570 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 15:45:09,571 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 15:45:09,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-05 15:45:09,571 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-05 15:45:09,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 15:45:09,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1988061701, now seen corresponding path program 1 times [2021-11-05 15:45:09,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 15:45:09,572 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370776945] [2021-11-05 15:45:09,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 15:45:09,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 15:45:09,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 15:45:09,656 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 15:45:09,657 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 15:45:09,657 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370776945] [2021-11-05 15:45:09,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370776945] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 15:45:09,657 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 15:45:09,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 15:45:09,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313642741] [2021-11-05 15:45:09,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 15:45:09,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 15:45:09,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 15:45:09,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 15:45:09,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 15:45:09,660 INFO L87 Difference]: Start difference. First operand 2967 states and 3967 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:45:09,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 15:45:09,794 INFO L93 Difference]: Finished difference Result 7975 states and 10731 transitions. [2021-11-05 15:45:09,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 15:45:09,795 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2021-11-05 15:45:09,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 15:45:09,810 INFO L225 Difference]: With dead ends: 7975 [2021-11-05 15:45:09,810 INFO L226 Difference]: Without dead ends: 5011 [2021-11-05 15:45:09,815 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.07ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 15:45:09,816 INFO L933 BasicCegarLoop]: 1534 mSDtfsCounter, 703 mSDsluCounter, 869 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 703 SdHoareTripleChecker+Valid, 2403 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.60ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.30ms IncrementalHoareTripleChecker+Time [2021-11-05 15:45:09,817 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [703 Valid, 2403 Invalid, 20 Unknown, 0 Unchecked, 2.60ms Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 36.30ms Time] [2021-11-05 15:45:09,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5011 states. [2021-11-05 15:45:09,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5011 to 4973. [2021-11-05 15:45:09,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4973 states, 4964 states have (on average 1.355157131345689) internal successors, (6727), 4972 states have internal predecessors, (6727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:45:09,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4973 states to 4973 states and 6727 transitions. [2021-11-05 15:45:09,950 INFO L78 Accepts]: Start accepts. Automaton has 4973 states and 6727 transitions. Word has length 78 [2021-11-05 15:45:09,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 15:45:09,950 INFO L470 AbstractCegarLoop]: Abstraction has 4973 states and 6727 transitions. [2021-11-05 15:45:09,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:45:09,950 INFO L276 IsEmpty]: Start isEmpty. Operand 4973 states and 6727 transitions. [2021-11-05 15:45:09,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-05 15:45:09,952 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 15:45:09,953 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 15:45:09,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-05 15:45:09,953 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-05 15:45:09,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 15:45:09,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1064888383, now seen corresponding path program 1 times [2021-11-05 15:45:09,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 15:45:09,954 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883966835] [2021-11-05 15:45:09,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 15:45:09,954 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 15:45:10,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 15:45:10,075 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-05 15:45:10,075 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 15:45:10,075 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883966835] [2021-11-05 15:45:10,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883966835] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 15:45:10,076 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 15:45:10,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 15:45:10,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069162324] [2021-11-05 15:45:10,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 15:45:10,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 15:45:10,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 15:45:10,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 15:45:10,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 15:45:10,077 INFO L87 Difference]: Start difference. First operand 4973 states and 6727 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:45:10,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 15:45:10,488 INFO L93 Difference]: Finished difference Result 19387 states and 26275 transitions. [2021-11-05 15:45:10,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 15:45:10,489 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-05 15:45:10,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 15:45:10,534 INFO L225 Difference]: With dead ends: 19387 [2021-11-05 15:45:10,535 INFO L226 Difference]: Without dead ends: 14417 [2021-11-05 15:45:10,543 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.67ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 15:45:10,544 INFO L933 BasicCegarLoop]: 1044 mSDtfsCounter, 2325 mSDsluCounter, 2412 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2325 SdHoareTripleChecker+Valid, 3456 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.96ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.48ms IncrementalHoareTripleChecker+Time [2021-11-05 15:45:10,545 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2325 Valid, 3456 Invalid, 11 Unknown, 0 Unchecked, 4.96ms Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 28.48ms Time] [2021-11-05 15:45:10,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14417 states. [2021-11-05 15:45:10,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14417 to 4981. [2021-11-05 15:45:10,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4981 states, 4972 states have (on average 1.3545856798069187) internal successors, (6735), 4980 states have internal predecessors, (6735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:45:10,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4981 states to 4981 states and 6735 transitions. [2021-11-05 15:45:10,748 INFO L78 Accepts]: Start accepts. Automaton has 4981 states and 6735 transitions. Word has length 96 [2021-11-05 15:45:10,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 15:45:10,748 INFO L470 AbstractCegarLoop]: Abstraction has 4981 states and 6735 transitions. [2021-11-05 15:45:10,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:45:10,749 INFO L276 IsEmpty]: Start isEmpty. Operand 4981 states and 6735 transitions. [2021-11-05 15:45:10,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-05 15:45:10,750 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 15:45:10,750 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 15:45:10,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-05 15:45:10,751 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-05 15:45:10,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 15:45:10,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1487590209, now seen corresponding path program 1 times [2021-11-05 15:45:10,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 15:45:10,752 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436316318] [2021-11-05 15:45:10,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 15:45:10,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 15:45:10,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 15:45:10,887 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-05 15:45:10,887 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 15:45:10,887 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436316318] [2021-11-05 15:45:10,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436316318] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 15:45:10,887 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 15:45:10,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 15:45:10,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575661463] [2021-11-05 15:45:10,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 15:45:10,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 15:45:10,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 15:45:10,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 15:45:10,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 15:45:10,889 INFO L87 Difference]: Start difference. First operand 4981 states and 6735 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:45:12,907 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 15:45:13,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 15:45:13,178 INFO L93 Difference]: Finished difference Result 10795 states and 14679 transitions. [2021-11-05 15:45:13,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 15:45:13,179 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-05 15:45:13,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 15:45:13,189 INFO L225 Difference]: With dead ends: 10795 [2021-11-05 15:45:13,189 INFO L226 Difference]: Without dead ends: 5817 [2021-11-05 15:45:13,196 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.56ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 15:45:13,197 INFO L933 BasicCegarLoop]: 1101 mSDtfsCounter, 316 mSDsluCounter, 763 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 11 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2075.