./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/openssl-simplified/s3_clnt_3.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8d31f386 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-simplified/s3_clnt_3.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 c45c2e72fe5956609ac14f38b7bc5b3490c2942a ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.multireach-323-8d31f38 [2021-07-04 18:05:16,175 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-04 18:05:16,177 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-04 18:05:16,200 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-04 18:05:16,201 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-04 18:05:16,202 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-04 18:05:16,204 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-04 18:05:16,205 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-04 18:05:16,212 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-04 18:05:16,213 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-04 18:05:16,214 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-04 18:05:16,215 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-04 18:05:16,215 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-04 18:05:16,216 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-04 18:05:16,217 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-04 18:05:16,218 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-04 18:05:16,219 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-04 18:05:16,220 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-04 18:05:16,221 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-04 18:05:16,225 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-04 18:05:16,228 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-04 18:05:16,229 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-04 18:05:16,230 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-04 18:05:16,231 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-04 18:05:16,233 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-04 18:05:16,233 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-04 18:05:16,234 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-04 18:05:16,234 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-04 18:05:16,235 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-04 18:05:16,235 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-04 18:05:16,236 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-04 18:05:16,236 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-04 18:05:16,237 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-04 18:05:16,237 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-04 18:05:16,238 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-04 18:05:16,238 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-04 18:05:16,239 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-04 18:05:16,239 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-04 18:05:16,239 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-04 18:05:16,240 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-04 18:05:16,248 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-04 18:05:16,249 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-07-04 18:05:16,287 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-04 18:05:16,288 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-04 18:05:16,290 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-04 18:05:16,290 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-04 18:05:16,290 INFO L138 SettingsManager]: * Use SBE=true [2021-07-04 18:05:16,291 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-04 18:05:16,291 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-04 18:05:16,291 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-04 18:05:16,292 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-04 18:05:16,292 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-04 18:05:16,293 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-04 18:05:16,293 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-04 18:05:16,293 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-04 18:05:16,293 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-04 18:05:16,293 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-04 18:05:16,293 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-04 18:05:16,294 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-04 18:05:16,294 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-04 18:05:16,294 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-04 18:05:16,294 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-04 18:05:16,294 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-04 18:05:16,295 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-04 18:05:16,295 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-04 18:05:16,295 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-04 18:05:16,295 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-04 18:05:16,295 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-04 18:05:16,295 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-04 18:05:16,296 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-07-04 18:05:16,296 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c45c2e72fe5956609ac14f38b7bc5b3490c2942a [2021-07-04 18:05:16,591 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-04 18:05:16,608 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-04 18:05:16,610 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-04 18:05:16,612 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-04 18:05:16,619 INFO L275 PluginConnector]: CDTParser initialized [2021-07-04 18:05:16,620 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/openssl-simplified/s3_clnt_3.cil-2.c [2021-07-04 18:05:16,683 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4032aff2/a8473d967be04758ab88d5076ba13266/FLAG0f4185b17 [2021-07-04 18:05:17,120 INFO L306 CDTParser]: Found 1 translation units. [2021-07-04 18:05:17,121 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/openssl-simplified/s3_clnt_3.cil-2.c [2021-07-04 18:05:17,130 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4032aff2/a8473d967be04758ab88d5076ba13266/FLAG0f4185b17 [2021-07-04 18:05:17,144 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4032aff2/a8473d967be04758ab88d5076ba13266 [2021-07-04 18:05:17,147 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-04 18:05:17,148 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-07-04 18:05:17,149 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-04 18:05:17,150 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-04 18:05:17,153 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-04 18:05:17,153 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.07 06:05:17" (1/1) ... [2021-07-04 18:05:17,154 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@397dfba4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 06:05:17, skipping insertion in model container [2021-07-04 18:05:17,155 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.07 06:05:17" (1/1) ... [2021-07-04 18:05:17,160 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-04 18:05:17,187 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-04 18:05:17,409 WARN L224 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-simplified/s3_clnt_3.cil-2.c[37274,37287] [2021-07-04 18:05:17,415 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-04 18:05:17,422 INFO L203 MainTranslator]: Completed pre-run [2021-07-04 18:05:17,460 WARN L224 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-simplified/s3_clnt_3.cil-2.c[37274,37287] [2021-07-04 18:05:17,463 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-04 18:05:17,474 INFO L208 MainTranslator]: Completed translation [2021-07-04 18:05:17,475 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 06:05:17 WrapperNode [2021-07-04 18:05:17,475 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-04 18:05:17,476 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-04 18:05:17,476 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-04 18:05:17,477 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-04 18:05:17,482 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 06:05:17" (1/1) ... [2021-07-04 18:05:17,491 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 06:05:17" (1/1) ... [2021-07-04 18:05:17,522 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-04 18:05:17,523 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-04 18:05:17,523 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-04 18:05:17,523 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-04 18:05:17,530 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 06:05:17" (1/1) ... [2021-07-04 18:05:17,530 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 06:05:17" (1/1) ... [2021-07-04 18:05:17,533 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 06:05:17" (1/1) ... [2021-07-04 18:05:17,534 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 06:05:17" (1/1) ... [2021-07-04 18:05:17,541 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 06:05:17" (1/1) ... [2021-07-04 18:05:17,547 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 06:05:17" (1/1) ... [2021-07-04 18:05:17,550 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 06:05:17" (1/1) ... [2021-07-04 18:05:17,553 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-04 18:05:17,554 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-04 18:05:17,555 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-04 18:05:17,555 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-04 18:05:17,555 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 06:05:17" (1/1) ... [2021-07-04 18:05:17,561 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-04 18:05:17,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-04 18:05:17,593 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-07-04 18:05:17,619 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-07-04 18:05:17,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-07-04 18:05:17,636 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-07-04 18:05:17,637 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-04 18:05:17,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-04 18:05:17,869 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-07-04 18:05:18,313 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2021-07-04 18:05:18,314 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2021-07-04 18:05:18,321 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-04 18:05:18,335 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-07-04 18:05:18,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.07 06:05:18 BoogieIcfgContainer [2021-07-04 18:05:18,337 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-04 18:05:18,339 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-04 18:05:18,339 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-04 18:05:18,341 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-04 