./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/openssl/s3_srvr.blast.10.i.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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/openssl/s3_srvr.blast.10.i.cil-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 06e766f2b0fb57f78717a4ab927a7f5c398a4eef6e5769d710eaeddfb253f7dd --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 11:17:13,311 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 11:17:13,312 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 11:17:13,357 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 11:17:13,357 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 11:17:13,359 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 11:17:13,362 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 11:17:13,366 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 11:17:13,368 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 11:17:13,372 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 11:17:13,373 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 11:17:13,374 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 11:17:13,374 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 11:17:13,376 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 11:17:13,377 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 11:17:13,378 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 11:17:13,379 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 11:17:13,380 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 11:17:13,383 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 11:17:13,385 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 11:17:13,387 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 11:17:13,388 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 11:17:13,389 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 11:17:13,389 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 11:17:13,390 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 11:17:13,394 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 11:17:13,394 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 11:17:13,394 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 11:17:13,395 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 11:17:13,395 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 11:17:13,396 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 11:17:13,396 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 11:17:13,398 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 11:17:13,398 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 11:17:13,398 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 11:17:13,399 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 11:17:13,399 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 11:17:13,400 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 11:17:13,400 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 11:17:13,400 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 11:17:13,401 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 11:17:13,402 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 11:17:13,403 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 11:17:13,427 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 11:17:13,427 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 11:17:13,427 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 11:17:13,428 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 11:17:13,428 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 11:17:13,428 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 11:17:13,429 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 11:17:13,429 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 11:17:13,429 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 11:17:13,430 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 11:17:13,430 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 11:17:13,430 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 11:17:13,430 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 11:17:13,430 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 11:17:13,430 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 11:17:13,430 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 11:17:13,431 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 11:17:13,431 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 11:17:13,431 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 11:17:13,431 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 11:17:13,431 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 11:17:13,431 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 11:17:13,431 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 11:17:13,432 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 11:17:13,432 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 11:17:13,432 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 11:17:13,432 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 11:17:13,432 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 11:17:13,432 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 11:17:13,433 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 11:17:13,433 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 11:17:13,433 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 11:17:13,433 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 11:17:13,433 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 06e766f2b0fb57f78717a4ab927a7f5c398a4eef6e5769d710eaeddfb253f7dd [2022-07-22 11:17:13,635 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 11:17:13,659 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 11:17:13,661 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 11:17:13,661 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 11:17:13,662 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 11:17:13,663 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/openssl/s3_srvr.blast.10.i.cil-2.c [2022-07-22 11:17:13,711 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec9b3177b/d3a70b274815408b80db12882b2dc90f/FLAGb266dc87c [2022-07-22 11:17:14,196 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 11:17:14,196 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/openssl/s3_srvr.blast.10.i.cil-2.c [2022-07-22 11:17:14,214 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec9b3177b/d3a70b274815408b80db12882b2dc90f/FLAGb266dc87c [2022-07-22 11:17:14,231 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec9b3177b/d3a70b274815408b80db12882b2dc90f [2022-07-22 11:17:14,233 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 11:17:14,235 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 11:17:14,236 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 11:17:14,236 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 11:17:14,238 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 11:17:14,239 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 11:17:14" (1/1) ... [2022-07-22 11:17:14,240 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c2c1dd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:17:14, skipping insertion in model container [2022-07-22 11:17:14,240 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 11:17:14" (1/1) ... [2022-07-22 11:17:14,245 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 11:17:14,289 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 11:17:14,609 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/openssl/s3_srvr.blast.10.i.cil-2.c[73311,73324] [2022-07-22 11:17:14,615 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 11:17:14,623 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 11:17:14,684 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/openssl/s3_srvr.blast.10.i.cil-2.c[73311,73324] [2022-07-22 11:17:14,686 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 11:17:14,702 INFO L208 MainTranslator]: Completed translation [2022-07-22 11:17:14,702 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:17:14 WrapperNode [2022-07-22 11:17:14,702 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 11:17:14,703 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 11:17:14,703 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 11:17:14,703 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 11:17:14,708 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:17:14" (1/1) ... [2022-07-22 11:17:14,733 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:17:14" (1/1) ... [2022-07-22 11:17:14,776 INFO L137 Inliner]: procedures = 31, calls = 223, calls flagged for inlining = 7, calls inlined = 3, statements flattened = 787 [2022-07-22 11:17:14,776 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 11:17:14,777 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 11:17:14,777 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 11:17:14,777 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 11:17:14,783 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:17:14" (1/1) ... [2022-07-22 11:17:14,783 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:17:14" (1/1) ... [2022-07-22 11:17:14,789 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:17:14" (1/1) ... [2022-07-22 11:17:14,790 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:17:14" (1/1) ... [2022-07-22 11:17:14,814 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:17:14" (1/1) ... [2022-07-22 11:17:14,819 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:17:14" (1/1) ... [2022-07-22 11:17:14,830 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:17:14" (1/1) ... [2022-07-22 11:17:14,833 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 11:17:14,835 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 11:17:14,835 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 11:17:14,835 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 11:17:14,837 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:17:14" (1/1) ... [2022-07-22 11:17:14,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 11:17:14,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 11:17:14,872 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) [2022-07-22 11:17:14,907 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 [2022-07-22 11:17:14,946 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 11:17:14,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-22 11:17:14,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 11:17:14,947 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-22 11:17:14,947 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-22 11:17:14,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 11:17:14,947 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-22 11:17:14,947 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 11:17:14,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 11:17:15,110 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 11:17:15,111 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 11:17:15,127 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-22 11:17:17,484 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2022-07-22 11:17:17,485 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2022-07-22 11:17:17,485 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 11:17:17,490 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 11:17:17,490 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-22 11:17:17,491 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 11:17:17 BoogieIcfgContainer [2022-07-22 11:17:17,491 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 11:17:17,492 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 11:17:17,493 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 11:17:17,495 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 11:17:17,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 11:17:14" (1/3) ... [2022-07-22 11:17:17,495 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5589ece and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 11:17:17, skipping insertion in model container [2022-07-22 11:17:17,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:17:14" (2/3) ... [2022-07-22 11:17:17,496 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5589ece and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 11:17:17, skipping insertion in model container [2022-07-22 11:17:17,496 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 11:17:17" (3/3) ... [2022-07-22 11:17:17,497 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.10.i.cil-2.c [2022-07-22 11:17:17,505 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 11:17:17,506 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 11:17:17,542 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 11:17:17,547 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@211f2cd9, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@196e0929 [2022-07-22 11:17:17,547 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 11:17:17,550 INFO L276 IsEmpty]: Start isEmpty. Operand has 147 states, 145 states have (on average 1.710344827586207) internal successors, (248), 146 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:17,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-07-22 11:17:17,556 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:17:17,557 INFO L195 NwaCegarLoop]: 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] [2022-07-22 11:17:17,557 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:17:17,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:17:17,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1692155939, now seen corresponding path program 1 times [2022-07-22 11:17:17,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:17:17,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837652376] [2022-07-22 11:17:17,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:17:17,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:17:17,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:17:17,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 11:17:17,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:17:17,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837652376] [2022-07-22 11:17:17,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837652376] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:17:17,885 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:17:17,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:17:17,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810969512] [2022-07-22 11:17:17,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:17:17,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:17:17,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:17:17,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:17:17,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:17:17,913 INFO L87 Difference]: Start difference. First operand has 147 states, 145 states have (on average 1.710344827586207) internal successors, (248), 146 states have internal predecessors, (248), 0 states have call successors, (0), 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 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:18,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:17:18,563 INFO L93 Difference]: Finished difference Result 412 states and 698 transitions. [2022-07-22 11:17:18,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:17:18,566 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2022-07-22 11:17:18,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:17:18,576 INFO L225 Difference]: With dead ends: 412 [2022-07-22 11:17:18,576 INFO L226 Difference]: Without dead ends: 250 [2022-07-22 11:17:18,579 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 11:17:18,582 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 150 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-22 11:17:18,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 423 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-22 11:17:18,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2022-07-22 11:17:18,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 174. [2022-07-22 11:17:18,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 173 states have (on average 1.6011560693641618) internal successors, (277), 173 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:18,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 277 transitions. [2022-07-22 11:17:18,625 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 277 transitions. Word has length 43 [2022-07-22 11:17:18,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:17:18,625 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 277 transitions. [2022-07-22 11:17:18,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:18,626 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 277 transitions. [2022-07-22 11:17:18,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-07-22 11:17:18,627 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:17:18,627 INFO L195 NwaCegarLoop]: 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] [2022-07-22 11:17:18,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 11:17:18,628 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:17:18,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:17:18,628 INFO L85 PathProgramCache]: Analyzing trace with hash 910693922, now seen corresponding path program 1 times [2022-07-22 11:17:18,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:17:18,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197519039] [2022-07-22 11:17:18,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:17:18,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:17:18,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:17:18,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 11:17:18,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:17:18,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197519039] [2022-07-22 11:17:18,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197519039] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:17:18,747 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:17:18,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:17:18,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491851982] [2022-07-22 11:17:18,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:17:18,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:17:18,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:17:18,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:17:18,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:17:18,749 INFO L87 Difference]: Start difference. First operand 174 states and 277 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:19,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:17:19,191 INFO L93 Difference]: Finished difference Result 366 states and 581 transitions. [2022-07-22 11:17:19,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:17:19,192 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2022-07-22 11:17:19,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:17:19,193 INFO L225 Difference]: With dead ends: 366 [2022-07-22 11:17:19,193 INFO L226 Difference]: Without dead ends: 202 [2022-07-22 11:17:19,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 11:17:19,194 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 22 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-22 11:17:19,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 451 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-22 11:17:19,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2022-07-22 11:17:19,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 185. [2022-07-22 11:17:19,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 184 states have (on average 1.608695652173913) internal successors, (296), 184 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:19,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 296 transitions. [2022-07-22 11:17:19,202 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 296 transitions. Word has length 44 [2022-07-22 11:17:19,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:17:19,202 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 296 transitions. [2022-07-22 11:17:19,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:19,202 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 296 transitions. [2022-07-22 11:17:19,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-07-22 11:17:19,204 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:17:19,204 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 11:17:19,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 11:17:19,204 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:17:19,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:17:19,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1232633144, now seen corresponding path program 1 times [2022-07-22 11:17:19,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:17:19,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138764315] [2022-07-22 11:17:19,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:17:19,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:17:19,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:17:19,359 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 11:17:19,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:17:19,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138764315] [2022-07-22 11:17:19,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138764315] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:17:19,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:17:19,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:17:19,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487351919] [2022-07-22 11:17:19,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:17:19,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:17:19,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:17:19,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:17:19,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:17:19,362 INFO L87 Difference]: Start difference. First operand 185 states and 296 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:20,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:17:20,522 INFO L93 Difference]: Finished difference Result 503 states and 809 transitions. [2022-07-22 11:17:20,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:17:20,522 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 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 57 [2022-07-22 11:17:20,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:17:20,524 INFO L225 Difference]: With dead ends: 503 [2022-07-22 11:17:20,525 INFO L226 Difference]: Without dead ends: 339 [2022-07-22 11:17:20,526 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 11:17:20,528 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 139 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 588 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-22 11:17:20,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 588 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-22 11:17:20,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2022-07-22 11:17:20,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 217. [2022-07-22 11:17:20,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 216 states have (on average 1.6064814814814814) internal successors, (347), 216 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:20,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 347 transitions. [2022-07-22 11:17:20,558 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 347 transitions. Word has length 57 [2022-07-22 11:17:20,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:17:20,559 INFO L495 AbstractCegarLoop]: Abstraction has 217 states and 347 transitions. [2022-07-22 11:17:20,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:20,559 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 347 transitions. [2022-07-22 11:17:20,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-07-22 11:17:20,561 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:17:20,561 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 