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 1864 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.91ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2159.79ms IncrementalHoareTripleChecker+Time [2021-11-05 15:45:13,197 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [316 Valid, 1864 Invalid, 44 Unknown, 0 Unchecked, 1.91ms Time], IncrementalHoareTripleChecker [11 Valid, 32 Invalid, 1 Unknown, 0 Unchecked, 2159.79ms Time] [2021-11-05 15:45:13,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5817 states. [2021-11-05 15:45:13,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5817 to 5711. [2021-11-05 15:45:13,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5711 states, 5702 states have (on average 1.362504384426517) internal successors, (7769), 5710 states have internal predecessors, (7769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:45:13,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5711 states to 5711 states and 7769 transitions. [2021-11-05 15:45:13,369 INFO L78 Accepts]: Start accepts. Automaton has 5711 states and 7769 transitions. Word has length 96 [2021-11-05 15:45:13,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 15:45:13,369 INFO L470 AbstractCegarLoop]: Abstraction has 5711 states and 7769 transitions. [2021-11-05 15:45:13,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:45:13,369 INFO L276 IsEmpty]: Start isEmpty. Operand 5711 states and 7769 transitions. [2021-11-05 15:45:13,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-05 15:45:13,371 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 15:45:13,371 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 15:45:13,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-05 15:45:13,371 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-05 15:45:13,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 15:45:13,372 INFO L85 PathProgramCache]: Analyzing trace with hash -227700886, now seen corresponding path program 1 times [2021-11-05 15:45:13,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 15:45:13,372 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045070829] [2021-11-05 15:45:13,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 15:45:13,372 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 15:45:13,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 15:45:13,451 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-05 15:45:13,451 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 15:45:13,452 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045070829] [2021-11-05 15:45:13,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045070829] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 15:45:13,452 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 15:45:13,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 15:45:13,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606674914] [2021-11-05 15:45:13,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 15:45:13,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 15:45:13,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 15:45:13,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 15:45:13,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 15:45:13,453 INFO L87 Difference]: Start difference. First operand 5711 states and 7769 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) [2021-11-05 15:45:15,470 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 15:45:15,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 15:45:15,674 INFO L93 Difference]: Finished difference Result 5711 states and 7769 transitions. [2021-11-05 15:45:15,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 15:45:15,674 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 101 [2021-11-05 15:45:15,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 15:45:15,683 INFO L225 Difference]: With dead ends: 5711 [2021-11-05 15:45:15,683 INFO L226 Difference]: Without dead ends: 5705 [2021-11-05 15:45:15,685 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.52ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 15:45:15,685 INFO L933 BasicCegarLoop]: 881 mSDtfsCounter, 27 mSDsluCounter, 840 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2022.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 1721 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.10ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2106.85ms IncrementalHoareTripleChecker+Time [2021-11-05 15:45:15,686 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 1721 Invalid, 11 Unknown, 0 Unchecked, 1.10ms Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 1 Unknown, 0 Unchecked, 2106.85ms Time] [2021-11-05 15:45:15,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5705 states. [2021-11-05 15:45:15,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5705 to 5705. [2021-11-05 15:45:15,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5705 states, 5699 states have (on average 1.3598876995964204) internal successors, (7750), 5704 states have internal predecessors, (7750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:45:15,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5705 states to 5705 states and 7750 transitions. [2021-11-05 15:45:15,849 INFO L78 Accepts]: Start accepts. Automaton has 5705 states and 7750 transitions. Word has length 101 [2021-11-05 15:45:15,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 15:45:15,849 INFO L470 AbstractCegarLoop]: Abstraction has 5705 states and 7750 transitions. [2021-11-05 15:45:15,849 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) [2021-11-05 15:45:15,849 INFO L276 IsEmpty]: Start isEmpty. Operand 5705 states and 7750 transitions. [2021-11-05 15:45:15,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-05 15:45:15,851 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 15:45:15,851 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 15:45:15,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-05 15:45:15,852 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-05 15:45:15,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 15:45:15,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1531760360, now seen corresponding path program 1 times [2021-11-05 15:45:15,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 15:45:15,852 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550286794] [2021-11-05 15:45:15,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 15:45:15,853 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 15:45:15,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 15:45:15,967 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-05 15:45:15,968 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 15:45:15,968 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550286794] [2021-11-05 15:45:15,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550286794] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 15:45:15,968 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 15:45:15,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 15:45:15,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454391390] [2021-11-05 15:45:15,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 15:45:15,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 15:45:15,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 15:45:15,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 15:45:15,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 15:45:15,970 INFO L87 Difference]: Start difference. First operand 5705 states and 7750 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) [2021-11-05 15:45:17,987 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 15:45:18,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 15:45:18,204 INFO L93 Difference]: Finished difference Result 11405 states and 15496 transitions. [2021-11-05 15:45:18,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 15:45:18,204 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 102 [2021-11-05 15:45:18,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 15:45:18,213 INFO L225 Difference]: With dead ends: 11405 [2021-11-05 15:45:18,214 INFO L226 Difference]: Without dead ends: 5703 [2021-11-05 15:45:18,220 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.66ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 15:45:18,221 INFO L933 BasicCegarLoop]: 1173 mSDtfsCounter, 847 mSDsluCounter, 830 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2030.