./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/openssl-simplified/s3_clnt_4.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_4.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 f8927ec5890c81ea18bc2a9cefa5e837a618c47d ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 18:05:24,633 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-04 18:05:24,636 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-04 18:05:24,684 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-04 18:05:24,684 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-04 18:05:24,688 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-04 18:05:24,689 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-04 18:05:24,694 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-04 18:05:24,697 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-04 18:05:24,701 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-04 18:05:24,703 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-04 18:05:24,704 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-04 18:05:24,704 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-04 18:05:24,707 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-04 18:05:24,708 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-04 18:05:24,709 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-04 18:05:24,711 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-04 18:05:24,712 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-04 18:05:24,714 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-04 18:05:24,719 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-04 18:05:24,721 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-04 18:05:24,722 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-04 18:05:24,724 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-04 18:05:24,725 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-04 18:05:24,731 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-04 18:05:24,731 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-04 18:05:24,732 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-04 18:05:24,733 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-04 18:05:24,734 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-04 18:05:24,735 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-04 18:05:24,735 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-04 18:05:24,736 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-04 18:05:24,737 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-04 18:05:24,738 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-04 18:05:24,739 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-04 18:05:24,739 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-04 18:05:24,740 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-04 18:05:24,740 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-04 18:05:24,740 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-04 18:05:24,742 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-04 18:05:24,743 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-04 18:05:24,744 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-07-04 18:05:24,780 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-04 18:05:24,781 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-04 18:05:24,783 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-04 18:05:24,783 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-04 18:05:24,783 INFO L138 SettingsManager]: * Use SBE=true [2021-07-04 18:05:24,783 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-04 18:05:24,784 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-04 18:05:24,784 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-04 18:05:24,784 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-04 18:05:24,784 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-04 18:05:24,785 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-04 18:05:24,785 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-04 18:05:24,785 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-04 18:05:24,786 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-04 18:05:24,786 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-04 18:05:24,786 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-04 18:05:24,786 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-04 18:05:24,786 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-04 18:05:24,787 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-04 18:05:24,787 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-04 18:05:24,787 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-04 18:05:24,787 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-04 18:05:24,787 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-04 18:05:24,788 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-04 18:05:24,788 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-04 18:05:24,788 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-04 18:05:24,788 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-04 18:05:24,788 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-07-04 18:05:24,788 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f8927ec5890c81ea18bc2a9cefa5e837a618c47d [2021-07-04 18:05:25,140 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-04 18:05:25,163 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-04 18:05:25,166 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-04 18:05:25,167 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-04 18:05:25,168 INFO L275 PluginConnector]: CDTParser initialized [2021-07-04 18:05:25,169 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/openssl-simplified/s3_clnt_4.cil-2.c [2021-07-04 18:05:25,238 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/607a358b4/71ad72bb8e1742828a9679abbc7b9933/FLAG7f1185c01 [2021-07-04 18:05:25,742 INFO L306 CDTParser]: Found 1 translation units. [2021-07-04 18:05:25,742 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/openssl-simplified/s3_clnt_4.cil-2.c [2021-07-04 18:05:25,756 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/607a358b4/71ad72bb8e1742828a9679abbc7b9933/FLAG7f1185c01 [2021-07-04 18:05:26,049 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/607a358b4/71ad72bb8e1742828a9679abbc7b9933 [2021-07-04 18:05:26,052 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-04 18:05:26,054 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-07-04 18:05:26,057 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-04 18:05:26,058 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-04 18:05:26,061 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-04 18:05:26,062 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.07 06:05:26" (1/1) ... [2021-07-04 18:05:26,062 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42394af8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 06:05:26, skipping insertion in model container [2021-07-04 18:05:26,063 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.07 06:05:26" (1/1) ... [2021-07-04 18:05:26,070 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-04 18:05:26,115 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-04 18:05:26,295 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_4.cil-2.c[35431,35444] [2021-07-04 18:05:26,307 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-04 18:05:26,315 INFO L203 MainTranslator]: Completed pre-run [2021-07-04 18:05:26,376 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_4.cil-2.c[35431,35444] [2021-07-04 18:05:26,379 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-04 18:05:26,390 INFO L208 MainTranslator]: Completed translation [2021-07-04 18:05:26,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 06:05:26 WrapperNode [2021-07-04 18:05:26,391 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-04 18:05:26,392 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-04 18:05:26,392 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-04 18:05:26,392 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-04 18:05:26,398 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 06:05:26" (1/1) ... [2021-07-04 18:05:26,407 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 06:05:26" (1/1) ... [2021-07-04 18:05:26,433 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-04 18:05:26,434 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-04 18:05:26,434 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-04 18:05:26,435 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-04 18:05:26,442 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 06:05:26" (1/1) ... [2021-07-04 18:05:26,442 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 06:05:26" (1/1) ... [2021-07-04 18:05:26,446 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 06:05:26" (1/1) ... [2021-07-04 18:05:26,446 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 06:05:26" (1/1) ... [2021-07-04 18:05:26,453 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 06:05:26" (1/1) ... [2021-07-04 18:05:26,459 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 06:05:26" (1/1) ... [2021-07-04 18:05:26,462 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 06:05:26" (1/1) ... [2021-07-04 18:05:26,466 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-04 18:05:26,467 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-04 18:05:26,467 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-04 18:05:26,467 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-04 18:05:26,468 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 06:05:26" (1/1) ... [2021-07-04 18:05:26,474 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-04 18:05:26,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-04 18:05:26,494 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 18:05:26,513 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 18:05:26,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-07-04 18:05:26,557 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-07-04 18:05:26,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-04 18:05:26,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-04 18:05:26,687 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-07-04 18:05:27,166 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2021-07-04 18:05:27,167 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2021-07-04 18:05:27,174 