./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 c36dfa3b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/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-c36dfa3 [2021-11-04 05:28:18,961 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-04 05:28:18,962 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-04 05:28:18,998 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-04 05:28:19,015 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-04 05:28:19,022 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-04 05:28:19,024 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-04 05:28:19,027 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-04 05:28:19,028 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-04 05:28:19,030 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-04 05:28:19,031 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-04 05:28:19,032 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-04 05:28:19,032 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-04 05:28:19,033 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-04 05:28:19,034 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-04 05:28:19,035 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-04 05:28:19,036 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-04 05:28:19,037 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-04 05:28:19,038 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-04 05:28:19,039 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-04 05:28:19,040 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-04 05:28:19,041 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-04 05:28:19,042 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-04 05:28:19,043 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-04 05:28:19,045 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-04 05:28:19,045 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-04 05:28:19,046 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-04 05:28:19,046 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-04 05:28:19,047 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-04 05:28:19,048 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-04 05:28:19,048 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-04 05:28:19,048 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-04 05:28:19,049 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-04 05:28:19,050 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-04 05:28:19,050 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-04 05:28:19,051 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-04 05:28:19,051 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-04 05:28:19,052 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-04 05:28:19,052 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-04 05:28:19,053 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-04 05:28:19,053 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-04 05:28:19,054 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-04 05:28:19,072 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-04 05:28:19,072 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-04 05:28:19,073 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-04 05:28:19,073 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-04 05:28:19,074 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-04 05:28:19,074 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-04 05:28:19,074 INFO L138 SettingsManager]: * Use SBE=true [2021-11-04 05:28:19,074 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-04 05:28:19,075 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-04 05:28:19,075 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-04 05:28:19,075 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-04 05:28:19,075 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-04 05:28:19,075 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-04 05:28:19,076 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-04 05:28:19,076 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-04 05:28:19,076 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-04 05:28:19,076 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-04 05:28:19,076 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-04 05:28:19,077 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-04 05:28:19,077 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 05:28:19,077 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-04 05:28:19,077 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-04 05:28:19,077 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-04 05:28:19,078 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-04 05:28:19,078 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-04 05:28:19,078 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-04 05:28:19,078 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-04 05:28:19,078 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-04 05:28:19,079 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-04 05:28:19,079 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d7bcbc7066f71bf6da4f6dede38e3e78b7607c55d003b39ab5a687b04791c2e1 [2021-11-04 05:28:19,280 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-04 05:28:19,300 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-04 05:28:19,302 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-04 05:28:19,303 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-04 05:28:19,304 INFO L275 PluginConnector]: CDTParser initialized [2021-11-04 05:28:19,305 INFO L432 ainManager$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 [2021-11-04 05:28:19,349 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e740fe85e/0d828992e3e34669a371ec721a07d405/FLAG3909d325c [2021-11-04 05:28:19,946 INFO L306 CDTParser]: Found 1 translation units. [2021-11-04 05:28:19,947 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 [2021-11-04 05:28:19,980 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e740fe85e/0d828992e3e34669a371ec721a07d405/FLAG3909d325c [2021-11-04 05:28:20,138 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e740fe85e/0d828992e3e34669a371ec721a07d405 [2021-11-04 05:28:20,140 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-04 05:28:20,142 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-04 05:28:20,147 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-04 05:28:20,148 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-04 05:28:20,153 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-04 05:28:20,153 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 05:28:20" (1/1) ... [2021-11-04 05:28:20,154 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27417bbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:28:20, skipping insertion in model container [2021-11-04 05:28:20,154 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 05:28:20" (1/1) ... [2021-11-04 05:28:20,160 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-04 05:28:20,245 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-04 05:28:20,993 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] [2021-11-04 05:28:21,004 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 05:28:21,095 INFO L203 MainTranslator]: Completed pre-run [2021-11-04 05:28:21,250 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] [2021-11-04 05:28:21,257 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 05:28:21,367 INFO L208 MainTranslator]: Completed translation [2021-11-04 05:28:21,367 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:28:21 WrapperNode [2021-11-04 05:28:21,368 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-04 05:28:21,369 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-04 05:28:21,370 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-04 05:28:21,370 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-04 05:28:21,376 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:28:21" (1/1) ... [2021-11-04 05:28:21,441 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:28:21" (1/1) ... [2021-11-04 05:28:21,876 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-04 05:28:21,877 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-04 05:28:21,877 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-04 05:28:21,877 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-04 05:28:21,885 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:28:21" (1/1) ... [2021-11-04 05:28:21,899 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:28:21" (1/1) ... [2021-11-04 05:28:22,066 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:28:21" (1/1) ... [2021-11-04 05:28:22,066 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:28:21" (1/1) ... [2021-11-04 05:28:22,299 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:28:21" (1/1) ... [2021-11-04 05:28:22,359 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:28:21" (1/1) ... [2021-11-04 05:28:22,404 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:28:21" (1/1) ... [2021-11-04 05:28:22,552 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-04 05:28:22,553 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-04 05:28:22,553 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-04 05:28:22,553 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-04 05:28:22,554 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:28:21" (1/1) ... [2021-11-04 05:28:22,560 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 05:28:22,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 05:28:22,612 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-04 05:28:22,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-04 05:28:22,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-04 05:28:22,658 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-04 05:28:22,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-04 05:28:22,659 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-04 05:28:22,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-04 05:28:22,659 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-04 05:28:22,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-04 05:28:22,659 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-04 05:28:22,659 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-04 05:28:22,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-04 05:28:22,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-04 05:28:22,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-04 05:28:22,660 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-04 05:28:22,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-04 05:28:22,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-04 05:28:26,927 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-04 05:28:26,927 INFO L299 CfgBuilder]: Removed 2531 assume(true) statements. [2021-11-04 05:28:26,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 05:28:26 BoogieIcfgContainer [2021-11-04 05:28:26,932 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-04 05:28:26,934 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-04 05:28:26,934 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-04 05:28:26,937 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-04 05:28:26,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.11 05:28:20" (1/3) ... [2021-11-04 05:28:26,938 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@784b4914 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 05:28:26, skipping insertion in model container [2021-11-04 05:28:26,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:28:21" (2/3) ... [2021-11-04 05:28:26,939 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@784b4914 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 05:28:26, skipping insertion in model container [2021-11-04 05:28:26,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 05:28:26" (3/3) ... [2021-11-04 05:28:26,941 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-stable-42f9f8d-1-111_1a-sound--oss--opl3.