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 847 SdHoareTripleChecker+Valid, 2003 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.92ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2105.53ms IncrementalHoareTripleChecker+Time [2021-11-05 15:45:18,221 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [847 Valid, 2003 Invalid, 20 Unknown, 0 Unchecked, 1.92ms Time], IncrementalHoareTripleChecker [5 Valid, 14 Invalid, 1 Unknown, 0 Unchecked, 2105.53ms Time] [2021-11-05 15:45:18,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5703 states. [2021-11-05 15:45:18,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5703 to 5676. [2021-11-05 15:45:18,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5676 states, 5671 states have (on average 1.3581378945512255) internal successors, (7702), 5675 states have internal predecessors, (7702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:45:18,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5676 states to 5676 states and 7702 transitions. [2021-11-05 15:45:18,375 INFO L78 Accepts]: Start accepts. Automaton has 5676 states and 7702 transitions. Word has length 102 [2021-11-05 15:45:18,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 15:45:18,376 INFO L470 AbstractCegarLoop]: Abstraction has 5676 states and 7702 transitions. [2021-11-05 15:45:18,376 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) [2021-11-05 15:45:18,376 INFO L276 IsEmpty]: Start isEmpty. Operand 5676 states and 7702 transitions. [2021-11-05 15:45:18,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-05 15:45:18,377 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 15:45:18,377 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 15:45:18,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-05 15:45:18,378 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-05 15:45:18,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 15:45:18,378 INFO L85 PathProgramCache]: Analyzing trace with hash -988199574, now seen corresponding path program 1 times [2021-11-05 15:45:18,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 15:45:18,379 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668650429] [2021-11-05 15:45:18,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 15:45:18,379 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 15:45:18,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 15:45:18,517 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-05 15:45:18,518 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 15:45:18,518 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668650429] [2021-11-05 15:45:18,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668650429] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 15:45:18,518 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 15:45:18,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 15:45:18,519 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908593234] [2021-11-05 15:45:18,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 15:45:18,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 15:45:18,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 15:45:18,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 15:45:18,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 15:45:18,520 INFO L87 Difference]: Start difference. First operand 5676 states and 7702 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 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) [2021-11-05 15:45:18,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 15:45:18,756 INFO L93 Difference]: Finished difference Result 8473 states and 11503 transitions. [2021-11-05 15:45:18,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 15:45:18,757 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 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 102 [2021-11-05 15:45:18,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 15:45:18,770 INFO L225 Difference]: With dead ends: 8473 [2021-11-05 15:45:18,770 INFO L226 Difference]: Without dead ends: 8461 [2021-11-05 15:45:18,773 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.84ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-05 15:45:18,773 INFO L933 BasicCegarLoop]: 1676 mSDtfsCounter, 2465 mSDsluCounter, 2630 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2465 SdHoareTripleChecker+Valid, 4306 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.59ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.31ms IncrementalHoareTripleChecker+Time [2021-11-05 15:45:18,773 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2465 Valid, 4306 Invalid, 17 Unknown, 0 Unchecked, 3.59ms Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 16.31ms Time] [2021-11-05 15:45:18,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8461 states. [2021-11-05 15:45:18,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8461 to 5664. [2021-11-05 15:45:18,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5664 states, 5661 states have (on average 1.3577106518282989) internal successors, (7686), 5663 states have internal predecessors, (7686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:45:18,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5664 states to 5664 states and 7686 transitions. [2021-11-05 15:45:18,980 INFO L78 Accepts]: Start accepts. Automaton has 5664 states and 7686 transitions. Word has length 102 [2021-11-05 15:45:18,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 15:45:18,981 INFO L470 AbstractCegarLoop]: Abstraction has 5664 states and 7686 transitions. [2021-11-05 15:45:18,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 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) [2021-11-05 15:45:18,981 INFO L276 IsEmpty]: Start isEmpty. Operand 5664 states and 7686 transitions. [2021-11-05 15:45:18,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-05 15:45:18,985 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 15:45:18,985 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 15:45:18,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-05 15:45:18,985 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-05 15:45:18,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 15:45:18,986 INFO L85 PathProgramCache]: Analyzing trace with hash -961310274, now seen corresponding path program 1 times [2021-11-05 15:45:18,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 15:45:18,986 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218016529] [2021-11-05 15:45:18,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 15:45:18,986 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 15:45:19,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 15:45:19,086 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-05 15:45:19,086 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 15:45:19,086 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218016529] [2021-11-05 15:45:19,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218016529] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 15:45:19,086 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 15:45:19,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 15:45:19,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481171508] [2021-11-05 15:45:19,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 15:45:19,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 15:45:19,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 15:45:19,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 15:45:19,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 15:45:19,088 INFO L87 Difference]: Start difference. First operand 5664 states and 7686 transitions. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 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) [2021-11-05 15:45:21,017 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 15:45:21,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 15:45:21,318 INFO L93 Difference]: Finished difference Result 10573 states and 14258 transitions. [2021-11-05 15:45:21,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 15:45:21,319 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 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 114 [2021-11-05 15:45:21,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 15:45:21,326 INFO L225 Difference]: With dead ends: 10573 [2021-11-05 15:45:21,326 INFO L226 Difference]: Without dead ends: 4912 [2021-11-05 15:45:21,333 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.33ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 15:45:21,334 INFO L933 BasicCegarLoop]: 1207 mSDtfsCounter, 660 mSDsluCounter, 1748 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1940.18ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 660 SdHoareTripleChecker+Valid, 2955 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.69ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2032.08ms IncrementalHoareTripleChecker+Time [2021-11-05 15:45:21,334 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [660 Valid, 2955 Invalid, 16 Unknown, 0 Unchecked, 2.69ms Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 2032.08ms Time] [2021-11-05 15:45:21,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4912 states. [2021-11-05 15:45:21,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4912 to 3856. [2021-11-05 15:45:21,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3856 