11:17:20,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 11:17:20,561 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:17:20,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:17:20,562 INFO L85 PathProgramCache]: Analyzing trace with hash -1458561385, now seen corresponding path program 1 times [2022-07-22 11:17:20,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:17:20,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562690010] [2022-07-22 11:17:20,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:17:20,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:17:20,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:17:20,701 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 11:17:20,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:17:20,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562690010] [2022-07-22 11:17:20,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562690010] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:17:20,702 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:17:20,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:17:20,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364946598] [2022-07-22 11:17:20,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:17:20,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:17:20,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:17:20,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:17:20,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:17:20,703 INFO L87 Difference]: Start difference. First operand 217 states and 347 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:21,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:17:21,470 INFO L93 Difference]: Finished difference Result 511 states and 812 transitions. [2022-07-22 11:17:21,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:17:21,471 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2022-07-22 11:17:21,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:17:21,473 INFO L225 Difference]: With dead ends: 511 [2022-07-22 11:17:21,473 INFO L226 Difference]: Without dead ends: 315 [2022-07-22 11:17:21,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 11:17:21,474 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 144 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 11:17:21,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 316 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-22 11:17:21,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2022-07-22 11:17:21,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 217. [2022-07-22 11:17:21,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 216 states have (on average 1.587962962962963) internal successors, (343), 216 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:21,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 343 transitions. [2022-07-22 11:17:21,480 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 343 transitions. Word has length 58 [2022-07-22 11:17:21,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:17:21,480 INFO L495 AbstractCegarLoop]: Abstraction has 217 states and 343 transitions. [2022-07-22 11:17:21,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:21,480 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 343 transitions. [2022-07-22 11:17:21,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-07-22 11:17:21,481 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:17:21,481 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:17:21,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 11:17:21,482 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:17:21,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:17:21,482 INFO L85 PathProgramCache]: Analyzing trace with hash 1788895107, now seen corresponding path program 1 times [2022-07-22 11:17:21,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:17:21,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589015766] [2022-07-22 11:17:21,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:17:21,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:17:21,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:17:21,570 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 11:17:21,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:17:21,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589015766] [2022-07-22 11:17:21,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589015766] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:17:21,570 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:17:21,571 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:17:21,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62829772] [2022-07-22 11:17:21,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:17:21,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:17:21,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:17:21,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:17:21,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:17:21,572 INFO L87 Difference]: Start difference. First operand 217 states and 343 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:22,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:17:22,426 INFO L93 Difference]: Finished difference Result 429 states and 675 transitions. [2022-07-22 11:17:22,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:17:22,427 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2022-07-22 11:17:22,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:17:22,427 INFO L225 Difference]: With dead ends: 429 [2022-07-22 11:17:22,428 INFO L226 Difference]: Without dead ends: 233 [2022-07-22 11:17:22,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 11:17:22,428 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 26 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-22 11:17:22,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 455 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-22 11:17:22,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2022-07-22 11:17:22,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 217. [2022-07-22 11:17:22,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 216 states have (on average 1.5833333333333333) internal successors, (342), 216 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:22,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 342 transitions. [2022-07-22 11:17:22,454 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 342 transitions. Word has length 58 [2022-07-22 11:17:22,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:17:22,455 INFO L495 AbstractCegarLoop]: Abstraction has 217 states and 342 transitions. [2022-07-22 11:17:22,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:22,455 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 342 transitions. [2022-07-22 11:17:22,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-07-22 11:17:22,456 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:17:22,456 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 11:17:22,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 11:17:22,457 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:17:22,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:17:22,457 INFO L85 PathProgramCache]: Analyzing trace with hash 653028812, now seen corresponding path program 1 times [2022-07-22 11:17:22,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:17:22,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455327260] [2022-07-22 11:17:22,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:17:22,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:17:22,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:17:22,523 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 11:17:22,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:17:22,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455327260] [2022-07-22 11:17:22,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455327260] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:17:22,524 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:17:22,524 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:17:22,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730141632] [2022-07-22 11:17:22,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:17:22,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:17:22,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:17:22,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:17:22,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:17:22,526 INFO L87 Difference]: Start difference. First operand 217 states and 342 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:23,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:17:23,008 INFO L93 Difference]: Finished difference Result 428 states and 673 transitions. [2022-07-22 11:17:23,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:17:23,008 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2022-07-22 11:17:23,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:17:23,009 INFO L225 Difference]: With dead ends: 428 [2022-07-22 11:17:23,009 INFO L226 Difference]: Without dead ends: 232 [2022-07-22 11:17:23,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 11:17:23,010 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 19 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-22 11:17:23,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 457 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-22 11:17:23,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2022-07-22 11:17:23,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 217. [2022-07-22 11:17:23,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 216 states have (on average 1.5787037037037037) internal successors, (341), 216 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:23,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 341 transitions. [2022-07-22 11:17:23,014 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 341 transitions. Word has length 58 [2022-07-22 11:17:23,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:17:23,014 INFO L495 AbstractCegarLoop]: Abstraction has 217 states and 341 transitions. [2022-07-22 11:17:23,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:23,015 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 341 transitions. [2022-07-22 11:17:23,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-07-22 11:17:23,015 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:17:23,015 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 11:17:23,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 11:17:23,015 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:17:23,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:17:23,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1973882124, now seen corresponding path program 1 times [2022-07-22 11:17:23,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:17:23,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036023547] [2022-07-22 11:17:23,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:17:23,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:17:23,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:17:23,114 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 11:17:23,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:17:23,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036023547] [2022-07-22 11:17:23,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036023547] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:17:23,115 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:17:23,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:17:23,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776616140] [2022-07-22 11:17:23,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:17:23,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:17:23,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:17:23,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:17:23,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:17:23,116 INFO L87 Difference]: Start difference. First operand 217 states and 341 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:23,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:17:23,770 INFO L93 Difference]: Finished difference Result 511 states and 803 transitions. [2022-07-22 11:17:23,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:17:23,770 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2022-07-22 11:17:23,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:17:23,772 INFO L225 Difference]: With dead ends: 511 [2022-07-22 11:17:23,772 INFO L226 Difference]: Without dead ends: 315 [2022-07-22 11:17:23,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 11:17:23,773 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 137 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-22 11:17:23,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 316 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-22 11:17:23,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2022-07-22 11:17:23,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 218. [2022-07-22 11:17:23,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 217 states have (on average 1.566820276497696) internal successors, (340), 217 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:23,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 340 transitions. [2022-07-22 11:17:23,778 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 340 transitions. Word has length 58 [2022-07-22 11:17:23,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:17:23,778 INFO L495 AbstractCegarLoop]: Abstraction has 218 states and 340 transitions. [2022-07-22 11:17:23,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:23,778 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 340 transitions. [2022-07-22 11:17:23,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-07-22 11:17:23,779 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:17:23,780 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 11:17:23,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 11:17:23,780 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:17:23,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:17:23,781 INFO L85 PathProgramCache]: Analyzing trace with hash 477040383, now seen corresponding path program 1 times [2022-07-22 11:17:23,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:17:23,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794115583] [2022-07-22 11:17:23,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:17:23,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:17:23,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:17:23,846 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 11:17:23,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:17:23,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794115583] [2022-07-22 11:17:23,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794115583] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:17:23,847 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:17:23,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:17:23,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891899270] [2022-07-22 11:17:23,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:17:23,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:17:23,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:17:23,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:17:23,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:17:23,849 INFO L87 Difference]: Start difference. First operand 218 states and 340 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:24,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:17:24,353 INFO L93 Difference]: Finished difference Result 428 states and 669 transitions. [2022-07-22 11:17:24,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:17:24,353 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 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 59 [2022-07-22 11:17:24,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:17:24,354 INFO L225 Difference]: With dead ends: 428 [2022-07-22 11:17:24,354 INFO L226 Difference]: Without dead ends: 231 [2022-07-22 11:17:24,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 11:17:24,355 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 22 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-22 11:17:24,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 461 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-22 11:17:24,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2022-07-22 11:17:24,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 218. [2022-07-22 11:17:24,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 217 states have (on average 1.5622119815668203) internal successors, (339), 217 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:24,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 339 transitions. [2022-07-22 11:17:24,362 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 339 transitions. Word has length 59 [2022-07-22 11:17:24,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:17:24,364 INFO L495 AbstractCegarLoop]: Abstraction has 218 states and 339 transitions. [2022-07-22 11:17:24,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:24,365 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 339 transitions. [2022-07-22 11:17:24,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-07-22 11:17:24,366 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:17:24,366 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 11:17:24,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 11:17:24,367 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:17:24,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:17:24,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1137447710, now seen corresponding path program 1 times [2022-07-22 11:17:24,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:17:24,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63836931] [2022-07-22 11:17:24,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:17:24,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:17:24,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:17:24,449 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 11:17:24,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:17:24,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63836931] [2022-07-22 11:17:24,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63836931] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:17:24,450 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:17:24,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:17:24,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589901008] [2022-07-22 11:17:24,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:17:24,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:17:24,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:17:24,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:17:24,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:17:24,452 INFO L87 Difference]: Start difference. First operand 218 states and 339 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:25,874 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 11:17:26,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:17:26,065 INFO L93 Difference]: Finished difference Result 428 states and 668 transitions. [2022-07-22 11:17:26,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:17:26,066 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 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 60 [2022-07-22 11:17:26,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:17:26,067 INFO L225 Difference]: With dead ends: 428 [2022-07-22 11:17:26,067 INFO L226 Difference]: Without dead ends: 231 [2022-07-22 11:17:26,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 11:17:26,068 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 20 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-22 11:17:26,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 461 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-22 11:17:26,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2022-07-22 11:17:26,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 218. [2022-07-22 11:17:26,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 217 states have (on average 1.5576036866359446) internal successors, (338), 217 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:26,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 338 transitions. [2022-07-22 11:17:26,076 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 338 transitions. Word has length 60 [2022-07-22 11:17:26,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:17:26,076 INFO L495 AbstractCegarLoop]: Abstraction has 218 states and 338 transitions. [2022-07-22 11:17:26,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:26,076 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 338 transitions. [2022-07-22 11:17:26,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-07-22 11:17:26,077 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:17:26,077 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 11:17:26,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 11:17:26,077 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:17:26,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:17:26,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1486530822, now seen corresponding path program 1 times [2022-07-22 11:17:26,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:17:26,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302398492] [2022-07-22 11:17:26,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:17:26,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:17:26,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:17:26,144 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 11:17:26,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:17:26,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302398492] [2022-07-22 11:17:26,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302398492] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:17:26,145 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:17:26,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:17:26,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466446588] [2022-07-22 11:17:26,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:17:26,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:17:26,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:17:26,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:17:26,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:17:26,146 INFO L87 Difference]: Start difference. First operand 218 states and 338 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:27,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:17:27,174 INFO L93 Difference]: Finished difference Result 418 states and 654 transitions. [2022-07-22 11:17:27,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:17:27,174 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2022-07-22 11:17:27,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:17:27,175 INFO L225 Difference]: With dead ends: 418 [2022-07-22 11:17:27,175 INFO L226 Difference]: Without dead ends: 221 [2022-07-22 11:17:27,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 11:17:27,176 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 11 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-22 11:17:27,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 475 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-22 11:17:27,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2022-07-22 11:17:27,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 218. [2022-07-22 11:17:27,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 217 states have (on average 1.5529953917050692) internal successors, (337), 217 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:27,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 337 transitions. [2022-07-22 11:17:27,180 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 337 transitions. Word has length 61 [2022-07-22 11:17:27,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:17:27,180 