./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-42f9f8d-1-111_1a-sound--oss--opl3.ko-entry_point_ldv-val-v0.8.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5b36d44f Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-42f9f8d-1-111_1a-sound--oss--opl3.ko-entry_point_ldv-val-v0.8.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 d7bcbc7066f71bf6da4f6dede38e3e78b7607c55d003b39ab5a687b04791c2e1 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 13:58:30,085 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 13:58:30,088 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 13:58:30,146 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 13:58:30,146 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 13:58:30,149 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 13:58:30,150 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 13:58:30,154 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 13:58:30,155 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 13:58:30,159 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 13:58:30,160 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 13:58:30,161 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 13:58:30,162 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 13:58:30,164 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 13:58:30,166 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 13:58:30,168 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 13:58:30,169 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 13:58:30,169 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 13:58:30,173 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 13:58:30,175 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 13:58:30,177 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 13:58:30,177 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 13:58:30,178 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 13:58:30,179 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 13:58:30,184 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 13:58:30,185 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 13:58:30,185 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 13:58:30,186 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 13:58:30,186 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 13:58:30,187 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 13:58:30,187 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 13:58:30,188 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 13:58:30,189 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 13:58:30,190 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 13:58:30,190 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 13:58:30,191 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 13:58:30,191 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 13:58:30,191 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 13:58:30,191 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 13:58:30,192 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 13:58:30,192 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 13:58:30,193 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 13:58:30,207 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 13:58:30,208 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 13:58:30,208 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 13:58:30,208 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 13:58:30,209 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 13:58:30,209 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 13:58:30,209 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 13:58:30,209 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 13:58:30,209 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 13:58:30,210 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 13:58:30,210 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 13:58:30,210 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 13:58:30,210 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 13:58:30,210 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 13:58:30,210 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 13:58:30,211 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 13:58:30,211 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 13:58:30,211 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 13:58:30,211 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 13:58:30,211 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 13:58:30,211 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 13:58:30,211 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 13:58:30,212 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 13:58:30,212 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 13:58:30,212 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 13:58:30,212 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 13:58:30,212 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 13:58:30,212 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 13:58:30,212 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 13:58:30,213 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d7bcbc7066f71bf6da4f6dede38e3e78b7607c55d003b39ab5a687b04791c2e1 [2021-11-07 13:58:30,361 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 13:58:30,375 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 13:58:30,377 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 13:58:30,378 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 13:58:30,380 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 13:58:30,381 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-42f9f8d-1-111_1a-sound--oss--opl3.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-07 13:58:30,430 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae30e67f2/023c9cb0006b4df998f788fe4ebbb8e1/FLAG50ab11064 [2021-11-07 13:58:31,003 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 13:58:31,004 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-42f9f8d-1-111_1a-sound--oss--opl3.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-07 13:58:31,033 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae30e67f2/023c9cb0006b4df998f788fe4ebbb8e1/FLAG50ab11064 [2021-11-07 13:58:31,463 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae30e67f2/023c9cb0006b4df998f788fe4ebbb8e1 [2021-11-07 13:58:31,465 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 13:58:31,467 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 13:58:31,469 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 13:58:31,469 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 13:58:31,471 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 13:58:31,471 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:58:31" (1/1) ... [2021-11-07 13:58:31,472 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44f940f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:58:31, skipping insertion in model container [2021-11-07 13:58:31,472 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:58:31" (1/1) ... [2021-11-07 13:58:31,477 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 13:58:31,548 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 13:58:32,088 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-validator-v0.8/linux-stable-42f9f8d-1-111_1a-sound--oss--opl3.ko-entry_point_ldv-val-v0.8.cil.out.i[209427,209440] [2021-11-07 13:58:32,096 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 13:58:32,188 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 13:58:32,372 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-validator-v0.8/linux-stable-42f9f8d-1-111_1a-sound--oss--opl3.ko-entry_point_ldv-val-v0.8.cil.out.i[209427,209440] [2021-11-07 13:58:32,378 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 13:58:32,436 INFO L208 MainTranslator]: Completed translation [2021-11-07 13:58:32,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:58:32 WrapperNode [2021-11-07 13:58:32,436 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 13:58:32,438 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 13:58:32,464 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 13:58:32,464 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 13:58:32,469 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:58:32" (1/1) ... [2021-11-07 13:58:32,513 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:58:32" (1/1) ... [2021-11-07 13:58:32,814 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 13:58:32,815 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 13:58:32,815 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 13:58:32,815 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 13:58:32,821 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:58:32" (1/1) ... [2021-11-07 13:58:32,821 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:58:32" (1/1) ... [2021-11-07 13:58:32,897 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:58:32" (1/1) ... [2021-11-07 13:58:32,897 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:58:32" (1/1) ... [2021-11-07 13:58:33,062 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:58:32" (1/1) ... [2021-11-07 13:58:33,106 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:58:32" (1/1) ... [2021-11-07 13:58:33,130 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:58:32" (1/1) ... [2021-11-07 13:58:33,288 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 13:58:33,289 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 13:58:33,289 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 13:58:33,289 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 13:58:33,290 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:58:32" (1/1) ... [2021-11-07 13:58:33,294 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 13:58:33,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 13:58:33,353 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 13:58:33,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 13:58:33,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-07 13:58:33,464 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 13:58:33,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 13:58:33,465 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 13:58:33,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 13:58:33,465 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 13:58:33,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 13:58:33,465 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 13:58:33,466 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 13:58:33,466 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 13:58:33,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 13:58:33,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 13:58:33,466 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-07 13:58:33,466 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 13:58:33,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 13:58:40,479 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 13:58:40,480 INFO L299 CfgBuilder]: Removed 2531 assume(true) statements. [2021-11-07 13:58:40,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:58:40 BoogieIcfgContainer [2021-11-07 13:58:40,483 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 13:58:40,484 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 13:58:40,484 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 13:58:40,487 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 13:58:40,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:58:31" (1/3) ... [2021-11-07 13:58:40,487 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52c04966 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:58:40, skipping insertion in model container [2021-11-07 13:58:40,488 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:58:32" (2/3) ... [2021-11-07 13:58:40,488 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52c04966 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:58:40, skipping insertion in model container [2021-11-07 13:58:40,488 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:58:40" (3/3) ... [2021-11-07 13:58:40,489 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-stable-42f9f8d-1-111_1a-sound--oss--opl3.