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-04 18:05:27,177 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-07-04 18:05:27,179 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.07 06:05:27 BoogieIcfgContainer [2021-07-04 18:05:27,180 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-04 18:05:27,181 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-04 18:05:27,182 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-04 18:05:27,184 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-04 18:05:27,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.07 06:05:26" (1/3) ... [2021-07-04 18:05:27,185 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a1eda5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.07 06:05:27, skipping insertion in model container [2021-07-04 18:05:27,186 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.07 06:05:26" (2/3) ... [2021-07-04 18:05:27,187 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a1eda5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.07 06:05:27, skipping insertion in model container [2021-07-04 18:05:27,187 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.07 06:05:27" (3/3) ... [2021-07-04 18:05:27,188 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_clnt_4.cil-2.c [2021-07-04 18:05:27,195 INFO L198 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-04 18:05:27,196 INFO L158 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-04 18:05:27,248 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION ======== [2021-07-04 18:05:27,256 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 18:05:27,256 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-04 18:05:27,278 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 18:05:27,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-07-04 18:05:27,284 INFO L517 BasicCegarLoop]: Found error trace [2021-07-04 18:05:27,284 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 18:05:27,285 INFO L374 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-04 18:05:27,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-04 18:05:27,293 INFO L82 PathProgramCache]: Analyzing trace with hash -1457695038, now seen corresponding path program 1 times [2021-07-04 18:05:27,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-04 18:05:27,301 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750756957] [2021-07-04 18:05:27,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-04 18:05:27,302 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-04 18:05:27,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-04 18:05:27,518 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:27,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-04 18:05:27,520 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:27,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-04 18:05:27,530 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:27,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-04 18:05:27,532 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 18:05:27,532 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-04 18:05:27,533 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750756957] [2021-07-04 18:05:27,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750756957] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-04 18:05:27,534 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-04 18:05:27,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-04 18:05:27,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104278597] [2021-07-04 18:05:27,548 INFO L425 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-04 18:05:27,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-04 18:05:27,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-04 18:05:27,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-04 18:05:27,564 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 18:05:27,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-04 18:05:27,794 INFO L93 Difference]: Finished difference Result 284 states and 480 transitions. [2021-07-04 18:05:27,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-04 18:05:27,797 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 18:05:27,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-04 18:05:27,807 INFO L225 Difference]: With dead ends: 284 [2021-07-04 18:05:27,807 INFO L226 Difference]: Without dead ends: 140 [2021-07-04 18:05:27,809 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-04 18:05:27,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-07-04 18:05:27,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 135. [2021-07-04 18:05:27,841 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 18:05:27,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 210 transitions. [2021-07-04 18:05:27,843 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 210 transitions. Word has length 24 [2021-07-04 18:05:27,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-04 18:05:27,844 INFO L442 AbstractCegarLoop]: Abstraction has 135 states and 210 transitions. [2021-07-04 18:05:27,844 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 18:05:27,844 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 210 transitions. [2021-07-04 18:05:27,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-07-04 18:05:27,845 INFO L517 BasicCegarLoop]: Found error trace [2021-07-04 18:05:27,845 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 18:05:27,845 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-04 18:05:27,846 INFO L374 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-04 18:05:27,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-04 18:05:27,846 INFO L82 PathProgramCache]: Analyzing trace with hash 2051408279, now seen corresponding path program 1 times [2021-07-04 18:05:27,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-04 18:05:27,847 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257593717] [2021-07-04 18:05:27,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-04 18:05:27,847 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-04 18:05:27,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-04 18:05:27,898 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:27,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-04 18:05:27,900 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:27,900 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-04 18:05:27,904 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:27,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-04 18:05:27,905 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 18:05:27,906 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-04 18:05:27,906 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257593717] [2021-07-04 18:05:27,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257593717] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-04 18:05:27,906 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-04 18:05:27,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-04 18:05:27,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877723606] [2021-07-04 18:05:27,908 INFO L425 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-04 18:05:27,908 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-04 18:05:27,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-04 18:05:27,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-04 18:05:27,911 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 18:05:28,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-04 18:05:28,062 INFO L93 Difference]: Finished difference Result 292 states and 458 transitions. [2021-07-04 18:05:28,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-04 18:05:28,062 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 18:05:28,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-04 18:05:28,064 INFO L225 Difference]: With dead ends: 292 [2021-07-04 18:05:28,064 INFO L226 Difference]: Without dead ends: 164 [2021-07-04 18:05:28,065 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 18:05:28,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2021-07-04 18:05:28,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 159. [2021-07-04 18:05:28,076 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 18:05:28,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 253 transitions. [2021-07-04 18:05:28,076 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 253 transitions. Word has length 25 [2021-07-04 18:05:28,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-04 18:05:28,077 INFO L442 AbstractCegarLoop]: Abstraction has 159 states and 253 transitions. [2021-07-04 18:05:28,077 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 18:05:28,077 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 253 transitions. [2021-07-04 18:05:28,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-07-04 18:05:28,078 INFO L517 BasicCegarLoop]: Found error trace [2021-07-04 18:05:28,079 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 18:05:28,079 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-04 18:05:28,079 INFO L374 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-04 18:05:28,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-04 18:05:28,080 INFO L82 PathProgramCache]: Analyzing trace with hash 1217481658, now seen corresponding path program 1 times [2021-07-04 18:05:28,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-04 18:05:28,080 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462857994] [2021-07-04 18:05:28,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-04 18:05:28,080 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-04 18:05:28,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-04 18:05:28,121 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:28,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-04 18:05:28,122 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:28,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-04 18:05:28,125 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:28,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-04 18:05:28,126 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 18:05:28,126 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-04 18:05:28,126 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462857994] [2021-07-04 18:05:28,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462857994] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-04 