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-04 05:28:26,947 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-04 05:28:26,947 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-11-04 05:28:27,007 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-04 05:28:27,014 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-04 05:28:27,015 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-11-04 05:28:27,073 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) [2021-11-04 05:28:27,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-11-04 05:28:27,093 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 05:28:27,094 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] [2021-11-04 05:28:27,094 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)] === [2021-11-04 05:28:27,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 05:28:27,099 INFO L85 PathProgramCache]: Analyzing trace with hash -1906996444, now seen corresponding path program 1 times [2021-11-04 05:28:27,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 05:28:27,107 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959157945] [2021-11-04 05:28:27,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 05:28:27,109 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 05:28:27,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 05:28:27,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 05:28:27,838 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 05:28:27,838 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959157945] [2021-11-04 05:28:27,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959157945] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 05:28:27,839 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 05:28:27,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 05:28:27,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266166914] [2021-11-04 05:28:27,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 05:28:27,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-04 05:28:27,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 05:28:27,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-04 05:28:27,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-04 05:28:27,872 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) [2021-11-04 05:28:32,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 05:28:32,548 INFO L93 Difference]: Finished difference Result 5730 states and 8183 transitions. [2021-11-04 05:28:32,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-04 05:28:32,552 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 [2021-11-04 05:28:32,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 05:28:32,585 INFO L225 Difference]: With dead ends: 5730 [2021-11-04 05:28:32,585 INFO L226 Difference]: Without dead ends: 2852 [2021-11-04 05:28:32,596 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-04 05:28:32,599 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4066 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3577.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 4066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.13ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4066 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4501.76ms IncrementalHoareTripleChecker+Time [2021-11-04 05:28:32,600 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 3 Invalid, 4066 Unknown, 0 Unchecked, 8.13ms Time], IncrementalHoareTripleChecker [0 Valid, 4066 Invalid, 0 Unknown, 0 Unchecked, 4501.76ms Time] [2021-11-04 05:28:32,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2852 states. [2021-11-04 05:28:32,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2852 to 2852. [2021-11-04 05:28:32,712 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) [2021-11-04 05:28:32,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2852 states to 2852 states and 4047 transitions. [2021-11-04 05:28:32,721 INFO L78 Accepts]: Start accepts. Automaton has 2852 states and 4047 transitions. Word has length 148 [2021-11-04 05:28:32,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 05:28:32,722 INFO L470 AbstractCegarLoop]: Abstraction has 2852 states and 4047 transitions. [2021-11-04 05:28:32,722 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) [2021-11-04 05:28:32,722 INFO L276 IsEmpty]: Start isEmpty. Operand 2852 states and 4047 transitions. [2021-11-04 05:28:32,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-11-04 05:28:32,724 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 05:28:32,724 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] [2021-11-04 05:28:32,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-04 05:28:32,725 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)] === [2021-11-04 05:28:32,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 05:28:32,726 INFO L85 PathProgramCache]: Analyzing trace with hash 267116844, now seen corresponding path program 1 times [2021-11-04 05:28:32,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 05:28:32,726 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209135117] [2021-11-04 05:28:32,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 05:28:32,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 05:28:32,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 05:28:33,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 05:28:33,025 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 05:28:33,025 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209135117] [2021-11-04 05:28:33,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209135117] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 05:28:33,026 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 05:28:33,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 05:28:33,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558861362] [2021-11-04 05:28:33,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 05:28:33,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 05:28:33,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 05:28:33,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 05:28:33,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 05:28:33,029 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) [2021-11-04 05:28:40,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 05:28:40,290 INFO L93 Difference]: Finished difference Result 5723 states and 8151 transitions. [2021-11-04 05:28:40,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 05:28:40,291 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 [2021-11-04 05:28:40,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 05:28:40,303 INFO L225 Difference]: With dead ends: 5723 [2021-11-04 05:28:40,303 INFO L226 Difference]: Without dead ends: 2891 [2021-11-04 05:28:40,308 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.46ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 05:28:40,309 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 3930 mSDsCounter, 0 mSdLazyCounter, 8055 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5883.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 8131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.43ms SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 8055 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7097.70ms IncrementalHoareTripleChecker+Time [2021-11-04 05:28:40,310 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 8131 Unknown, 0 Unchecked, 16.43ms Time], IncrementalHoareTripleChecker [76 Valid, 8055 Invalid, 0 Unknown, 0 Unchecked, 7097.70ms Time] [2021-11-04 05:28:40,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2891 states. [2021-11-04 05:28:40,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2891 to 2891. [2021-11-04 05:28:40,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2891 states, 2881 states have (on average 1.4182575494619925) internal successors, (4086), 2890 states have internal predecessors, (4086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 05:28:40,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2891 states to 2891 states and 4086 transitions. [2021-11-04 05:28:40,367 INFO L78 Accepts]: Start accepts. Automaton has 2891 states and 4086 transitions. Word has length 148 [2021-11-04 05:28:40,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 05:28:40,368 INFO L470 AbstractCegarLoop]: Abstraction has 2891 states and 4086 transitions. [2021-11-04 05:28:40,368 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) [2021-11-04 05:28:40,368 INFO L276 IsEmpty]: Start isEmpty. Operand 2891 states and 4086 transitions. [2021-11-04 05:28:40,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2021-11-04 05:28:40,370 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 05:28:40,370 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 05:28:40,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-04 05:28:40,371 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)] === [2021-11-04 05:28:40,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 05:28:40,371 INFO L85 PathProgramCache]: Analyzing trace with hash 1544597652, now seen corresponding path program 1 times [2021-11-04 05:28:40,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 05:28:40,372 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011199997] [2021-11-04 05:28:40,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 05:28:40,372 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 05:28:40,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 05:28:40,745 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-11-04 05:28:40,746 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 05:28:40,746 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011199997] [2021-11-04 05:28:40,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011199997] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 05:28:40,746 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 05:28:40,747 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 05:28:40,747 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976223873] [2021-11-04 05:28:40,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 05:28:40,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 05:28:40,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 05:28:40,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 05:28:40,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 05:28:40,750 INFO L87 Difference]: Start difference. First operand 2891 states and 4086 transitions. Second operand has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 05:28:47,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 05:28:47,222 INFO L93 Difference]: Finished difference Result 5823 states and 8252 transitions. [2021-11-04 05:28:47,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 05:28:47,224 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 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 187 [2021-11-04 05:28:47,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 05:28:47,237 INFO L225 Difference]: With dead ends: 5823 [2021-11-04 05:28:47,237 INFO L226 Difference]: Without dead ends: 3107 [2021-11-04 05:28:47,241 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.77ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 05:28:47,242 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 463 mSDsluCounter, 3779 mSDsCounter, 0 mSdLazyCounter, 7918 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5229.