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-07 13:58:40,492 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 13:58:40,492 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-11-07 13:58:40,534 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 13:58:40,540 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 13:58:40,540 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-11-07 13:58:40,585 INFO L276 IsEmpty]: Start isEmpty. Operand has 2867 states, 2856 states have (on average 1.4334733893557423) internal successors, (4094), 2866 states have internal predecessors, (4094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:58:40,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-11-07 13:58:40,596 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:58:40,597 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 13:58:40,597 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 13:58:40,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:58:40,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1906996444, now seen corresponding path program 1 times [2021-11-07 13:58:40,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:58:40,608 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681614602] [2021-11-07 13:58:40,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:58:40,609 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:58:40,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:58:41,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 13:58:41,243 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:58:41,243 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681614602] [2021-11-07 13:58:41,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681614602] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:58:41,244 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:58:41,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 13:58:41,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827863404] [2021-11-07 13:58:41,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:58:41,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 13:58:41,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:58:41,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 13:58:41,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 13:58:41,285 INFO L87 Difference]: Start difference. First operand has 2867 states, 2856 states have (on average 1.4334733893557423) internal successors, (4094), 2866 states have internal predecessors, (4094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 74.0) internal successors, (148), 2 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:58:41,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:58:41,366 INFO L93 Difference]: Finished difference Result 5730 states and 8183 transitions. [2021-11-07 13:58:41,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 13:58:41,368 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 74.0) internal successors, (148), 2 states have internal predecessors, (148), 0 states have call successors, (0), 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 148 [2021-11-07 13:58:41,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:58:41,384 INFO L225 Difference]: With dead ends: 5730 [2021-11-07 13:58:41,385 INFO L226 Difference]: Without dead ends: 2852 [2021-11-07 13:58:41,392 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 13:58:41,394 INFO L933 BasicCegarLoop]: 4069 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4069 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.19ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-07 13:58:41,395 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 4069 Invalid, 0 Unknown, 0 Unchecked, 6.19ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-07 13:58:41,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2852 states. [2021-11-07 13:58:41,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2852 to 2852. [2021-11-07 13:58:41,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2852 states, 2842 states have (on average 1.423997185080929) internal successors, (4047), 2851 states have internal predecessors, (4047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:58:41,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2852 states to 2852 states and 4047 transitions. [2021-11-07 13:58:41,475 INFO L78 Accepts]: Start accepts. Automaton has 2852 states and 4047 transitions. Word has length 148 [2021-11-07 13:58:41,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:58:41,476 INFO L470 AbstractCegarLoop]: Abstraction has 2852 states and 4047 transitions. [2021-11-07 13:58:41,476 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 74.0) internal successors, (148), 2 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:58:41,476 INFO L276 IsEmpty]: Start isEmpty. Operand 2852 states and 4047 transitions. [2021-11-07 13:58:41,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-11-07 13:58:41,478 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:58:41,478 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 13:58:41,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 13:58:41,478 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 13:58:41,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:58:41,479 INFO L85 PathProgramCache]: Analyzing trace with hash 267116844, now seen corresponding path program 1 times [2021-11-07 13:58:41,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:58:41,479 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020466783] [2021-11-07 13:58:41,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:58:41,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:58:41,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:58:41,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 13:58:41,806 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:58:41,806 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020466783] [2021-11-07 13:58:41,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020466783] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:58:41,806 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:58:41,806 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 13:58:41,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531165608] [2021-11-07 13:58:41,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:58:41,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 13:58:41,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:58:41,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 13:58:41,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:58:41,809 INFO L87 Difference]: Start difference. First operand 2852 states and 4047 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:58:42,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:58:42,125 INFO L93 Difference]: Finished difference Result 5784 states and 8213 transitions. [2021-11-07 13:58:42,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 13:58:42,125 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 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 148 [2021-11-07 13:58:42,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:58:42,136 INFO L225 Difference]: With dead ends: 5784 [2021-11-07 13:58:42,136 INFO L226 Difference]: Without dead ends: 3068 [2021-11-07 13:58:42,141 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.22ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:58:42,142 INFO L933 BasicCegarLoop]: 4046 mSDtfsCounter, 463 mSDsluCounter, 3779 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 185.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 7825 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.32ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 232.96ms IncrementalHoareTripleChecker+Time [2021-11-07 13:58:42,143 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [463 Valid, 7825 Invalid, 95 Unknown, 0 Unchecked, 9.32ms Time], IncrementalHoareTripleChecker [2 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 232.96ms Time] [2021-11-07 13:58:42,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3068 states. [2021-11-07 13:58:42,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3068 to 3068. [2021-11-07 13:58:42,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3068 states, 3058 states have (on average 1.4192282537606278) internal successors, (4340), 3067 states have internal predecessors, (4340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:58:42,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3068 states to 3068 states and 4340 transitions. [2021-11-07 13:58:42,294 INFO L78 Accepts]: Start accepts. Automaton has 3068 states and 4340 transitions. Word has length 148 [2021-11-07 13:58:42,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:58:42,296 INFO L470 AbstractCegarLoop]: Abstraction has 3068 states and 4340 transitions. [2021-11-07 13:58:42,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:58:42,297 INFO L276 IsEmpty]: Start isEmpty. Operand 3068 states and 4340 transitions. [2021-11-07 13:58:42,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-11-07 13:58:42,302 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:58:42,302 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 13:58:42,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 13:58:42,303 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 13:58:42,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:58:42,304 INFO L85 PathProgramCache]: Analyzing trace with hash -416763270, now seen corresponding path program 1 times [2021-11-07 13:58:42,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:58:42,304 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050985177] [2021-11-07 13:58:42,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:58:42,309 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:58:42,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:58:42,675 