INFO L495 AbstractCegarLoop]: Abstraction has 218 states and 337 transitions. [2022-07-22 11:17:27,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:27,180 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 337 transitions. [2022-07-22 11:17:27,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-07-22 11:17:27,181 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:17:27,181 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:17:27,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 11:17:27,181 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:17:27,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:17:27,181 INFO L85 PathProgramCache]: Analyzing trace with hash -813532014, now seen corresponding path program 1 times [2022-07-22 11:17:27,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:17:27,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731634385] [2022-07-22 11:17:27,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:17:27,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:17:27,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:17:27,252 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 11:17:27,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:17:27,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731634385] [2022-07-22 11:17:27,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731634385] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:17:27,253 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:17:27,253 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:17:27,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077231081] [2022-07-22 11:17:27,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:17:27,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:17:27,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:17:27,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:17:27,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:17:27,254 INFO L87 Difference]: Start difference. First operand 218 states and 337 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:28,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:17:28,052 INFO L93 Difference]: Finished difference Result 512 states and 797 transitions. [2022-07-22 11:17:28,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:17:28,052 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2022-07-22 11:17:28,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:17:28,054 INFO L225 Difference]: With dead ends: 512 [2022-07-22 11:17:28,054 INFO L226 Difference]: Without dead ends: 315 [2022-07-22 11:17:28,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 11:17:28,054 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 114 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-22 11:17:28,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 330 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-22 11:17:28,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2022-07-22 11:17:28,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 241. [2022-07-22 11:17:28,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 240 states have (on average 1.5916666666666666) internal successors, (382), 240 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:28,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 382 transitions. [2022-07-22 11:17:28,059 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 382 transitions. Word has length 61 [2022-07-22 11:17:28,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:17:28,059 INFO L495 AbstractCegarLoop]: Abstraction has 241 states and 382 transitions. [2022-07-22 11:17:28,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:28,059 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 382 transitions. [2022-07-22 11:17:28,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-07-22 11:17:28,060 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:17:28,060 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:17:28,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 11:17:28,060 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:17:28,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:17:28,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1848715960, now seen corresponding path program 1 times [2022-07-22 11:17:28,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:17:28,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198138657] [2022-07-22 11:17:28,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:17:28,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:17:28,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:17:28,166 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 11:17:28,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:17:28,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198138657] [2022-07-22 11:17:28,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198138657] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:17:28,167 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:17:28,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:17:28,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617526563] [2022-07-22 11:17:28,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:17:28,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:17:28,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:17:28,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:17:28,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:17:28,168 INFO L87 Difference]: Start difference. First operand 241 states and 382 transitions. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:28,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:17:28,907 INFO L93 Difference]: Finished difference Result 611 states and 977 transitions. [2022-07-22 11:17:28,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:17:28,908 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 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 89 [2022-07-22 11:17:28,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:17:28,909 INFO L225 Difference]: With dead ends: 611 [2022-07-22 11:17:28,909 INFO L226 Difference]: Without dead ends: 391 [2022-07-22 11:17:28,909 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 11:17:28,910 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 120 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 11:17:28,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 326 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-22 11:17:28,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2022-07-22 11:17:28,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 305. [2022-07-22 11:17:28,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 304 states have (on average 1.618421052631579) internal successors, (492), 304 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:28,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 492 transitions. [2022-07-22 11:17:28,916 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 492 transitions. Word has length 89 [2022-07-22 11:17:28,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:17:28,917 INFO L495 AbstractCegarLoop]: Abstraction has 305 states and 492 transitions. [2022-07-22 11:17:28,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:28,917 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 492 transitions. [2022-07-22 11:17:28,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-07-22 11:17:28,918 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:17:28,918 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:17:28,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-22 11:17:28,918 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:17:28,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:17:28,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1555801769, now seen corresponding path program 1 times [2022-07-22 11:17:28,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:17:28,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730790193] [2022-07-22 11:17:28,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:17:28,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:17:28,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:17:29,001 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 11:17:29,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:17:29,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730790193] [2022-07-22 11:17:29,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730790193] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:17:29,002 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:17:29,002 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:17:29,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347344] [2022-07-22 11:17:29,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:17:29,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:17:29,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:17:29,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:17:29,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:17:29,003 INFO L87 Difference]: Start difference. First operand 305 states and 492 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:29,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:17:29,604 INFO L93 Difference]: Finished difference Result 703 states and 1130 transitions. [2022-07-22 11:17:29,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:17:29,605 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2022-07-22 11:17:29,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:17:29,606 INFO L225 Difference]: With dead ends: 703 [2022-07-22 11:17:29,606 INFO L226 Difference]: Without dead ends: 419 [2022-07-22 11:17:29,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 11:17:29,607 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 116 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-22 11:17:29,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 314 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-22 11:17:29,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2022-07-22 11:17:29,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 342. [2022-07-22 11:17:29,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 341 states have (on average 1.6275659824046922) internal successors, (555), 341 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:29,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 555 transitions. [2022-07-22 11:17:29,612 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 555 transitions. Word has length 94 [2022-07-22 11:17:29,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:17:29,612 INFO L495 AbstractCegarLoop]: Abstraction has 342 states and 555 transitions. [2022-07-22 11:17:29,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:29,613 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 555 transitions. [2022-07-22 11:17:29,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-07-22 11:17:29,613 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:17:29,613 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:17:29,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-22 11:17:29,614 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:17:29,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:17:29,614 INFO L85 PathProgramCache]: Analyzing trace with hash 430223126, now seen corresponding path program 1 times [2022-07-22 11:17:29,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:17:29,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887775110] [2022-07-22 11:17:29,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:17:29,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:17:29,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:17:29,681 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-22 11:17:29,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:17:29,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887775110] [2022-07-22 11:17:29,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887775110] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:17:29,682 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:17:29,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:17:29,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506291621] [2022-07-22 11:17:29,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:17:29,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:17:29,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:17:29,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:17:29,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:17:29,683 INFO L87 Difference]: Start difference. First operand 342 states and 555 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:30,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:17:30,104 INFO L93 Difference]: Finished difference Result 703 states and 1145 transitions. [2022-07-22 11:17:30,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:17:30,104 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 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 95 [2022-07-22 11:17:30,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:17:30,105 INFO L225 Difference]: With dead ends: 703 [2022-07-22 11:17:30,105 INFO L226 Difference]: Without dead ends: 382 [2022-07-22 11:17:30,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 11:17:30,106 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 31 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-22 11:17:30,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 479 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-22 11:17:30,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2022-07-22 11:17:30,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 364. [2022-07-22 11:17:30,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 363 states have (on average 1.6253443526170799) internal successors, (590), 363 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:30,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 590 transitions. [2022-07-22 11:17:30,112 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 590 transitions. Word has length 95 [2022-07-22 11:17:30,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:17:30,112 INFO L495 AbstractCegarLoop]: Abstraction has 364 states and 590 transitions. [2022-07-22 11:17:30,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:30,112 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 590 transitions. [2022-07-22 11:17:30,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-22 11:17:30,113 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:17:30,113 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:17:30,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-22 11:17:30,113 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:17:30,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:17:30,114 INFO L85 PathProgramCache]: Analyzing trace with hash -174040009, now seen corresponding path program 1 times [2022-07-22 11:17:30,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:17:30,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869249193] [2022-07-22 11:17:30,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:17:30,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:17:30,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:17:30,182 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-22 11:17:30,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:17:30,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869249193] [2022-07-22 11:17:30,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869249193] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:17:30,182 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:17:30,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:17:30,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169916927] [2022-07-22 11:17:30,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:17:30,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:17:30,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:17:30,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:17:30,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:17:30,184 INFO L87 Difference]: Start difference. First operand 364 states and 590 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:30,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:17:30,869 INFO L93 Difference]: Finished difference Result 725 states and 1179 transitions. [2022-07-22 11:17:30,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:17:30,869 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 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 109 [2022-07-22 11:17:30,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:17:30,871 INFO L225 Difference]: With dead ends: 725 [2022-07-22 11:17:30,871 INFO L226 Difference]: Without dead ends: 382 [2022-07-22 11:17:30,873 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 11:17:30,873 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 40 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 11:17:30,874 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 479 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-22 11:17:30,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2022-07-22 11:17:30,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 364. [2022-07-22 11:17:30,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 363 states have (on average 1.6225895316804408) internal successors, (589), 363 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:30,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 589 transitions. [2022-07-22 11:17:30,880 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 589 transitions. Word has length 109 [2022-07-22 11:17:30,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:17:30,880 INFO L495 AbstractCegarLoop]: Abstraction has 364 states and 589 transitions. [2022-07-22 11:17:30,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:30,880 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 589 transitions. [2022-07-22 11:17:30,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-22 11:17:30,881 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:17:30,881 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:17:30,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-22 11:17:30,882 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:17:30,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:17:30,882 INFO L85 PathProgramCache]: Analyzing trace with hash -851994560, now seen corresponding path program 1 times [2022-07-22 11:17:30,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:17:30,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771508110] [2022-07-22 11:17:30,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:17:30,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:17:30,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:17:30,950 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-22 11:17:30,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:17:30,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771508110] [2022-07-22 11:17:30,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771508110] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:17:30,952 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:17:30,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:17:30,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477126895] [2022-07-22 11:17:30,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:17:30,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:17:30,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:17:30,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:17:30,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:17:30,954 INFO L87 Difference]: Start difference. First operand 364 states and 589 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:31,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:17:31,398 INFO L93 Difference]: Finished difference Result 780 states and 1254 transitions. [2022-07-22 11:17:31,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:17:31,398 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 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 109 [2022-07-22 11:17:31,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:17:31,400 INFO L225 Difference]: With dead ends: 780 [2022-07-22 11:17:31,400 INFO L226 Difference]: Without dead ends: 437 [2022-07-22 11:17:31,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 11:17:31,400 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 135 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-22 11:17:31,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 316 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-22 11:17:31,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2022-07-22 11:17:31,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 364. [2022-07-22 11:17:31,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 363 states have (on average 1.606060606060606) internal successors, (583), 363 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:31,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 583 transitions. [2022-07-22 11:17:31,407 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 583 transitions. Word has length 109 [2022-07-22 11:17:31,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:17:31,407 INFO L495 AbstractCegarLoop]: Abstraction has 364 states and 583 transitions. [2022-07-22 11:17:31,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:31,408 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 583 transitions. [2022-07-22 11:17:31,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-07-22 11:17:31,419 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:17:31,419 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:17:31,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-22 11:17:31,420 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:17:31,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:17:31,420 INFO L85 PathProgramCache]: Analyzing trace with hash 262499795, now seen corresponding path program 1 times [2022-07-22 11:17:31,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:17:31,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316126450] [2022-07-22 11:17:31,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:17:31,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:17:31,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:17:31,500 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-22 11:17:31,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:17:31,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316126450] [2022-07-22 11:17:31,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316126450] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:17:31,501 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:17:31,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:17:31,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681916010] [2022-07-22 11:17:31,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:17:31,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:17:31,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:17:31,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:17:31,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:17:31,503 INFO L87 Difference]: Start difference. First operand 364 states and 583 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:32,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:17:32,314 INFO L93 Difference]: Finished difference Result 780 states and 1242 transitions. [2022-07-22 11:17:32,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:17:32,315 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2022-07-22 11:17:32,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:17:32,316 INFO L225 Difference]: With dead ends: 780 [2022-07-22 11:17:32,316 INFO L226 Difference]: Without dead ends: 437 [2022-07-22 11:17:32,317 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 11:17:32,317 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 139 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-22 11:17:32,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 316 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-22 