18:05:28,127 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-04 18:05:28,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-04 18:05:28,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360728772] [2021-07-04 18:05:28,127 INFO L425 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-04 18:05:28,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-04 18:05:28,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-04 18:05:28,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-04 18:05:28,132 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 18:05:28,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-04 18:05:28,244 INFO L93 Difference]: Finished difference Result 335 states and 537 transitions. [2021-07-04 18:05:28,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-04 18:05:28,245 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 18:05:28,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-04 18:05:28,248 INFO L225 Difference]: With dead ends: 335 [2021-07-04 18:05:28,248 INFO L226 Difference]: Without dead ends: 183 [2021-07-04 18:05:28,251 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 18:05:28,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-07-04 18:05:28,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 180. [2021-07-04 18:05:28,275 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 18:05:28,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 289 transitions. [2021-07-04 18:05:28,276 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 289 transitions. Word has length 44 [2021-07-04 18:05:28,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-04 18:05:28,276 INFO L442 AbstractCegarLoop]: Abstraction has 180 states and 289 transitions. [2021-07-04 18:05:28,277 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 18:05:28,277 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 289 transitions. [2021-07-04 18:05:28,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-07-04 18:05:28,278 INFO L517 BasicCegarLoop]: Found error trace [2021-07-04 18:05:28,278 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 18:05:28,278 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-07-04 18:05:28,279 INFO L374 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-04 18:05:28,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-04 18:05:28,279 INFO L82 PathProgramCache]: Analyzing trace with hash -2096370001, now seen corresponding path program 1 times [2021-07-04 18:05:28,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-04 18:05:28,279 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337845092] [2021-07-04 18:05:28,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-04 18:05:28,280 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-04 18:05:28,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-04 18:05:28,338 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:28,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-04 18:05:28,339 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:28,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-04 18:05:28,343 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:28,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-04 18:05:28,344 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 18:05:28,344 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-04 18:05:28,344 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337845092] [2021-07-04 18:05:28,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337845092] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-04 18:05:28,345 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-04 18:05:28,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-04 18:05:28,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899677749] [2021-07-04 18:05:28,346 INFO L425 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-04 18:05:28,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-04 18:05:28,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-04 18:05:28,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-04 18:05:28,347 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 18:05:28,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-04 18:05:28,505 INFO L93 Difference]: Finished difference Result 356 states and 571 transitions. [2021-07-04 18:05:28,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-04 18:05:28,506 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 18:05:28,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-04 18:05:28,507 INFO L225 Difference]: With dead ends: 356 [2021-07-04 18:05:28,508 INFO L226 Difference]: Without dead ends: 183 [2021-07-04 18:05:28,509 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 18:05:28,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-07-04 18:05:28,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 180. [2021-07-04 18:05:28,520 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 18:05:28,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 287 transitions. [2021-07-04 18:05:28,521 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 287 transitions. Word has length 45 [2021-07-04 18:05:28,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-04 18:05:28,521 INFO L442 AbstractCegarLoop]: Abstraction has 180 states and 287 transitions. [2021-07-04 18:05:28,522 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 18:05:28,522 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 287 transitions. [2021-07-04 18:05:28,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-07-04 18:05:28,524 INFO L517 BasicCegarLoop]: Found error trace [2021-07-04 18:05:28,524 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 18:05:28,524 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-07-04 18:05:28,525 INFO L374 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-04 18:05:28,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-04 18:05:28,525 INFO L82 PathProgramCache]: Analyzing trace with hash 1812570458, now seen corresponding path program 1 times [2021-07-04 18:05:28,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-04 18:05:28,526 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173096062] [2021-07-04 18:05:28,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-04 18:05:28,526 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-04 18:05:28,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-04 18:05:28,589 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:28,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-04 18:05:28,590 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:28,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-04 18:05:28,594 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:28,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-04 18:05:28,595 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 18:05:28,595 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-04 18:05:28,595 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173096062] [2021-07-04 18:05:28,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173096062] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-04 18:05:28,596 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-04 18:05:28,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-04 18:05:28,596 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260646837] [2021-07-04 18:05:28,597 INFO L425 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-04 18:05:28,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-04 18:05:28,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-04 18:05:28,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-04 18:05:28,598 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 18:05:28,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-04 18:05:28,722 INFO L93 Difference]: Finished difference Result 379 states and 607 transitions. [2021-07-04 18:05:28,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-04 18:05:28,723 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 18:05:28,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-04 18:05:28,724 INFO L225 Difference]: With dead ends: 379 [2021-07-04 18:05:28,725 INFO L226 Difference]: Without dead ends: 206 [2021-07-04 18:05:28,726 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 18:05:28,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2021-07-04 18:05:28,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 200. [2021-07-04 18:05:28,737 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 18:05:28,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 319 transitions. [2021-07-04 18:05:28,738 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 319 transitions. Word has length 61 [2021-07-04 18:05:28,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-04 18:05:28,740 INFO L442 AbstractCegarLoop]: Abstraction has 200 states and 319 transitions. [2021-07-04 18:05:28,741 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 18:05:28,741 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 319 transitions. [2021-07-04 18:05:28,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-07-04 18:05:28,753 INFO L517 BasicCegarLoop]: Found error trace [2021-07-04 18:05:28,753 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 18:05:28,754 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-07-04 18:05:28,754 INFO L374 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-04 18:05:28,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-04 18:05:28,756 INFO L82 PathProgramCache]: Analyzing trace with hash 1553952357, now seen corresponding path program 1 times [2021-07-04 18:05:28,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-04 18:05:28,756 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610323097] [2021-07-04 18:05:28,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-04 18:05:28,756 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-04 18:05:28,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-04 18:05:28,814 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:28,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-04 18:05:28,817 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:28,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-04 18:05:28,821 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:28,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-04 18:05:28,823 