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 7920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.84ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7918 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6332.68ms IncrementalHoareTripleChecker+Time [2021-11-04 05:28:47,243 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [463 Valid, 0 Invalid, 7920 Unknown, 0 Unchecked, 13.84ms Time], IncrementalHoareTripleChecker [2 Valid, 7918 Invalid, 0 Unknown, 0 Unchecked, 6332.68ms Time] [2021-11-04 05:28:47,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3107 states. [2021-11-04 05:28:47,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3107 to 3107. [2021-11-04 05:28:47,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3107 states, 3097 states have (on average 1.4139489828866645) internal successors, (4379), 3106 states have internal predecessors, (4379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 05:28:47,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3107 states to 3107 states and 4379 transitions. [2021-11-04 05:28:47,363 INFO L78 Accepts]: Start accepts. Automaton has 3107 states and 4379 transitions. Word has length 187 [2021-11-04 05:28:47,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 05:28:47,364 INFO L470 AbstractCegarLoop]: Abstraction has 3107 states and 4379 transitions. [2021-11-04 05:28:47,364 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 05:28:47,364 INFO L276 IsEmpty]: Start isEmpty. Operand 3107 states and 4379 transitions. [2021-11-04 05:28:47,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-11-04 05:28:47,366 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 05:28:47,366 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] [2021-11-04 05:28:47,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-04 05:28:47,367 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)] === [2021-11-04 05:28:47,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 05:28:47,376 INFO L85 PathProgramCache]: Analyzing trace with hash -188111390, now seen corresponding path program 1 times [2021-11-04 05:28:47,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 05:28:47,378 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348783564] [2021-11-04 05:28:47,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 05:28:47,379 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 05:28:47,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 05:28:47,847 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-11-04 05:28:47,847 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 05:28:47,847 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348783564] [2021-11-04 05:28:47,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348783564] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 05:28:47,848 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 05:28:47,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 05:28:47,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974136188] [2021-11-04 05:28:47,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 05:28:47,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 05:28:47,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 05:28:47,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 05:28:47,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 05:28:47,850 INFO L87 Difference]: Start difference. First operand 3107 states and 4379 transitions. Second operand has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 2 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 05:28:52,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 05:28:52,271 INFO L93 Difference]: Finished difference Result 6039 states and 8544 transitions. [2021-11-04 05:28:52,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 05:28:52,272 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 2 states have internal predecessors, (199), 0 states have call successors, (0), 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 199 [2021-11-04 05:28:52,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 05:28:52,284 INFO L225 Difference]: With dead ends: 6039 [2021-11-04 05:28:52,284 INFO L226 Difference]: Without dead ends: 3107 [2021-11-04 05:28:52,290 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.71ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 05:28:52,291 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3864 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4046 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3491.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3864 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4046 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.75ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4046 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4296.52ms IncrementalHoareTripleChecker+Time [2021-11-04 05:28:52,291 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3864 Valid, 0 Invalid, 4046 Unknown, 0 Unchecked, 5.75ms Time], IncrementalHoareTripleChecker [0 Valid, 4046 Invalid, 0 Unknown, 0 Unchecked, 4296.52ms Time] [2021-11-04 05:28:52,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3107 states. [2021-11-04 05:28:52,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3107 to 3107. [2021-11-04 05:28:52,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3107 states, 3097 states have (on average 1.4133031966419116) internal successors, (4377), 3106 states have internal predecessors, (4377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 05:28:52,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3107 states to 3107 states and 4377 transitions. [2021-11-04 05:28:52,369 INFO L78 Accepts]: Start accepts. Automaton has 3107 states and 4377 transitions. Word has length 199 [2021-11-04 05:28:52,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 05:28:52,370 INFO L470 AbstractCegarLoop]: Abstraction has 3107 states and 4377 transitions. [2021-11-04 05:28:52,370 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 2 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 05:28:52,371 INFO L276 IsEmpty]: Start isEmpty. Operand 3107 states and 4377 transitions. [2021-11-04 05:28:52,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2021-11-04 05:28:52,373 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 05:28:52,373 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] [2021-11-04 05:28:52,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-04 05:28:52,373 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)] === [2021-11-04 05:28:52,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 05:28:52,374 INFO L85 PathProgramCache]: Analyzing trace with hash 706768702, now seen corresponding path program 1 times [2021-11-04 05:28:52,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 05:28:52,375 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265290308] [2021-11-04 05:28:52,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 05:28:52,375 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 05:28:52,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 05:28:52,756 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-11-04 05:28:52,757 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 05:28:52,757 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265290308] [2021-11-04 05:28:52,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265290308] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 05:28:52,758 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 05:28:52,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 05:28:52,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961412178] [2021-11-04 05:28:52,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 05:28:52,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 05:28:52,760 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 05:28:52,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 05:28:52,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 05:28:52,761 INFO L87 Difference]: Start difference. First operand 3107 states and 4377 transitions. Second operand has 4 states, 4 states have (on average 50.25) internal successors, (201), 4 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 05:29:00,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 05:29:00,985 INFO L93 Difference]: Finished difference Result 6045 states and 8548 transitions. [2021-11-04 05:29:00,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-04 05:29:00,986 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 50.25) internal successors, (201), 4 states have internal predecessors, (201), 0 states have call successors, (0), 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 201 [2021-11-04 05:29:00,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 05:29:01,000 INFO L225 Difference]: With dead ends: 6045 [2021-11-04 05:29:01,000 INFO L226 Difference]: Without dead ends: 3107 [2021-11-04 05:29:01,004 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.84ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 05:29:01,006 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3 mSDsluCounter, 8083 mSDsCounter, 0 mSdLazyCounter, 12137 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6756.