11:17:32,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2022-07-22 11:17:32,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 364. [2022-07-22 11:17:32,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 363 states have (on average 1.5867768595041323) internal successors, (576), 363 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:32,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 576 transitions. [2022-07-22 11:17:32,323 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 576 transitions. Word has length 110 [2022-07-22 11:17:32,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:17:32,323 INFO L495 AbstractCegarLoop]: Abstraction has 364 states and 576 transitions. [2022-07-22 11:17:32,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:32,323 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 576 transitions. [2022-07-22 11:17:32,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-22 11:17:32,324 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:17:32,324 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:17:32,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-22 11:17:32,325 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:17:32,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:17:32,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1945924334, now seen corresponding path program 1 times [2022-07-22 11:17:32,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:17:32,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735945415] [2022-07-22 11:17:32,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:17:32,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:17:32,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:17:32,393 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-22 11:17:32,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:17:32,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735945415] [2022-07-22 11:17:32,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735945415] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:17:32,394 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:17:32,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:17:32,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961682255] [2022-07-22 11:17:32,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:17:32,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:17:32,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:17:32,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:17:32,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:17:32,395 INFO L87 Difference]: Start difference. First operand 364 states and 576 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:33,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:17:33,434 INFO L93 Difference]: Finished difference Result 780 states and 1228 transitions. [2022-07-22 11:17:33,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:17:33,434 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 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 111 [2022-07-22 11:17:33,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:17:33,436 INFO L225 Difference]: With dead ends: 780 [2022-07-22 11:17:33,436 INFO L226 Difference]: Without dead ends: 437 [2022-07-22 11:17:33,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 11:17:33,437 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 137 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-22 11:17:33,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 316 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-22 11:17:33,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2022-07-22 11:17:33,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 364. [2022-07-22 11:17:33,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 363 states have (on average 1.5674931129476584) internal successors, (569), 363 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:33,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 569 transitions. [2022-07-22 11:17:33,444 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 569 transitions. Word has length 111 [2022-07-22 11:17:33,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:17:33,444 INFO L495 AbstractCegarLoop]: Abstraction has 364 states and 569 transitions. [2022-07-22 11:17:33,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:33,444 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 569 transitions. [2022-07-22 11:17:33,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-22 11:17:33,445 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:17:33,445 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:17:33,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-22 11:17:33,445 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:17:33,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:17:33,445 INFO L85 PathProgramCache]: Analyzing trace with hash -248884466, now seen corresponding path program 1 times [2022-07-22 11:17:33,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:17:33,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365076887] [2022-07-22 11:17:33,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:17:33,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:17:33,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:17:33,556 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-22 11:17:33,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:17:33,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365076887] [2022-07-22 11:17:33,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365076887] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:17:33,556 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:17:33,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:17:33,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362177266] [2022-07-22 11:17:33,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:17:33,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:17:33,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:17:33,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:17:33,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:17:33,559 INFO L87 Difference]: Start difference. First operand 364 states and 569 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:34,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:17:34,778 INFO L93 Difference]: Finished difference Result 780 states and 1214 transitions. [2022-07-22 11:17:34,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:17:34,779 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2022-07-22 11:17:34,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:17:34,780 INFO L225 Difference]: With dead ends: 780 [2022-07-22 11:17:34,780 INFO L226 Difference]: Without dead ends: 437 [2022-07-22 11:17:34,781 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 11:17:34,781 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 135 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-22 11:17:34,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 316 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-22 11:17:34,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2022-07-22 11:17:34,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 364. [2022-07-22 11:17:34,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 363 states have (on average 1.5482093663911847) internal successors, (562), 363 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:34,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 562 transitions. [2022-07-22 11:17:34,787 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 562 transitions. Word has length 112 [2022-07-22 11:17:34,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:17:34,787 INFO L495 AbstractCegarLoop]: Abstraction has 364 states and 562 transitions. [2022-07-22 11:17:34,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:34,788 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 562 transitions. [2022-07-22 11:17:34,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-07-22 11:17:34,789 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:17:34,789 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:17:34,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-22 11:17:34,789 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:17:34,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:17:34,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1564451825, now seen corresponding path program 1 times [2022-07-22 11:17:34,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:17:34,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27655138] [2022-07-22 11:17:34,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:17:34,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:17:34,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:17:34,882 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-22 11:17:34,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:17:34,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27655138] [2022-07-22 11:17:34,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27655138] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:17:34,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:17:34,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:17:34,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692239741] [2022-07-22 11:17:34,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:17:34,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:17:34,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:17:34,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:17:34,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:17:34,884 INFO L87 Difference]: Start difference. First operand 364 states and 562 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:36,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:17:36,127 INFO L93 Difference]: Finished difference Result 797 states and 1232 transitions. [2022-07-22 11:17:36,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:17:36,128 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2022-07-22 11:17:36,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:17:36,129 INFO L225 Difference]: With dead ends: 797 [2022-07-22 11:17:36,129 INFO L226 Difference]: Without dead ends: 454 [2022-07-22 11:17:36,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 11:17:36,130 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 74 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-22 11:17:36,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 447 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-22 11:17:36,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2022-07-22 11:17:36,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 404. [2022-07-22 11:17:36,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 403 states have (on average 1.5508684863523574) internal successors, (625), 403 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:36,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 625 transitions. [2022-07-22 11:17:36,136 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 625 transitions. Word has length 117 [2022-07-22 11:17:36,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:17:36,136 INFO L495 AbstractCegarLoop]: Abstraction has 404 states and 625 transitions. [2022-07-22 11:17:36,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:36,136 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 625 transitions. [2022-07-22 11:17:36,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-07-22 11:17:36,137 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:17:36,137 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:17:36,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-22 11:17:36,137 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:17:36,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:17:36,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1843292625, now seen corresponding path program 1 times [2022-07-22 11:17:36,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:17:36,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447916926] [2022-07-22 11:17:36,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:17:36,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:17:36,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:17:36,217 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-22 11:17:36,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:17:36,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447916926] [2022-07-22 11:17:36,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447916926] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:17:36,218 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:17:36,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:17:36,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706359099] [2022-07-22 11:17:36,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:17:36,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:17:36,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:17:36,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:17:36,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:17:36,220 INFO L87 Difference]: Start difference. First operand 404 states and 625 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:37,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:17:37,155 INFO L93 Difference]: Finished difference Result 832 states and 1289 transitions. [2022-07-22 11:17:37,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:17:37,155 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2022-07-22 11:17:37,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:17:37,157 INFO L225 Difference]: With dead ends: 832 [2022-07-22 11:17:37,157 INFO L226 Difference]: Without dead ends: 449 [2022-07-22 11:17:37,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 11:17:37,158 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 33 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 567 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-22 11:17:37,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 567 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-22 11:17:37,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2022-07-22 11:17:37,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 428. [2022-07-22 11:17:37,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 427 states have (on average 1.5456674473067915) internal successors, (660), 427 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:37,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 660 transitions. [2022-07-22 11:17:37,164 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 660 transitions. Word has length 117 [2022-07-22 11:17:37,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:17:37,164 INFO L495 AbstractCegarLoop]: Abstraction has 428 states and 660 transitions. [2022-07-22 11:17:37,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:37,164 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 660 transitions. [2022-07-22 11:17:37,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-07-22 11:17:37,165 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:17:37,165 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:17:37,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-22 11:17:37,165 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:17:37,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:17:37,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1399752639, now seen corresponding path program 1 times [2022-07-22 11:17:37,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:17:37,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184556574] [2022-07-22 11:17:37,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:17:37,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:17:37,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:17:37,265 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-22 11:17:37,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:17:37,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184556574] [2022-07-22 11:17:37,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184556574] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:17:37,266 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:17:37,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:17:37,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549883368] [2022-07-22 11:17:37,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:17:37,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:17:37,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:17:37,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:17:37,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:17:37,267 INFO L87 Difference]: Start difference. First operand 428 states and 660 transitions. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:37,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:17:37,812 INFO L93 Difference]: Finished difference Result 948 states and 1460 transitions. [2022-07-22 11:17:37,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:17:37,813 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2022-07-22 11:17:37,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:17:37,815 INFO L225 Difference]: With dead ends: 948 [2022-07-22 11:17:37,815 INFO L226 Difference]: Without dead ends: 541 [2022-07-22 11:17:37,815 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 11:17:37,816 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 105 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-22 11:17:37,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 317 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-22 11:17:37,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2022-07-22 11:17:37,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 471. [2022-07-22 11:17:37,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 470 states have (on average 1.5510638297872341) internal successors, (729), 470 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:37,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 729 transitions. [2022-07-22 11:17:37,823 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 729 transitions. Word has length 125 [2022-07-22 11:17:37,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:17:37,823 INFO L495 AbstractCegarLoop]: Abstraction has 471 states and 729 transitions. [2022-07-22 11:17:37,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:37,823 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 729 transitions. [2022-07-22 11:17:37,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-07-22 11:17:37,824 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:17:37,824 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:17:37,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-22 11:17:37,824 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:17:37,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:17:37,825 INFO L85 PathProgramCache]: Analyzing trace with hash 309940842, now seen corresponding path program 1 times [2022-07-22 11:17:37,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:17:37,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205708102] [2022-07-22 11:17:37,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:17:37,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:17:37,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:17:37,899 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-22 11:17:37,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:17:37,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205708102] [2022-07-22 11:17:37,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205708102] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:17:37,900 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:17:37,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:17:37,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524401044] [2022-07-22 11:17:37,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:17:37,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:17:37,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:17:37,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:17:37,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:17:37,901 INFO L87 Difference]: Start difference. First operand 471 states and 729 transitions. Second operand has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:38,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:17:38,717 INFO L93 Difference]: Finished difference Result 994 states and 1534 transitions. [2022-07-22 11:17:38,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:17:38,718 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2022-07-22 11:17:38,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:17:38,719 INFO L225 Difference]: With dead ends: 994 [2022-07-22 11:17:38,719 INFO L226 Difference]: Without dead ends: 542 [2022-07-22 11:17:38,736 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 11:17:38,737 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 106 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-22 11:17:38,737 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 316 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-22 11:17:38,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2022-07-22 11:17:38,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 473. [2022-07-22 11:17:38,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473 states, 472 states have (on average 1.5508474576271187) internal successors, (732), 472 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:38,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 732 transitions. [2022-07-22 11:17:38,745 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 732 transitions. Word has length 126 [2022-07-22 11:17:38,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:17:38,745 INFO L495 AbstractCegarLoop]: Abstraction has 473 states and 732 transitions. [2022-07-22 11:17:38,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:38,745 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 732 transitions. [2022-07-22 11:17:38,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-07-22 11:17:38,746 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:17:38,747 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:17:38,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-22 11:17:38,747 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:17:38,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:17:38,747 INFO L85 PathProgramCache]: Analyzing trace with hash -474729006, now seen corresponding path program 1 times [2022-07-22 11:17:38,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:17:38,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931201254] [2022-07-22 11:17:38,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:17:38,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:17:38,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:17:38,829 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-07-22 11:17:38,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:17:38,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931201254] [2022-07-22 11:17:38,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931201254] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:17:38,829 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:17:38,829 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 11:17:38,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563566691] [2022-07-22 11:17:38,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:17:38,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 11:17:38,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:17:38,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 11:17:38,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 11:17:38,831 INFO L87 Difference]: Start difference. First operand 473 states and 732 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:40,181 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 11:17:40,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:17:40,745 INFO L93 Difference]: Finished difference Result 935 states and 1452 transitions. [2022-07-22 11:17:40,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 