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 18:05:28,825 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-04 18:05:28,825 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610323097] [2021-07-04 18:05:28,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610323097] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-04 18:05:28,825 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-04 18:05:28,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-04 18:05:28,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009573057] [2021-07-04 18:05:28,826 INFO L425 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-04 18:05:28,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-04 18:05:28,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-04 18:05:28,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-04 18:05:28,831 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 18:05:28,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-04 18:05:28,956 INFO L93 Difference]: Finished difference Result 399 states and 636 transitions. [2021-07-04 18:05:28,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-04 18:05:28,957 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 18:05:28,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-04 18:05:28,958 INFO L225 Difference]: With dead ends: 399 [2021-07-04 18:05:28,958 INFO L226 Difference]: Without dead ends: 206 [2021-07-04 18:05:28,959 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-04 18:05:28,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2021-07-04 18:05:28,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 200. [2021-07-04 18:05:28,964 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 18:05:28,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 316 transitions. [2021-07-04 18:05:28,965 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 316 transitions. Word has length 62 [2021-07-04 18:05:28,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-04 18:05:28,965 INFO L442 AbstractCegarLoop]: Abstraction has 200 states and 316 transitions. [2021-07-04 18:05:28,965 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 18:05:28,966 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 316 transitions. [2021-07-04 18:05:28,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-07-04 18:05:28,967 INFO L517 BasicCegarLoop]: Found error trace [2021-07-04 18:05:28,967 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 18:05:28,967 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-07-04 18:05:28,967 INFO L374 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-04 18:05:28,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-04 18:05:28,968 INFO L82 PathProgramCache]: Analyzing trace with hash -844399215, now seen corresponding path program 1 times [2021-07-04 18:05:28,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-04 18:05:28,968 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558955949] [2021-07-04 18:05:28,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-04 18:05:28,969 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-04 18:05:28,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-04 18:05:29,017 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:29,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-04 18:05:29,021 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:29,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-04 18:05:29,027 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:29,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-04 18:05:29,028 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 18:05:29,028 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-04 18:05:29,028 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558955949] [2021-07-04 18:05:29,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558955949] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-04 18:05:29,029 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-04 18:05:29,029 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-04 18:05:29,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929939263] [2021-07-04 18:05:29,029 INFO L425 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-04 18:05:29,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-04 18:05:29,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-04 18:05:29,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-04 18:05:29,030 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 18:05:29,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-04 18:05:29,183 INFO L93 Difference]: Finished difference Result 435 states and 693 transitions. [2021-07-04 18:05:29,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-04 18:05:29,183 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 18:05:29,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-04 18:05:29,185 INFO L225 Difference]: With dead ends: 435 [2021-07-04 18:05:29,185 INFO L226 Difference]: Without dead ends: 241 [2021-07-04 18:05:29,186 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-04 18:05:29,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2021-07-04 18:05:29,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2021-07-04 18:05:29,193 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 18:05:29,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 386 transitions. [2021-07-04 18:05:29,194 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 386 transitions. Word has length 63 [2021-07-04 18:05:29,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-04 18:05:29,194 INFO L442 AbstractCegarLoop]: Abstraction has 241 states and 386 transitions. [2021-07-04 18:05:29,195 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 18:05:29,195 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 386 transitions. [2021-07-04 18:05:29,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-07-04 18:05:29,196 INFO L517 BasicCegarLoop]: Found error trace [2021-07-04 18:05:29,196 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 18:05:29,197 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-07-04 18:05:29,197 INFO L374 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-04 18:05:29,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-04 18:05:29,197 INFO L82 PathProgramCache]: Analyzing trace with hash 941248001, now seen corresponding path program 1 times [2021-07-04 18:05:29,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-04 18:05:29,199 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556509548] [2021-07-04 18:05:29,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-04 18:05:29,202 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-04 18:05:29,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-04 18:05:29,246 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:29,246 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-04 18:05:29,247 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:29,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-04 18:05:29,251 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:29,251 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-04 18:05:29,254 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 18:05:29,255 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-04 18:05:29,255 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556509548] [2021-07-04 18:05:29,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556509548] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-04 18:05:29,255 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-04 18:05:29,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-04 18:05:29,258 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038409527] [2021-07-04 18:05:29,258 INFO L425 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-04 18:05:29,258 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-04 18:05:29,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-04 18:05:29,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-04 18:05:29,259 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 18:05:29,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-04 18:05:29,366 INFO L93 Difference]: Finished difference Result 496 states and 797 transitions. [2021-07-04 18:05:29,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-04 18:05:29,368 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 18:05:29,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-04 18:05:29,371 INFO L225 Difference]: With dead ends: 496 [2021-07-04 18:05:29,371 INFO L226 Difference]: Without dead ends: 262 [2021-07-04 18:05:29,372 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-04 18:05:29,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-07-04 18:05:29,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 258. [2021-07-04 18:05:29,379 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 18:05:29,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 411 transitions. [2021-07-04 18:05:29,380 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 411 transitions. Word has length 78 [2021-07-04 18:05:29,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-04 18:05:29,380 INFO L442 AbstractCegarLoop]: Abstraction has 258 states and 411 transitions. [2021-07-04 18:05:29,382 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 18:05:29,383 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 411 transitions. [2021-07-04 18:05:29,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-07-04 18:05:29,383 INFO L517 BasicCegarLoop]: Found error trace [2021-07-04 18:05:29,385 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 18:05:29,385 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-07-04 18:05:29,386 INFO L374 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-04 18:05:29,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-04 18:05:29,386 INFO L82 PathProgramCache]: Analyzing trace with hash -2122902282, now seen corresponding path program 1 times [2021-07-04 18:05:29,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-04 18:05:29,386 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093317418] [2021-07-04 18:05:29,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-04 18:05:29,387 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-04 18:05:29,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-04 18:05:29,432 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:29,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-04 