18:05:18,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.07 06:05:17" (1/3) ... [2021-07-04 18:05:18,342 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b56f9cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.07 06:05:18, skipping insertion in model container [2021-07-04 18:05:18,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 06:05:17" (2/3) ... [2021-07-04 18:05:18,343 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b56f9cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.07 06:05:18, skipping insertion in model container [2021-07-04 18:05:18,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.07 06:05:18" (3/3) ... [2021-07-04 18:05:18,344 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_clnt_3.cil-2.c [2021-07-04 18:05:18,350 INFO L198 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-04 18:05:18,365 INFO L158 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-04 18:05:18,435 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION ======== [2021-07-04 18:05:18,443 INFO L329 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, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mLimitAnalysisTime=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-07-04 18:05:18,443 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-04 18:05:18,465 INFO L276 IsEmpty]: Start isEmpty. Operand has 128 states, 126 states have (on average 1.7142857142857142) internal successors, (216), 127 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-04 18:05:18,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-07-04 18:05:18,470 INFO L517 BasicCegarLoop]: Found error trace [2021-07-04 18:05:18,471 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-04 18:05:18,471 INFO L374 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-04 18:05:18,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-04 18:05:18,478 INFO L82 PathProgramCache]: Analyzing trace with hash -1457695038, now seen corresponding path program 1 times [2021-07-04 18:05:18,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-04 18:05:18,486 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934542918] [2021-07-04 18:05:18,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-04 18:05:18,487 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-04 18:05:18,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-04 18:05:18,719 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:18,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-04 18:05:18,721 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:18,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-04 18:05:18,733 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:18,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-04 18:05:18,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-04 18:05:18,735 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-04 18:05:18,736 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934542918] [2021-07-04 18:05:18,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934542918] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-04 18:05:18,737 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-04 18:05:18,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-04 18:05:18,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072745939] [2021-07-04 18:05:18,752 INFO L425 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-04 18:05:18,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-04 18:05:18,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-04 18:05:18,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-04 18:05:18,770 INFO L87 Difference]: Start difference. First operand has 128 states, 126 states have (on average 1.7142857142857142) internal successors, (216), 127 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-04 18:05:19,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-04 18:05:19,012 INFO L93 Difference]: Finished difference Result 284 states and 480 transitions. [2021-07-04 18:05:19,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-04 18:05:19,014 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-07-04 18:05:19,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-04 18:05:19,025 INFO L225 Difference]: With dead ends: 284 [2021-07-04 18:05:19,025 INFO L226 Difference]: Without dead ends: 140 [2021-07-04 18:05:19,027 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-04 18:05:19,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-07-04 18:05:19,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 135. [2021-07-04 18:05:19,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 134 states have (on average 1.5671641791044777) internal successors, (210), 134 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-04 18:05:19,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 210 transitions. [2021-07-04 18:05:19,062 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 210 transitions. Word has length 24 [2021-07-04 18:05:19,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-04 18:05:19,062 INFO L442 AbstractCegarLoop]: Abstraction has 135 states and 210 transitions. [2021-07-04 18:05:19,063 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-04 18:05:19,063 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 210 transitions. [2021-07-04 18:05:19,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-07-04 18:05:19,064 INFO L517 BasicCegarLoop]: Found error trace [2021-07-04 18:05:19,064 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-04 18:05:19,064 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-04 18:05:19,065 INFO L374 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-04 18:05:19,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-04 18:05:19,065 INFO L82 PathProgramCache]: Analyzing trace with hash 2051408279, now seen corresponding path program 1 times [2021-07-04 18:05:19,066 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-04 18:05:19,066 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123405686] [2021-07-04 18:05:19,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-04 18:05:19,066 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-04 18:05:19,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-04 18:05:19,121 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:19,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-04 18:05:19,123 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:19,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-04 18:05:19,127 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:19,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-04 18:05:19,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-04 18:05:19,128 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-04 18:05:19,128 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123405686] [2021-07-04 18:05:19,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123405686] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-04 18:05:19,128 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-04 18:05:19,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-04 18:05:19,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967599564] [2021-07-04 18:05:19,130 INFO L425 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-04 18:05:19,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-04 18:05:19,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-04 18:05:19,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-04 18:05:19,131 INFO L87 Difference]: Start difference. First operand 135 states and 210 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-04 18:05:19,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-04 18:05:19,301 INFO L93 Difference]: Finished difference Result 292 states and 458 transitions. [2021-07-04 18:05:19,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-04 18:05:19,302 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-07-04 18:05:19,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-04 18:05:19,306 INFO L225 Difference]: With dead ends: 292 [2021-07-04 18:05:19,307 INFO L226 Difference]: Without dead ends: 164 [2021-07-04 18:05:19,311 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-04 18:05:19,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2021-07-04 18:05:19,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 159. [2021-07-04 18:05:19,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 158 states have (on average 1.6012658227848102) internal successors, (253), 158 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-04 18:05:19,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 253 transitions. [2021-07-04 18:05:19,343 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 253 transitions. Word has length 25 [2021-07-04 18:05:19,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-04 18:05:19,344 INFO L442 AbstractCegarLoop]: Abstraction has 159 states and 253 transitions. [2021-07-04 18:05:19,344 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-04 18:05:19,345 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 253 transitions. [2021-07-04 18:05:19,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-07-04 18:05:19,348 INFO L517 BasicCegarLoop]: Found error trace [2021-07-04 18:05:19,348 INFO L525 BasicCegarLoop]: trace histogram [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] [2021-07-04 18:05:19,349 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-04 18:05:19,353 INFO L374 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-04 18:05:19,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-04 18:05:19,354 INFO L82 PathProgramCache]: Analyzing trace with hash 1217481658, now seen corresponding path program 1 times [2021-07-04 18:05:19,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-04 18:05:19,354 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702659468] [2021-07-04 18:05:19,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-04 18:05:19,355 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-04 18:05:19,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-04 18:05:19,434 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:19,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-04 18:05:19,435 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:19,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-04 18:05:19,442 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:19,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-04 18:05:19,443 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-04 18:05:19,443 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-04 18:05:19,443 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702659468] [2021-07-04 18:05:19,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702659468] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-04 18:05:19,444 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-04 18:05:19,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-04 18:05:19,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730199478] [2021-07-04 18:05:19,445 INFO L425 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-04 