11:17:40,745 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 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 131 [2022-07-22 11:17:40,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:17:40,747 INFO L225 Difference]: With dead ends: 935 [2022-07-22 11:17:40,747 INFO L226 Difference]: Without dead ends: 483 [2022-07-22 11:17:40,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-22 11:17:40,748 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 144 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-22 11:17:40,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 338 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-22 11:17:40,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2022-07-22 11:17:40,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 482. [2022-07-22 11:17:40,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 481 states have (on average 1.5446985446985446) internal successors, (743), 481 states have internal predecessors, (743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:40,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 743 transitions. [2022-07-22 11:17:40,754 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 743 transitions. Word has length 131 [2022-07-22 11:17:40,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:17:40,754 INFO L495 AbstractCegarLoop]: Abstraction has 482 states and 743 transitions. [2022-07-22 11:17:40,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:40,755 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 743 transitions. [2022-07-22 11:17:40,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-07-22 11:17:40,756 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:17:40,756 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:17:40,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-22 11:17:40,756 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:17:40,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:17:40,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1091943493, now seen corresponding path program 1 times [2022-07-22 11:17:40,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:17:40,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4239356] [2022-07-22 11:17:40,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:17:40,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:17:40,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:17:40,830 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-07-22 11:17:40,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:17:40,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4239356] [2022-07-22 11:17:40,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4239356] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:17:40,830 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:17:40,830 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:17:40,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981411693] [2022-07-22 11:17:40,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:17:40,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:17:40,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:17:40,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:17:40,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:17:40,832 INFO L87 Difference]: Start difference. First operand 482 states and 743 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:41,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:17:41,390 INFO L93 Difference]: Finished difference Result 1002 states and 1542 transitions. [2022-07-22 11:17:41,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:17:41,390 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2022-07-22 11:17:41,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:17:41,392 INFO L225 Difference]: With dead ends: 1002 [2022-07-22 11:17:41,392 INFO L226 Difference]: Without dead ends: 541 [2022-07-22 11:17:41,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 11:17:41,393 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 128 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-22 11:17:41,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 354 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-22 11:17:41,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2022-07-22 11:17:41,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 482. [2022-07-22 11:17:41,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 481 states have (on average 1.525987525987526) internal successors, (734), 481 states have internal predecessors, (734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:41,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 734 transitions. [2022-07-22 11:17:41,402 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 734 transitions. Word has length 132 [2022-07-22 11:17:41,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:17:41,403 INFO L495 AbstractCegarLoop]: Abstraction has 482 states and 734 transitions. [2022-07-22 11:17:41,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:41,403 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 734 transitions. [2022-07-22 11:17:41,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-07-22 11:17:41,404 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:17:41,404 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:17:41,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-22 11:17:41,404 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:17:41,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:17:41,405 INFO L85 PathProgramCache]: Analyzing trace with hash -2126146282, now seen corresponding path program 1 times [2022-07-22 11:17:41,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:17:41,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948051824] [2022-07-22 11:17:41,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:17:41,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:17:41,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:17:41,504 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 134 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-22 11:17:41,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:17:41,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948051824] [2022-07-22 11:17:41,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948051824] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:17:41,505 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:17:41,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:17:41,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665998035] [2022-07-22 11:17:41,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:17:41,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:17:41,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:17:41,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:17:41,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:17:41,507 INFO L87 Difference]: Start difference. First operand 482 states and 734 transitions. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:43,137 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 11:17:43,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:17:43,342 INFO L93 Difference]: Finished difference Result 977 states and 1489 transitions. [2022-07-22 11:17:43,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:17:43,343 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2022-07-22 11:17:43,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:17:43,344 INFO L225 Difference]: With dead ends: 977 [2022-07-22 11:17:43,344 INFO L226 Difference]: Without dead ends: 516 [2022-07-22 11:17:43,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 11:17:43,345 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 64 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-22 11:17:43,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 467 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-22 11:17:43,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2022-07-22 11:17:43,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 482. [2022-07-22 11:17:43,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 481 states have (on average 1.523908523908524) internal successors, (733), 481 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:43,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 733 transitions. [2022-07-22 11:17:43,353 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 733 transitions. Word has length 138 [2022-07-22 11:17:43,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:17:43,353 INFO L495 AbstractCegarLoop]: Abstraction has 482 states and 733 transitions. [2022-07-22 11:17:43,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:43,354 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 733 transitions. [2022-07-22 11:17:43,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-07-22 11:17:43,354 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:17:43,355 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:17:43,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-22 11:17:43,355 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:17:43,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:17:43,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1366121880, now seen corresponding path program 1 times [2022-07-22 11:17:43,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:17:43,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399547496] [2022-07-22 11:17:43,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:17:43,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:17:43,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:17:43,433 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-07-22 11:17:43,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:17:43,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399547496] [2022-07-22 11:17:43,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399547496] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:17:43,434 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:17:43,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:17:43,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720922180] [2022-07-22 11:17:43,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:17:43,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:17:43,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:17:43,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:17:43,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:17:43,435 INFO L87 Difference]: Start difference. First operand 482 states and 733 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:45,183 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 11:17:45,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:17:45,424 INFO L93 Difference]: Finished difference Result 1002 states and 1522 transitions. [2022-07-22 11:17:45,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:17:45,424 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2022-07-22 11:17:45,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:17:45,426 INFO L225 Difference]: With dead ends: 1002 [2022-07-22 11:17:45,426 INFO L226 Difference]: Without dead ends: 541 [2022-07-22 11:17:45,426 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 11:17:45,427 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 115 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-22 11:17:45,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 364 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-22 11:17:45,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2022-07-22 11:17:45,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 482. [2022-07-22 11:17:45,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 481 states have (on average 1.5093555093555093) internal successors, (726), 481 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:45,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 726 transitions. [2022-07-22 11:17:45,434 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 726 transitions. Word has length 139 [2022-07-22 11:17:45,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:17:45,434 INFO L495 AbstractCegarLoop]: Abstraction has 482 states and 726 transitions. [2022-07-22 11:17:45,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:45,434 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 726 transitions. [2022-07-22 11:17:45,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-07-22 11:17:45,437 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:17:45,437 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:17:45,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-22 11:17:45,437 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:17:45,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:17:45,438 INFO L85 PathProgramCache]: Analyzing trace with hash 984886832, now seen corresponding path program 1 times [2022-07-22 11:17:45,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:17:45,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671181153] [2022-07-22 11:17:45,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:17:45,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:17:45,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:17:45,513 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-22 11:17:45,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:17:45,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671181153] [2022-07-22 11:17:45,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671181153] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:17:45,514 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:17:45,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:17:45,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312138497] [2022-07-22 11:17:45,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:17:45,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:17:45,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:17:45,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:17:45,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:17:45,515 INFO L87 Difference]: Start difference. First operand 482 states and 726 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:46,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:17:46,646 INFO L93 Difference]: Finished difference Result 975 states and 1471 transitions. [2022-07-22 11:17:46,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:17:46,647 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 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 139 [2022-07-22 11:17:46,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:17:46,648 INFO L225 Difference]: With dead ends: 975 [2022-07-22 11:17:46,648 INFO L226 Difference]: Without dead ends: 514 [2022-07-22 11:17:46,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 11:17:46,649 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 60 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-22 11:17:46,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 479 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-22 11:17:46,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2022-07-22 11:17:46,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 482. [2022-07-22 11:17:46,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 481 states have (on average 1.5072765072765073) internal successors, (725), 481 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:46,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 725 transitions. [2022-07-22 11:17:46,657 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 725 transitions. Word has length 139 [2022-07-22 11:17:46,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:17:46,657 INFO L495 AbstractCegarLoop]: Abstraction has 482 states and 725 transitions. [2022-07-22 11:17:46,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:46,657 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 725 transitions. [2022-07-22 11:17:46,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-07-22 11:17:46,658 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:17:46,658 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:17:46,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-22 11:17:46,658 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:17:46,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:17:46,658 INFO L85 PathProgramCache]: Analyzing trace with hash 309390678, now seen corresponding path program 1 times [2022-07-22 11:17:46,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:17:46,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073189993] [2022-07-22 11:17:46,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:17:46,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:17:46,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:17:46,754 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-07-22 11:17:46,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:17:46,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073189993] [2022-07-22 11:17:46,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073189993] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:17:46,754 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:17:46,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:17:46,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440894361] [2022-07-22 11:17:46,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:17:46,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:17:46,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:17:46,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:17:46,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:17:46,756 INFO L87 Difference]: Start difference. First operand 482 states and 725 transitions. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:47,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:17:47,400 INFO L93 Difference]: Finished difference Result 982 states and 1481 transitions. [2022-07-22 11:17:47,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:17:47,400 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 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 139 [2022-07-22 11:17:47,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:17:47,402 INFO L225 Difference]: With dead ends: 982 [2022-07-22 11:17:47,402 INFO L226 Difference]: Without dead ends: 521 [2022-07-22 11:17:47,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 11:17:47,406 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 27 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 555 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-22 11:17:47,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 555 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-22 11:17:47,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2022-07-22 11:17:47,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 508. [2022-07-22 11:17:47,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 507 states have (on average 1.5029585798816567) internal successors, (762), 507 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:47,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 762 transitions. [2022-07-22 11:17:47,414 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 762 transitions. Word has length 139 [2022-07-22 11:17:47,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:17:47,414 INFO L495 AbstractCegarLoop]: Abstraction has 508 states and 762 transitions. [2022-07-22 11:17:47,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:47,415 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 762 transitions. [2022-07-22 11:17:47,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-07-22 11:17:47,416 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:17:47,416 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2022-07-22 11:17:47,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-22 11:17:47,416 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:17:47,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:17:47,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1970724841, now seen corresponding path program 1 times [2022-07-22 11:17:47,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:17:47,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513275943] [2022-07-22 11:17:47,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:17:47,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:17:47,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:17:47,494 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-22 11:17:47,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:17:47,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513275943] [2022-07-22 11:17:47,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513275943] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:17:47,495 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:17:47,495 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:17:47,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822817426] [2022-07-22 11:17:47,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:17:47,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:17:47,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:17:47,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:17:47,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:17:47,496 INFO L87 Difference]: Start difference. First operand 508 states and 762 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:47,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:17:47,993 INFO L93 Difference]: Finished difference Result 1096 states and 1645 transitions. [2022-07-22 11:17:47,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:17:47,994 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2022-07-22 11:17:47,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:17:47,996 INFO L225 Difference]: With dead ends: 1096 [2022-07-22 11:17:47,996 INFO L226 Difference]: Without dead ends: 609 [2022-07-22 11:17:47,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 11:17:47,997 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 111 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-22 11:17:47,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 354 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-22 11:17:47,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2022-07-22 11:17:48,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 536. [2022-07-22 11:17:48,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 535 states have (on average 1.4897196261682244) internal successors, (797), 535 states have internal predecessors, (797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:48,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 797 transitions. [2022-07-22 11:17:48,006 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 797 transitions. Word has length 141 [2022-07-22 11:17:48,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:17:48,006 INFO L495 AbstractCegarLoop]: Abstraction has 536 states and 797 transitions. [2022-07-22 11:17:48,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:48,006 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 797 transitions. [2022-07-22 11:17:48,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-07-22 11:17:48,007 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:17:48,007 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-22 11:17:48,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-22 11:17:48,008 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:17:48,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:17:48,008 INFO L85 PathProgramCache]: Analyzing trace with hash 155364701, now seen corresponding path program 1 times [2022-07-22 11:17:48,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:17:48,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049148225] [2022-07-22 11:17:48,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:17:48,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:17:48,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:17:48,103 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-22 11:17:48,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:17:48,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049148225] [2022-07-22 