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 13:58:42,675 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:58:42,675 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050985177] [2021-11-07 13:58:42,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050985177] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:58:42,676 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:58:42,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 13:58:42,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996702085] [2021-11-07 13:58:42,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:58:42,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 13:58:42,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:58:42,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 13:58:42,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:58:42,678 INFO L87 Difference]: Start difference. First operand 3068 states and 4340 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 2 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:58:42,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:58:42,764 INFO L93 Difference]: Finished difference Result 6000 states and 8505 transitions. [2021-11-07 13:58:42,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 13:58:42,764 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 2 states have internal predecessors, (160), 0 states have call successors, (0), 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 160 [2021-11-07 13:58:42,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:58:42,774 INFO L225 Difference]: With dead ends: 6000 [2021-11-07 13:58:42,774 INFO L226 Difference]: Without dead ends: 3068 [2021-11-07 13:58:42,779 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.66ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:58:42,780 INFO L933 BasicCegarLoop]: 4044 mSDtfsCounter, 3903 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3903 SdHoareTripleChecker+Valid, 4044 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.26ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.96ms IncrementalHoareTripleChecker+Time [2021-11-07 13:58:42,780 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3903 Valid, 4044 Invalid, 2 Unknown, 0 Unchecked, 7.26ms Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 1.96ms Time] [2021-11-07 13:58:42,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3068 states. [2021-11-07 13:58:42,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3068 to 3068. [2021-11-07 13:58:42,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3068 states, 3058 states have (on average 1.4185742315238719) internal successors, (4338), 3067 states have internal predecessors, (4338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:58:42,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3068 states to 3068 states and 4338 transitions. [2021-11-07 13:58:42,857 INFO L78 Accepts]: Start accepts. Automaton has 3068 states and 4338 transitions. Word has length 160 [2021-11-07 13:58:42,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:58:42,858 INFO L470 AbstractCegarLoop]: Abstraction has 3068 states and 4338 transitions. [2021-11-07 13:58:42,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 2 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:58:42,859 INFO L276 IsEmpty]: Start isEmpty. Operand 3068 states and 4338 transitions. [2021-11-07 13:58:42,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-11-07 13:58:42,860 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:58:42,860 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 13:58:42,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 13:58:42,861 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 13:58:42,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:58:42,861 INFO L85 PathProgramCache]: Analyzing trace with hash 15644118, now seen corresponding path program 1 times [2021-11-07 13:58:42,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:58:42,862 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192548579] [2021-11-07 13:58:42,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:58:42,862 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:58:43,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:58:43,169 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 13:58:43,169 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:58:43,170 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192548579] [2021-11-07 13:58:43,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192548579] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:58:43,170 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:58:43,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 13:58:43,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021025670] [2021-11-07 13:58:43,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:58:43,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 13:58:43,171 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:58:43,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 13:58:43,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 13:58:43,172 INFO L87 Difference]: Start difference. First operand 3068 states and 4338 transitions. Second operand has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:58:43,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:58:43,396 INFO L93 Difference]: Finished difference Result 6006 states and 8509 transitions. [2021-11-07 13:58:43,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 13:58:43,397 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 162 [2021-11-07 13:58:43,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:58:43,408 INFO L225 Difference]: With dead ends: 6006 [2021-11-07 13:58:43,408 INFO L226 Difference]: Without dead ends: 3068 [2021-11-07 13:58:43,413 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.48ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 13:58:43,416 INFO L933 BasicCegarLoop]: 4044 mSDtfsCounter, 3 mSDsluCounter, 8083 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 127.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 12127 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.59ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 141.83ms IncrementalHoareTripleChecker+Time [2021-11-07 13:58:43,417 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 12127 Invalid, 11 Unknown, 0 Unchecked, 8.59ms Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 141.83ms Time] [2021-11-07 13:58:43,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3068 states. [2021-11-07 13:58:43,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3068 to 3068. [2021-11-07 13:58:43,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3068 states, 3058 states have (on average 1.4179202092871157) internal successors, (4336), 3067 states have internal predecessors, (4336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:58:43,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3068 states to 3068 states and 4336 transitions. [2021-11-07 13:58:43,492 INFO L78 Accepts]: Start accepts. Automaton has 3068 states and 4336 transitions. Word has length 162 [2021-11-07 13:58:43,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:58:43,492 INFO L470 AbstractCegarLoop]: Abstraction has 3068 states and 4336 transitions. [2021-11-07 13:58:43,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:58:43,493 INFO L276 IsEmpty]: Start isEmpty. Operand 3068 states and 4336 transitions. [2021-11-07 13:58:43,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-11-07 13:58:43,494 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:58:43,494 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 13:58:43,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 13:58:43,496 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 13:58:43,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:58:43,497 INFO L85 PathProgramCache]: Analyzing trace with hash -1424296417, now seen corresponding path program 1 times [2021-11-07 13:58:43,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:58:43,497 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77598513] [2021-11-07 13:58:43,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:58:43,498 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:58:43,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:58:43,748 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 13:58:43,748 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:58:43,748 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77598513] [2021-11-07 13:58:43,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77598513] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:58:43,748 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:58:43,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 13:58:43,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77926758] [2021-11-07 13:58:43,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:58:43,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 13:58:43,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:58:43,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 13:58:43,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 13:58:43,750 INFO L87 Difference]: Start difference. First operand 3068 states and 4336 transitions. Second operand has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:58:43,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:58:43,901 INFO L93 Difference]: Finished difference Result 6004 states and 8501 transitions. [2021-11-07 13:58:43,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 13:58:43,901 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 0 states have call successors, (0), 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 165 [2021-11-07 13:58:43,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:58:43,910 INFO L225 Difference]: With dead ends: 6004 [2021-11-07 13:58:43,910 INFO L226 Difference]: Without dead ends: 3062 [2021-11-07 13:58:43,914 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.78ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 13:58:43,915 INFO L933 BasicCegarLoop]: 4044 mSDtfsCounter, 1 mSDsluCounter, 8081 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 12125 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.46ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.37ms IncrementalHoareTripleChecker+Time [2021-11-07 13:58:43,915 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 12125 Invalid, 9 Unknown, 0 Unchecked, 8.46ms Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 8.37ms Time] [2021-11-07 13:58:43,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3062 states. [2021-11-07 13:58:43,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3062 to 3062. [2021-11-07 13:58:43,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3062 states, 3052 states have (on average 1.4161205766710354) internal successors, (4322), 3061 states have internal predecessors, (4322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:58:43,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3062 