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 12138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.56ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8093.10ms IncrementalHoareTripleChecker+Time [2021-11-04 05:29:01,007 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 0 Invalid, 12138 Unknown, 0 Unchecked, 15.56ms Time], IncrementalHoareTripleChecker [1 Valid, 12137 Invalid, 0 Unknown, 0 Unchecked, 8093.10ms Time] [2021-11-04 05:29:01,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3107 states. [2021-11-04 05:29:01,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3107 to 3107. [2021-11-04 05:29:01,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3107 states, 3097 states have (on average 1.4126574103971585) internal successors, (4375), 3106 states have internal predecessors, (4375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 05:29:01,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3107 states to 3107 states and 4375 transitions. [2021-11-04 05:29:01,069 INFO L78 Accepts]: Start accepts. Automaton has 3107 states and 4375 transitions. Word has length 201 [2021-11-04 05:29:01,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 05:29:01,072 INFO L470 AbstractCegarLoop]: Abstraction has 3107 states and 4375 transitions. [2021-11-04 05:29:01,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.25) internal successors, (201), 4 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 05:29:01,072 INFO L276 IsEmpty]: Start isEmpty. Operand 3107 states and 4375 transitions. [2021-11-04 05:29:01,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-11-04 05:29:01,074 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 05:29:01,075 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] [2021-11-04 05:29:01,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-04 05:29:01,075 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)] === [2021-11-04 05:29:01,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 05:29:01,081 INFO L85 PathProgramCache]: Analyzing trace with hash 2089935799, now seen corresponding path program 1 times [2021-11-04 05:29:01,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 05:29:01,081 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679569056] [2021-11-04 05:29:01,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 05:29:01,081 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 05:29:01,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 05:29:01,392 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-11-04 05:29:01,392 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 05:29:01,392 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679569056] [2021-11-04 05:29:01,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679569056] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 05:29:01,393 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 05:29:01,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 05:29:01,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702484636] [2021-11-04 05:29:01,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 05:29:01,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 05:29:01,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 05:29:01,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 05:29:01,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 05:29:01,394 INFO L87 Difference]: Start difference. First operand 3107 states and 4375 transitions. Second operand has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 05:29:09,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 05:29:09,299 INFO L93 Difference]: Finished difference Result 6043 states and 8540 transitions. [2021-11-04 05:29:09,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-04 05:29:09,300 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 0 states have call successors, (0), 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 204 [2021-11-04 05:29:09,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 05:29:09,311 INFO L225 Difference]: With dead ends: 6043 [2021-11-04 05:29:09,311 INFO L226 Difference]: Without dead ends: 3101 [2021-11-04 05:29:09,316 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.10ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 05:29:09,317 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 8081 mSDsCounter, 0 mSdLazyCounter, 12132 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6453.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 12134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.43ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7775.18ms IncrementalHoareTripleChecker+Time [2021-11-04 05:29:09,317 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 12134 Unknown, 0 Unchecked, 13.43ms Time], IncrementalHoareTripleChecker [2 Valid, 12132 Invalid, 0 Unknown, 0 Unchecked, 7775.18ms Time] [2021-11-04 05:29:09,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3101 states. [2021-11-04 05:29:09,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3101 to 3101. [2021-11-04 05:29:09,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3101 states, 3091 states have (on average 1.410870268521514) internal successors, (4361), 3100 states have internal predecessors, (4361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 05:29:09,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3101 states to 3101 states and 4361 transitions. [2021-11-04 05:29:09,446 INFO L78 Accepts]: Start accepts. Automaton has 3101 states and 4361 transitions. Word has length 204 [2021-11-04 05:29:09,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 05:29:09,446 INFO L470 AbstractCegarLoop]: Abstraction has 3101 states and 4361 transitions. [2021-11-04 05:29:09,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 05:29:09,447 INFO L276 IsEmpty]: Start isEmpty. Operand 3101 states and 4361 transitions. [2021-11-04 05:29:09,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2021-11-04 05:29:09,450 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 05:29:09,450 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 05:29:09,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-04 05:29:09,450 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)] === [2021-11-04 05:29:09,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 05:29:09,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1004154341, now seen corresponding path program 1 times [2021-11-04 05:29:09,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 05:29:09,451 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928934801] [2021-11-04 05:29:09,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 05:29:09,452 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 05:29:09,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 05:29:09,781 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-11-04 05:29:09,782 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 05:29:09,782 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928934801] [2021-11-04 05:29:09,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928934801] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 05:29:09,782 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 05:29:09,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 05:29:09,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177922975] [2021-11-04 05:29:09,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 05:29:09,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 05:29:09,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 05:29:09,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 05:29:09,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 05:29:09,784 INFO L87 Difference]: Start difference. First operand 3101 states and 4361 transitions. Second operand has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 05:29:15,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 05:29:15,860 INFO L93 Difference]: Finished difference Result 6055 states and 8546 transitions. [2021-11-04 05:29:15,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 05:29:15,860 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 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 246 [2021-11-04 05:29:15,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 05:29:15,869 INFO L225 Difference]: With dead ends: 6055 [2021-11-04 05:29:15,870 INFO L226 Difference]: Without dead ends: 3129 [2021-11-04 05:29:15,874 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.65ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 05:29:15,874 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 17 mSDsluCounter, 4032 mSDsCounter, 0 mSdLazyCounter, 8075 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4916.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 8075 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.88ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8075 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5965.97ms IncrementalHoareTripleChecker+Time [2021-11-04 05:29:15,875 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 0 Invalid, 8075 Unknown, 0 Unchecked, 7.88ms Time], IncrementalHoareTripleChecker [0 Valid, 8075 Invalid, 0 Unknown, 0 Unchecked, 5965.97ms Time] [2021-11-04 05:29:15,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3129 states. [2021-11-04 05:29:15,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3129 to 3103. [2021-11-04 05:29:15,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3103 states, 3093 states have (on average 1.4106045910119624) internal successors, (4363), 3102 states have internal predecessors, (4363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 05:29:15,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3103 states to 3103 states and 4363 transitions. [2021-11-04 05:29:15,937 INFO L78 Accepts]: Start accepts. Automaton has 3103 states and 4363 transitions. Word has length 246 [2021-11-04 05:29:15,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 05:29:15,938 INFO L470 AbstractCegarLoop]: Abstraction has 3103 states and 4363 transitions. [2021-11-04 05:29:15,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 05:29:15,938 INFO L276 IsEmpty]: Start isEmpty. Operand 3103 states and 4363 transitions. [2021-11-04 05:29:15,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2021-11-04 05:29:15,941 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 05:29:15,941 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 05:29:15,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-04 05:29:15,942 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)] === [2021-11-04 05:29:15,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 05:29:15,943 INFO L85 PathProgramCache]: Analyzing trace with hash -1700392589, now seen corresponding path program 1 times [2021-11-04 05:29:15,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 05:29:15,943 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539764239] [2021-11-04 05:29:15,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 05:29:15,943 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 05:29:16,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 05:29:16,301 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-11-04 05:29:16,301 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 05:29:16,301 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539764239] [2021-11-04 05:29:16,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539764239] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-04 05:29:16,302 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1415178216] [2021-11-04 05:29:16,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 05:29:16,302 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 05:29:16,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 05:29:16,311 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 05:29:16,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-04 05:29:17,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 05:29:17,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 7991 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-04 05:29:17,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 05:29:17,986 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-11-04 05:29:17,986 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-04 05:29:18,461 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-11-04 05:29:18,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1415178216] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-04 05:29:18,462 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-04 05:29:18,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2021-11-04 05:29:18,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676792983] [2021-11-04 05:29:18,462 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-04 05:29:18,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-04 05:29:18,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 05:29:18,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-04 05:29:18,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-04 05:29:18,464 INFO L87 Difference]: Start difference. First operand 3103 states and 4363 transitions. Second operand has 8 states, 8 states have (on average 57.5) internal successors, (460), 8 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 05:29:32,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 05:29:32,304 INFO L93 Difference]: Finished difference Result 6356 states and 9010 transitions. [2021-11-04 05:29:32,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-04 05:29:32,305 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 57.5) internal successors, (460), 8 states have internal predecessors, (460), 0 states have call successors, (0), 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 254 [2021-11-04 05:29:32,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 05:29:32,316 INFO L225 Difference]: With dead ends: 6356 [2021-11-04 05:29:32,316 INFO L226 Difference]: Without dead ends: 3274 [2021-11-04 05:29:32,319 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 510 GetRequests, 504 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 31.48ms TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-04 05:29:32,320 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 34 mSDsluCounter, 15822 mSDsCounter, 0 mSdLazyCounter, 20188 mSolverCounterSat, 346 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11364.