states, 3854 states have (on average 1.3463933575505969) internal successors, (5189), 3855 states have internal predecessors, (5189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:45:21,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3856 states to 3856 states and 5189 transitions. [2021-11-05 15:45:21,449 INFO L78 Accepts]: Start accepts. Automaton has 3856 states and 5189 transitions. Word has length 114 [2021-11-05 15:45:21,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 15:45:21,450 INFO L470 AbstractCegarLoop]: Abstraction has 3856 states and 5189 transitions. [2021-11-05 15:45:21,450 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 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) [2021-11-05 15:45:21,450 INFO L276 IsEmpty]: Start isEmpty. Operand 3856 states and 5189 transitions. [2021-11-05 15:45:21,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-05 15:45:21,452 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 15:45:21,452 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 15:45:21,453 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-05 15:45:21,453 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-05 15:45:21,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 15:45:21,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1980898253, now seen corresponding path program 1 times [2021-11-05 15:45:21,453 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 15:45:21,453 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475193108] [2021-11-05 15:45:21,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 15:45:21,454 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 15:45:21,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 15:45:21,553 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-05 15:45:21,554 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 15:45:21,554 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475193108] [2021-11-05 15:45:21,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475193108] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 15:45:21,554 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [928879955] [2021-11-05 15:45:21,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 15:45:21,554 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 15:45:21,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 15:45:21,556 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) [2021-11-05 15:45:21,594 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-05 15:45:22,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 15:45:22,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 2101 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-05 15:45:22,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 15:45:22,349 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-05 15:45:22,349 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 15:45:22,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [928879955] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 15:45:22,350 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-05 15:45:22,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2021-11-05 15:45:22,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147349875] [2021-11-05 15:45:22,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 15:45:22,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 15:45:22,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 15:45:22,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 15:45:22,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 15:45:22,351 INFO L87 Difference]: Start difference. First operand 3856 states and 5189 transitions. Second operand has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:45:23,563 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 15:45:23,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 15:45:23,943 INFO L93 Difference]: Finished difference Result 9659 states and 12962 transitions. [2021-11-05 15:45:23,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 15:45:23,944 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 0 states have call successors, (0), 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 [2021-11-05 15:45:23,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 15:45:23,956 INFO L225 Difference]: With dead ends: 9659 [2021-11-05 15:45:23,956 INFO L226 Difference]: Without dead ends: 9645 [2021-11-05 15:45:23,958 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.74ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 15:45:23,958 INFO L933 BasicCegarLoop]: 1115 mSDtfsCounter, 1132 mSDsluCounter, 1724 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1233.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1132 SdHoareTripleChecker+Valid, 2839 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.77ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1320.30ms IncrementalHoareTripleChecker+Time [2021-11-05 15:45:23,958 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1132 Valid, 2839 Invalid, 36 Unknown, 0 Unchecked, 2.77ms Time], IncrementalHoareTripleChecker [8 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 1320.30ms Time] [2021-11-05 15:45:23,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9645 states. [2021-11-05 15:45:24,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9645 to 9429. [2021-11-05 15:45:24,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9429 states, 9427 states have (on average 1.3493157950567518) internal successors, (12720), 9428 states have internal predecessors, (12720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:45:24,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9429 states to 9429 states and 12720 transitions. [2021-11-05 15:45:24,271 INFO L78 Accepts]: Start accepts. Automaton has 9429 states and 12720 transitions. Word has length 124 [2021-11-05 15:45:24,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 15:45:24,271 INFO L470 AbstractCegarLoop]: Abstraction has 9429 states and 12720 transitions. [2021-11-05 15:45:24,271 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:45:24,272 INFO L276 IsEmpty]: Start isEmpty. Operand 9429 states and 12720 transitions. [2021-11-05 15:45:24,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-05 15:45:24,276 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 15:45:24,277 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 15:45:24,297 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-05 15:45:24,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-05 15:45:24,492 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-05 15:45:24,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 15:45:24,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1808665436, now seen corresponding path program 1 times [2021-11-05 15:45:24,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 15:45:24,492 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036698217] [2021-11-05 15:45:24,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 15:45:24,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 15:45:24,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 15:45:24,593 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-05 15:45:24,593 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 15:45:24,594 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036698217] [2021-11-05 15:45:24,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036698217] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 15:45:24,594 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 15:45:24,594 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 15:45:24,594 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39838865] [2021-11-05 15:45:24,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 15:45:24,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 15:45:24,595 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 15:45:24,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 15:45:24,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 15:45:24,595 INFO L87 Difference]: Start difference. First operand 9429 states and 12720 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:45:25,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 15:45:25,223 INFO L93 Difference]: Finished difference Result 28281 states and 38154 transitions. [2021-11-05 15:45:25,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 15:45:25,223 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2021-11-05 15:45:25,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 15:45:25,248 INFO L225 Difference]: With dead ends: 28281 [2021-11-05 15:45:25,248 INFO L226 Difference]: Without dead ends: 18855 [2021-11-05 15:45:25,258 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.51ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 15:45:25,259 INFO L933 BasicCegarLoop]: 1033 mSDtfsCounter, 870 mSDsluCounter, 870 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 870 SdHoareTripleChecker+Valid, 1903 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.11ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.87ms IncrementalHoareTripleChecker+Time [2021-11-05 15:45:25,259 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [870 Valid, 1903 Invalid, 9 Unknown, 0 Unchecked, 2.11ms Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 6.87ms Time] [2021-11-05 15:45:25,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18855 states. [2021-11-05 15:45:25,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18855 to 9457. [2021-11-05 