11:17:48,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049148225] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:17:48,104 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:17:48,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:17:48,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016377110] [2022-07-22 11:17:48,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:17:48,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:17:48,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:17:48,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:17:48,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:17:48,105 INFO L87 Difference]: Start difference. First operand 536 states and 797 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:48,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:17:48,922 INFO L93 Difference]: Finished difference Result 1075 states and 1600 transitions. [2022-07-22 11:17:48,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:17:48,922 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 142 [2022-07-22 11:17:48,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:17:48,924 INFO L225 Difference]: With dead ends: 1075 [2022-07-22 11:17:48,924 INFO L226 Difference]: Without dead ends: 560 [2022-07-22 11:17:48,925 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 11:17:48,925 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 51 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-22 11:17:48,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 497 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-22 11:17:48,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2022-07-22 11:17:48,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 536. [2022-07-22 11:17:48,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 535 states have (on average 1.4878504672897197) internal successors, (796), 535 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:48,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 796 transitions. [2022-07-22 11:17:48,933 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 796 transitions. Word has length 142 [2022-07-22 11:17:48,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:17:48,933 INFO L495 AbstractCegarLoop]: Abstraction has 536 states and 796 transitions. [2022-07-22 11:17:48,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:48,934 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 796 transitions. [2022-07-22 11:17:48,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-22 11:17:48,935 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:17:48,935 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:17:48,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-07-22 11:17:48,935 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:17:48,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:17:48,936 INFO L85 PathProgramCache]: Analyzing trace with hash -773365661, now seen corresponding path program 1 times [2022-07-22 11:17:48,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:17:48,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073061547] [2022-07-22 11:17:48,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:17:48,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:17:48,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:17:49,009 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-07-22 11:17:49,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:17:49,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073061547] [2022-07-22 11:17:49,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073061547] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:17:49,010 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:17:49,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:17:49,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777712922] [2022-07-22 11:17:49,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:17:49,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:17:49,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:17:49,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:17:49,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:17:49,012 INFO L87 Difference]: Start difference. First operand 536 states and 796 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:49,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:17:49,425 INFO L93 Difference]: Finished difference Result 1075 states and 1598 transitions. [2022-07-22 11:17:49,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:17:49,426 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 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 145 [2022-07-22 11:17:49,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:17:49,427 INFO L225 Difference]: With dead ends: 1075 [2022-07-22 11:17:49,428 INFO L226 Difference]: Without dead ends: 560 [2022-07-22 11:17:49,438 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 11:17:49,439 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 53 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-22 11:17:49,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 497 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-22 11:17:49,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2022-07-22 11:17:49,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 536. [2022-07-22 11:17:49,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 535 states have (on average 1.485981308411215) internal successors, (795), 535 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:49,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 795 transitions. [2022-07-22 11:17:49,469 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 795 transitions. Word has length 145 [2022-07-22 11:17:49,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:17:49,470 INFO L495 AbstractCegarLoop]: Abstraction has 536 states and 795 transitions. [2022-07-22 11:17:49,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:49,470 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 795 transitions. [2022-07-22 11:17:49,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-22 11:17:49,471 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:17:49,471 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:17:49,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-07-22 11:17:49,471 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:17:49,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:17:49,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1914296137, now seen corresponding path program 1 times [2022-07-22 11:17:49,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:17:49,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320288638] [2022-07-22 11:17:49,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:17:49,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:17:49,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:17:49,549 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-07-22 11:17:49,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:17:49,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320288638] [2022-07-22 11:17:49,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320288638] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:17:49,550 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:17:49,550 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:17:49,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979546499] [2022-07-22 11:17:49,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:17:49,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:17:49,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:17:49,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:17:49,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:17:49,551 INFO L87 Difference]: Start difference. First operand 536 states and 795 transitions. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:50,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:17:50,184 INFO L93 Difference]: Finished difference Result 1110 states and 1646 transitions. [2022-07-22 11:17:50,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:17:50,184 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2022-07-22 11:17:50,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:17:50,186 INFO L225 Difference]: With dead ends: 1110 [2022-07-22 11:17:50,186 INFO L226 Difference]: Without dead ends: 595 [2022-07-22 11:17:50,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 11:17:50,187 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 112 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-22 11:17:50,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 338 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-22 11:17:50,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2022-07-22 11:17:50,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 536. [2022-07-22 11:17:50,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 535 states have (on average 1.4710280373831777) internal successors, (787), 535 states have internal predecessors, (787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:50,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 787 transitions. [2022-07-22 11:17:50,196 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 787 transitions. Word has length 146 [2022-07-22 11:17:50,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:17:50,197 INFO L495 AbstractCegarLoop]: Abstraction has 536 states and 787 transitions. [2022-07-22 11:17:50,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:50,197 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 787 transitions. [2022-07-22 11:17:50,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-07-22 11:17:50,198 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:17:50,198 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:17:50,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-07-22 11:17:50,198 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:17:50,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:17:50,199 INFO L85 PathProgramCache]: Analyzing trace with hash 436551973, now seen corresponding path program 1 times [2022-07-22 11:17:50,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:17:50,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612481169] [2022-07-22 11:17:50,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:17:50,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:17:50,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:17:50,299 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-07-22 11:17:50,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:17:50,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612481169] [2022-07-22 11:17:50,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612481169] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:17:50,299 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:17:50,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:17:50,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928848340] [2022-07-22 11:17:50,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:17:50,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:17:50,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:17:50,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:17:50,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:17:50,301 INFO L87 Difference]: Start difference. First operand 536 states and 787 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:51,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:17:51,385 INFO L93 Difference]: Finished difference Result 1073 states and 1577 transitions. [2022-07-22 11:17:51,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:17:51,385 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 148 [2022-07-22 11:17:51,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:17:51,387 INFO L225 Difference]: With dead ends: 1073 [2022-07-22 11:17:51,387 INFO L226 Difference]: Without dead ends: 558 [2022-07-22 11:17:51,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 11:17:51,388 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 41 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-22 11:17:51,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 503 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-22 11:17:51,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2022-07-22 11:17:51,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 536. [2022-07-22 11:17:51,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 535 states have (on average 1.469158878504673) internal successors, (786), 535 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:51,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 786 transitions. [2022-07-22 11:17:51,398 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 786 transitions. Word has length 148 [2022-07-22 11:17:51,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:17:51,398 INFO L495 AbstractCegarLoop]: Abstraction has 536 states and 786 transitions. [2022-07-22 11:17:51,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:51,398 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 786 transitions. [2022-07-22 11:17:51,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-07-22 11:17:51,399 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:17:51,400 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-22 11:17:51,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-07-22 11:17:51,400 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:17:51,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:17:51,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1682736421, now seen corresponding path program 1 times [2022-07-22 11:17:51,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:17:51,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568903938] [2022-07-22 11:17:51,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:17:51,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:17:51,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:17:51,476 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 140 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-07-22 11:17:51,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:17:51,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568903938] [2022-07-22 11:17:51,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568903938] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:17:51,477 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:17:51,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:17:51,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031736791] [2022-07-22 11:17:51,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:17:51,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:17:51,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:17:51,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:17:51,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:17:51,479 INFO L87 Difference]: Start difference. First operand 536 states and 786 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:52,910 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 11:17:53,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:17:53,166 INFO L93 Difference]: Finished difference Result 1152 states and 1692 transitions. [2022-07-22 11:17:53,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:17:53,167 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 148 [2022-07-22 11:17:53,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:17:53,168 INFO L225 Difference]: With dead ends: 1152 [2022-07-22 11:17:53,168 INFO L226 Difference]: Without dead ends: 637 [2022-07-22 11:17:53,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 11:17:53,169 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 105 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-22 11:17:53,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 338 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-22 11:17:53,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2022-07-22 11:17:53,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 569. [2022-07-22 11:17:53,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 568 states have (on average 1.4630281690140845) internal successors, (831), 568 states have internal predecessors, (831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:53,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 831 transitions. [2022-07-22 11:17:53,179 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 831 transitions. Word has length 148 [2022-07-22 11:17:53,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:17:53,180 INFO L495 AbstractCegarLoop]: Abstraction has 569 states and 831 transitions. [2022-07-22 11:17:53,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:53,180 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 831 transitions. [2022-07-22 11:17:53,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-07-22 11:17:53,181 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:17:53,181 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-22 11:17:53,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-07-22 11:17:53,181 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:17:53,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:17:53,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1171061050, now seen corresponding path program 1 times [2022-07-22 11:17:53,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:17:53,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440066594] [2022-07-22 11:17:53,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:17:53,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:17:53,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:17:53,294 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-07-22 11:17:53,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:17:53,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440066594] [2022-07-22 11:17:53,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440066594] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:17:53,294 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:17:53,294 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:17:53,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047478526] [2022-07-22 11:17:53,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:17:53,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:17:53,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:17:53,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:17:53,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:17:53,296 INFO L87 Difference]: Start difference. First operand 569 states and 831 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:53,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:17:53,843 INFO L93 Difference]: Finished difference Result 1176 states and 1718 transitions. [2022-07-22 11:17:53,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:17:53,843 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 149 [2022-07-22 11:17:53,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:17:53,845 INFO L225 Difference]: With dead ends: 1176 [2022-07-22 11:17:53,845 INFO L226 Difference]: Without dead ends: 628 [2022-07-22 11:17:53,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 11:17:53,846 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 104 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-22 11:17:53,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 338 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-22 11:17:53,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2022-07-22 11:17:53,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 569. [2022-07-22 11:17:53,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 568 states have (on average 1.454225352112676) internal successors, (826), 568 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:53,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 826 transitions. [2022-07-22 11:17:53,855 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 826 transitions. Word has length 149 [2022-07-22 11:17:53,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:17:53,856 INFO L495 AbstractCegarLoop]: Abstraction has 569 states and 826 transitions. [2022-07-22 11:17:53,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:53,856 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 826 transitions. [2022-07-22 11:17:53,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-07-22 11:17:53,857 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:17:53,857 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:17:53,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-07-22 11:17:53,857 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:17:53,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:17:53,858 INFO L85 PathProgramCache]: Analyzing trace with hash -2111739750, now seen corresponding path program 1 times [2022-07-22 11:17:53,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:17:53,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464319496] [2022-07-22 11:17:53,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:17:53,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:17:53,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:17:53,934 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-07-22 11:17:53,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:17:53,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464319496] [2022-07-22 11:17:53,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464319496] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:17:53,934 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:17:53,934 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:17:53,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660745232] [2022-07-22 11:17:53,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:17:53,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:17:53,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:17:53,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:17:53,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:17:53,936 INFO L87 Difference]: Start difference. First operand 569 states and 826 transitions. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:54,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:17:54,533 INFO L93 Difference]: Finished difference Result 1176 states and 1708 transitions. [2022-07-22 11:17:54,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:17:54,534 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 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 149 [2022-07-22 11:17:54,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:17:54,535 INFO L225 Difference]: With dead ends: 1176 [2022-07-22 11:17:54,535 INFO L226 Difference]: Without dead ends: 628 [2022-07-22 11:17:54,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 11:17:54,536 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 101 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-22 11:17:54,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 338 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-22 11:17:54,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2022-07-22 11:17:54,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 569. [2022-07-22 11:17:54,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 568 states have (on average 1.4454225352112675) internal successors, (821), 568 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:54,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 821 transitions. [2022-07-22 11:17:54,546 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 821 transitions. Word has length 149 [2022-07-22 11:17:54,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:17:54,546 INFO L495 AbstractCegarLoop]: Abstraction has 569 states and 821 transitions. [2022-07-22 11:17:54,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:54,546 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 821 transitions. [2022-07-22 11:17:54,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-07-22 11:17:54,547 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:17:54,547 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:17:54,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-07-22 11:17:54,547 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:17:54,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:17:54,548 INFO L85 PathProgramCache]: Analyzing trace with hash 111887274, now seen corresponding path program 1 times [2022-07-22 11:17:54,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:17:54,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469700382] [2022-07-22 11:17:54,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:17:54,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:17:54,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:17:54,625 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 156 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-07-22 11:17:54,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:17:54,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469700382] [2022-07-22 11:17:54,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469700382] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:17:54,625 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:17:54,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:17:54,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803996686] [2022-07-22 11:17:54,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:17:54,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:17:54,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:17:54,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:17:54,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:17:54,627 INFO L87 Difference]: Start difference. First operand 569 states and 821 transitions. Second operand has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:55,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:17:55,777 INFO L93 Difference]: Finished difference Result 1176 states and 1698 transitions. [2022-07-22 11:17:55,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:17:55,778 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 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 158 [2022-07-22 11:17:55,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:17:55,779 INFO L225 Difference]: With dead ends: 1176 [2022-07-22 11:17:55,780 INFO L226 Difference]: Without dead ends: 628 [2022-07-22 11:17:55,780 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 11:17:55,781 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 97 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-22 11:17:55,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 338 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-22 11:17:55,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2022-07-22 11:17:55,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 566. [2022-07-22 11:17:55,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 565 states have (on average 1.4424778761061947) internal successors, (815), 565 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:55,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 815 transitions. [2022-07-22 11:17:55,794 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 815 transitions. Word has length 158 [2022-07-22 11:17:55,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:17:55,794 INFO L495 AbstractCegarLoop]: Abstraction has 566 states and 815 transitions. [2022-07-22 11:17:55,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:55,794 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 815 transitions. [2022-07-22 11:17:55,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-07-22 11:17:55,795 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:17:55,795 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:17:55,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-07-22 11:17:55,796 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:17:55,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:17:55,798 INFO L85 PathProgramCache]: Analyzing trace with hash 138370680, now seen corresponding path program 1 times [2022-07-22 11:17:55,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:17:55,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344266409] [2022-07-22 11:17:55,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:17:55,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:17:55,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:17:55,928 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2022-07-22 11:17:55,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:17:55,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344266409] [2022-07-22 11:17:55,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344266409] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:17:55,929 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:17:55,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 11:17:55,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636477500] [2022-07-22 11:17:55,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:17:55,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 11:17:55,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:17:55,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 11:17:55,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 11:17:55,930 INFO L87 Difference]: Start difference. First operand 566 states and 815 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:55,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:17:55,963 INFO L93 Difference]: Finished difference Result 1650 states and 2389 transitions. [2022-07-22 11:17:55,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 11:17:55,964 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 166 [2022-07-22 11:17:55,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:17:55,967 INFO L225 Difference]: With dead ends: 1650 [2022-07-22 11:17:55,967 INFO L226 Difference]: Without dead ends: 1105 [2022-07-22 11:17:55,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 11:17:55,968 INFO L413 NwaCegarLoop]: 368 mSDtfsCounter, 139 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 557 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 11:17:55,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 557 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 11:17:55,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1105 states. [2022-07-22 11:17:55,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1105 to 1105. [2022-07-22 11:17:55,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1105 states, 1104 states have (on average 1.4420289855072463) internal successors, (1592), 1104 states have internal predecessors, (1592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:55,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1105 states to 1105 states and 1592 transitions. [2022-07-22 11:17:55,987 INFO L78 Accepts]: Start accepts. Automaton has 1105 states and 1592 transitions. Word has length 166 [2022-07-22 11:17:55,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:17:55,987 INFO L495 AbstractCegarLoop]: Abstraction has 1105 states and 1592 transitions. [2022-07-22 11:17:55,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:55,987 INFO L276 IsEmpty]: Start isEmpty. Operand 1105 states and 1592 transitions. [2022-07-22 11:17:55,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-22 11:17:55,989 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:17:55,989 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:17:55,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-07-22 11:17:55,989 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:17:55,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:17:55,989 INFO L85 PathProgramCache]: Analyzing trace with hash 234885032, now seen corresponding path program 1 times [2022-07-22 11:17:55,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:17:55,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492241164] [2022-07-22 11:17:55,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:17:55,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:17:56,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:17:56,072 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 160 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-07-22 11:17:56,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:17:56,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492241164] [2022-07-22 11:17:56,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492241164] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:17:56,073 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:17:56,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 11:17:56,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015663022] [2022-07-22 11:17:56,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:17:56,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 11:17:56,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:17:56,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 11:17:56,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 11:17:56,074 INFO L87 Difference]: Start difference. First operand 1105 states and 1592 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:56,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:17:56,127 INFO L93 Difference]: Finished difference Result 2693 states and 3889 transitions. [2022-07-22 11:17:56,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 11:17:56,128 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 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 167 [2022-07-22 11:17:56,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:17:56,131 INFO L225 Difference]: With dead ends: 2693 [2022-07-22 11:17:56,132 INFO L226 Difference]: Without dead ends: 1609 [2022-07-22 11:17:56,132 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 11:17:56,133 INFO L413 NwaCegarLoop]: 298 mSDtfsCounter, 132 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 11:17:56,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 487 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 11:17:56,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1609 states. [2022-07-22 11:17:56,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1609 to 1607. [2022-07-22 11:17:56,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1607 states, 1606 states have (on average 1.4414694894146949) internal successors, (2315), 1606 states have internal predecessors, (2315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:56,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1607 states to 1607 states and 2315 transitions. [2022-07-22 11:17:56,159 INFO L78 Accepts]: Start accepts. Automaton has 1607 states and 2315 transitions. Word has length 167 [2022-07-22 11:17:56,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:17:56,159 INFO L495 AbstractCegarLoop]: Abstraction has 1607 states and 2315 transitions. [2022-07-22 11:17:56,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:56,160 INFO L276 IsEmpty]: Start isEmpty. Operand 1607 states and 2315 transitions. [2022-07-22 11:17:56,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-22 11:17:56,161 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:17:56,161 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:17:56,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-07-22 11:17:56,162 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:17:56,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:17:56,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1802673043, now seen corresponding path program 1 times [2022-07-22 11:17:56,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:17:56,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738277308] [2022-07-22 11:17:56,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:17:56,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:17:56,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:17:56,238 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-22 11:17:56,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:17:56,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738277308] [2022-07-22 11:17:56,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738277308] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:17:56,239 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:17:56,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 11:17:56,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678512082] [2022-07-22 11:17:56,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:17:56,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 11:17:56,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:17:56,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 11:17:56,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 11:17:56,240 INFO L87 Difference]: Start difference. First operand 1607 states and 2315 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:56,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:17:56,284 INFO L93 Difference]: Finished difference Result 3688 states and 5325 transitions. [2022-07-22 11:17:56,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 11:17:56,285 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 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 168 [2022-07-22 11:17:56,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:17:56,290 INFO L225 Difference]: With dead ends: 3688 [2022-07-22 11:17:56,290 INFO L226 Difference]: Without dead ends: 2102 [2022-07-22 11:17:56,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 11:17:56,292 INFO L413 NwaCegarLoop]: 314 mSDtfsCounter, 134 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 11:17:56,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 503 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 11:17:56,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2102 states. [2022-07-22 11:17:56,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2102 to 2098. [2022-07-22 11:17:56,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2098 states, 2097 states have (on average 1.4430138292799237) internal successors, (3026), 2097 states have internal predecessors, (3026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:56,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2098 states to 2098 states and 3026 transitions. [2022-07-22 11:17:56,355 INFO L78 Accepts]: Start accepts. Automaton has 2098 states and 3026 transitions. Word has length 168 [2022-07-22 11:17:56,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:17:56,356 INFO L495 AbstractCegarLoop]: Abstraction has 2098 states and 3026 transitions. [2022-07-22 11:17:56,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:56,356 INFO L276 IsEmpty]: Start isEmpty. Operand 2098 states and 3026 transitions. [2022-07-22 11:17:56,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-22 11:17:56,358 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:17:56,358 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:17:56,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-07-22 11:17:56,359 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:17:56,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:17:56,359 INFO L85 PathProgramCache]: Analyzing trace with hash 1368167445, now seen corresponding path program 1 times [2022-07-22 11:17:56,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:17:56,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413337309] [2022-07-22 11:17:56,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:17:56,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:17:56,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:17:56,428 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2022-07-22 11:17:56,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:17:56,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413337309] [2022-07-22 11:17:56,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413337309] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:17:56,429 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:17:56,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 11:17:56,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120041777] [2022-07-22 11:17:56,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:17:56,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 11:17:56,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:17:56,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 11:17:56,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 11:17:56,430 INFO L87 Difference]: Start difference. First operand 2098 states and 3026 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:56,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:17:56,471 INFO L93 Difference]: Finished difference Result 4202 states and 6064 transitions. [2022-07-22 11:17:56,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 11:17:56,471 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 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 168 [2022-07-22 11:17:56,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:17:56,476 INFO L225 Difference]: With dead ends: 4202 [2022-07-22 11:17:56,476 INFO L226 Difference]: Without dead ends: 2125 [2022-07-22 11:17:56,478 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 11:17:56,478 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 15 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 11:17:56,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 404 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 11:17:56,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2125 states. [2022-07-22 11:17:56,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2125 to 2125. [2022-07-22 11:17:56,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2125 states, 2124 states have (on average 1.4411487758945387) internal successors, (3061), 2124 states have internal predecessors, (3061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:56,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2125 states to 2125 states and 3061 transitions. [2022-07-22 11:17:56,513 INFO L78 Accepts]: Start accepts. Automaton has 2125 states and 3061 transitions. Word has length 168 [2022-07-22 11:17:56,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:17:56,513 INFO L495 AbstractCegarLoop]: Abstraction has 2125 states and 3061 transitions. [2022-07-22 11:17:56,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:56,514 INFO L276 IsEmpty]: Start isEmpty. Operand 2125 states and 3061 transitions. [2022-07-22 11:17:56,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-22 11:17:56,516 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:17:56,516 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:17:56,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-07-22 11:17:56,516 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:17:56,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:17:56,517 INFO L85 PathProgramCache]: Analyzing trace with hash -995674217, now seen corresponding path program 1 times [2022-07-22 11:17:56,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:17:56,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456096245] [2022-07-22 11:17:56,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:17:56,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:17:56,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:17:56,600 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2022-07-22 11:17:56,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:17:56,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456096245] [2022-07-22 11:17:56,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456096245] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:17:56,601 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:17:56,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 11:17:56,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522369309] [2022-07-22 11:17:56,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:17:56,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 11:17:56,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:17:56,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 11:17:56,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 11:17:56,602 INFO L87 Difference]: Start difference. First operand 2125 states and 3061 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:56,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:17:56,636 INFO L93 Difference]: Finished difference Result 4231 states and 6100 transitions. [2022-07-22 11:17:56,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 11:17:56,637 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 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 168 [2022-07-22 11:17:56,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:17:56,642 INFO L225 Difference]: With dead ends: 4231 [2022-07-22 11:17:56,642 INFO L226 Difference]: Without dead ends: 2127 [2022-07-22 11:17:56,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 11:17:56,644 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 4 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 11:17:56,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 383 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 11:17:56,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2127 states. [2022-07-22 11:17:56,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2127 to 2127. [2022-07-22 11:17:56,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2127 states, 2126 states have (on average 1.4407337723424272) internal successors, (3063), 2126 states have internal predecessors, (3063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:56,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2127 states to 2127 states and 3063 transitions. [2022-07-22 11:17:56,680 INFO L78 Accepts]: Start accepts. Automaton has 2127 states and 3063 transitions. Word has length 168 [2022-07-22 11:17:56,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:17:56,680 INFO L495 AbstractCegarLoop]: Abstraction has 2127 states and 3063 transitions. [2022-07-22 11:17:56,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:56,681 INFO L276 IsEmpty]: Start isEmpty. Operand 2127 states and 3063 transitions. [2022-07-22 11:17:56,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-22 11:17:56,682 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:17:56,683 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2022-07-22 11:17:56,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-07-22 11:17:56,683 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:17:56,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:17:56,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1102630147, now seen corresponding path program 1 times [2022-07-22 11:17:56,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:17:56,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332846227] [2022-07-22 11:17:56,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:17:56,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:17:56,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:17:56,796 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 220 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-07-22 11:17:56,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:17:56,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332846227] [2022-07-22 11:17:56,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332846227] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:17:56,797 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:17:56,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:17:56,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942751778] [2022-07-22 11:17:56,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:17:56,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:17:56,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:17:56,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:17:56,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:17:56,799 INFO L87 Difference]: Start difference. First operand 2127 states and 3063 transitions. Second operand has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:57,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:17:57,376 INFO L93 Difference]: Finished difference Result 4616 states and 6625 transitions. [2022-07-22 11:17:57,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:17:57,377 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 