18:05:29,433 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:29,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-04 18:05:29,436 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:29,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-04 18:05:29,437 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 18:05:29,437 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-04 18:05:29,437 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093317418] [2021-07-04 18:05:29,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093317418] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-04 18:05:29,437 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-04 18:05:29,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-04 18:05:29,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823867870] [2021-07-04 18:05:29,438 INFO L425 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-04 18:05:29,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-04 18:05:29,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-04 18:05:29,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-04 18:05:29,439 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 18:05:29,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-04 18:05:29,551 INFO L93 Difference]: Finished difference Result 513 states and 817 transitions. [2021-07-04 18:05:29,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-04 18:05:29,551 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 18:05:29,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-04 18:05:29,553 INFO L225 Difference]: With dead ends: 513 [2021-07-04 18:05:29,553 INFO L226 Difference]: Without dead ends: 262 [2021-07-04 18:05:29,554 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 18:05:29,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-07-04 18:05:29,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 258. [2021-07-04 18:05:29,560 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 18:05:29,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 406 transitions. [2021-07-04 18:05:29,561 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 406 transitions. Word has length 79 [2021-07-04 18:05:29,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-04 18:05:29,562 INFO L442 AbstractCegarLoop]: Abstraction has 258 states and 406 transitions. [2021-07-04 18:05:29,562 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 18:05:29,562 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 406 transitions. [2021-07-04 18:05:29,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-07-04 18:05:29,563 INFO L517 BasicCegarLoop]: Found error trace [2021-07-04 18:05:29,563 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 18:05:29,563 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-07-04 18:05:29,563 INFO L374 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-04 18:05:29,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-04 18:05:29,564 INFO L82 PathProgramCache]: Analyzing trace with hash 893565514, now seen corresponding path program 1 times [2021-07-04 18:05:29,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-04 18:05:29,564 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171290400] [2021-07-04 18:05:29,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-04 18:05:29,564 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-04 18:05:29,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-04 18:05:29,583 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:29,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-04 18:05:29,584 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:29,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-04 18:05:29,587 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:29,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-04 18:05:29,588 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 18:05:29,588 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-04 18:05:29,588 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171290400] [2021-07-04 18:05:29,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171290400] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-04 18:05:29,589 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-04 18:05:29,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-04 18:05:29,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82302945] [2021-07-04 18:05:29,589 INFO L425 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-04 18:05:29,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-04 18:05:29,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-04 18:05:29,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-04 18:05:29,590 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 18:05:29,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-04 18:05:29,694 INFO L93 Difference]: Finished difference Result 527 states and 831 transitions. [2021-07-04 18:05:29,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-04 18:05:29,695 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 18:05:29,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-04 18:05:29,696 INFO L225 Difference]: With dead ends: 527 [2021-07-04 18:05:29,696 INFO L226 Difference]: Without dead ends: 276 [2021-07-04 18:05:29,697 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 18:05:29,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2021-07-04 18:05:29,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 273. [2021-07-04 18:05:29,703 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 18:05:29,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 426 transitions. [2021-07-04 18:05:29,704 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 426 transitions. Word has length 92 [2021-07-04 18:05:29,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-04 18:05:29,705 INFO L442 AbstractCegarLoop]: Abstraction has 273 states and 426 transitions. [2021-07-04 18:05:29,705 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 18:05:29,705 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 426 transitions. [2021-07-04 18:05:29,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-07-04 18:05:29,706 INFO L517 BasicCegarLoop]: Found error trace [2021-07-04 18:05:29,706 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 18:05:29,706 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-07-04 18:05:29,706 INFO L374 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-04 18:05:29,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-04 18:05:29,707 INFO L82 PathProgramCache]: Analyzing trace with hash -611041, now seen corresponding path program 1 times [2021-07-04 18:05:29,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-04 18:05:29,707 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538378122] [2021-07-04 18:05:29,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-04 18:05:29,707 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-04 18:05:29,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-04 18:05:29,732 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:29,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-04 18:05:29,733 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:29,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-04 18:05:29,736 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:29,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-04 18:05:29,737 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 18:05:29,737 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-04 18:05:29,737 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538378122] [2021-07-04 18:05:29,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538378122] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-04 18:05:29,738 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-04 18:05:29,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-04 18:05:29,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730166027] [2021-07-04 18:05:29,738 INFO L425 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-04 18:05:29,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-04 18:05:29,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-04 18:05:29,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-04 18:05:29,739 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 18:05:29,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-04 18:05:29,843 INFO L93 Difference]: Finished difference Result 542 states and 845 transitions. [2021-07-04 18:05:29,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-04 18:05:29,844 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 18:05:29,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-04 18:05:29,845 INFO L225 Difference]: With dead ends: 542 [2021-07-04 18:05:29,845 INFO L226 Difference]: Without dead ends: 276 [2021-07-04 18:05:29,846 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 18:05:29,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2021-07-04 18:05:29,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 273. [2021-07-04 18:05:29,853 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 18:05:29,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 420 transitions. [2021-07-04 18:05:29,854 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 420 transitions. Word has length 93 [2021-07-04 18:05:29,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-04 18:05:29,855 INFO L442 AbstractCegarLoop]: Abstraction has 273 states and 420 transitions. [2021-07-04 18:05:29,855 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 18:05:29,855 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 420 transitions. [2021-07-04 18:05:29,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-07-04 18:05:29,856 INFO L517 BasicCegarLoop]: Found error trace [2021-07-04 18:05:29,856 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 18:05:29,856 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-07-04 18:05:29,856 INFO L374 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-04 18:05:29,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-04 18:05:29,857 INFO L82 PathProgramCache]: Analyzing trace with hash 1667896352, now seen corresponding path program 1 times [2021-07-04 18:05:29,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-04 18:05:29,857 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376942831] [2021-07-04 