18:05:19,445 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-04 18:05:19,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-04 18:05:19,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-04 18:05:19,446 INFO L87 Difference]: Start difference. First operand 159 states and 253 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-04 18:05:19,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-04 18:05:19,586 INFO L93 Difference]: Finished difference Result 335 states and 537 transitions. [2021-07-04 18:05:19,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-04 18:05:19,587 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-07-04 18:05:19,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-04 18:05:19,589 INFO L225 Difference]: With dead ends: 335 [2021-07-04 18:05:19,589 INFO L226 Difference]: Without dead ends: 183 [2021-07-04 18:05:19,592 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-04 18:05:19,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-07-04 18:05:19,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 180. [2021-07-04 18:05:19,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 179 states have (on average 1.6145251396648044) internal successors, (289), 179 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-04 18:05:19,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 289 transitions. [2021-07-04 18:05:19,620 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 289 transitions. Word has length 44 [2021-07-04 18:05:19,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-04 18:05:19,621 INFO L442 AbstractCegarLoop]: Abstraction has 180 states and 289 transitions. [2021-07-04 18:05:19,621 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-04 18:05:19,621 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 289 transitions. [2021-07-04 18:05:19,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-07-04 18:05:19,624 INFO L517 BasicCegarLoop]: Found error trace [2021-07-04 18:05:19,624 INFO L525 BasicCegarLoop]: trace histogram [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] [2021-07-04 18:05:19,625 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-07-04 18:05:19,625 INFO L374 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-04 18:05:19,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-04 18:05:19,626 INFO L82 PathProgramCache]: Analyzing trace with hash -2096370001, now seen corresponding path program 1 times [2021-07-04 18:05:19,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-04 18:05:19,627 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758059671] [2021-07-04 18:05:19,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-04 18:05:19,628 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-04 18:05:19,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-04 18:05:19,672 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:19,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-04 18:05:19,673 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:19,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-04 18:05:19,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:19,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-04 18:05:19,682 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-04 18:05:19,682 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-04 18:05:19,683 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758059671] [2021-07-04 18:05:19,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758059671] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-04 18:05:19,684 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-04 18:05:19,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-04 18:05:19,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75426072] [2021-07-04 18:05:19,685 INFO L425 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-04 18:05:19,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-04 18:05:19,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-04 18:05:19,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-04 18:05:19,687 INFO L87 Difference]: Start difference. First operand 180 states and 289 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-04 18:05:19,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-04 18:05:19,845 INFO L93 Difference]: Finished difference Result 356 states and 571 transitions. [2021-07-04 18:05:19,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-04 18:05:19,846 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2021-07-04 18:05:19,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-04 18:05:19,847 INFO L225 Difference]: With dead ends: 356 [2021-07-04 18:05:19,847 INFO L226 Difference]: Without dead ends: 183 [2021-07-04 18:05:19,848 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-04 18:05:19,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-07-04 18:05:19,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 180. [2021-07-04 18:05:19,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 179 states have (on average 1.6033519553072626) internal successors, (287), 179 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-04 18:05:19,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 287 transitions. [2021-07-04 18:05:19,862 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 287 transitions. Word has length 45 [2021-07-04 18:05:19,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-04 18:05:19,862 INFO L442 AbstractCegarLoop]: Abstraction has 180 states and 287 transitions. [2021-07-04 18:05:19,863 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-04 18:05:19,863 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 287 transitions. [2021-07-04 18:05:19,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-07-04 18:05:19,865 INFO L517 BasicCegarLoop]: Found error trace [2021-07-04 18:05:19,865 INFO L525 BasicCegarLoop]: trace histogram [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] [2021-07-04 18:05:19,865 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-07-04 18:05:19,865 INFO L374 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-04 18:05:19,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-04 18:05:19,866 INFO L82 PathProgramCache]: Analyzing trace with hash -1259415046, now seen corresponding path program 1 times [2021-07-04 18:05:19,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-04 18:05:19,866 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982560356] [2021-07-04 18:05:19,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-04 18:05:19,867 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-04 18:05:19,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-04 18:05:19,921 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:19,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-04 18:05:19,928 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:19,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-04 18:05:19,932 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:19,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-04 18:05:19,934 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-07-04 18:05:19,935 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-04 18:05:19,935 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982560356] [2021-07-04 18:05:19,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982560356] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-04 18:05:19,935 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-04 18:05:19,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-04 18:05:19,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928180867] [2021-07-04 18:05:19,937 INFO L425 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-04 18:05:19,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-04 18:05:19,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-04 18:05:19,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-04 18:05:19,939 INFO L87 Difference]: Start difference. First operand 180 states and 287 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-04 18:05:20,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-04 18:05:20,065 INFO L93 Difference]: Finished difference Result 378 states and 605 transitions. [2021-07-04 18:05:20,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-04 18:05:20,066 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 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 [2021-07-04 18:05:20,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-04 18:05:20,067 INFO L225 Difference]: With dead ends: 378 [2021-07-04 18:05:20,067 INFO L226 Difference]: Without dead ends: 205 [2021-07-04 18:05:20,068 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-04 18:05:20,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2021-07-04 18:05:20,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 200. [2021-07-04 18:05:20,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 199 states have (on average 1.6030150753768844) internal successors, (319), 199 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-04 18:05:20,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 319 transitions. [2021-07-04 18:05:20,076 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 319 transitions. Word has length 61 [2021-07-04 18:05:20,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-04 18:05:20,076 INFO L442 AbstractCegarLoop]: Abstraction has 200 states and 319 transitions. [2021-07-04 18:05:20,076 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-04 18:05:20,077 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 319 transitions. [2021-07-04 18:05:20,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-07-04 18:05:20,078 INFO L517 BasicCegarLoop]: Found error trace [2021-07-04 18:05:20,078 INFO L525 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2021-07-04 18:05:20,078 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-07-04 18:05:20,078 INFO L374 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-04 18:05:20,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-04 18:05:20,079 INFO L82 PathProgramCache]: Analyzing trace with hash -1518033147, now seen corresponding path program 1 times [2021-07-04 18:05:20,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-04 18:05:20,079 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633901160] [2021-07-04 18:05:20,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-04 18:05:20,080 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-04 18:05:20,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-04 18:05:20,111 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:20,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-04 18:05:20,112 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:20,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-04 18:05:20,115 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:20,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-04 18:05:20,116 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-07-04 18:05:20,117 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-04 18:05:20,117 