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 179 [2022-07-22 11:17:57,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:17:57,384 INFO L225 Difference]: With dead ends: 4616 [2022-07-22 11:17:57,384 INFO L226 Difference]: Without dead ends: 2512 [2022-07-22 11:17:57,386 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 11:17:57,386 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 104 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-22 11:17:57,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 346 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-22 11:17:57,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2512 states. [2022-07-22 11:17:57,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2512 to 2247. [2022-07-22 11:17:57,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2247 states, 2246 states have (on average 1.4305431878895816) internal successors, (3213), 2246 states have internal predecessors, (3213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:57,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2247 states to 2247 states and 3213 transitions. [2022-07-22 11:17:57,424 INFO L78 Accepts]: Start accepts. Automaton has 2247 states and 3213 transitions. Word has length 179 [2022-07-22 11:17:57,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:17:57,425 INFO L495 AbstractCegarLoop]: Abstraction has 2247 states and 3213 transitions. [2022-07-22 11:17:57,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:57,425 INFO L276 IsEmpty]: Start isEmpty. Operand 2247 states and 3213 transitions. [2022-07-22 11:17:57,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-07-22 11:17:57,427 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:17:57,427 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2022-07-22 11:17:57,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-07-22 11:17:57,427 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:17:57,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:17:57,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1645851351, now seen corresponding path program 1 times [2022-07-22 11:17:57,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:17:57,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679047624] [2022-07-22 11:17:57,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:17:57,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:17:57,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:17:57,530 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 223 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-07-22 11:17:57,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:17:57,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679047624] [2022-07-22 11:17:57,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679047624] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:17:57,531 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:17:57,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:17:57,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970598855] [2022-07-22 11:17:57,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:17:57,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:17:57,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:17:57,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:17:57,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:17:57,532 INFO L87 Difference]: Start difference. First operand 2247 states and 3213 transitions. Second operand has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:58,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:17:58,206 INFO L93 Difference]: Finished difference Result 4556 states and 6513 transitions. [2022-07-22 11:17:58,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:17:58,207 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 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 180 [2022-07-22 11:17:58,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:17:58,210 INFO L225 Difference]: With dead ends: 4556 [2022-07-22 11:17:58,211 INFO L226 Difference]: Without dead ends: 2332 [2022-07-22 11:17:58,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 11:17:58,213 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 59 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 540 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-22 11:17:58,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 540 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-22 11:17:58,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2332 states. [2022-07-22 11:17:58,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2332 to 2247. [2022-07-22 11:17:58,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2247 states, 2246 states have (on average 1.429207479964381) internal successors, (3210), 2246 states have internal predecessors, (3210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:58,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2247 states to 2247 states and 3210 transitions. [2022-07-22 11:17:58,250 INFO L78 Accepts]: Start accepts. Automaton has 2247 states and 3210 transitions. Word has length 180 [2022-07-22 11:17:58,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:17:58,250 INFO L495 AbstractCegarLoop]: Abstraction has 2247 states and 3210 transitions. [2022-07-22 11:17:58,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:58,251 INFO L276 IsEmpty]: Start isEmpty. Operand 2247 states and 3210 transitions. [2022-07-22 11:17:58,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2022-07-22 11:17:58,253 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:17:58,253 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2022-07-22 11:17:58,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-07-22 11:17:58,253 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:17:58,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:17:58,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1897594940, now seen corresponding path program 1 times [2022-07-22 11:17:58,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:17:58,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528545378] [2022-07-22 11:17:58,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:17:58,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:17:58,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:17:58,335 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 217 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-07-22 11:17:58,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:17:58,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528545378] [2022-07-22 11:17:58,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528545378] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:17:58,335 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:17:58,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:17:58,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585205792] [2022-07-22 11:17:58,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:17:58,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:17:58,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:17:58,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:17:58,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:17:58,337 INFO L87 Difference]: Start difference. First operand 2247 states and 3210 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:58,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:17:58,985 INFO L93 Difference]: Finished difference Result 4688 states and 6683 transitions. [2022-07-22 11:17:58,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:17:58,986 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 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 183 [2022-07-22 11:17:58,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:17:58,990 INFO L225 Difference]: With dead ends: 4688 [2022-07-22 11:17:58,990 INFO L226 Difference]: Without dead ends: 2464 [2022-07-22 11:17:58,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 11:17:58,992 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 105 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-22 11:17:58,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 342 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-22 11:17:58,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2464 states. [2022-07-22 11:17:59,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2464 to 2247. [2022-07-22 11:17:59,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2247 states, 2246 states have (on average 1.4158504007123776) internal successors, (3180), 2246 states have internal predecessors, (3180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:59,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2247 states to 2247 states and 3180 transitions. [2022-07-22 11:17:59,030 INFO L78 Accepts]: Start accepts. Automaton has 2247 states and 3180 transitions. Word has length 183 [2022-07-22 11:17:59,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:17:59,031 INFO L495 AbstractCegarLoop]: Abstraction has 2247 states and 3180 transitions. [2022-07-22 11:17:59,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:17:59,031 INFO L276 IsEmpty]: Start isEmpty. Operand 2247 states and 3180 transitions. [2022-07-22 11:17:59,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-22 11:17:59,033 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:17:59,033 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:17:59,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-07-22 11:17:59,033 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:17:59,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:17:59,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1707338316, now seen corresponding path program 1 times [2022-07-22 11:17:59,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:17:59,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231732115] [2022-07-22 11:17:59,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:17:59,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:17:59,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:17:59,120 INFO L134 CoverageAnalysis]: Checked inductivity of 311 backedges. 240 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-07-22 11:17:59,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:17:59,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231732115] [2022-07-22 11:17:59,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231732115] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:17:59,121 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:17:59,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:17:59,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860727432] [2022-07-22 11:17:59,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:17:59,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:17:59,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:17:59,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:17:59,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:17:59,122 INFO L87 Difference]: Start difference. First operand 2247 states and 3180 transitions. Second operand has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:18:00,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:18:00,287 INFO L93 Difference]: Finished difference Result 4526 states and 6402 transitions. [2022-07-22 11:18:00,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:18:00,287 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 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 189 [2022-07-22 11:18:00,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:18:00,306 INFO L225 Difference]: With dead ends: 4526 [2022-07-22 11:18:00,315 INFO L226 Difference]: Without dead ends: 2302 [2022-07-22 11:18:00,317 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 11:18:00,317 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 43 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-22 11:18:00,318 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 560 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-22 11:18:00,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2302 states. [2022-07-22 11:18:00,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2302 to 2247. [2022-07-22 11:18:00,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2247 states, 2246 states have (on average 1.4145146927871772) internal successors, (3177), 2246 states have internal predecessors, (3177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:18:00,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2247 states to 2247 states and 3177 transitions. [2022-07-22 11:18:00,354 INFO L78 Accepts]: Start accepts. Automaton has 2247 states and 3177 transitions. Word has length 189 [2022-07-22 11:18:00,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:18:00,354 INFO L495 AbstractCegarLoop]: Abstraction has 2247 states and 3177 transitions. [2022-07-22 11:18:00,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:18:00,354 INFO L276 IsEmpty]: Start isEmpty. Operand 2247 states and 3177 transitions. [2022-07-22 11:18:00,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-22 11:18:00,356 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:18:00,356 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:18:00,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-07-22 11:18:00,357 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:18:00,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:18:00,357 INFO L85 PathProgramCache]: Analyzing trace with hash -1760759993, now seen corresponding path program 1 times [2022-07-22 11:18:00,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:18:00,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797276087] [2022-07-22 11:18:00,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:18:00,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:18:00,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:18:00,446 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 256 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2022-07-22 11:18:00,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:18:00,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797276087] [2022-07-22 11:18:00,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797276087] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:18:00,447 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:18:00,447 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:18:00,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198801199] [2022-07-22 11:18:00,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:18:00,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:18:00,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:18:00,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:18:00,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:18:00,449 INFO L87 Difference]: Start difference. First operand 2247 states and 3177 transitions. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:18:02,463 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 11:18:02,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:18:02,781 INFO L93 Difference]: Finished difference Result 4688 states and 6617 transitions. [2022-07-22 11:18:02,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:18:02,782 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 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 189 [2022-07-22 11:18:02,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:18:02,785 INFO L225 Difference]: With dead ends: 4688 [2022-07-22 11:18:02,785 INFO L226 Difference]: Without dead ends: 2464 [2022-07-22 11:18:02,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 11:18:02,787 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 103 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 53 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-22 11:18:02,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 346 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 241 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-07-22 11:18:02,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2464 states. [2022-07-22 11:18:02,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2464 to 2247. [2022-07-22 11:18:02,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2247 states, 2246 states have (on average 1.404274265360641) internal successors, (3154), 2246 states have internal predecessors, (3154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:18:02,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2247 states to 2247 states and 3154 transitions. [2022-07-22 11:18:02,833 INFO L78 Accepts]: Start accepts. Automaton has 2247 states and 3154 transitions. Word has length 189 [2022-07-22 11:18:02,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:18:02,833 INFO L495 AbstractCegarLoop]: Abstraction has 2247 states and 3154 transitions. [2022-07-22 11:18:02,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:18:02,833 INFO L276 IsEmpty]: Start isEmpty. Operand 2247 states and 3154 transitions. [2022-07-22 11:18:02,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2022-07-22 11:18:02,836 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:18:02,836 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 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] [2022-07-22 11:18:02,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-07-22 11:18:02,836 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:18:02,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:18:02,836 INFO L85 PathProgramCache]: Analyzing trace with hash 867563374, now seen corresponding path program 1 times [2022-07-22 11:18:02,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:18:02,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858297717] [2022-07-22 11:18:02,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:18:02,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:18:03,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:18:03,183 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2022-07-22 11:18:03,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:18:03,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858297717] [2022-07-22 11:18:03,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858297717] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:18:03,184 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:18:03,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 11:18:03,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624724067] [2022-07-22 11:18:03,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:18:03,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 11:18:03,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:18:03,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 11:18:03,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 11:18:03,185 INFO L87 Difference]: Start difference. First operand 2247 states and 3154 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:18:05,014 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 11:18:05,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:18:05,521 INFO L93 Difference]: Finished difference Result 4491 states and 6304 transitions. [2022-07-22 11:18:05,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 11:18:05,522 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 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 191 [2022-07-22 11:18:05,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:18:05,525 INFO L225 Difference]: With dead ends: 4491 [2022-07-22 11:18:05,525 INFO L226 Difference]: Without dead ends: 2247 [2022-07-22 11:18:05,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-22 11:18:05,527 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 7 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-22 11:18:05,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 647 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-22 11:18:05,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2247 states. [2022-07-22 11:18:05,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2247 to 2247. [2022-07-22 11:18:05,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2247 states, 2246 states have (on average 1.4038290293855744) internal successors, (3153), 2246 states have internal predecessors, (3153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:18:05,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2247 states to 2247 states and 3153 transitions. [2022-07-22 11:18:05,566 INFO L78 Accepts]: Start accepts. Automaton has 2247 states and 3153 transitions. Word has length 191 [2022-07-22 11:18:05,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:18:05,566 INFO L495 AbstractCegarLoop]: Abstraction has 2247 states and 3153 transitions. [2022-07-22 11:18:05,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:18:05,566 INFO L276 IsEmpty]: Start isEmpty. Operand 2247 states and 3153 transitions. [2022-07-22 11:18:05,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2022-07-22 11:18:05,568 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:18:05,568 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 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] [2022-07-22 11:18:05,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-07-22 11:18:05,569 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:18:05,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:18:05,569 INFO L85 PathProgramCache]: Analyzing trace with hash 990845040, now seen corresponding path program 1 times [2022-07-22 11:18:05,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:18:05,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555122664] [2022-07-22 11:18:05,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:18:05,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:18:06,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:18:06,930 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 26 proven. 183 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2022-07-22 11:18:06,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:18:06,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555122664] [2022-07-22 11:18:06,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555122664] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 11:18:06,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1549277830] [2022-07-22 11:18:06,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:18:06,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 11:18:06,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 11:18:06,933 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) [2022-07-22 11:18:06,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 11:18:07,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:18:08,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 1225 conjuncts, 163 conjunts are in the unsatisfiable core [2022-07-22 11:18:08,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 11:18:08,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:18:08,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:18:08,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:18:08,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:18:08,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:18:08,479 INFO L356 Elim1Store]: treesize reduction 1040, result has 8.0 percent of original size [2022-07-22 11:18:08,481 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 10 case distinctions, treesize of input 31556846 treesize of output 6795388 [2022-07-22 11:18:09,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:18:09,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:18:09,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:18:10,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:18:10,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:19:29,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:19:29,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:19:29,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:19:30,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:19:30,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:19:30,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:19:38,302 INFO L244 Elim1Store]: Index analysis took 8527 ms