18:05:29,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-04 18:05:29,858 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-04 18:05:29,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-04 18:05:29,879 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:29,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-04 18:05:29,881 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:29,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-04 18:05:29,884 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:29,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-04 18:05:29,884 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 18:05:29,885 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-04 18:05:29,885 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376942831] [2021-07-04 18:05:29,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376942831] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-04 18:05:29,885 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-04 18:05:29,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-04 18:05:29,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550895151] [2021-07-04 18:05:29,886 INFO L425 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-04 18:05:29,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-04 18:05:29,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-04 18:05:29,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-04 18:05:29,887 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 18:05:30,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-04 18:05:30,033 INFO L93 Difference]: Finished difference Result 591 states and 917 transitions. [2021-07-04 18:05:30,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-04 18:05:30,033 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 18:05:30,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-04 18:05:30,036 INFO L225 Difference]: With dead ends: 591 [2021-07-04 18:05:30,036 INFO L226 Difference]: Without dead ends: 325 [2021-07-04 18:05:30,037 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 18:05:30,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2021-07-04 18:05:30,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 323. [2021-07-04 18:05:30,046 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 18:05:30,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 504 transitions. [2021-07-04 18:05:30,047 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 504 transitions. Word has length 99 [2021-07-04 18:05:30,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-04 18:05:30,047 INFO L442 AbstractCegarLoop]: Abstraction has 323 states and 504 transitions. [2021-07-04 18:05:30,047 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 18:05:30,047 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 504 transitions. [2021-07-04 18:05:30,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-07-04 18:05:30,049 INFO L517 BasicCegarLoop]: Found error trace [2021-07-04 18:05:30,049 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 18:05:30,049 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-07-04 18:05:30,050 INFO L374 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-04 18:05:30,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-04 18:05:30,050 INFO L82 PathProgramCache]: Analyzing trace with hash 1592272523, now seen corresponding path program 1 times [2021-07-04 18:05:30,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-04 18:05:30,050 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149996262] [2021-07-04 18:05:30,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-04 18:05:30,050 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-04 18:05:30,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-04 18:05:30,075 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:30,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-04 18:05:30,076 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:30,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-04 18:05:30,079 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:30,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-04 18:05:30,080 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 18:05:30,080 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-04 18:05:30,080 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149996262] [2021-07-04 18:05:30,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149996262] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-04 18:05:30,080 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-04 18:05:30,080 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-04 18:05:30,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697545220] [2021-07-04 18:05:30,081 INFO L425 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-04 18:05:30,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-04 18:05:30,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-04 18:05:30,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-04 18:05:30,082 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 18:05:30,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-04 18:05:30,213 INFO L93 Difference]: Finished difference Result 642 states and 1001 transitions. [2021-07-04 18:05:30,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-04 18:05:30,214 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 18:05:30,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-04 18:05:30,215 INFO L225 Difference]: With dead ends: 642 [2021-07-04 18:05:30,215 INFO L226 Difference]: Without dead ends: 326 [2021-07-04 18:05:30,216 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 18:05:30,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2021-07-04 18:05:30,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 324. [2021-07-04 18:05:30,229 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 18:05:30,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 504 transitions. [2021-07-04 18:05:30,230 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 504 transitions. Word has length 100 [2021-07-04 18:05:30,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-04 18:05:30,231 INFO L442 AbstractCegarLoop]: Abstraction has 324 states and 504 transitions. [2021-07-04 18:05:30,231 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 18:05:30,231 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 504 transitions. [2021-07-04 18:05:30,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-07-04 18:05:30,232 INFO L517 BasicCegarLoop]: Found error trace [2021-07-04 18:05:30,232 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 18:05:30,232 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-07-04 18:05:30,232 INFO L374 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-04 18:05:30,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-04 18:05:30,233 INFO L82 PathProgramCache]: Analyzing trace with hash 311084899, now seen corresponding path program 1 times [2021-07-04 18:05:30,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-04 18:05:30,233 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380063167] [2021-07-04 18:05:30,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-04 18:05:30,233 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-04 18:05:30,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-04 18:05:30,258 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:30,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-04 18:05:30,259 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:30,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-04 18:05:30,263 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:30,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-04 18:05:30,264 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 18:05:30,264 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-04 18:05:30,264 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380063167] [2021-07-04 18:05:30,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380063167] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-04 18:05:30,264 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-04 18:05:30,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-04 18:05:30,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834073767] [2021-07-04 18:05:30,265 INFO L425 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-04 18:05:30,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-04 18:05:30,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-04 18:05:30,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-04 18:05:30,265 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 18:05:30,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-04 18:05:30,302 INFO L93 Difference]: Finished difference Result 954 states and 1486 transitions. [2021-07-04 18:05:30,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-04 18:05:30,303 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 18:05:30,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-04 18:05:30,306 INFO L225 Difference]: With dead ends: 954 [2021-07-04 18:05:30,306 INFO L226 Difference]: Without dead ends: 637 [2021-07-04 18:05:30,306 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 18:05:30,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2021-07-04 18:05:30,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 637. [2021-07-04 18:05:30,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 637 states, 636 states have (on average 1.5534591194968554) internal successors, (988), 636 states have internal predecessors, (988), 0 states have call successors, (0), 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 18:05:30,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 988 transitions. [2021-07-04 18:05:30,322 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 988 transitions. Word has length 105 [2021-07-04 18:05:30,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-04 18:05:30,322 INFO L442 AbstractCegarLoop]: Abstraction has 637 states and 988 transitions. [2021-07-04 18:05:30,322 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 18:05:30,323 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 988 transitions. [2021-07-04 18:05:30,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-07-04 18:05:30,324 INFO L517 BasicCegarLoop]: Found error trace [2021-07-04 18:05:30,324 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 18:05:30,324 