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633901160] [2021-07-04 18:05:20,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633901160] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-04 18:05:20,117 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-04 18:05:20,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-04 18:05:20,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695201041] [2021-07-04 18:05:20,118 INFO L425 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-04 18:05:20,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-04 18:05:20,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-04 18:05:20,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-04 18:05:20,119 INFO L87 Difference]: Start difference. First operand 200 states and 319 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-04 18:05:20,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-04 18:05:20,241 INFO L93 Difference]: Finished difference Result 398 states and 634 transitions. [2021-07-04 18:05:20,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-04 18:05:20,242 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 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 62 [2021-07-04 18:05:20,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-04 18:05:20,243 INFO L225 Difference]: With dead ends: 398 [2021-07-04 18:05:20,243 INFO L226 Difference]: Without dead ends: 205 [2021-07-04 18:05:20,244 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-04 18:05:20,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2021-07-04 18:05:20,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 200. [2021-07-04 18:05:20,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 199 states have (on average 1.5879396984924623) internal successors, (316), 199 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-04 18:05:20,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 316 transitions. [2021-07-04 18:05:20,254 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 316 transitions. Word has length 62 [2021-07-04 18:05:20,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-04 18:05:20,255 INFO L442 AbstractCegarLoop]: Abstraction has 200 states and 316 transitions. [2021-07-04 18:05:20,255 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-04 18:05:20,255 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 316 transitions. [2021-07-04 18:05:20,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-07-04 18:05:20,256 INFO L517 BasicCegarLoop]: Found error trace [2021-07-04 18:05:20,256 INFO L525 BasicCegarLoop]: trace histogram [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] [2021-07-04 18:05:20,256 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-07-04 18:05:20,257 INFO L374 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-04 18:05:20,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-04 18:05:20,257 INFO L82 PathProgramCache]: Analyzing trace with hash -844399215, now seen corresponding path program 1 times [2021-07-04 18:05:20,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-04 18:05:20,257 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989576521] [2021-07-04 18:05:20,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-04 18:05:20,258 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-04 18:05:20,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-04 18:05:20,330 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:20,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-04 18:05:20,331 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:20,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-04 18:05:20,334 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:20,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-04 18:05:20,335 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-04 18:05:20,335 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-04 18:05:20,336 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989576521] [2021-07-04 18:05:20,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989576521] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-04 18:05:20,336 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-04 18:05:20,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-04 18:05:20,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125978036] [2021-07-04 18:05:20,337 INFO L425 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-04 18:05:20,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-04 18:05:20,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-04 18:05:20,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-04 18:05:20,337 INFO L87 Difference]: Start difference. First operand 200 states and 316 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-04 18:05:20,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-04 18:05:20,483 INFO L93 Difference]: Finished difference Result 435 states and 693 transitions. [2021-07-04 18:05:20,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-04 18:05:20,483 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2021-07-04 18:05:20,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-04 18:05:20,485 INFO L225 Difference]: With dead ends: 435 [2021-07-04 18:05:20,485 INFO L226 Difference]: Without dead ends: 241 [2021-07-04 18:05:20,486 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-04 18:05:20,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2021-07-04 18:05:20,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2021-07-04 18:05:20,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 240 states have (on average 1.6083333333333334) internal successors, (386), 240 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-04 18:05:20,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 386 transitions. [2021-07-04 18:05:20,493 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 386 transitions. Word has length 63 [2021-07-04 18:05:20,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-04 18:05:20,494 INFO L442 AbstractCegarLoop]: Abstraction has 241 states and 386 transitions. [2021-07-04 18:05:20,494 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-04 18:05:20,494 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 386 transitions. [2021-07-04 18:05:20,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-07-04 18:05:20,495 INFO L517 BasicCegarLoop]: Found error trace [2021-07-04 18:05:20,495 INFO L525 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2021-07-04 18:05:20,495 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-07-04 18:05:20,495 INFO L374 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-04 18:05:20,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-04 18:05:20,496 INFO L82 PathProgramCache]: Analyzing trace with hash -1762942522, now seen corresponding path program 1 times [2021-07-04 18:05:20,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-04 18:05:20,496 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106530654] [2021-07-04 18:05:20,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-04 18:05:20,496 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-04 18:05:20,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-04 18:05:20,519 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:20,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-04 18:05:20,520 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:20,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-04 18:05:20,523 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:20,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-04 18:05:20,524 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-07-04 18:05:20,524 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-04 18:05:20,524 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106530654] [2021-07-04 18:05:20,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106530654] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-04 18:05:20,524 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-04 18:05:20,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-04 18:05:20,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566498036] [2021-07-04 18:05:20,525 INFO L425 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-04 18:05:20,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-04 18:05:20,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-04 18:05:20,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-04 18:05:20,526 INFO L87 Difference]: Start difference. First operand 241 states and 386 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-04 18:05:20,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-04 18:05:20,643 INFO L93 Difference]: Finished difference Result 497 states and 799 transitions. [2021-07-04 18:05:20,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-04 18:05:20,643 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-07-04 18:05:20,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-04 18:05:20,645 INFO L225 Difference]: With dead ends: 497 [2021-07-04 18:05:20,645 INFO L226 Difference]: Without dead ends: 263 [2021-07-04 18:05:20,646 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-04 18:05:20,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2021-07-04 18:05:20,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 258. [2021-07-04 18:05:20,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 257 states have (on average 1.5992217898832686) internal successors, (411), 257 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-04 18:05:20,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 411 transitions. [2021-07-04 18:05:20,655 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 411 transitions. Word has length 78 [2021-07-04 18:05:20,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-04 18:05:20,655 INFO L442 AbstractCegarLoop]: Abstraction has 258 states and 411 transitions. [2021-07-04 18:05:20,655 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-04 18:05:20,655 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 411 transitions. [2021-07-04 18:05:20,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-07-04 18:05:20,656 INFO L517 BasicCegarLoop]: Found error trace [2021-07-04 18:05:20,656 INFO L525 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2021-07-04 18:05:20,657 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-07-04 18:05:20,657 INFO L374 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-04 18:05:20,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-04 18:05:20,657 INFO L82 PathProgramCache]: Analyzing trace with hash -532125509, now seen corresponding path program 1 times [2021-07-04 18:05:20,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-04 18:05:20,658 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296163273] [2021-07-04 18:05:20,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-04 18:05:20,658 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-04 18:05:20,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-04 18:05:20,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:20,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-04 