states to 3062 states and 4322 transitions. [2021-11-07 13:58:43,972 INFO L78 Accepts]: Start accepts. Automaton has 3062 states and 4322 transitions. Word has length 165 [2021-11-07 13:58:43,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:58:43,972 INFO L470 AbstractCegarLoop]: Abstraction has 3062 states and 4322 transitions. [2021-11-07 13:58:43,972 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:58:43,973 INFO L276 IsEmpty]: Start isEmpty. Operand 3062 states and 4322 transitions. [2021-11-07 13:58:43,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2021-11-07 13:58:43,974 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:58:43,974 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 13:58:43,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 13:58:43,975 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 13:58:43,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:58:43,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1942839939, now seen corresponding path program 1 times [2021-11-07 13:58:43,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:58:43,975 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435157102] [2021-11-07 13:58:43,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:58:43,976 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:58:44,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:58:44,219 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 13:58:44,219 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:58:44,219 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435157102] [2021-11-07 13:58:44,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435157102] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:58:44,219 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:58:44,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 13:58:44,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764320319] [2021-11-07 13:58:44,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:58:44,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 13:58:44,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:58:44,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 13:58:44,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:58:44,221 INFO L87 Difference]: Start difference. First operand 3062 states and 4322 transitions. Second operand has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:58:44,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:58:44,289 INFO L93 Difference]: Finished difference Result 6016 states and 8507 transitions. [2021-11-07 13:58:44,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 13:58:44,290 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 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 207 [2021-11-07 13:58:44,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:58:44,300 INFO L225 Difference]: With dead ends: 6016 [2021-11-07 13:58:44,300 INFO L226 Difference]: Without dead ends: 3090 [2021-11-07 13:58:44,305 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.42ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:58:44,306 INFO L933 BasicCegarLoop]: 4035 mSDtfsCounter, 17 mSDsluCounter, 4032 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 8067 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.29ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.72ms IncrementalHoareTripleChecker+Time [2021-11-07 13:58:44,306 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 8067 Invalid, 8 Unknown, 0 Unchecked, 6.29ms Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 6.72ms Time] [2021-11-07 13:58:44,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3090 states. [2021-11-07 13:58:44,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3090 to 3064. [2021-11-07 13:58:44,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3064 states, 3054 states have (on average 1.4158480681074002) internal successors, (4324), 3063 states have internal predecessors, (4324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:58:44,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3064 states to 3064 states and 4324 transitions. [2021-11-07 13:58:44,363 INFO L78 Accepts]: Start accepts. Automaton has 3064 states and 4324 transitions. Word has length 207 [2021-11-07 13:58:44,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:58:44,364 INFO L470 AbstractCegarLoop]: Abstraction has 3064 states and 4324 transitions. [2021-11-07 13:58:44,364 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:58:44,364 INFO L276 IsEmpty]: Start isEmpty. Operand 3064 states and 4324 transitions. [2021-11-07 13:58:44,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2021-11-07 13:58:44,366 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:58:44,366 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 13:58:44,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 13:58:44,366 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 13:58:44,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:58:44,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1837808091, now seen corresponding path program 1 times [2021-11-07 13:58:44,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:58:44,367 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539869611] [2021-11-07 13:58:44,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:58:44,367 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:58:44,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:58:44,613 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 13:58:44,613 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:58:44,614 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539869611] [2021-11-07 13:58:44,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539869611] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 13:58:44,614 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [900961834] [2021-11-07 13:58:44,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:58:44,614 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 13:58:44,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 13:58:44,616 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 13:58:44,623 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 13:58:45,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:58:45,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 7757 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 13:58:45,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 13:58:46,146 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 13:58:46,147 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 13:58:46,411 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 13:58:46,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [900961834] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 13:58:46,412 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 13:58:46,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-07 13:58:46,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370856176] [2021-11-07 13:58:46,412 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-07 13:58:46,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 13:58:46,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:58:46,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 13:58:46,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-07 13:58:46,414 INFO L87 Difference]: Start difference. First operand 3064 states and 4324 transitions. Second operand has 7 states, 7 states have (on average 33.42857142857143) internal successors, (234), 7 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:58:46,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:58:46,555 INFO L93 Difference]: Finished difference Result 6076 states and 8587 transitions. [2021-11-07 13:58:46,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 13:58:46,556 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 33.42857142857143) internal successors, (234), 7 states have internal predecessors, (234), 0 states have call successors, (0), 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 215 [2021-11-07 13:58:46,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:58:46,564 INFO L225 Difference]: With dead ends: 6076 [2021-11-07 13:58:46,564 INFO L226 Difference]: Without dead ends: 3148 [2021-11-07 13:58:46,568 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 427 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 12.41ms TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-07 13:58:46,569 INFO L933 BasicCegarLoop]: 4035 mSDtfsCounter, 102 mSDsluCounter, 8094 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 12129 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.92ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.87ms IncrementalHoareTripleChecker+Time [2021-11-07 13:58:46,569 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 12129 Invalid, 25 Unknown, 0 Unchecked, 8.92ms Time], IncrementalHoareTripleChecker [5 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 14.87ms Time] [2021-11-07 13:58:46,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3148 states. [2021-11-07 13:58:46,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3148 to 3148. [2021-11-07 13:58:46,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3148 states, 3138 states have (on average 1.4123645634161885) internal successors, (4432), 3147 states have internal predecessors, (4432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:58:46,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3148 states to 3148 states and 4432 transitions. [2021-11-07 13:58:46,636 INFO L78 Accepts]: Start accepts. Automaton has 3148 states and 4432 transitions. Word has length 215 [2021-11-07 13:58:46,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:58:46,637 INFO L470 AbstractCegarLoop]: Abstraction has 3148 states and 4432 transitions. [2021-11-07 13:58:46,637 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 33.42857142857143) internal successors, (234), 7 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:58:46,637 INFO L276 IsEmpty]: Start isEmpty. Operand 3148 states and 4432 transitions. [2021-11-07 13:58:46,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2021-11-07 13:58:46,639 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:58:46,639 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 13:58:46,674 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-07 13:58:46,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 13:58:46,857 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 13:58:46,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:58:46,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1784827933, now seen corresponding path program 2 times [2021-11-07 13:58:46,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:58:46,858 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963294498] [2021-11-07 13:58:46,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:58:46,858 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:58:46,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:58:47,123 