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-07-04 18:05:30,324 INFO L374 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-04 18:05:30,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-04 18:05:30,325 INFO L82 PathProgramCache]: Analyzing trace with hash 990357153, now seen corresponding path program 1 times [2021-07-04 18:05:30,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-04 18:05:30,325 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010326859] [2021-07-04 18:05:30,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-04 18:05:30,325 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-04 18:05:30,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-04 18:05:30,343 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:30,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-04 18:05:30,344 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:30,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-04 18:05:30,346 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:30,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-04 18:05:30,347 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 18:05:30,347 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-04 18:05:30,347 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010326859] [2021-07-04 18:05:30,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010326859] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-04 18:05:30,348 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-04 18:05:30,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-04 18:05:30,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919249122] [2021-07-04 18:05:30,348 INFO L425 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-04 18:05:30,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-04 18:05:30,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-04 18:05:30,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-04 18:05:30,349 INFO L87 Difference]: Start difference. First operand 637 states and 988 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 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 18:05:30,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-04 18:05:30,389 INFO L93 Difference]: Finished difference Result 1559 states and 2422 transitions. [2021-07-04 18:05:30,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-04 18:05:30,389 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 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 18:05:30,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-04 18:05:30,393 INFO L225 Difference]: With dead ends: 1559 [2021-07-04 18:05:30,393 INFO L226 Difference]: Without dead ends: 929 [2021-07-04 18:05:30,394 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 18:05:30,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 929 states. [2021-07-04 18:05:30,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 929 to 929. [2021-07-04 18:05:30,415 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 18:05:30,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 1439 transitions. [2021-07-04 18:05:30,417 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 1439 transitions. Word has length 105 [2021-07-04 18:05:30,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-04 18:05:30,418 INFO L442 AbstractCegarLoop]: Abstraction has 929 states and 1439 transitions. [2021-07-04 18:05:30,418 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 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 18:05:30,418 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 1439 transitions. [2021-07-04 18:05:30,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-07-04 18:05:30,419 INFO L517 BasicCegarLoop]: Found error trace [2021-07-04 18:05:30,419 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 18:05:30,419 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-07-04 18:05:30,420 INFO L374 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-04 18:05:30,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-04 18:05:30,420 INFO L82 PathProgramCache]: Analyzing trace with hash 1829390815, now seen corresponding path program 1 times [2021-07-04 18:05:30,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-04 18:05:30,420 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702368432] [2021-07-04 18:05:30,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-04 18:05:30,420 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-04 18:05:30,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-04 18:05:30,437 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:30,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-04 18:05:30,438 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:30,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-04 18:05:30,440 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-04 18:05:30,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-04 18:05:30,441 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 18:05:30,441 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-04 18:05:30,441 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702368432] [2021-07-04 18:05:30,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702368432] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-04 18:05:30,441 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-04 18:05:30,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-04 18:05:30,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108398561] [2021-07-04 18:05:30,442 INFO L425 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-04 18:05:30,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-04 18:05:30,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-04 18:05:30,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-04 18:05:30,443 INFO L87 Difference]: Start difference. First operand 929 states and 1439 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 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 18:05:30,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-04 18:05:30,492 INFO L93 Difference]: Finished difference Result 2147 states and 3328 transitions. [2021-07-04 18:05:30,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-04 18:05:30,492 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 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 18:05:30,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-04 18:05:30,497 INFO L225 Difference]: With dead ends: 2147 [2021-07-04 18:05:30,497 INFO L226 Difference]: Without dead ends: 1225 [2021-07-04 18:05:30,498 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-04 18:05:30,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1225 states. [2021-07-04 18:05:30,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1225 to 1225. [2021-07-04 18:05:30,526 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 18:05:30,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1225 states to 1225 states and 1894 transitions. [2021-07-04 18:05:30,530 INFO L78 Accepts]: Start accepts. Automaton has 1225 states and 1894 transitions. Word has length 105 [2021-07-04 18:05:30,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-04 18:05:30,530 INFO L442 AbstractCegarLoop]: Abstraction has 1225 states and 1894 transitions. [2021-07-04 18:05:30,530 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 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 18:05:30,530 INFO L276 IsEmpty]: Start isEmpty. Operand 1225 states and 1894 transitions. [2021-07-04 18:05:30,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-07-04 18:05:30,532 INFO L517 BasicCegarLoop]: Found error trace [2021-07-04 18:05:30,532 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 18:05:30,532 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-07-04 18:05:30,532 INFO L374 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-04 18:05:30,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-04 18:05:30,533 INFO L82 PathProgramCache]: Analyzing trace with hash -915547054, now seen corresponding path program 1 times [2021-07-04 18:05:30,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-04 18:05:30,533 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749570450] [2021-07-04 18:05:30,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-04 18:05:30,533 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-04 18:05:30,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-04 18:05:30,557 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-04 18:05:30,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-04 18:05:30,576 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-04 18:05:30,616 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-04 18:05:30,617 INFO L639 BasicCegarLoop]: Counterexample is feasible [2021-07-04 18:05:30,619 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-07-04 18:05:30,619 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-04 18:05:30,714 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.07 06:05:30 BoogieIcfgContainer [2021-07-04 18:05:30,714 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-04 18:05:30,714 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-07-04 18:05:30,714 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-07-04 18:05:30,715 INFO L275 PluginConnector]: Witness Printer initialized [2021-07-04 18:05:30,715 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.07 06:05:27" (3/4) ... [2021-07-04 18:05:30,717 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-07-04 18:05:30,812 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-07-04 18:05:30,812 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-07-04 18:05:30,813 INFO L168 Benchmark]: Toolchain (without parser) took 4759.29 ms. Allocated memory was 67.1 MB in the beginning and 132.1 MB in the end (delta: 65.0 MB). Free memory was 47.5 MB in the beginning and 40.6 MB in the end (delta: 6.9 MB). Peak memory consumption was 74.4 MB. Max. memory is 16.1 GB. [2021-07-04 18:05:30,815 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 67.1 MB. Free memory is still 49.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-07-04 18:05:30,816 INFO L168 Benchmark]: CACSL2BoogieTranslator took 334.11 ms. Allocated memory is still 67.1 MB. Free memory was 47.4 MB in the beginning and 50.2 MB in the end (delta: -2.8 MB). Peak memory consumption was 18.7 MB. Max. memory is 16.1 GB. [2021-07-04 18:05:30,816 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.58 ms. Allocated memory is still 67.1 MB. Free memory was 49.9 MB in the beginning and 47.