15:45:25,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9457 states, 9455 states have (on average 1.348281332628239) internal successors, (12748), 9456 states have internal predecessors, (12748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:45:25,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9457 states to 9457 states and 12748 transitions. [2021-11-05 15:45:25,645 INFO L78 Accepts]: Start accepts. Automaton has 9457 states and 12748 transitions. Word has length 124 [2021-11-05 15:45:25,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 15:45:25,645 INFO L470 AbstractCegarLoop]: Abstraction has 9457 states and 12748 transitions. [2021-11-05 15:45:25,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:45:25,646 INFO L276 IsEmpty]: Start isEmpty. Operand 9457 states and 12748 transitions. [2021-11-05 15:45:25,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-11-05 15:45:25,651 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 15:45:25,651 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 15:45:25,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-05 15:45:25,652 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-05 15:45:25,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 15:45:25,652 INFO L85 PathProgramCache]: Analyzing trace with hash -695623963, now seen corresponding path program 1 times [2021-11-05 15:45:25,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 15:45:25,652 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576578617] [2021-11-05 15:45:25,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 15:45:25,653 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 15:45:25,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 15:45:25,806 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-05 15:45:25,806 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 15:45:25,807 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576578617] [2021-11-05 15:45:25,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576578617] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 15:45:25,807 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 15:45:25,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-05 15:45:25,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249944689] [2021-11-05 15:45:25,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 15:45:25,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-05 15:45:25,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 15:45:25,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-05 15:45:25,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-05 15:45:25,808 INFO L87 Difference]: Start difference. First operand 9457 states and 12748 transitions. Second operand has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 7 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:45:27,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 15:45:27,867 INFO L93 Difference]: Finished difference Result 58701 states and 79994 transitions. [2021-11-05 15:45:27,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-05 15:45:27,868 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 7 states have internal predecessors, (107), 0 states have call successors, (0), 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 126 [2021-11-05 15:45:27,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 15:45:27,950 INFO L225 Difference]: With dead ends: 58701 [2021-11-05 15:45:27,950 INFO L226 Difference]: Without dead ends: 49247 [2021-11-05 15:45:27,973 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 86.77ms TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-11-05 15:45:27,974 INFO L933 BasicCegarLoop]: 1695 mSDtfsCounter, 11749 mSDsluCounter, 5994 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 101.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11749 SdHoareTripleChecker+Valid, 7689 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.80ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 121.54ms IncrementalHoareTripleChecker+Time [2021-11-05 15:45:27,974 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11749 Valid, 7689 Invalid, 148 Unknown, 0 Unchecked, 13.80ms Time], IncrementalHoareTripleChecker [8 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 121.54ms Time] [2021-11-05 15:45:28,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49247 states. [2021-11-05 15:45:28,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49247 to 9597. [2021-11-05 15:45:28,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9597 states, 9595 states have (on average 1.3431995831162065) internal successors, (12888), 9596 states have internal predecessors, (12888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:45:28,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9597 states to 9597 states and 12888 transitions. [2021-11-05 15:45:28,799 INFO L78 Accepts]: Start accepts. Automaton has 9597 states and 12888 transitions. Word has length 126 [2021-11-05 15:45:28,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 15:45:28,799 INFO L470 AbstractCegarLoop]: Abstraction has 9597 states and 12888 transitions. [2021-11-05 15:45:28,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 7 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:45:28,800 INFO L276 IsEmpty]: Start isEmpty. Operand 9597 states and 12888 transitions. [2021-11-05 15:45:28,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-05 15:45:28,805 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 15:45:28,805 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 15:45:28,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-05 15:45:28,806 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-05 15:45:28,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 15:45:28,806 INFO L85 PathProgramCache]: Analyzing trace with hash 353842358, now seen corresponding path program 1 times [2021-11-05 15:45:28,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 15:45:28,806 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229451381] [2021-11-05 15:45:28,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 15:45:28,807 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 15:45:28,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 15:45:28,924 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-05 15:45:28,924 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 15:45:28,924 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229451381] [2021-11-05 15:45:28,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229451381] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 15:45:28,925 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 15:45:28,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 15:45:28,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797348077] [2021-11-05 15:45:28,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 15:45:28,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 15:45:28,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 15:45:28,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 15:45:28,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 15:45:28,927 INFO L87 Difference]: Start difference. First operand 9597 states and 12888 transitions. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:45:30,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 15:45:30,829 INFO L93 Difference]: Finished difference Result 44061 states and 59720 transitions. [2021-11-05 15:45:30,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 15:45:30,829 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 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 129 [2021-11-05 15:45:30,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 15:45:30,877 INFO L225 Difference]: With dead ends: 44061 [2021-11-05 15:45:30,877 INFO L226 Difference]: Without dead ends: 34467 [2021-11-05 15:45:30,895 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 25.86ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-05 15:45:30,895 INFO L933 BasicCegarLoop]: 1078 mSDtfsCounter, 3081 mSDsluCounter, 4226 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 86.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3081 SdHoareTripleChecker+Valid, 5304 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.15ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 106.48ms IncrementalHoareTripleChecker+Time [2021-11-05 15:45:30,896 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3081 Valid, 5304 Invalid, 116 Unknown, 0 Unchecked, 6.15ms Time], IncrementalHoareTripleChecker [12 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 106.48ms Time] [2021-11-05 15:45:30,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34467 states. [2021-11-05 15:45:31,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34467 to 9681. [2021-11-05 15:45:31,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9681 states, 9679 states have (on average 1.3402210972207873) internal successors, (12972), 9680 states have internal predecessors, (12972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:45:31,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9681 states to 9681 states and 12972 transitions. [2021-11-05 15:45:31,621 INFO L78 Accepts]: Start accepts. Automaton has 9681 states and 12972 transitions. Word has length 129 [2021-11-05 15:45:31,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 15:45:31,621 INFO L470 AbstractCegarLoop]: Abstraction has 9681 states and 12972 transitions. [2021-11-05 15:45:31,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:45:31,622 INFO L276 IsEmpty]: Start isEmpty. Operand 