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-11-07 13:58:47,124 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:58:47,124 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963294498] [2021-11-07 13:58:47,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963294498] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:58:47,124 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:58:47,125 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 13:58:47,125 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533770201] [2021-11-07 13:58:47,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:58:47,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 13:58:47,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:58:47,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 13:58:47,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:58:47,126 INFO L87 Difference]: Start difference. First operand 3148 states and 4432 transitions. Second operand has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:58:48,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:58:48,276 INFO L93 Difference]: Finished difference Result 5935 states and 8393 transitions. [2021-11-07 13:58:48,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 13:58:48,276 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 239 [2021-11-07 13:58:48,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:58:48,284 INFO L225 Difference]: With dead ends: 5935 [2021-11-07 13:58:48,284 INFO L226 Difference]: Without dead ends: 2905 [2021-11-07 13:58:48,289 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.41ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:58:48,289 INFO L933 BasicCegarLoop]: 3560 mSDtfsCounter, 3806 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 878.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3806 SdHoareTripleChecker+Valid, 3761 SdHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.09ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1033.07ms IncrementalHoareTripleChecker+Time [2021-11-07 13:58:48,289 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3806 Valid, 3761 Invalid, 501 Unknown, 0 Unchecked, 9.09ms Time], IncrementalHoareTripleChecker [1 Valid, 500 Invalid, 0 Unknown, 0 Unchecked, 1033.07ms Time] [2021-11-07 13:58:48,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2905 states. [2021-11-07 13:58:48,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2905 to 2905. [2021-11-07 13:58:48,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2905 states, 2895 states have (on average 1.4189982728842832) internal successors, (4108), 2904 states have internal predecessors, (4108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:58:48,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2905 states to 2905 states and 4108 transitions. [2021-11-07 13:58:48,361 INFO L78 Accepts]: Start accepts. Automaton has 2905 states and 4108 transitions. Word has length 239 [2021-11-07 13:58:48,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:58:48,362 INFO L470 AbstractCegarLoop]: Abstraction has 2905 states and 4108 transitions. [2021-11-07 13:58:48,362 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:58:48,362 INFO L276 IsEmpty]: Start isEmpty. Operand 2905 states and 4108 transitions. [2021-11-07 13:58:48,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2021-11-07 13:58:48,364 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:58:48,364 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 13:58:48,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-07 13:58:48,364 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 13:58:48,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:58:48,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1855974302, now seen corresponding path program 1 times [2021-11-07 13:58:48,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:58:48,365 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397101180] [2021-11-07 13:58:48,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:58:48,365 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:58:48,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:58:48,756 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 2 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 13:58:48,757 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:58:48,757 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397101180] [2021-11-07 13:58:48,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397101180] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 13:58:48,757 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [394817258] [2021-11-07 13:58:48,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:58:48,757 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 13:58:48,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 13:58:48,758 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 13:58:48,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-07 13:58:49,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:58:49,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 7899 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 13:58:49,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 13:58:50,263 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 2 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 13:58:50,264 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 13:58:50,598 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 2 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 13:58:50,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [394817258] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 13:58:50,598 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 13:58:50,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2021-11-07 13:58:50,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4141403] [2021-11-07 13:58:50,599 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-07 13:58:50,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-07 13:58:50,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:58:50,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-07 13:58:50,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-11-07 13:58:50,600 INFO L87 Difference]: Start difference. First operand 2905 states and 4108 transitions. Second operand has 12 states, 12 states have (on average 23.666666666666668) internal successors, (284), 12 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:58:50,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:58:50,751 INFO L93 Difference]: Finished difference Result 5573 states and 7913 transitions. [2021-11-07 13:58:50,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-07 13:58:50,751 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 23.666666666666668) internal successors, (284), 12 states have internal predecessors, (284), 0 states have call successors, (0), 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 241 [2021-11-07 13:58:50,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:58:50,770 INFO L225 Difference]: With dead ends: 5573 [2021-11-07 13:58:50,770 INFO L226 Difference]: Without dead ends: 2975 [2021-11-07 13:58:50,774 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 487 GetRequests, 477 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 35.96ms TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-11-07 13:58:50,776 INFO L933 BasicCegarLoop]: 4033 mSDtfsCounter, 223 mSDsluCounter, 16195 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 20228 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.65ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.33ms IncrementalHoareTripleChecker+Time [2021-11-07 13:58:50,776 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [223 Valid, 20228 Invalid, 41 Unknown, 0 Unchecked, 13.65ms Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 28.33ms Time] [2021-11-07 13:58:50,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2975 states. [2021-11-07 13:58:50,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2975 to 2975. [2021-11-07 13:58:50,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2975 states, 2965 states have (on average 1.4158516020236087) internal successors, (4198), 2974 states have internal predecessors, (4198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:58:50,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2975 states to 2975 states and 4198 transitions. [2021-11-07 13:58:50,852 INFO L78 Accepts]: Start accepts. Automaton has 2975 states and 4198 transitions. Word has length 241 [2021-11-07 13:58:50,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:58:50,852 INFO L470 AbstractCegarLoop]: Abstraction has 2975 states and 4198 transitions. [2021-11-07 13:58:50,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 23.666666666666668) internal successors, (284), 12 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:58:50,853 INFO L276 IsEmpty]: Start isEmpty. Operand 2975 states and 4198 transitions. [2021-11-07 13:58:50,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2021-11-07 13:58:50,855 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:58:50,855 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 13:58:50,886 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-07 13:58:51,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-11-07 13:58:51,080 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 13:58:51,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:58:51,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1098056278, now seen corresponding path program 2 times [2021-11-07 13:58:51,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:58:51,080 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918695209] [2021-11-07 13:58:51,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:58:51,080 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:58:51,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:58:51,615 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2021-11-07 13:58:51,616 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:58:51,616 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918695209] [2021-11-07 13:58:51,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918695209] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:58:51,616 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:58:51,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-07 13:58:51,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649803887] [2021-11-07 13:58:51,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:58:51,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 13:58:51,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:58:51,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 13:58:51,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-07 13:58:51,618 INFO L87 Difference]: Start difference. First operand 2975 states and 4198 transitions. Second operand has 7 states, 7 states have (on average 31.0) internal successors, (217), 7 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:58:52,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:58:52,928 INFO L93 Difference]: Finished difference Result 8603 states and 12177 transitions. [2021-11-07 13:58:52,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 13:58:52,928 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 31.0) internal successors, (217), 7 states have internal predecessors, (217), 0 states have call successors, (0), 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 281 [2021-11-07 13:58:52,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:58:52,939 INFO L225 Difference]: With dead ends: 8603 [2021-11-07 13:58:52,939 INFO L226 Difference]: Without dead ends: 5782 [2021-11-07 13:58:52,944 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 62.74ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-11-07 13:58:52,945 INFO L933 BasicCegarLoop]: 4046 mSDtfsCounter, 4046 mSDsluCounter, 19514 mSDsCounter, 0 mSdLazyCounter, 535 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 820.