18:05:20,681 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:20,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-04 18:05:20,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:20,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-04 18:05:20,685 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-07-04 18:05:20,685 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-04 18:05:20,685 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296163273] [2021-07-04 18:05:20,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296163273] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-04 18:05:20,686 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-04 18:05:20,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-04 18:05:20,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764846952] [2021-07-04 18:05:20,686 INFO L425 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-04 18:05:20,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-04 18:05:20,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-04 18:05:20,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-04 18:05:20,687 INFO L87 Difference]: Start difference. First operand 258 states and 411 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-04 18:05:20,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-04 18:05:20,794 INFO L93 Difference]: Finished difference Result 514 states and 819 transitions. [2021-07-04 18:05:20,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-04 18:05:20,795 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 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 79 [2021-07-04 18:05:20,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-04 18:05:20,796 INFO L225 Difference]: With dead ends: 514 [2021-07-04 18:05:20,796 INFO L226 Difference]: Without dead ends: 263 [2021-07-04 18:05:20,797 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-04 18:05:20,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2021-07-04 18:05:20,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 258. [2021-07-04 18:05:20,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 257 states have (on average 1.5797665369649805) internal successors, (406), 257 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-04 18:05:20,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 406 transitions. [2021-07-04 18:05:20,805 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 406 transitions. Word has length 79 [2021-07-04 18:05:20,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-04 18:05:20,805 INFO L442 AbstractCegarLoop]: Abstraction has 258 states and 406 transitions. [2021-07-04 18:05:20,805 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-04 18:05:20,806 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 406 transitions. [2021-07-04 18:05:20,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-07-04 18:05:20,806 INFO L517 BasicCegarLoop]: Found error trace [2021-07-04 18:05:20,807 INFO L525 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 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] [2021-07-04 18:05:20,807 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-07-04 18:05:20,807 INFO L374 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-04 18:05:20,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-04 18:05:20,808 INFO L82 PathProgramCache]: Analyzing trace with hash -1810625009, now seen corresponding path program 1 times [2021-07-04 18:05:20,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-04 18:05:20,808 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995031129] [2021-07-04 18:05:20,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-04 18:05:20,808 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-04 18:05:20,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-04 18:05:20,830 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:20,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-04 18:05:20,831 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:20,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-04 18:05:20,834 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:20,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-04 18:05:20,835 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2021-07-04 18:05:20,836 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-04 18:05:20,836 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995031129] [2021-07-04 18:05:20,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995031129] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-04 18:05:20,836 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-04 18:05:20,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-04 18:05:20,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044942468] [2021-07-04 18:05:20,837 INFO L425 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-04 18:05:20,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-04 18:05:20,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-04 18:05:20,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-04 18:05:20,838 INFO L87 Difference]: Start difference. First operand 258 states and 406 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-04 18:05:20,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-04 18:05:20,951 INFO L93 Difference]: Finished difference Result 527 states and 831 transitions. [2021-07-04 18:05:20,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-04 18:05:20,952 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 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 92 [2021-07-04 18:05:20,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-04 18:05:20,953 INFO L225 Difference]: With dead ends: 527 [2021-07-04 18:05:20,953 INFO L226 Difference]: Without dead ends: 276 [2021-07-04 18:05:20,954 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-04 18:05:20,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2021-07-04 18:05:20,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 273. [2021-07-04 18:05:20,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 272 states have (on average 1.5661764705882353) internal successors, (426), 272 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-04 18:05:20,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 426 transitions. [2021-07-04 18:05:20,962 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 426 transitions. Word has length 92 [2021-07-04 18:05:20,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-04 18:05:20,963 INFO L442 AbstractCegarLoop]: Abstraction has 273 states and 426 transitions. [2021-07-04 18:05:20,963 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-04 18:05:20,963 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 426 transitions. [2021-07-04 18:05:20,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-07-04 18:05:20,964 INFO L517 BasicCegarLoop]: Found error trace [2021-07-04 18:05:20,964 INFO L525 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 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] [2021-07-04 18:05:20,965 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-07-04 18:05:20,965 INFO L374 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-04 18:05:20,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-04 18:05:20,965 INFO L82 PathProgramCache]: Analyzing trace with hash 1590165732, now seen corresponding path program 1 times [2021-07-04 18:05:20,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-04 18:05:20,966 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127337573] [2021-07-04 18:05:20,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-04 18:05:20,966 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-04 18:05:20,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-04 18:05:20,986 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:20,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-04 18:05:20,987 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:20,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-04 18:05:20,990 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:20,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-04 18:05:20,991 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2021-07-04 18:05:20,991 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-04 18:05:20,992 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127337573] [2021-07-04 18:05:20,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127337573] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-04 18:05:20,992 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-04 18:05:20,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-04 18:05:20,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078894134] [2021-07-04 18:05:20,993 INFO L425 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-04 18:05:20,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-04 18:05:20,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-04 18:05:20,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-04 18:05:20,994 INFO L87 Difference]: Start difference. First operand 273 states and 426 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-04 18:05:21,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-04 18:05:21,097 INFO L93 Difference]: Finished difference Result 542 states and 845 transitions. [2021-07-04 18:05:21,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-04 18:05:21,098 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 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 93 [2021-07-04 18:05:21,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-04 18:05:21,099 INFO L225 Difference]: With dead ends: 542 [2021-07-04 18:05:21,099 INFO L226 Difference]: Without dead ends: 276 [2021-07-04 18:05:21,100 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-04 18:05:21,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2021-07-04 18:05:21,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 273. [2021-07-04 18:05:21,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 272 states have (on average 1.5441176470588236) internal successors, (420), 272 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-04 18:05:21,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 420 transitions. [2021-07-04 18:05:21,112 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 420 transitions. Word has length 93 [2021-07-04 18:05:21,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-04 18:05:21,112 INFO L442 AbstractCegarLoop]: Abstraction has 273 states and 420 transitions. [2021-07-04 18:05:21,113 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-04 18:05:21,113 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 420 transitions. [2021-07-04 18:05:21,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-07-04 18:05:21,114 INFO L517 BasicCegarLoop]: Found error trace [2021-07-04 18:05:21,114 INFO L525 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2021-07-04 18:05:21,114 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-07-04 18:05:21,114 INFO L374 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-04 18:05:21,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-04 