9681 states and 12972 transitions. [2021-11-05 15:45:31,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-05 15:45:31,627 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 15:45:31,627 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 15:45:31,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-05 15:45:31,627 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-05 15:45:31,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 15:45:31,628 INFO L85 PathProgramCache]: Analyzing trace with hash -349718692, now seen corresponding path program 1 times [2021-11-05 15:45:31,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 15:45:31,628 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886182542] [2021-11-05 15:45:31,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 15:45:31,628 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 15:45:31,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 15:45:31,746 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-05 15:45:31,746 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 15:45:31,747 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886182542] [2021-11-05 15:45:31,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886182542] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 15:45:31,747 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 15:45:31,747 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 15:45:31,747 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969175333] [2021-11-05 15:45:31,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 15:45:31,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 15:45:31,748 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 15:45:31,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 15:45:31,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 15:45:31,748 INFO L87 Difference]: Start difference. First operand 9681 states and 12972 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:45:34,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 15:45:34,016 INFO L93 Difference]: Finished difference Result 44145 states and 59776 transitions. [2021-11-05 15:45:34,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 15:45:34,017 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 0 states have call successors, (0), 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 132 [2021-11-05 15:45:34,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 15:45:34,061 INFO L225 Difference]: With dead ends: 44145 [2021-11-05 15:45:34,062 INFO L226 Difference]: Without dead ends: 34467 [2021-11-05 15:45:34,076 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.36ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-05 15:45:34,076 INFO L933 BasicCegarLoop]: 1078 mSDtfsCounter, 3081 mSDsluCounter, 4226 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 74.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3081 SdHoareTripleChecker+Valid, 5304 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.53ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 88.63ms IncrementalHoareTripleChecker+Time [2021-11-05 15:45:34,077 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3081 Valid, 5304 Invalid, 116 Unknown, 0 Unchecked, 6.53ms Time], IncrementalHoareTripleChecker [12 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 88.63ms Time] [2021-11-05 15:45:34,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34467 states. [2021-11-05 15:45:34,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34467 to 9765. [2021-11-05 15:45:34,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9765 states, 9763 states have (on average 1.337293864590802) internal successors, (13056), 9764 states have internal predecessors, (13056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:45:34,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9765 states to 9765 states and 13056 transitions. [2021-11-05 15:45:34,758 INFO L78 Accepts]: Start accepts. Automaton has 9765 states and 13056 transitions. Word has length 132 [2021-11-05 15:45:34,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 15:45:34,758 INFO L470 AbstractCegarLoop]: Abstraction has 9765 states and 13056 transitions. [2021-11-05 15:45:34,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:45:34,758 INFO L276 IsEmpty]: Start isEmpty. Operand 9765 states and 13056 transitions. [2021-11-05 15:45:34,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-11-05 15:45:34,764 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 15:45:34,764 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 15:45:34,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-05 15:45:34,764 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-05 15:45:34,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 15:45:34,764 INFO L85 PathProgramCache]: Analyzing trace with hash 655612877, now seen corresponding path program 1 times [2021-11-05 15:45:34,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 15:45:34,765 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306750392] [2021-11-05 15:45:34,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 15:45:34,765 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 15:45:34,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 15:45:34,873 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-05 15:45:34,873 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 15:45:34,873 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306750392] [2021-11-05 15:45:34,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306750392] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 15:45:34,873 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 15:45:34,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 15:45:34,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733798080] [2021-11-05 15:45:34,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 15:45:34,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 15:45:34,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 15:45:34,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 15:45:34,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 15:45:34,875 INFO L87 Difference]: Start difference. First operand 9765 states and 13056 transitions. Second operand has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:45:36,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 15:45:36,963 INFO L93 Difference]: Finished difference Result 43961 states and 59532 transitions. [2021-11-05 15:45:36,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 15:45:36,964 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 0 states have call successors, (0), 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 135 [2021-11-05 15:45:36,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 15:45:37,016 INFO L225 Difference]: With dead ends: 43961 [2021-11-05 15:45:37,016 INFO L226 Difference]: Without dead ends: 34199 [2021-11-05 15:45:37,037 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.27ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-05 15:45:37,038 INFO L933 BasicCegarLoop]: 2333 mSDtfsCounter, 2399 mSDsluCounter, 5482 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 70.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2399 SdHoareTripleChecker+Valid, 7815 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.08ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 84.37ms IncrementalHoareTripleChecker+Time [2021-11-05 15:45:37,038 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2399 Valid, 7815 Invalid, 116 Unknown, 0 Unchecked, 7.08ms Time], IncrementalHoareTripleChecker [12 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 84.37ms Time] [2021-11-05 15:45:37,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34199 states. [2021-11-05 15:45:37,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34199 to 9849. [2021-11-05 15:45:37,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9849 states, 9847 states have (on average 1.3344165735757083) internal successors, (13140), 9848 states have internal predecessors, (13140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:45:37,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9849 states to 9849 states and 13140 transitions. [2021-11-05 15:45:37,877 INFO L78 Accepts]: Start accepts. Automaton has 9849 states and 13140 transitions. Word has length 135 [2021-11-05 15:45:37,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 15:45:37,878 INFO L470 AbstractCegarLoop]: Abstraction has 9849 states and 13140 transitions. [2021-11-05 15:45:37,878 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:45:37,878 INFO L276 IsEmpty]: Start isEmpty. Operand 9849 states and 13140 transitions. [2021-11-05 15:45:37,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-05 15:45:37,883 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 15:45:37,883 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 15:45:37,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-05 15:45:37,884 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-05 15:45:37,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 15:45:37,884 INFO L85 PathProgramCache]: Analyzing trace with hash 560007699, now seen corresponding path program 1 times [2021-11-05 15:45:37,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 15:45:37,884 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925320545] [2021-11-05 15:45:37,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 15:45:37,885 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 15:45:37,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 