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4046 SdHoareTripleChecker+Valid, 23560 SdHoareTripleChecker+Invalid, 542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 29.89ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 953.27ms IncrementalHoareTripleChecker+Time [2021-11-07 13:58:52,945 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4046 Valid, 23560 Invalid, 542 Unknown, 0 Unchecked, 29.89ms Time], IncrementalHoareTripleChecker [7 Valid, 535 Invalid, 0 Unknown, 0 Unchecked, 953.27ms Time] [2021-11-07 13:58:52,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5782 states. [2021-11-07 13:58:53,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5782 to 2975. [2021-11-07 13:58:53,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2975 states, 2965 states have (on average 1.4155143338954468) internal successors, (4197), 2974 states have internal predecessors, (4197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:58:53,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2975 states to 2975 states and 4197 transitions. [2021-11-07 13:58:53,072 INFO L78 Accepts]: Start accepts. Automaton has 2975 states and 4197 transitions. Word has length 281 [2021-11-07 13:58:53,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:58:53,072 INFO L470 AbstractCegarLoop]: Abstraction has 2975 states and 4197 transitions. [2021-11-07 13:58:53,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 31.0) internal successors, (217), 7 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:58:53,073 INFO L276 IsEmpty]: Start isEmpty. Operand 2975 states and 4197 transitions. [2021-11-07 13:58:53,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2021-11-07 13:58:53,075 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:58:53,076 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 13:58:53,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-07 13:58:53,077 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 13:58:53,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:58:53,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1747866674, now seen corresponding path program 1 times [2021-11-07 13:58:53,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:58:53,078 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030920715] [2021-11-07 13:58:53,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:58:53,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:58:53,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:58:53,423 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2021-11-07 13:58:53,423 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:58:53,424 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030920715] [2021-11-07 13:58:53,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030920715] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:58:53,424 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:58:53,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 13:58:53,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028977127] [2021-11-07 13:58:53,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:58:53,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 13:58:53,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:58:53,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 13:58:53,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 13:58:53,426 INFO L87 Difference]: Start difference. First operand 2975 states and 4197 transitions. Second operand has 5 states, 5 states have (on average 43.8) internal successors, (219), 5 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:58:53,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:58:53,709 INFO L93 Difference]: Finished difference Result 8534 states and 12086 transitions. [2021-11-07 13:58:53,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 13:58:53,710 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 43.8) internal successors, (219), 5 states have internal predecessors, (219), 0 states have call successors, (0), 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 283 [2021-11-07 13:58:53,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:58:53,720 INFO L225 Difference]: With dead ends: 8534 [2021-11-07 13:58:53,720 INFO L226 Difference]: Without dead ends: 5724 [2021-11-07 13:58:53,725 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.95ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 13:58:53,725 INFO L933 BasicCegarLoop]: 7761 mSDtfsCounter, 7520 mSDsluCounter, 15812 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7520 SdHoareTripleChecker+Valid, 23573 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.24ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.65ms IncrementalHoareTripleChecker+Time [2021-11-07 13:58:53,726 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7520 Valid, 23573 Invalid, 27 Unknown, 0 Unchecked, 24.24ms Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 16.65ms Time] [2021-11-07 13:58:53,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5724 states. [2021-11-07 13:58:53,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5724 to 2975. [2021-11-07 13:58:53,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2975 states, 2965 states have (on average 1.415177065767285) internal successors, (4196), 2974 states have internal predecessors, (4196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:58:53,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2975 states to 2975 states and 4196 transitions. [2021-11-07 13:58:53,832 INFO L78 Accepts]: Start accepts. Automaton has 2975 states and 4196 transitions. Word has length 283 [2021-11-07 13:58:53,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:58:53,832 INFO L470 AbstractCegarLoop]: Abstraction has 2975 states and 4196 transitions. [2021-11-07 13:58:53,832 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 43.8) internal successors, (219), 5 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:58:53,833 INFO L276 IsEmpty]: Start isEmpty. Operand 2975 states and 4196 transitions. [2021-11-07 13:58:53,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2021-11-07 13:58:53,835 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:58:53,835 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 13:58:53,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-07 13:58:53,835 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 13:58:53,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:58:53,836 INFO L85 PathProgramCache]: Analyzing trace with hash -271050730, now seen corresponding path program 1 times [2021-11-07 13:58:53,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:58:53,836 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424596069] [2021-11-07 13:58:53,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:58:53,836 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:58:54,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:58:54,165 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 299 trivial. 0 not checked. [2021-11-07 13:58:54,166 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:58:54,166 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424596069] [2021-11-07 13:58:54,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424596069] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:58:54,166 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:58:54,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 13:58:54,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128157723] [2021-11-07 13:58:54,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:58:54,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 13:58:54,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:58:54,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 13:58:54,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:58:54,168 INFO L87 Difference]: Start difference. First operand 2975 states and 4196 transitions. Second operand has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:58:54,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:58:54,491 INFO L93 Difference]: Finished difference Result 5969 states and 8449 transitions. [2021-11-07 13:58:54,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 13:58:54,492 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 285 [2021-11-07 13:58:54,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:58:54,498 INFO L225 Difference]: With dead ends: 5969 [2021-11-07 13:58:54,498 INFO L226 Difference]: Without dead ends: 3014 [2021-11-07 13:58:54,501 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.75ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:58:54,502 INFO L933 BasicCegarLoop]: 3995 mSDtfsCounter, 0 mSDsluCounter, 3917 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 145.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 7912 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.25ms SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 184.14ms IncrementalHoareTripleChecker+Time [2021-11-07 13:58:54,503 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 7912 Invalid, 193 Unknown, 0 Unchecked, 7.25ms Time], IncrementalHoareTripleChecker [76 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 184.14ms Time] [2021-11-07 13:58:54,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3014 states. [2021-11-07 13:58:54,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3014 to 3014. [2021-11-07 13:58:54,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3014 states, 3004 states have (on average 1.4097869507323568) internal successors, (4235), 3013 states have internal predecessors, (4235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:58:54,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3014 states to 3014 states and 4235 transitions. [2021-11-07 13:58:54,614 INFO L78 Accepts]: Start accepts. Automaton has 3014 states and 4235 transitions. Word has length 285 [2021-11-07 13:58:54,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:58:54,614 INFO L470 AbstractCegarLoop]: Abstraction has 3014 states and 4235 transitions. [2021-11-07 13:58:54,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:58:54,614 INFO L276 IsEmpty]: Start isEmpty. Operand 3014 states and 4235 transitions. [2021-11-07 13:58:54,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2021-11-07 13:58:54,617 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:58:54,617 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 13:58:54,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-07 13:58:54,617 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 13:58:54,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:58:54,618 INFO L85 PathProgramCache]: Analyzing trace with hash 9477550, now seen corresponding path program 1 times [2021-11-07 13:58:54,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:58:54,618 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336205154] [2021-11-07 13:58:54,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:58:54,618 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:58:54,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:58:55,042 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 338 trivial. 