18:05:21,115 INFO L82 PathProgramCache]: Analyzing trace with hash 1667896352, now seen corresponding path program 1 times [2021-07-04 18:05:21,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-04 18:05:21,115 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351105658] [2021-07-04 18:05:21,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-04 18:05:21,115 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-04 18:05:21,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-04 18:05:21,145 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:21,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-04 18:05:21,146 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:21,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-04 18:05:21,150 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:21,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-04 18:05:21,152 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-07-04 18:05:21,152 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-04 18:05:21,153 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351105658] [2021-07-04 18:05:21,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351105658] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-04 18:05:21,153 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-04 18:05:21,153 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-04 18:05:21,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171798937] [2021-07-04 18:05:21,154 INFO L425 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-04 18:05:21,154 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-04 18:05:21,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-04 18:05:21,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-04 18:05:21,155 INFO L87 Difference]: Start difference. First operand 273 states and 420 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-04 18:05:21,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-04 18:05:21,301 INFO L93 Difference]: Finished difference Result 591 states and 917 transitions. [2021-07-04 18:05:21,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-04 18:05:21,301 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 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 99 [2021-07-04 18:05:21,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-04 18:05:21,304 INFO L225 Difference]: With dead ends: 591 [2021-07-04 18:05:21,304 INFO L226 Difference]: Without dead ends: 325 [2021-07-04 18:05:21,306 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-04 18:05:21,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2021-07-04 18:05:21,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 323. [2021-07-04 18:05:21,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 322 states have (on average 1.565217391304348) internal successors, (504), 322 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-04 18:05:21,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 504 transitions. [2021-07-04 18:05:21,317 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 504 transitions. Word has length 99 [2021-07-04 18:05:21,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-04 18:05:21,319 INFO L442 AbstractCegarLoop]: Abstraction has 323 states and 504 transitions. [2021-07-04 18:05:21,319 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-04 18:05:21,320 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 504 transitions. [2021-07-04 18:05:21,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-07-04 18:05:21,321 INFO L517 BasicCegarLoop]: Found error trace [2021-07-04 18:05:21,321 INFO L525 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-04 18:05:21,321 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-07-04 18:05:21,321 INFO L374 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-04 18:05:21,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-04 18:05:21,322 INFO L82 PathProgramCache]: Analyzing trace with hash 1592272523, now seen corresponding path program 1 times [2021-07-04 18:05:21,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-04 18:05:21,322 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87365787] [2021-07-04 18:05:21,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-04 18:05:21,323 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-04 18:05:21,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-04 18:05:21,355 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:21,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-04 18:05:21,356 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:21,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-04 18:05:21,359 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:21,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-04 18:05:21,361 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-07-04 18:05:21,361 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-04 18:05:21,361 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87365787] [2021-07-04 18:05:21,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87365787] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-04 18:05:21,361 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-04 18:05:21,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-04 18:05:21,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956646552] [2021-07-04 18:05:21,362 INFO L425 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-04 18:05:21,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-04 18:05:21,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-04 18:05:21,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-04 18:05:21,363 INFO L87 Difference]: Start difference. First operand 323 states and 504 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-04 18:05:21,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-04 18:05:21,513 INFO L93 Difference]: Finished difference Result 642 states and 1001 transitions. [2021-07-04 18:05:21,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-04 18:05:21,513 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 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 100 [2021-07-04 18:05:21,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-04 18:05:21,515 INFO L225 Difference]: With dead ends: 642 [2021-07-04 18:05:21,515 INFO L226 Difference]: Without dead ends: 326 [2021-07-04 18:05:21,516 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-04 18:05:21,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2021-07-04 18:05:21,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 324. [2021-07-04 18:05:21,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 323 states have (on average 1.5603715170278638) internal successors, (504), 323 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-04 18:05:21,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 504 transitions. [2021-07-04 18:05:21,528 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 504 transitions. Word has length 100 [2021-07-04 18:05:21,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-04 18:05:21,529 INFO L442 AbstractCegarLoop]: Abstraction has 324 states and 504 transitions. [2021-07-04 18:05:21,529 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-04 18:05:21,529 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 504 transitions. [2021-07-04 18:05:21,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-07-04 18:05:21,530 INFO L517 BasicCegarLoop]: Found error trace [2021-07-04 18:05:21,530 INFO L525 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1] [2021-07-04 18:05:21,531 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-07-04 18:05:21,531 INFO L374 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-04 18:05:21,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-04 18:05:21,531 INFO L82 PathProgramCache]: Analyzing trace with hash 1901861672, now seen corresponding path program 1 times [2021-07-04 18:05:21,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-04 18:05:21,532 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697677270] [2021-07-04 18:05:21,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-04 18:05:21,532 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-04 18:05:21,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-04 18:05:21,591 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:21,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-04 18:05:21,592 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:21,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-04 18:05:21,595 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:21,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-04 18:05:21,597 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-07-04 18:05:21,597 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-04 18:05:21,597 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697677270] [2021-07-04 18:05:21,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697677270] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-04 18:05:21,597 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-04 18:05:21,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-04 18:05:21,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828381786] [2021-07-04 18:05:21,598 INFO L425 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-04 18:05:21,598 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-04 18:05:21,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-04 18:05:21,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-04 18:05:21,599 INFO L87 Difference]: Start difference. First operand 324 states and 504 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-04 18:05:21,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-04 18:05:21,641 INFO L93 Difference]: Finished difference Result 955 states and 1488 transitions. [2021-07-04 18:05:21,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-04 18:05:21,641 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 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 105 [2021-07-04 18:05:21,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-04 18:05:21,644 INFO L225 Difference]: With dead ends: 955 [2021-07-04 18:05:21,644 INFO L226 Difference]: Without dead ends: 638 [2021-07-04 18:05:21,646 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-04 18:05:21,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2021-07-04 18:05:21,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 638. [2021-07-04 18:05:21,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 638 states, 637 states have (on average 1.5525902668759812) internal successors, (989), 637 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-04 18:05:21,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 989 transitions. [2021-07-04 18:05:21,663 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 989 transitions. Word has length 105 [2021-07-04 18:05:21,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-04 18:05:21,664 INFO L442 AbstractCegarLoop]: Abstraction has 638 states and 989 transitions. [2021-07-04 18:05:21,664 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-04 