15:45:38,066 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-05 15:45:38,067 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 15:45:38,067 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925320545] [2021-11-05 15:45:38,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925320545] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 15:45:38,067 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 15:45:38,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-05 15:45:38,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218636198] [2021-11-05 15:45:38,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 15:45:38,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-05 15:45:38,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 15:45:38,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-05 15:45:38,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-05 15:45:38,069 INFO L87 Difference]: Start difference. First operand 9849 states and 13140 transitions. Second operand has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:45:44,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 15:45:44,792 INFO L93 Difference]: Finished difference Result 87797 states and 118977 transitions. [2021-11-05 15:45:44,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-05 15:45:44,793 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 states have internal predecessors, (118), 0 states have call successors, (0), 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 138 [2021-11-05 15:45:44,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 15:45:44,915 INFO L225 Difference]: With dead ends: 87797 [2021-11-05 15:45:44,915 INFO L226 Difference]: Without dead ends: 77951 [2021-11-05 15:45:44,944 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 160.28ms TimeCoverageRelationStatistics Valid=119, Invalid=301, Unknown=0, NotChecked=0, Total=420 [2021-11-05 15:45:44,945 INFO L933 BasicCegarLoop]: 2761 mSDtfsCounter, 6687 mSDsluCounter, 11723 mSDsCounter, 0 mSdLazyCounter, 551 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1192.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6687 SdHoareTripleChecker+Valid, 14484 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.41ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1320.68ms IncrementalHoareTripleChecker+Time [2021-11-05 15:45:44,945 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6687 Valid, 14484 Invalid, 568 Unknown, 0 Unchecked, 17.41ms Time], IncrementalHoareTripleChecker [17 Valid, 551 Invalid, 0 Unknown, 0 Unchecked, 1320.68ms Time] [2021-11-05 15:45:45,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77951 states. [2021-11-05 15:45:46,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77951 to 9989. [2021-11-05 15:45:46,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9989 states, 9987 states have (on average 1.3297286472414138) internal successors, (13280), 9988 states have internal predecessors, (13280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:45:46,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9989 states to 9989 states and 13280 transitions. [2021-11-05 15:45:46,133 INFO L78 Accepts]: Start accepts. Automaton has 9989 states and 13280 transitions. Word has length 138 [2021-11-05 15:45:46,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 15:45:46,133 INFO L470 AbstractCegarLoop]: Abstraction has 9989 states and 13280 transitions. [2021-11-05 15:45:46,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:45:46,134 INFO L276 IsEmpty]: Start isEmpty. Operand 9989 states and 13280 transitions. [2021-11-05 15:45:46,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-05 15:45:46,138 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 15:45:46,139 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 15:45:46,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-05 15:45:46,139 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-05 15:45:46,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 15:45:46,139 INFO L85 PathProgramCache]: Analyzing trace with hash 548795450, now seen corresponding path program 1 times [2021-11-05 15:45:46,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 15:45:46,140 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980769465] [2021-11-05 15:45:46,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 15:45:46,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 15:45:46,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 15:45:46,394 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-05 15:45:46,395 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 15:45:46,395 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980769465] [2021-11-05 15:45:46,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980769465] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 15:45:46,395 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 15:45:46,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 15:45:46,396 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359785167] [2021-11-05 15:45:46,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 15:45:46,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 15:45:46,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 15:45:46,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 15:45:46,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 15:45:46,397 INFO L87 Difference]: Start difference. First operand 9989 states and 13280 transitions. Second operand has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:45:47,936 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 15:45:48,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 15:45:48,547 INFO L93 Difference]: Finished difference Result 15553 states and 20661 transitions. [2021-11-05 15:45:48,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 15:45:48,547 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2021-11-05 15:45:48,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 15:45:48,553 INFO L225 Difference]: With dead ends: 15553 [2021-11-05 15:45:48,553 INFO L226 Difference]: Without dead ends: 5423 [2021-11-05 15:45:48,561 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.45ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-05 15:45:48,561 INFO L933 BasicCegarLoop]: 877 mSDtfsCounter, 33 mSDsluCounter, 2609 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1553.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 3486 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.99ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1631.02ms IncrementalHoareTripleChecker+Time [2021-11-05 15:45:48,561 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 3486 Invalid, 29 Unknown, 0 Unchecked, 1.99ms Time], IncrementalHoareTripleChecker [5 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 1631.02ms Time] [2021-11-05 15:45:48,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5423 states. [2021-11-05 15:45:48,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5423 to 4975. [2021-11-05 15:45:48,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4975 states, 4973 states have (on average 1.3323949326362357) internal successors, (6626), 4974 states have internal predecessors, (6626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:45:48,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4975 states to 4975 states and 6626 transitions. [2021-11-05 15:45:48,984 INFO L78 Accepts]: Start accepts. Automaton has 4975 states and 6626 transitions. Word has length 140 [2021-11-05 15:45:48,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 15:45:48,984 INFO L470 AbstractCegarLoop]: Abstraction has 4975 states and 6626 transitions. [2021-11-05 15:45:48,984 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:45:48,984 INFO L276 IsEmpty]: Start isEmpty. Operand 4975 states and 6626 transitions. [2021-11-05 15:45:48,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-11-05 15:45:48,987 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 15:45:48,987 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 15:45:48,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-05 15:45:48,988 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-05 15:45:48,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 15:45:48,988 INFO L85 PathProgramCache]: Analyzing trace with hash -63759908, now seen corresponding path program 1 times [2021-11-05 15:45:48,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 15:45:48,988 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003869368] [2021-11-05 15:45:48,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 15:45:48,988 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 15:45:49,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 15:45:49,214 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-05 15:45:49,214 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 15:45:49,214 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003869368] [2021-11-05 15:45:49,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003869368] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 15:45:49,214 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 15:45:49,214 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-05 15:45:49,214 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139902818] [2021-11-05 15:45:49,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 15:45:49,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-05 15:45:49,215 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 15:45:49,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-05 