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 20534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 26.59ms SdHoareTripleChecker+Time, 346 IncrementalHoareTripleChecker+Valid, 20188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13628.34ms IncrementalHoareTripleChecker+Time [2021-11-04 05:29:32,320 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 0 Invalid, 20534 Unknown, 0 Unchecked, 26.59ms Time], IncrementalHoareTripleChecker [346 Valid, 20188 Invalid, 0 Unknown, 0 Unchecked, 13628.34ms Time] [2021-11-04 05:29:32,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3274 states. [2021-11-04 05:29:32,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3274 to 3248. [2021-11-04 05:29:32,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3248 states, 3238 states have (on average 1.3946880790611489) internal successors, (4516), 3247 states have internal predecessors, (4516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 05:29:32,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3248 states to 3248 states and 4516 transitions. [2021-11-04 05:29:32,385 INFO L78 Accepts]: Start accepts. Automaton has 3248 states and 4516 transitions. Word has length 254 [2021-11-04 05:29:32,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 05:29:32,385 INFO L470 AbstractCegarLoop]: Abstraction has 3248 states and 4516 transitions. [2021-11-04 05:29:32,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 57.5) internal successors, (460), 8 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 05:29:32,386 INFO L276 IsEmpty]: Start isEmpty. Operand 3248 states and 4516 transitions. [2021-11-04 05:29:32,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2021-11-04 05:29:32,390 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 05:29:32,391 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 05:29:32,430 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-04 05:29:32,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 05:29:32,616 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)] === [2021-11-04 05:29:32,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 05:29:32,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1713436877, now seen corresponding path program 2 times [2021-11-04 05:29:32,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 05:29:32,616 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737476257] [2021-11-04 05:29:32,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 05:29:32,617 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 05:29:32,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 05:29:33,113 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-11-04 05:29:33,113 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 05:29:33,114 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737476257] [2021-11-04 05:29:33,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737476257] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 05:29:33,114 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 05:29:33,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 05:29:33,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578458496] [2021-11-04 05:29:33,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 05:29:33,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 05:29:33,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 05:29:33,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 05:29:33,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 05:29:33,116 INFO L87 Difference]: Start difference. First operand 3248 states and 4516 transitions. Second operand has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 05:29:39,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 05:29:39,100 INFO L93 Difference]: Finished difference Result 6007 states and 8441 transitions. [2021-11-04 05:29:39,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 05:29:39,101 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 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 379 [2021-11-04 05:29:39,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 05:29:39,111 INFO L225 Difference]: With dead ends: 6007 [2021-11-04 05:29:39,111 INFO L226 Difference]: Without dead ends: 3033 [2021-11-04 05:29:39,115 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.97ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 05:29:39,116 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3806 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 4261 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4686.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3806 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.83ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5832.02ms IncrementalHoareTripleChecker+Time [2021-11-04 05:29:39,116 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3806 Valid, 0 Invalid, 4262 Unknown, 0 Unchecked, 5.83ms Time], IncrementalHoareTripleChecker [1 Valid, 4261 Invalid, 0 Unknown, 0 Unchecked, 5832.02ms Time] [2021-11-04 05:29:39,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3033 states. [2021-11-04 05:29:39,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3033 to 3033. [2021-11-04 05:29:39,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3033 states, 3023 states have (on average 1.398610651670526) internal successors, (4228), 3032 states have internal predecessors, (4228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 05:29:39,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3033 states to 3033 states and 4228 transitions. [2021-11-04 05:29:39,203 INFO L78 Accepts]: Start accepts. Automaton has 3033 states and 4228 transitions. Word has length 379 [2021-11-04 05:29:39,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 05:29:39,204 INFO L470 AbstractCegarLoop]: Abstraction has 3033 states and 4228 transitions. [2021-11-04 05:29:39,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 05:29:39,204 INFO L276 IsEmpty]: Start isEmpty. Operand 3033 states and 4228 transitions. [2021-11-04 05:29:39,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2021-11-04 05:29:39,209 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 05:29:39,209 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 05:29:39,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-04 05:29:39,210 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)] === [2021-11-04 05:29:39,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 05:29:39,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1743302382, now seen corresponding path program 1 times [2021-11-04 05:29:39,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 05:29:39,211 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823936240] [2021-11-04 05:29:39,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 05:29:39,211 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 05:29:39,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 05:29:39,943 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked. [2021-11-04 05:29:39,943 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 05:29:39,943 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823936240] [2021-11-04 05:29:39,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823936240] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-04 05:29:39,944 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492526478] [2021-11-04 05:29:39,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 05:29:39,944 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 05:29:39,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 05:29:39,952 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 05:29:39,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-04 05:29:41,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 05:29:41,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 8745 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-04 05:29:41,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 05:29:41,779 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked. [2021-11-04 05:29:41,780 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-04 05:29:42,220 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked. [2021-11-04 05:29:42,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1492526478] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-04 05:29:42,221 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-04 05:29:42,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2021-11-04 05:29:42,221 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967100986] [2021-11-04 05:29:42,221 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-04 05:29:42,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-04 05:29:42,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 05:29:42,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-04 05:29:42,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-11-04 05:29:42,223 INFO L87 Difference]: Start difference. First operand 3033 states and 4228 transitions. Second operand has 9 states, 9 states have (on average 32.333333333333336) internal successors, (291), 9 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 05:29:57,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 05:29:57,126 INFO L93 Difference]: Finished difference Result 5687 states and 8014 transitions. [2021-11-04 05:29:57,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-04 05:29:57,127 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 32.333333333333336) internal successors, (291), 9 states have internal predecessors, (291), 0 states have call successors, (0), 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 381 [2021-11-04 05:29:57,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 05:29:57,135 INFO L225 Difference]: With dead ends: 5687 [2021-11-04 05:29:57,135 INFO L226 Difference]: Without dead ends: 3089 [2021-11-04 05:29:57,139 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 765 GetRequests, 758 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 21.90ms TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-11-04 05:29:57,139 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 112 mSDsluCounter, 20165 mSDsCounter, 0 mSdLazyCounter, 24230 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12343.