18:05:21,664 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 989 transitions. [2021-07-04 18:05:21,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-07-04 18:05:21,665 INFO L517 BasicCegarLoop]: Found error trace [2021-07-04 18:05:21,666 INFO L525 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1] [2021-07-04 18:05:21,666 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-07-04 18:05:21,666 INFO L374 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-04 18:05:21,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-04 18:05:21,667 INFO L82 PathProgramCache]: Analyzing trace with hash 837467901, now seen corresponding path program 1 times [2021-07-04 18:05:21,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-04 18:05:21,668 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940477159] [2021-07-04 18:05:21,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-04 18:05:21,668 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-04 18:05:21,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-04 18:05:21,691 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:21,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-04 18:05:21,692 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:21,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-04 18:05:21,695 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:21,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-04 18:05:21,696 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-07-04 18:05:21,696 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-04 18:05:21,696 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940477159] [2021-07-04 18:05:21,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940477159] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-04 18:05:21,696 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-04 18:05:21,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-04 18:05:21,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476196125] [2021-07-04 18:05:21,697 INFO L425 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-04 18:05:21,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-04 18:05:21,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-04 18:05:21,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-04 18:05:21,698 INFO L87 Difference]: Start difference. First operand 638 states and 989 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-04 18:05:21,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-04 18:05:21,737 INFO L93 Difference]: Finished difference Result 1560 states and 2422 transitions. [2021-07-04 18:05:21,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-04 18:05:21,738 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-07-04 18:05:21,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-04 18:05:21,742 INFO L225 Difference]: With dead ends: 1560 [2021-07-04 18:05:21,742 INFO L226 Difference]: Without dead ends: 929 [2021-07-04 18:05:21,744 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-04 18:05:21,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 929 states. [2021-07-04 18:05:21,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 929 to 929. [2021-07-04 18:05:21,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 929 states, 928 states have (on average 1.550646551724138) internal successors, (1439), 928 states have internal predecessors, (1439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-04 18:05:21,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 1439 transitions. [2021-07-04 18:05:21,773 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 1439 transitions. Word has length 106 [2021-07-04 18:05:21,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-04 18:05:21,774 INFO L442 AbstractCegarLoop]: Abstraction has 929 states and 1439 transitions. [2021-07-04 18:05:21,774 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-04 18:05:21,774 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 1439 transitions. [2021-07-04 18:05:21,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-07-04 18:05:21,776 INFO L517 BasicCegarLoop]: Found error trace [2021-07-04 18:05:21,776 INFO L525 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1] [2021-07-04 18:05:21,776 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-07-04 18:05:21,776 INFO L374 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-04 18:05:21,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-04 18:05:21,777 INFO L82 PathProgramCache]: Analyzing trace with hash 1077707647, now seen corresponding path program 1 times [2021-07-04 18:05:21,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-04 18:05:21,777 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003441502] [2021-07-04 18:05:21,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-04 18:05:21,777 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-04 18:05:21,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-04 18:05:21,802 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:21,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-04 18:05:21,805 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:21,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-04 18:05:21,808 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:21,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-04 18:05:21,809 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2021-07-04 18:05:21,810 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-04 18:05:21,810 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003441502] [2021-07-04 18:05:21,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003441502] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-04 18:05:21,812 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-04 18:05:21,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-04 18:05:21,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869400690] [2021-07-04 18:05:21,812 INFO L425 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-04 18:05:21,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-04 18:05:21,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-04 18:05:21,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-04 18:05:21,813 INFO L87 Difference]: Start difference. First operand 929 states and 1439 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-04 18:05:21,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-04 18:05:21,864 INFO L93 Difference]: Finished difference Result 2147 states and 3328 transitions. [2021-07-04 18:05:21,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-04 18:05:21,865 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-07-04 18:05:21,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-04 18:05:21,869 INFO L225 Difference]: With dead ends: 2147 [2021-07-04 18:05:21,870 INFO L226 Difference]: Without dead ends: 1225 [2021-07-04 18:05:21,871 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-04 18:05:21,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1225 states. [2021-07-04 18:05:21,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1225 to 1225. [2021-07-04 18:05:21,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1225 states, 1224 states have (on average 1.5473856209150327) internal successors, (1894), 1224 states have internal predecessors, (1894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-04 18:05:21,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1225 states to 1225 states and 1894 transitions. [2021-07-04 18:05:21,906 INFO L78 Accepts]: Start accepts. Automaton has 1225 states and 1894 transitions. Word has length 106 [2021-07-04 18:05:21,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-04 18:05:21,906 INFO L442 AbstractCegarLoop]: Abstraction has 1225 states and 1894 transitions. [2021-07-04 18:05:21,906 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-04 18:05:21,907 INFO L276 IsEmpty]: Start isEmpty. Operand 1225 states and 1894 transitions. [2021-07-04 18:05:21,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-07-04 18:05:21,908 INFO L517 BasicCegarLoop]: Found error trace [2021-07-04 18:05:21,908 INFO L525 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1] [2021-07-04 18:05:21,909 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-07-04 18:05:21,909 INFO L374 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-04 18:05:21,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-04 18:05:21,909 INFO L82 PathProgramCache]: Analyzing trace with hash -2015927886, now seen corresponding path program 1 times [2021-07-04 18:05:21,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-04 18:05:21,910 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467350730] [2021-07-04 18:05:21,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-04 18:05:21,910 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-04 18:05:21,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-04 18:05:21,980 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-04 18:05:22,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-04 18:05:22,014 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-04 18:05:22,070 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-04 18:05:22,070 INFO L639 BasicCegarLoop]: Counterexample is feasible [2021-07-04 18:05:22,073 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-07-04 18:05:22,073 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-04 18:05:22,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.07 06:05:22 BoogieIcfgContainer [2021-07-04 18:05:22,188 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-04 18:05:22,188 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-07-04 18:05:22,189 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-07-04 18:05:22,189 INFO L275 PluginConnector]: Witness Printer initialized [2021-07-04 18:05:22,189 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.07 06:05:18" (3/4) ... [2021-07-04 18:05:22,191 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-07-04 18:05:22,283 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-07-04 18:05:22,284 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-07-04 18:05:22,285 INFO L168 Benchmark]: Toolchain (without parser) took 5136.83 ms. Allocated memory was 71.3 MB in the beginning and 142.6 MB in the end (delta: 71.3 MB). Free memory was 52.4 MB in the beginning and 45.6 MB in the end (delta: 6.7 MB). Peak memory consumption was 78.7 MB. Max. memory is 16.1 GB. [2021-07-04 18:05:22,287 INFO L168 Benchmark]: CDTParser took 0.77 ms. Allocated memory is still 71.3 MB. Free memory was 51.7 MB in the beginning and 51.6 MB in the end (delta: 54.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-07-04 18:05:22,287 INFO L168 Benchmark]: CACSL2BoogieTranslator took 326.15 ms. Allocated memory is still 71.3 MB. Free memory was 52.1 MB in the beginning and 49.0 MB in the end (delta: 3.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-07-04 18:05:22,288 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.96 ms. Allocated memory is still 71.3 MB. Free memory was 49.0 MB in the beginning and 46.1 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-04 18:05:22,288 INFO L168 Benchmark]: Boogie Preprocessor took 30.84 ms. Allocated memory is still 71.3 MB. Free memory was 46.1 MB in the beginning and 44.