15:45:49,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-11-05 15:45:49,215 INFO L87 Difference]: Start difference. First operand 4975 states and 6626 transitions. Second operand has 12 states, 12 states have (on average 10.083333333333334) internal successors, (121), 12 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:45:51,232 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 15:45:52,340 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 15:45:54,006 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 15:45:56,086 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 15:46:00,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 15:46:00,253 INFO L93 Difference]: Finished difference Result 27350 states and 37132 transitions. [2021-11-05 15:46:00,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-11-05 15:46:00,254 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 10.083333333333334) internal successors, (121), 12 states have internal predecessors, (121), 0 states have call successors, (0), 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 141 [2021-11-05 15:46:00,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 15:46:00,280 INFO L225 Difference]: With dead ends: 27350 [2021-11-05 15:46:00,280 INFO L226 Difference]: Without dead ends: 22368 [2021-11-05 15:46:00,290 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 717 ImplicationChecksByTransitivity, 978.42ms TimeCoverageRelationStatistics Valid=738, Invalid=1914, Unknown=0, NotChecked=0, Total=2652 [2021-11-05 15:46:00,290 INFO L933 BasicCegarLoop]: 1654 mSDtfsCounter, 9043 mSDsluCounter, 10671 mSDsCounter, 0 mSdLazyCounter, 685 mSolverCounterSat, 53 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7507.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9043 SdHoareTripleChecker+Valid, 12325 SdHoareTripleChecker+Invalid, 740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.74ms SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 685 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7941.90ms IncrementalHoareTripleChecker+Time [2021-11-05 15:46:00,291 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9043 Valid, 12325 Invalid, 740 Unknown, 0 Unchecked, 17.74ms Time], IncrementalHoareTripleChecker [53 Valid, 685 Invalid, 2 Unknown, 0 Unchecked, 7941.90ms Time] [2021-11-05 15:46:00,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22368 states. [2021-11-05 15:46:00,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22368 to 4908. [2021-11-05 15:46:00,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4908 states, 4906 states have (on average 1.3353037097431717) internal successors, (6551), 4907 states have internal predecessors, (6551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:46:00,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4908 states to 4908 states and 6551 transitions. [2021-11-05 15:46:00,872 INFO L78 Accepts]: Start accepts. Automaton has 4908 states and 6551 transitions. Word has length 141 [2021-11-05 15:46:00,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 15:46:00,872 INFO L470 AbstractCegarLoop]: Abstraction has 4908 states and 6551 transitions. [2021-11-05 15:46:00,873 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.083333333333334) internal successors, (121), 12 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:46:00,873 INFO L276 IsEmpty]: Start isEmpty. Operand 4908 states and 6551 transitions. [2021-11-05 15:46:00,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-11-05 15:46:00,875 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 15:46:00,875 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 15:46:00,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-05 15:46:00,876 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-05 15:46:00,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 15:46:00,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1759754653, now seen corresponding path program 1 times [2021-11-05 15:46:00,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 15:46:00,876 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224033200] [2021-11-05 15:46:00,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 15:46:00,877 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 15:46:01,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 15:46:01,082 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-05 15:46:01,082 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 15:46:01,082 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224033200] [2021-11-05 15:46:01,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224033200] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 15:46:01,083 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 15:46:01,083 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 15:46:01,083 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007813146] [2021-11-05 15:46:01,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 15:46:01,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 15:46:01,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 15:46:01,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 15:46:01,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 15:46:01,085 INFO L87 Difference]: Start difference. First operand 4908 states and 6551 transitions. Second operand has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:46:01,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 15:46:01,611 INFO L93 Difference]: Finished difference Result 6245 states and 8326 transitions. [2021-11-05 15:46:01,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 15:46:01,612 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 0 states have call successors, (0), 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 142 [2021-11-05 15:46:01,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 15:46:01,612 INFO L225 Difference]: With dead ends: 6245 [2021-11-05 15:46:01,612 INFO L226 Difference]: Without dead ends: 0 [2021-11-05 15:46:01,616 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.20ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-05 15:46:01,616 INFO L933 BasicCegarLoop]: 1132 mSDtfsCounter, 2492 mSDsluCounter, 902 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2492 SdHoareTripleChecker+Valid, 2034 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.28ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.26ms IncrementalHoareTripleChecker+Time [2021-11-05 15:46:01,617 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2492 Valid, 2034 Invalid, 16 Unknown, 0 Unchecked, 2.28ms Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 15.26ms Time] [2021-11-05 15:46:01,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-05 15:46:01,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-05 15:46:01,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:46:01,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-05 15:46:01,617 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 142 [2021-11-05 15:46:01,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 15:46:01,618 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-05 15:46:01,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 15:46:01,618 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-05 15:46:01,618 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-05 15:46:01,620 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (13 of 14 remaining) [2021-11-05 15:46:01,620 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (12 of 14 remaining) [2021-11-05 15:46:01,620 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (11 of 14 remaining) [2021-11-05 15:46:01,620 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (10 of 14 remaining) [2021-11-05 15:46:01,621 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (9 of 14 remaining) [2021-11-05 15:46:01,621 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (8 of 14 remaining) [2021-11-05 15:46:01,621 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION (7 of 14 remaining) [2021-11-05 15:46:01,621 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION (6 of 14 remaining) [2021-11-05 15:46:01,621 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (5 of 14 remaining) [2021-11-05 15:46:01,621 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION (4 of 14 remaining) [2021-11-05 15:46:01,621 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION (3 of 14 remaining) [2021-11-05 15:46:01,622 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION (2 of 14 remaining) [2021-11-05 15:46:01,622 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION (1 of 14 remaining) [2021-11-05 15:46:01,622 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION (0 of 14 remaining) [2021-11-05 15:46:01,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-05 15:46:01,623 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-05 15:47:13,979 WARN L230 SmtUtils]: Spent 1.21m on a formula simplification that was a NOOP. DAG size: 243 [2021-11-05 15:48:37,399 WARN L230 SmtUtils]: Spent 1.39m on a formula simplification that was a NOOP. DAG size: 316 [2021-11-05 15:55:20,916 WARN L230 SmtUtils]: Spent 6.73m on a formula simplification that was a NOOP. DAG size: 193 [2021-11-05 15:56:32,153 WARN L230 SmtUtils]: Spent 1.19m on a formula simplification that was a NOOP. DAG size: 243 [2021-11-05 15:57:43,674 WARN L230 SmtUtils]: Spent 1.19m on a formula simplification that was a NOOP. DAG size: 243 [2021-11-05 15:58:55,269 WARN L230 SmtUtils]: Spent 1.19m on a formula simplification that was a NOOP. DAG size: 243 Killed by 15