0 not checked. [2021-11-07 13:58:55,043 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:58:55,043 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336205154] [2021-11-07 13:58:55,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336205154] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:58:55,044 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:58:55,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 13:58:55,044 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084832404] [2021-11-07 13:58:55,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:58:55,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 13:58:55,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:58:55,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 13:58:55,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:58:55,046 INFO L87 Difference]: Start difference. First operand 3014 states and 4235 transitions. Second operand has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:58:55,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:58:55,233 INFO L93 Difference]: Finished difference Result 5363 states and 7613 transitions. [2021-11-07 13:58:55,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 13:58:55,234 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 0 states have call successors, (0), 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 324 [2021-11-07 13:58:55,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:58:55,243 INFO L225 Difference]: With dead ends: 5363 [2021-11-07 13:58:55,244 INFO L226 Difference]: Without dead ends: 5347 [2021-11-07 13:58:55,245 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.41ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:58:55,246 INFO L933 BasicCegarLoop]: 7388 mSDtfsCounter, 3564 mSDsluCounter, 3812 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3564 SdHoareTripleChecker+Valid, 11200 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.31ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.26ms IncrementalHoareTripleChecker+Time [2021-11-07 13:58:55,246 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3564 Valid, 11200 Invalid, 30 Unknown, 0 Unchecked, 9.31ms Time], IncrementalHoareTripleChecker [16 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 29.26ms Time] [2021-11-07 13:58:55,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5347 states. [2021-11-07 13:58:55,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5347 to 2998. [2021-11-07 13:58:55,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2998 states, 2996 states have (on average 1.408210947930574) internal successors, (4219), 2997 states have internal predecessors, (4219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:58:55,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2998 states to 2998 states and 4219 transitions. [2021-11-07 13:58:55,355 INFO L78 Accepts]: Start accepts. Automaton has 2998 states and 4219 transitions. Word has length 324 [2021-11-07 13:58:55,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:58:55,356 INFO L470 AbstractCegarLoop]: Abstraction has 2998 states and 4219 transitions. [2021-11-07 13:58:55,356 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:58:55,356 INFO L276 IsEmpty]: Start isEmpty. Operand 2998 states and 4219 transitions. [2021-11-07 13:58:55,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2021-11-07 13:58:55,359 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:58:55,359 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 13:58:55,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-07 13:58:55,360 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 13:58:55,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:58:55,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1111730830, now seen corresponding path program 1 times [2021-11-07 13:58:55,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:58:55,361 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850593964] [2021-11-07 13:58:55,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:58:55,361 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:58:55,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:58:56,122 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2021-11-07 13:58:56,122 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:58:56,122 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850593964] [2021-11-07 13:58:56,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850593964] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 13:58:56,123 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [312444304] [2021-11-07 13:58:56,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:58:56,123 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 13:58:56,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 13:58:56,124 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 13:58:56,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-07 13:59:16,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:59:16,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 8419 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-07 13:59:16,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 13:59:16,666 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2021-11-07 13:59:16,666 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 13:59:17,215 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2021-11-07 13:59:17,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [312444304] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 13:59:17,216 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 13:59:17,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-07 13:59:17,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470680683] [2021-11-07 13:59:17,216 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-07 13:59:17,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 13:59:17,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:59:17,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 13:59:17,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-11-07 13:59:17,219 INFO L87 Difference]: Start difference. First operand 2998 states and 4219 transitions. Second operand has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:59:18,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:59:18,148 INFO L93 Difference]: Finished difference Result 6092 states and 8650 transitions. [2021-11-07 13:59:18,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 13:59:18,149 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 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 333 [2021-11-07 13:59:18,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:59:18,157 INFO L225 Difference]: With dead ends: 6092 [2021-11-07 13:59:18,157 INFO L226 Difference]: Without dead ends: 3115 [2021-11-07 13:59:18,164 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 669 GetRequests, 663 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 52.59ms TimeCoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2021-11-07 13:59:18,164 INFO L933 BasicCegarLoop]: 3979 mSDtfsCounter, 0 mSDsluCounter, 7802 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 422 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 587.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 11781 SdHoareTripleChecker+Invalid, 851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.58ms SdHoareTripleChecker+Time, 422 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 735.12ms IncrementalHoareTripleChecker+Time [2021-11-07 13:59:18,164 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 11781 Invalid, 851 Unknown, 0 Unchecked, 11.58ms Time], IncrementalHoareTripleChecker [422 Valid, 429 Invalid, 0 Unknown, 0 Unchecked, 735.12ms Time] [2021-11-07 13:59:18,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3115 states. [2021-11-07 13:59:18,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3115 to 3115. [2021-11-07 13:59:18,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3115 states, 3113 states have (on average 1.3928686154834564) internal successors, (4336), 3114 states have internal predecessors, (4336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:59:18,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3115 states to 3115 states and 4336 transitions. [2021-11-07 13:59:18,287 INFO L78 Accepts]: Start accepts. Automaton has 3115 states and 4336 transitions. Word has length 333 [2021-11-07 13:59:18,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:59:18,287 INFO L470 AbstractCegarLoop]: Abstraction has 3115 states and 4336 transitions. [2021-11-07 13:59:18,288 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:59:18,288 INFO L276 IsEmpty]: Start isEmpty. Operand 3115 states and 4336 transitions. [2021-11-07 13:59:18,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 451 [2021-11-07 13:59:18,290 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:59:18,290 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 13:59:18,367 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-07 13:59:18,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 13:59:18,500 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 13:59:18,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:59:18,500 INFO L85 PathProgramCache]: Analyzing trace with hash 459833866, now seen corresponding path program 2 times [2021-11-07 13:59:18,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:59:18,500 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671949758] [2021-11-07 13:59:18,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:59:18,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:59:23,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:00:45,891 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 687 trivial. 