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-04 18:05:22,292 INFO L168 Benchmark]: RCFGBuilder took 782.64 ms. Allocated memory was 71.3 MB in the beginning and 96.5 MB in the end (delta: 25.2 MB). Free memory was 44.0 MB in the beginning and 64.4 MB in the end (delta: -20.3 MB). Peak memory consumption was 22.7 MB. Max. memory is 16.1 GB. [2021-07-04 18:05:22,292 INFO L168 Benchmark]: TraceAbstraction took 3849.29 ms. Allocated memory was 96.5 MB in the beginning and 142.6 MB in the end (delta: 46.1 MB). Free memory was 64.4 MB in the beginning and 60.3 MB in the end (delta: 4.0 MB). Peak memory consumption was 51.2 MB. Max. memory is 16.1 GB. [2021-07-04 18:05:22,294 INFO L168 Benchmark]: Witness Printer took 95.40 ms. Allocated memory is still 142.6 MB. Free memory was 60.3 MB in the beginning and 45.6 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-07-04 18:05:22,297 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.77 ms. Allocated memory is still 71.3 MB. Free memory was 51.7 MB in the beginning and 51.6 MB in the end (delta: 54.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 326.15 ms. Allocated memory is still 71.3 MB. Free memory was 52.1 MB in the beginning and 49.0 MB in the end (delta: 3.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 45.96 ms. Allocated memory is still 71.3 MB. Free memory was 49.0 MB in the beginning and 46.1 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.84 ms. Allocated memory is still 71.3 MB. Free memory was 46.1 MB in the beginning and 44.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 782.64 ms. Allocated memory was 71.3 MB in the beginning and 96.5 MB in the end (delta: 25.2 MB). Free memory was 44.0 MB in the beginning and 64.4 MB in the end (delta: -20.3 MB). Peak memory consumption was 22.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3849.29 ms. Allocated memory was 96.5 MB in the beginning and 142.6 MB in the end (delta: 46.1 MB). Free memory was 64.4 MB in the beginning and 60.3 MB in the end (delta: 4.0 MB). Peak memory consumption was 51.2 MB. Max. memory is 16.1 GB. * Witness Printer took 95.40 ms. Allocated memory is still 142.6 MB. Free memory was 60.3 MB in the beginning and 45.6 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 575]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L580] int s ; [L584] s = 12292 [L14] int s__info_callback = __VERIFIER_nondet_int() ; [L15] int s__in_handshake = __VERIFIER_nondet_int() ; [L16] int s__state ; [L17] int s__new_session ; [L18] int s__server ; [L19] int s__version = __VERIFIER_nondet_int() ; [L20] int s__type ; [L21] int s__init_num ; [L22] int s__bbio = __VERIFIER_nondet_int() ; [L23] int s__wbio = __VERIFIER_nondet_int() ; [L24] int s__hit = __VERIFIER_nondet_int() ; [L25] int s__rwstate ; [L26] int s__init_buf___0 = __VERIFIER_nondet_int() ; [L27] int s__debug = __VERIFIER_nondet_int() ; [L28] int s__shutdown ; [L29] int s__ctx__info_callback = __VERIFIER_nondet_int() ; [L30] int s__ctx__stats__sess_connect_renegotiate = __VERIFIER_nondet_int() ; [L31] int s__ctx__stats__sess_connect = __VERIFIER_nondet_int() ; [L32] int s__ctx__stats__sess_hit = __VERIFIER_nondet_int() ; [L33] int s__ctx__stats__sess_connect_good = __VERIFIER_nondet_int() ; [L34] int s__s3__change_cipher_spec ; [L35] int s__s3__flags = __VERIFIER_nondet_int() ; [L36] int s__s3__delay_buf_pop_ret ; [L37] int s__s3__tmp__cert_req = __VERIFIER_nondet_int() ; [L38] int s__s3__tmp__new_compression = __VERIFIER_nondet_int() ; [L39] int s__s3__tmp__reuse_message = __VERIFIER_nondet_int() ; [L40] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int() ; [L41] int s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() ; [L42] int s__s3__tmp__next_state___0 ; [L43] int s__s3__tmp__new_compression__id = __VERIFIER_nondet_int() ; [L44] int s__session__cipher ; [L45] int s__session__compress_meth ; [L46] int buf ; [L47] unsigned long tmp ; [L48] unsigned long l ; [L49] int num1 = __VERIFIER_nondet_int() ; [L50] int cb ; [L51] int ret ; [L52] int new_state ; [L53] int state ; [L54] int skip ; [L55] int tmp___0 ; [L56] int tmp___1 = __VERIFIER_nondet_int() ; [L57] int tmp___2 = __VERIFIER_nondet_int() ; [L58] int tmp___3 = __VERIFIER_nondet_int() ; [L59] int tmp___4 = __VERIFIER_nondet_int() ; [L60] int tmp___5 = __VERIFIER_nondet_int() ; [L61] int tmp___6 = __VERIFIER_nondet_int() ; [L62] int tmp___7 = __VERIFIER_nondet_int() ; [L63] int tmp___8 = __VERIFIER_nondet_int() ; [L64] int tmp___9 = __VERIFIER_nondet_int() ; [L65] int blastFlag ; [L66] int __cil_tmp55 ; [L67] void *__cil_tmp56 ; [L68] unsigned long __cil_tmp57 ; [L69] unsigned long __cil_tmp58 = __VERIFIER_nondet_ulong() ; [L70] void *__cil_tmp59 ; [L71] unsigned long __cil_tmp60 ; [L72] unsigned long __cil_tmp61 ; [L73] unsigned long __cil_tmp62 ; [L74] unsigned long __cil_tmp63 ; [L75] unsigned long __cil_tmp64 ; [L76] long __cil_tmp65 = __VERIFIER_nondet_long() ; [L77] long __cil_tmp66 ; [L78] long __cil_tmp67 ; [L79] long __cil_tmp68 ; [L80] long __cil_tmp69 ; [L81] long __cil_tmp70 = __VERIFIER_nondet_long() ; [L82] long __cil_tmp71 ; [L83] long __cil_tmp72 ; [L84] long __cil_tmp73 ; [L85] long __cil_tmp74 ; [L89] s__state = initial_state [L90] blastFlag = 0 [L91] tmp = __VERIFIER_nondet_int() [L92] cb = 0 [L93] ret = -1 [L94] skip = 0 [L95] tmp___0 = 0 [L96] COND TRUE s__info_callback != 0 [L97] cb = s__info_callback [L103] s__in_handshake ++ [L104] COND FALSE !(tmp___1 + 12288) [L110] COND TRUE 1 [L112] state = s__state [L113] COND TRUE s__state == 12292 [L215] s__new_session = 1 [L216] s__state = 4096 [L217] s__ctx__stats__sess_connect_renegotiate ++ [L222] s__server = 0 [L223] COND TRUE cb != 0 [L227] __cil_tmp55 = s__version + 65280 [L228] COND FALSE !(__cil_tmp55 != 768) [L233] s__type = 4096 [L235] __cil_tmp56 = (void *)0 [L236] __cil_tmp57 = (unsigned long )__cil_tmp56 [L237] __cil_tmp58 = (unsigned long )s__init_buf___0 [L238] COND FALSE !(__cil_tmp58 == __cil_tmp57) [L256] COND FALSE !(! tmp___4) [L260] COND FALSE !(! tmp___5) [L264] s__state = 4368 [L265] s__ctx__stats__sess_connect ++ [L266] s__init_num = 0 [L547] COND FALSE !(! s__s3__tmp__reuse_message) [L564] skip = 0 [L110] COND TRUE 1 [L112] state = s__state [L113] COND FALSE !(s__state == 12292) [L116] COND FALSE !(s__state == 16384) [L119] COND FALSE !(s__state == 4096) [L122] COND FALSE !(s__state == 20480) [L125] COND FALSE !(s__state == 4099) [L128] COND TRUE s__state == 4368 [L270] s__shutdown = 0 [L271] ret = __VERIFIER_nondet_int() [L272] COND TRUE blastFlag == 0 [L273] blastFlag = 1 [L275] COND FALSE !(ret <= 0) [L278] s__state = 4384 [L279] s__init_num = 0 [L281] __cil_tmp62 = (unsigned long )s__wbio [L282] __cil_tmp63 = (unsigned long )s__bbio [L283] COND TRUE __cil_tmp63 != __cil_tmp62 [L547] COND FALSE !(! s__s3__tmp__reuse_message) [L564] skip = 0 [L110] COND TRUE 1 [L112] state = s__state [L113] COND FALSE !(s__state == 12292) [L116] COND FALSE !(s__state == 16384) [L119] COND FALSE !(s__state == 4096) [L122] COND FALSE !(s__state == 20480) [L125] COND FALSE !(s__state == 4099) [L128] COND FALSE !(s__state == 4368) [L131] COND FALSE !(s__state == 4369) [L134] COND TRUE s__state == 4384 [L290] ret = __VERIFIER_nondet_int() [L291] COND TRUE blastFlag == 1 [L292] blastFlag = 2 [L298] COND FALSE !(ret <= 0) [L301] COND FALSE !(\read(s__hit)) [L304] s__state = 4400 [L306] s__init_num = 0 [L547] COND FALSE !(! s__s3__tmp__reuse_message) [L564] skip = 0 [L110] COND TRUE 1 [L112] state = s__state [L113] COND FALSE !(s__state == 12292) [L116] COND FALSE !(s__state == 16384) [L119] COND FALSE !(s__state == 4096) [L122] COND FALSE !(s__state == 20480) [L125] COND FALSE !(s__state == 4099) [L128] COND FALSE !(s__state == 4368) [L131] COND FALSE !(s__state == 4369) [L134] COND FALSE !(s__state == 4384) [L137] COND FALSE !(s__state == 4385) [L140] COND TRUE s__state == 4400 [L311] __cil_tmp64 = (unsigned long )s__s3__tmp__new_cipher__algorithms [L312] COND FALSE !(__cil_tmp64 + 256UL) [L315] ret = __VERIFIER_nondet_int() [L316] COND TRUE blastFlag == 2 [L317] blastFlag = 3 [L319] COND FALSE !(ret <= 0) [L324] s__state = 4416 [L325] s__init_num = 0 [L547] COND FALSE !(! s__s3__tmp__reuse_message) [L564] skip = 0 [L110] COND TRUE 1 [L112] state = s__state [L113] COND FALSE !(s__state == 12292) [L116] COND FALSE !(s__state == 16384) [L119] COND FALSE !(s__state == 4096) [L122] COND FALSE !(s__state == 20480) [L125] COND FALSE !(s__state == 4099) [L128] COND FALSE !(s__state == 4368) [L131] COND FALSE !(s__state == 4369) [L134] COND FALSE !(s__state == 4384) [L137] COND FALSE !(s__state == 4385) [L140] COND FALSE !(s__state == 4400) [L143] COND FALSE !(s__state == 4401) [L146] COND TRUE s__state == 4416 [L329] ret = __VERIFIER_nondet_int() [L330] COND TRUE blastFlag == 3 [L331] blastFlag = 4 [L333] COND FALSE !(ret <= 0) [L336] s__state = 4432 [L337] s__init_num = 0 [L338] COND FALSE !(! tmp___6) [L547] COND FALSE !(! s__s3__tmp__reuse_message) [L564] skip = 0 [L110] COND TRUE 1 [L112] state = s__state [L113] COND FALSE !(s__state == 12292) [L116] COND FALSE !(s__state == 16384) [L119] COND FALSE !(s__state == 4096) [L122] COND FALSE !(s__state == 20480) [L125] COND FALSE !(s__state == 4099) [L128] COND FALSE !(s__state == 4368) [L131] COND FALSE !(s__state == 4369) [L134] COND FALSE !(s__state == 4384) [L137] COND FALSE !(s__state == 4385) [L140] COND FALSE !(s__state == 4400) [L143] COND FALSE !(s__state == 4401) [L146] COND FALSE !(s__state == 4416) [L149] COND FALSE !(s__state == 4417) [L152] COND TRUE s__state == 4432 [L345] ret = __VERIFIER_nondet_int() [L346] COND TRUE blastFlag == 4 [L575] reach_error() - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION CFG has 1 procedures, 128 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3652.7ms, OverallIterations: 17, TraceHistogramMax: 6, EmptinessCheckTime: 31.5ms, AutomataDifference: 2081.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 17.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 2205 SDtfs, 2042 SDslu, 687 SDs, 0 SdLazy, 1141 SolverSat, 474 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1197.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=1225occurred in iteration=16, InterpolantAutomatonStates: 48, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 264.5ms AutomataMinimizationTime, 16 MinimizatonAttempts, 46 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 60.3ms SsaConstructionTime, 308.8ms SatisfiabilityAnalysisTime, 554.3ms InterpolantComputationTime, 1289 NumberOfCodeBlocks, 1289 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 1166 ConstructedInterpolants, 0 QuantifiedInterpolants, 2103 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 PerfectInterpolantSequences, 1040/1040 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-07-04 18:05:22,345 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...