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-04 18:05:30,816 INFO L168 Benchmark]: Boogie Preprocessor took 31.85 ms. Allocated memory is still 67.1 MB. Free memory was 47.2 MB in the beginning and 45.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-04 18:05:30,819 INFO L168 Benchmark]: RCFGBuilder took 712.93 ms. Allocated memory was 67.1 MB in the beginning and 90.2 MB in the end (delta: 23.1 MB). Free memory was 45.1 MB in the beginning and 65.1 MB in the end (delta: -19.9 MB). Peak memory consumption was 27.8 MB. Max. memory is 16.1 GB. [2021-07-04 18:05:30,820 INFO L168 Benchmark]: TraceAbstraction took 3532.63 ms. Allocated memory was 90.2 MB in the beginning and 132.1 MB in the end (delta: 41.9 MB). Free memory was 64.6 MB in the beginning and 54.4 MB in the end (delta: 10.2 MB). Peak memory consumption was 51.0 MB. Max. memory is 16.1 GB. [2021-07-04 18:05:30,821 INFO L168 Benchmark]: Witness Printer took 97.95 ms. Allocated memory is still 132.1 MB. Free memory was 54.4 MB in the beginning and 40.6 MB in the end (delta: 13.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-07-04 18:05:30,824 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 67.1 MB. Free memory is still 49.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 334.11 ms. Allocated memory is still 67.1 MB. Free memory was 47.4 MB in the beginning and 50.2 MB in the end (delta: -2.8 MB). Peak memory consumption was 18.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.58 ms. Allocated memory is still 67.1 MB. Free memory was 49.9 MB in the beginning and 47.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 31.85 ms. Allocated memory is still 67.1 MB. Free memory was 47.2 MB in the beginning and 45.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 712.93 ms. Allocated memory was 67.1 MB in the beginning and 90.2 MB in the end (delta: 23.1 MB). Free memory was 45.1 MB in the beginning and 65.1 MB in the end (delta: -19.9 MB). Peak memory consumption was 27.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3532.63 ms. Allocated memory was 90.2 MB in the beginning and 132.1 MB in the end (delta: 41.9 MB). Free memory was 64.6 MB in the beginning and 54.4 MB in the end (delta: 10.2 MB). Peak memory consumption was 51.0 MB. Max. memory is 16.1 GB. * Witness Printer took 97.95 ms. Allocated memory is still 132.1 MB. Free memory was 54.4 MB in the beginning and 40.6 MB in the end (delta: 13.8 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: 550]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L555] int s ; [L559] s = 12292 [L13] int s__info_callback = __VERIFIER_nondet_int() ; [L14] int s__in_handshake = __VERIFIER_nondet_int() ; [L15] int s__state ; [L16] int s__new_session ; [L17] int s__server ; [L18] int s__version = __VERIFIER_nondet_int() ; [L19] int s__type ; [L20] int s__init_num ; [L21] int s__bbio = __VERIFIER_nondet_int() ; [L22] int s__wbio = __VERIFIER_nondet_int() ; [L23] int s__hit = __VERIFIER_nondet_int() ; [L24] int s__rwstate ; [L25] int s__init_buf___0 = __VERIFIER_nondet_int() ; [L26] int s__debug = __VERIFIER_nondet_int() ; [L27] int s__shutdown ; [L28] int s__ctx__info_callback = __VERIFIER_nondet_int() ; [L29] int s__ctx__stats__sess_connect_renegotiate = __VERIFIER_nondet_int() ; [L30] int s__ctx__stats__sess_connect = __VERIFIER_nondet_int() ; [L31] int s__ctx__stats__sess_hit = __VERIFIER_nondet_int() ; [L32] int s__ctx__stats__sess_connect_good = __VERIFIER_nondet_int() ; [L33] int s__s3__change_cipher_spec ; [L34] int s__s3__flags = __VERIFIER_nondet_int() ; [L35] int s__s3__delay_buf_pop_ret ; [L36] int s__s3__tmp__cert_req = __VERIFIER_nondet_int() ; [L37] int s__s3__tmp__new_compression = __VERIFIER_nondet_int() ; [L38] int s__s3__tmp__reuse_message = __VERIFIER_nondet_int() ; [L39] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int() ; [L40] int s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() ; [L41] int s__s3__tmp__next_state___0 ; [L42] int s__s3__tmp__new_compression__id = __VERIFIER_nondet_int() ; [L43] int s__session__cipher ; [L44] int s__session__compress_meth ; [L45] int buf ; [L46] unsigned long tmp ; [L47] unsigned long l ; [L48] int num1 = __VERIFIER_nondet_int() ; [L49] int cb ; [L50] int ret ; [L51] int new_state ; [L52] int state ; [L53] int skip ; [L54] int tmp___0 ; [L55] int tmp___1 = __VERIFIER_nondet_int() ; [L56] int tmp___2 = __VERIFIER_nondet_int() ; [L57] int tmp___3 = __VERIFIER_nondet_int() ; [L58] int tmp___4 = __VERIFIER_nondet_int() ; [L59] int tmp___5 = __VERIFIER_nondet_int() ; [L60] int tmp___6 = __VERIFIER_nondet_int() ; [L61] int tmp___7 = __VERIFIER_nondet_int() ; [L62] int tmp___8 = __VERIFIER_nondet_int() ; [L63] int tmp___9 = __VERIFIER_nondet_int() ; [L64] int blastFlag ; [L65] int __cil_tmp55 ; [L66] unsigned long __cil_tmp56 ; [L67] long __cil_tmp57 ; [L68] long __cil_tmp58 ; [L69] long __cil_tmp59 ; [L70] long __cil_tmp60 ; [L71] long __cil_tmp61 ; [L72] long __cil_tmp62 ; [L73] long __cil_tmp63 ; [L74] long __cil_tmp64 ; [L75] long __cil_tmp65 ; [L79] s__state = initial_state [L80] blastFlag = 0 [L81] tmp = __VERIFIER_nondet_int() [L82] cb = 0 [L83] ret = -1 [L84] skip = 0 [L85] tmp___0 = 0 [L86] COND TRUE s__info_callback != 0 [L87] cb = s__info_callback [L93] s__in_handshake ++ [L94] COND FALSE !(tmp___1 + 12288) [L100] COND TRUE 1 [L102] state = s__state [L103] COND TRUE s__state == 12292 [L205] s__new_session = 1 [L206] s__state = 4096 [L207] s__ctx__stats__sess_connect_renegotiate ++ [L212] s__server = 0 [L213] COND TRUE cb != 0 [L217] __cil_tmp55 = s__version + 65280 [L218] COND FALSE !(__cil_tmp55 != 768) [L223] s__type = 4096 [L224] COND FALSE !(s__init_buf___0 == 0) [L236] COND FALSE !(! tmp___4) [L240] COND FALSE !(! tmp___5) [L244] s__state = 4368 [L245] s__ctx__stats__sess_connect ++ [L246] s__init_num = 0 [L522] COND FALSE !(! s__s3__tmp__reuse_message) [L539] skip = 0 [L100] COND TRUE 1 [L102] state = s__state [L103] COND FALSE !(s__state == 12292) [L106] COND FALSE !(s__state == 16384) [L109] COND FALSE !(s__state == 4096) [L112] COND FALSE !(s__state == 20480) [L115] COND FALSE !(s__state == 4099) [L118] COND TRUE s__state == 4368 [L250] s__shutdown = 0 [L251] ret = __VERIFIER_nondet_int() [L252] COND TRUE blastFlag == 0 [L253] blastFlag = 1 [L255] COND FALSE !(ret <= 0) [L258] s__state = 4384 [L259] s__init_num = 0 [L260] COND TRUE s__bbio != s__wbio [L522] COND FALSE !(! s__s3__tmp__reuse_message) [L539] skip = 0 [L100] COND TRUE 1 [L102] state = s__state [L103] COND FALSE !(s__state == 12292) [L106] COND FALSE !(s__state == 16384) [L109] COND FALSE !(s__state == 4096) [L112] COND FALSE !(s__state == 20480) [L115] COND FALSE !(s__state == 4099) [L118] COND FALSE !(s__state == 4368) [L121] COND FALSE !(s__state == 4369) [L124] COND TRUE s__state == 4384 [L266] ret = __VERIFIER_nondet_int() [L267] COND TRUE blastFlag == 1 [L268] blastFlag = 2 [L270] COND FALSE !(ret <= 0) [L273] COND FALSE !(\read(s__hit)) [L276] s__state = 4400 [L278] s__init_num = 0 [L522] COND FALSE !(! s__s3__tmp__reuse_message) [L539] skip = 0 [L100] COND TRUE 1 [L102] state = s__state [L103] COND FALSE !(s__state == 12292) [L106] COND FALSE !(s__state == 16384) [L109] COND FALSE !(s__state == 4096) [L112] COND FALSE !(s__state == 20480) [L115] COND FALSE !(s__state == 4099) [L118] COND FALSE !(s__state == 4368) [L121] COND FALSE !(s__state == 4369) [L124] COND FALSE !(s__state == 4384) [L127] COND FALSE !(s__state == 4385) [L130] COND TRUE s__state == 4400 [L283] __cil_tmp56 = (unsigned long )s__s3__tmp__new_cipher__algorithms [L284] COND FALSE !(__cil_tmp56 + 256UL) [L287] ret = __VERIFIER_nondet_int() [L288] COND TRUE blastFlag == 2 [L289] blastFlag = 3 [L295] COND FALSE !(ret <= 0) [L300] s__state = 4416 [L301] s__init_num = 0 [L522] COND FALSE !(! s__s3__tmp__reuse_message) [L539] skip = 0 [L100] COND TRUE 1 [L102] state = s__state [L103] COND FALSE !(s__state == 12292) [L106] COND FALSE !(s__state == 16384) [L109] COND FALSE !(s__state == 4096) [L112] COND FALSE !(s__state == 20480) [L115] COND FALSE !(s__state == 4099) [L118] COND FALSE !(s__state == 4368) [L121] COND FALSE !(s__state == 4369) [L124] COND FALSE !(s__state == 4384) [L127] COND FALSE !(s__state == 4385) [L130] COND FALSE !(s__state == 4400) [L133] COND FALSE !(s__state == 4401) [L136] COND TRUE s__state == 4416 [L305] ret = __VERIFIER_nondet_int() [L306] COND TRUE blastFlag == 3 [L307] blastFlag = 4 [L309] COND FALSE !(ret <= 0) [L312] s__state = 4432 [L313] s__init_num = 0 [L314] COND FALSE !(! tmp___6) [L522] COND FALSE !(! s__s3__tmp__reuse_message) [L539] skip = 0 [L100] COND TRUE 1 [L102] state = s__state [L103] COND FALSE !(s__state == 12292) [L106] COND FALSE !(s__state == 16384) [L109] COND FALSE !(s__state == 4096) [L112] COND FALSE !(s__state == 20480) [L115] COND FALSE !(s__state == 4099) [L118] COND FALSE !(s__state == 4368) [L121] COND FALSE !(s__state == 4369) [L124] COND FALSE !(s__state == 4384) [L127] COND FALSE !(s__state == 4385) [L130] COND FALSE !(s__state == 4400) [L133] COND FALSE !(s__state == 4401) [L136] COND FALSE !(s__state == 4416) [L139] COND FALSE !(s__state == 4417) [L142] COND TRUE s__state == 4432 [L321] ret = __VERIFIER_nondet_int() [L322] COND TRUE blastFlag == 4 [L550] 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: 3376.0ms, OverallIterations: 17, TraceHistogramMax: 6, EmptinessCheckTime: 42.2ms, AutomataDifference: 1993.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 14.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 2205 SDtfs, 2042 SDslu, 687 SDs, 0 SdLazy, 1141 SolverSat, 474 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1150.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 44.8ms 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: 219.7ms AutomataMinimizationTime, 16 MinimizatonAttempts, 46 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 51.7ms SsaConstructionTime, 239.3ms SatisfiabilityAnalysisTime, 531.1ms InterpolantComputationTime, 1287 NumberOfCodeBlocks, 1287 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 1164 ConstructedInterpolants, 0 QuantifiedInterpolants, 2101 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 18:05:30,864 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...