0 not checked. [2021-11-07 14:00:45,891 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:00:45,891 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671949758] [2021-11-07 14:00:45,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671949758] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:00:45,892 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 14:00:45,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [85] imperfect sequences [] total 85 [2021-11-07 14:00:45,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87115360] [2021-11-07 14:00:45,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:00:45,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2021-11-07 14:00:45,892 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:00:45,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2021-11-07 14:00:45,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2592, Invalid=4718, Unknown=0, NotChecked=0, Total=7310 [2021-11-07 14:00:45,895 INFO L87 Difference]: Start difference. First operand 3115 states and 4336 transitions. Second operand has 86 states, 86 states have (on average 3.127906976744186) internal successors, (269), 85 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:00:48,754 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 14:00:51,342 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 14:00:54,654 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 14:00:57,396 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 14:01:17,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:01:17,055 INFO L93 Difference]: Finished difference Result 8614 states and 12147 transitions. [2021-11-07 14:01:17,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 14:01:17,056 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 3.127906976744186) internal successors, (269), 85 states have internal predecessors, (269), 0 states have call successors, (0), 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 450 [2021-11-07 14:01:17,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:01:17,068 INFO L225 Difference]: With dead ends: 8614 [2021-11-07 14:01:17,069 INFO L226 Difference]: Without dead ends: 5816 [2021-11-07 14:01:17,076 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 128 SyntacticMatches, 39 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1720 ImplicationChecksByTransitivity, 11387.90ms TimeCoverageRelationStatistics Valid=2986, Invalid=5204, Unknown=0, NotChecked=0, Total=8190 [2021-11-07 14:01:17,076 INFO L933 BasicCegarLoop]: 6831 mSDtfsCounter, 4970 mSDsluCounter, 38246 mSDsCounter, 0 mSdLazyCounter, 10814 mSolverCounterSat, 899 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26707.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4970 SdHoareTripleChecker+Valid, 45077 SdHoareTripleChecker+Invalid, 11716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 81.76ms SdHoareTripleChecker+Time, 899 IncrementalHoareTripleChecker+Valid, 10814 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28904.56ms IncrementalHoareTripleChecker+Time [2021-11-07 14:01:17,077 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4970 Valid, 45077 Invalid, 11716 Unknown, 0 Unchecked, 81.76ms Time], IncrementalHoareTripleChecker [899 Valid, 10814 Invalid, 3 Unknown, 0 Unchecked, 28904.56ms Time] [2021-11-07 14:01:17,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5816 states. [2021-11-07 14:01:17,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5816 to 3117. [2021-11-07 14:01:17,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3117 states, 3115 states have (on average 1.3926163723916534) internal successors, (4338), 3116 states have internal predecessors, (4338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:01:17,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3117 states to 3117 states and 4338 transitions. [2021-11-07 14:01:17,242 INFO L78 Accepts]: Start accepts. Automaton has 3117 states and 4338 transitions. Word has length 450 [2021-11-07 14:01:17,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:01:17,242 INFO L470 AbstractCegarLoop]: Abstraction has 3117 states and 4338 transitions. [2021-11-07 14:01:17,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 86 states have (on average 3.127906976744186) internal successors, (269), 85 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:01:17,243 INFO L276 IsEmpty]: Start isEmpty. Operand 3117 states and 4338 transitions. [2021-11-07 14:01:17,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 453 [2021-11-07 14:01:17,245 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:01:17,246 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 14:01:17,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-07 14:01:17,246 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 14:01:17,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:01:17,246 INFO L85 PathProgramCache]: Analyzing trace with hash -592117851, now seen corresponding path program 1 times [2021-11-07 14:01:17,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:01:17,247 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120023753] [2021-11-07 14:01:17,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:01:17,247 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:01:21,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:02:18,934 INFO L134 CoverageAnalysis]: Checked inductivity of 691 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 687 trivial. 0 not checked. [2021-11-07 14:02:18,934 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:02:18,934 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120023753] [2021-11-07 14:02:18,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120023753] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 14:02:18,934 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1925563695] [2021-11-07 14:02:18,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:02:18,935 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 14:02:18,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 14:02:18,936 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 14:02:18,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-07 14:10:17,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:10:17,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 9129 conjuncts, 1183 conjunts are in the unsatisfiable core [2021-11-07 14:10:17,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 14:10:17,997 INFO L354 Elim1Store]: treesize reduction 288, result has 0.3 percent of original size [2021-11-07 14:10:17,998 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 606 treesize of output 588 [2021-11-07 14:10:18,615 INFO L354 Elim1Store]: treesize reduction 16, result has 23.8 percent of original size [2021-11-07 14:10:18,615 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 22 [2021-11-07 14:10:29,008 INFO L354 Elim1Store]: treesize reduction 38, result has 22.4 percent of original size [2021-11-07 14:10:29,008 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 34 [2021-11-07 14:10:37,645 INFO L354 Elim1Store]: treesize reduction 38, result has 22.4 percent of original size [2021-11-07 14:10:37,645 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 34 [2021-11-07 14:10:47,006 INFO L354 Elim1Store]: treesize reduction 38, result has 22.4 percent of original size [2021-11-07 14:10:47,007 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 34 [2021-11-07 14:11:03,252 INFO L354 Elim1Store]: treesize reduction 38, result has 44.9 percent of original size [2021-11-07 14:11:03,252 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 9 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 30 treesize of output 53 [2021-11-07 14:11:03,669 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-11-07 14:11:04,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 14:11:04,096 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 34 [2021-11-07 14:11:11,534 INFO L354 Elim1Store]: treesize reduction 42, result has 42.5 percent of original size [2021-11-07 14:11:11,535 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 9 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 39 treesize of output 60 [2021-11-07 14:11:12,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 14:11:12,005 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 20 [2021-11-07 14:11:12,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 14:11:12,461 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 14:11:12,463 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 47 [2021-11-07 14:11:16,298 INFO L354 Elim1Store]: treesize reduction 44, result has 41.3 percent of original size [2021-11-07 14:11:16,298 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 9 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 71 treesize of output 86 [2021-11-07 14:11:16,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 14:11:16,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 14:11:16,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 14:11:16,694 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 33 [2021-11-07 14:11:16,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 14:11:16,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 14:11:16,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 14:11:16,865 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 33 [2021-11-07 14:11:22,395 INFO L354 Elim1Store]: treesize reduction 38, result has 44.9 percent of original size [2021-11-07 14:11:22,395 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 114 treesize of output 125 [2021-11-07 14:11:23,333 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 38 [2021-11-07 14:11:23,725 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 38 [2021-11-07 14:11:33,935 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [|ULTIMATE.start_#Ultimate.C_memset_#ptr.base|] [2021-11-07 14:11:33,936 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-07 14:11:33,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [92] total 92 [2021-11-07 14:11:33,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757482119] [2021-11-07 14:11:33,936 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-07 14:11:33,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 93 states [2021-11-07 14:11:33,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:11:33,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2021-11-07 14:11:33,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2663, Invalid=7237, Unknown=0, NotChecked=0, Total=9900 [2021-11-07 14:11:33,939 INFO L87 Difference]: Start difference. First operand 3117 states and 4338 transitions. Second operand has 93 states, 93 states have (on average 2.913978494623656) internal successors, (271), 92 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:11:38,079 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 14:11:41,333 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 14:11:43,373 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 14:11:45,841 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 14:11:47,931 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 14:11:50,524 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 14:11:52,468 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 14:11:56,395 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] Killed by 15