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 24236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 27.83ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 24230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14679.50ms IncrementalHoareTripleChecker+Time [2021-11-04 05:29:57,140 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 0 Invalid, 24236 Unknown, 0 Unchecked, 27.83ms Time], IncrementalHoareTripleChecker [6 Valid, 24230 Invalid, 0 Unknown, 0 Unchecked, 14679.50ms Time] [2021-11-04 05:29:57,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3089 states. [2021-11-04 05:29:57,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3089 to 3089. [2021-11-04 05:29:57,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3089 states, 3079 states have (on average 1.3965573238064306) internal successors, (4300), 3088 states have internal predecessors, (4300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 05:29:57,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3089 states to 3089 states and 4300 transitions. [2021-11-04 05:29:57,222 INFO L78 Accepts]: Start accepts. Automaton has 3089 states and 4300 transitions. Word has length 381 [2021-11-04 05:29:57,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 05:29:57,223 INFO L470 AbstractCegarLoop]: Abstraction has 3089 states and 4300 transitions. [2021-11-04 05:29:57,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 32.333333333333336) internal successors, (291), 9 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 05:29:57,224 INFO L276 IsEmpty]: Start isEmpty. Operand 3089 states and 4300 transitions. [2021-11-04 05:29:57,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2021-11-04 05:29:57,229 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 05:29:57,230 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 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] [2021-11-04 05:29:57,269 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-04 05:29:57,443 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,SelfDestructingSolverStorable9 [2021-11-04 05:29:57,443 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)] === [2021-11-04 05:29:57,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 05:29:57,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1615619150, now seen corresponding path program 2 times [2021-11-04 05:29:57,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 05:29:57,444 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122828118] [2021-11-04 05:29:57,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 05:29:57,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 05:29:57,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 05:29:58,124 INFO L134 CoverageAnalysis]: Checked inductivity of 518 backedges. 2 proven. 126 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked. [2021-11-04 05:29:58,124 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 05:29:58,125 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122828118] [2021-11-04 05:29:58,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122828118] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-04 05:29:58,125 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1781539106] [2021-11-04 05:29:58,125 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-04 05:29:58,125 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 05:29:58,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 05:29:58,126 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 05:29:58,128 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-04 05:30:00,949 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-04 05:30:00,950 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-04 05:30:00,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 7325 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-04 05:30:01,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 05:30:01,588 INFO L134 CoverageAnalysis]: Checked inductivity of 518 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 518 trivial. 0 not checked. [2021-11-04 05:30:01,588 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 05:30:01,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1781539106] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 05:30:01,588 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-04 05:30:01,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-11-04 05:30:01,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065793748] [2021-11-04 05:30:01,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 05:30:01,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 05:30:01,590 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 05:30:01,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 05:30:01,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-11-04 05:30:01,591 INFO L87 Difference]: Start difference. First operand 3089 states and 4300 transitions. Second operand has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 05:30:11,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 05:30:11,944 INFO L93 Difference]: Finished difference Result 5478 states and 7740 transitions. [2021-11-04 05:30:11,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 05:30:11,945 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 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 413 [2021-11-04 05:30:11,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 05:30:11,954 INFO L225 Difference]: With dead ends: 5478 [2021-11-04 05:30:11,954 INFO L226 Difference]: Without dead ends: 5474 [2021-11-04 05:30:11,955 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 413 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 31.34ms TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-11-04 05:30:11,956 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3454 mSDsluCounter, 3986 mSDsCounter, 0 mSdLazyCounter, 11455 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8286.59ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3454 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 11457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.31ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10134.38ms IncrementalHoareTripleChecker+Time [2021-11-04 05:30:11,956 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3454 Valid, 0 Invalid, 11457 Unknown, 0 Unchecked, 12.31ms Time], IncrementalHoareTripleChecker [2 Valid, 11455 Invalid, 0 Unknown, 0 Unchecked, 10134.38ms Time] [2021-11-04 05:30:11,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5474 states. [2021-11-04 05:30:12,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5474 to 3085. [2021-11-04 05:30:12,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3085 states, 3077 states have (on average 1.3961650958726033) internal successors, (4296), 3084 states have internal predecessors, (4296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 05:30:12,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3085 states to 3085 states and 4296 transitions. [2021-11-04 05:30:12,050 INFO L78 Accepts]: Start accepts. Automaton has 3085 states and 4296 transitions. Word has length 413 [2021-11-04 05:30:12,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 05:30:12,051 INFO L470 AbstractCegarLoop]: Abstraction has 3085 states and 4296 transitions. [2021-11-04 05:30:12,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 05:30:12,052 INFO L276 IsEmpty]: Start isEmpty. Operand 3085 states and 4296 transitions. [2021-11-04 05:30:12,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2021-11-04 05:30:12,054 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 05:30:12,055 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 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] [2021-11-04 05:30:12,094 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-04 05:30:12,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 05:30:12,272 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-04 05:30:12,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 05:30:12,272 INFO L85 PathProgramCache]: Analyzing trace with hash 1836580692, now seen corresponding path program 1 times [2021-11-04 05:30:12,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 05:30:12,272 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94198164] [2021-11-04 05:30:12,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 05:30:12,273 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 05:30:12,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 05:30:12,906 INFO L134 CoverageAnalysis]: Checked inductivity of 518 backedges. 2 proven. 126 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked. [2021-11-04 05:30:12,906 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 05:30:12,907 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94198164] [2021-11-04 05:30:12,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94198164] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-04 05:30:12,907 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1803304416] [2021-11-04 05:30:12,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 05:30:12,907 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 05:30:12,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 05:30:12,909 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 05:30:12,938 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-04 05:30:14,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 05:30:14,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 8957 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-04 05:30:14,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 05:30:14,769 INFO L134 CoverageAnalysis]: Checked inductivity of 518 backedges. 2 proven. 126 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked. [2021-11-04 05:30:14,769 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-04 05:30:15,282 INFO L134 CoverageAnalysis]: Checked inductivity of 518 backedges. 2 proven. 126 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked. [2021-11-04 05:30:15,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1803304416] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-04 05:30:15,282 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-04 05:30:15,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2021-11-04 05:30:15,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343038081] [2021-11-04 05:30:15,283 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-04 05:30:15,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-04 05:30:15,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 05:30:15,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-04 05:30:15,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-11-04 05:30:15,284 INFO L87 Difference]: Start difference. First operand 3085 states and 4296 transitions. Second operand has 12 states, 12 states have (on average 27.25) internal successors, (327), 12 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 05:30:24,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 05:30:24,264 INFO L93 Difference]: Finished difference Result 5721 states and 8059 transitions. [2021-11-04 05:30:24,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-04 05:30:24,265 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 27.25) internal successors, (327), 12 states have internal predecessors, (327), 0 states have call successors, (0), 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 417 [2021-11-04 05:30:24,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 05:30:24,272 INFO L225 Difference]: With dead ends: 5721 [2021-11-04 05:30:24,272 INFO L226 Difference]: Without dead ends: 3127 [2021-11-04 05:30:24,275 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 841 GetRequests, 831 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 42.91ms TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-11-04 05:30:24,275 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 293 mSDsluCounter, 8157 mSDsCounter, 0 mSdLazyCounter, 12221 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7301.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 12226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.79ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 12221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8788.66ms IncrementalHoareTripleChecker+Time [2021-11-04 05:30:24,276 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [293 Valid, 0 Invalid, 12226 Unknown, 0 Unchecked, 13.79ms Time], IncrementalHoareTripleChecker [5 Valid, 12221 Invalid, 0 Unknown, 0 Unchecked, 8788.66ms Time] [2021-11-04 05:30:24,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3127 states. [2021-11-04 05:30:24,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3127 to 3127. [2021-11-04 05:30:24,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3127 states, 3119 states have (on average 1.3946777813401732) internal successors, (4350), 3126 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 05:30:24,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3127 states to 3127 states and 4350 transitions. [2021-11-04 05:30:24,372 INFO L78 Accepts]: Start accepts. Automaton has 3127 states and 4350 transitions. Word has length 417 [2021-11-04 05:30:24,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 05:30:24,372 INFO L470 AbstractCegarLoop]: Abstraction has 3127 states and 4350 transitions. [2021-11-04 05:30:24,373 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 27.25) internal successors, (327), 12 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 05:30:24,373 INFO L276 IsEmpty]: Start isEmpty. Operand 3127 states and 4350 transitions. [2021-11-04 05:30:24,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2021-11-04 05:30:24,378 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 05:30:24,378 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] [2021-11-04 05:30:24,420 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-11-04 05:30:24,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 05:30:24,592 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-04 05:30:24,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 05:30:24,593 INFO L85 PathProgramCache]: Analyzing trace with hash -216815780, now seen corresponding path program 2 times [2021-11-04 05:30:24,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 05:30:24,593 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882041533] [2021-11-04 05:30:24,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 05:30:24,593 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 05:30:24,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 05:30:25,221 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 689 trivial. 0 not checked. [2021-11-04 05:30:25,221 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 05:30:25,221 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882041533] [2021-11-04 05:30:25,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882041533] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 05:30:25,222 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 05:30:25,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 05:30:25,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140427219] [2021-11-04 05:30:25,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 05:30:25,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 05:30:25,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 05:30:25,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 05:30:25,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 05:30:25,224 INFO L87 Difference]: Start difference. First operand 3127 states and 4350 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) [2021-11-04 05:30:35,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 05:30:35,257 INFO L93 Difference]: Finished difference Result 5476 states and 7728 transitions. [2021-11-04 05:30:35,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 05:30:35,258 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 441 [2021-11-04 05:30:35,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 05:30:35,269 INFO L225 Difference]: With dead ends: 5476 [2021-11-04 05:30:35,270 INFO L226 Difference]: Without dead ends: 5464 [2021-11-04 05:30:35,271 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.66ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 05:30:35,272 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3564 mSDsluCounter, 3814 mSDsCounter, 0 mSdLazyCounter, 11218 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7925.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3564 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 11232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.19ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 11218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9787.51ms IncrementalHoareTripleChecker+Time [2021-11-04 05:30:35,272 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3564 Valid, 0 Invalid, 11232 Unknown, 0 Unchecked, 12.19ms Time], IncrementalHoareTripleChecker [14 Valid, 11218 Invalid, 0 Unknown, 0 Unchecked, 9787.51ms Time] [2021-11-04 05:30:35,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5464 states. [2021-11-04 05:30:35,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5464 to 3115. [2021-11-04 05:30:35,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3115 states, 3113 states have (on average 1.393511082557019) internal successors, (4338), 3114 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) [2021-11-04 05:30:35,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3115 states to 3115 states and 4338 transitions. [2021-11-04 05:30:35,430 INFO L78 Accepts]: Start accepts. Automaton has 3115 states and 4338 transitions. Word has length 441 [2021-11-04 05:30:35,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 05:30:35,430 INFO L470 AbstractCegarLoop]: Abstraction has 3115 states and 4338 transitions. [2021-11-04 05:30:35,431 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) [2021-11-04 05:30:35,431 INFO L276 IsEmpty]: Start isEmpty. Operand 3115 states and 4338 transitions. [2021-11-04 05:30:35,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2021-11-04 05:30:35,434 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 05:30:35,434 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] [2021-11-04 05:30:35,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-04 05:30:35,435 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)] === [2021-11-04 05:30:35,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 05:30:35,435 INFO L85 PathProgramCache]: Analyzing trace with hash -623239222, now seen corresponding path program 1 times [2021-11-04 05:30:35,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 05:30:35,436 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357542110] [2021-11-04 05:30:35,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 05:30:35,437 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 05:30:35,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 05:30:36,108 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 687 trivial. 0 not checked. [2021-11-04 05:30:36,108 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 05:30:36,108 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357542110] [2021-11-04 05:30:36,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357542110] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 05:30:36,109 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 05:30:36,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-04 05:30:36,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477683581] [2021-11-04 05:30:36,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 05:30:36,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-04 05:30:36,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 05:30:36,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-04 05:30:36,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-04 05:30:36,111 INFO L87 Difference]: Start difference. First operand 3115 states and 4338 transitions. Second operand has 7 states, 7 states have (on average 37.857142857142854) internal successors, (265), 7 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 05:30:54,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 05:30:54,184 INFO L93 Difference]: Finished difference Result 8711 states and 12285 transitions. [2021-11-04 05:30:54,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-04 05:30:54,184 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 37.857142857142854) internal successors, (265), 7 states have internal predecessors, (265), 0 states have call successors, (0), 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 446 [2021-11-04 05:30:54,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 05:30:54,196 INFO L225 Difference]: With dead ends: 8711 [2021-11-04 05:30:54,196 INFO L226 Difference]: Without dead ends: 5906 [2021-11-04 05:30:54,202 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 68.26ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-11-04 05:30:54,203 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 4030 mSDsluCounter, 19434 mSDsCounter, 0 mSdLazyCounter, 23999 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14649.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4030 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 24006 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 39.88ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 23999 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17643.70ms IncrementalHoareTripleChecker+Time [2021-11-04 05:30:54,203 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4030 Valid, 0 Invalid, 24006 Unknown, 0 Unchecked, 39.88ms Time], IncrementalHoareTripleChecker [7 Valid, 23999 Invalid, 0 Unknown, 0 Unchecked, 17643.70ms Time] [2021-11-04 05:30:54,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5906 states. [2021-11-04 05:30:54,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5906 to 3115. [2021-11-04 05:30:54,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3115 states, 3113 states have (on average 1.3931898490202377) internal successors, (4337), 3114 states have internal predecessors, (4337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 05:30:54,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3115 states to 3115 states and 4337 transitions. [2021-11-04 05:30:54,389 INFO L78 Accepts]: Start accepts. Automaton has 3115 states and 4337 transitions. Word has length 446 [2021-11-04 05:30:54,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 05:30:54,390 INFO L470 AbstractCegarLoop]: Abstraction has 3115 states and 4337 transitions. [2021-11-04 05:30:54,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 37.857142857142854) internal successors, (265), 7 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 05:30:54,390 INFO L276 IsEmpty]: Start isEmpty. Operand 3115 states and 4337 transitions. [2021-11-04 05:30:54,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2021-11-04 05:30:54,393 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 05:30:54,394 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] [2021-11-04 05:30:54,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-04 05:30:54,394 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)] === [2021-11-04 05:30:54,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 05:30:54,395 INFO L85 PathProgramCache]: Analyzing trace with hash -523066002, now seen corresponding path program 1 times [2021-11-04 05:30:54,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 05:30:54,395 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483770976] [2021-11-04 05:30:54,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 05:30:54,395 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 05:30:54,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 05:30:54,956 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 687 trivial. 0 not checked. [2021-11-04 05:30:54,957 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 05:30:54,957 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483770976] [2021-11-04 05:30:54,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483770976] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 05:30:54,957 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 05:30:54,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-04 05:30:54,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239704357] [2021-11-04 05:30:54,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 05:30:54,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-04 05:30:54,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 05:30:54,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-04 05:30:54,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-04 05:30:54,959 INFO L87 Difference]: Start difference. First operand 3115 states and 4337 transitions. Second operand has 5 states, 5 states have (on average 53.4) internal successors, (267), 5 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 05:31:12,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 05:31:12,814 INFO L93 Difference]: Finished difference Result 8642 states and 12194 transitions. [2021-11-04 05:31:12,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-04 05:31:12,815 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 53.4) internal successors, (267), 5 states have internal predecessors, (267), 0 states have call successors, (0), 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 448 [2021-11-04 05:31:12,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 05:31:12,822 INFO L225 Difference]: With dead ends: 8642 [2021-11-04 05:31:12,822 INFO L226 Difference]: Without dead ends: 5848 [2021-11-04 05:31:12,827 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 36.18ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-04 05:31:12,827 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 7488 mSDsluCounter, 15748 mSDsCounter, 0 mSdLazyCounter, 23502 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14433.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7488 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 23504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 44.47ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17419.71ms IncrementalHoareTripleChecker+Time [2021-11-04 05:31:12,828 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7488 Valid, 0 Invalid, 23504 Unknown, 0 Unchecked, 44.47ms Time], IncrementalHoareTripleChecker [2 Valid, 23502 Invalid, 0 Unknown, 0 Unchecked, 17419.71ms Time] [2021-11-04 05:31:12,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5848 states. [2021-11-04 05:31:12,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5848 to 3115. [2021-11-04 05:31:12,962 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) [2021-11-04 05:31:12,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3115 states to 3115 states and 4336 transitions. [2021-11-04 05:31:12,964 INFO L78 Accepts]: Start accepts. Automaton has 3115 states and 4336 transitions. Word has length 448 [2021-11-04 05:31:12,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 05:31:12,965 INFO L470 AbstractCegarLoop]: Abstraction has 3115 states and 4336 transitions. [2021-11-04 05:31:12,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 53.4) internal successors, (267), 5 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 05:31:12,965 INFO L276 IsEmpty]: Start isEmpty. Operand 3115 states and 4336 transitions. [2021-11-04 05:31:12,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 451 [2021-11-04 05:31:12,994 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 05:31:12,994 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] [2021-11-04 05:31:12,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-04 05:31:12,994 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)] === [2021-11-04 05:31:12,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 05:31:12,995 INFO L85 PathProgramCache]: Analyzing trace with hash 459833866, now seen corresponding path program 1 times [2021-11-04 05:31:12,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 05:31:12,995 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739746053] [2021-11-04 05:31:12,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 05:31:12,995 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 05:31:18,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 05:39:05,841 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 687 trivial. 0 not checked. [2021-11-04 05:39:05,841 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 05:39:05,841 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739746053] [2021-11-04 05:39:05,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739746053] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 05:39:05,842 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 05:39:05,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [85] imperfect sequences [] total 85 [2021-11-04 05:39:05,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838864609] [2021-11-04 05:39:05,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 05:39:05,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2021-11-04 05:39:05,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 05:39:05,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2021-11-04 05:39:05,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2592, Invalid=4718, Unknown=0, NotChecked=0, Total=7310 [2021-11-04 05:39:05,847 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) [2021-11-04 05:39:08,986 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:39:11,551 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:39:15,753 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:39:17,843 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:39:19,871 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:39:21,975 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:39:24,653 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:39:27,177 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:39:29,290 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:41:04,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 05:41:04,644 INFO L93 Difference]: Finished difference Result 8614 states and 12147 transitions. [2021-11-04 05:41:04,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-04 05:41:04,645 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 [2021-11-04 05:41:04,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 05:41:04,652 INFO L225 Difference]: With dead ends: 8614 [2021-11-04 05:41:04,653 INFO L226 Difference]: Without dead ends: 5816 [2021-11-04 05:41:04,658 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 128 SyntacticMatches, 39 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1720 ImplicationChecksByTransitivity, 12766.23ms TimeCoverageRelationStatistics Valid=2986, Invalid=5204, Unknown=0, NotChecked=0, Total=8190 [2021-11-04 05:41:04,659 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 4327 mSDsluCounter, 77258 mSDsCounter, 0 mSdLazyCounter, 105993 mSolverCounterSat, 432 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 101306.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4327 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 106432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 254.73ms SdHoareTripleChecker+Time, 432 IncrementalHoareTripleChecker+Valid, 105993 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 115564.34ms IncrementalHoareTripleChecker+Time [2021-11-04 05:41:04,659 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4327 Valid, 0 Invalid, 106432 Unknown, 0 Unchecked, 254.73ms Time], IncrementalHoareTripleChecker [432 Valid, 105993 Invalid, 7 Unknown, 0 Unchecked, 115564.34ms Time] [2021-11-04 05:41:04,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5816 states. [2021-11-04 05:41:04,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5816 to 3117. [2021-11-04 05:41:04,824 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) [2021-11-04 05:41:04,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3117 states to 3117 states and 4338 transitions. [2021-11-04 05:41:04,827 INFO L78 Accepts]: Start accepts. Automaton has 3117 states and 4338 transitions. Word has length 450 [2021-11-04 05:41:04,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 05:41:04,827 INFO L470 AbstractCegarLoop]: Abstraction has 3117 states and 4338 transitions. [2021-11-04 05:41:04,828 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) [2021-11-04 05:41:04,828 INFO L276 IsEmpty]: Start isEmpty. Operand 3117 states and 4338 transitions. [2021-11-04 05:41:04,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 453 [2021-11-04 05:41:04,830 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 05:41:04,831 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] [2021-11-04 05:41:04,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-04 05:41:04,831 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-04 05:41:04,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 05:41:04,832 INFO L85 PathProgramCache]: Analyzing trace with hash -592117851, now seen corresponding path program 1 times [2021-11-04 05:41:04,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 05:41:04,832 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199722733] [2021-11-04 05:41:04,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 05:41:04,832 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 05:41:09,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Killed by 15