./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/openssl-simplified/s3_srvr_1.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4250c1ab-db33-415a-8427-49baa6ddc02d/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4250c1ab-db33-415a-8427-49baa6ddc02d/bin/uautomizer-WNIpwEf4Nt/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4250c1ab-db33-415a-8427-49baa6ddc02d/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4250c1ab-db33-415a-8427-49baa6ddc02d/bin/uautomizer-WNIpwEf4Nt/config/AutomizerReach.xml -i ../../sv-benchmarks/c/openssl-simplified/s3_srvr_1.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4250c1ab-db33-415a-8427-49baa6ddc02d/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4250c1ab-db33-415a-8427-49baa6ddc02d/bin/uautomizer-WNIpwEf4Nt --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 a3bbefcee290f98530e25ab3f5cc4cda5aa0150b ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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-dev-4e77c04 [2021-10-13 01:02:37,493 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 01:02:37,497 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 01:02:37,563 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 01:02:37,563 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 01:02:37,569 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 01:02:37,570 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 01:02:37,574 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 01:02:37,577 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 01:02:37,582 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 01:02:37,583 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 01:02:37,585 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 01:02:37,586 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 01:02:37,588 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 01:02:37,590 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 01:02:37,594 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 01:02:37,596 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 01:02:37,597 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 01:02:37,599 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 01:02:37,607 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 01:02:37,609 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 01:02:37,611 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 01:02:37,614 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 01:02:37,615 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 01:02:37,619 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 01:02:37,619 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 01:02:37,620 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 01:02:37,622 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 01:02:37,622 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 01:02:37,624 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 01:02:37,624 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 01:02:37,625 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 01:02:37,628 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 01:02:37,629 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 01:02:37,630 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 01:02:37,631 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 01:02:37,632 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 01:02:37,632 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 01:02:37,632 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 01:02:37,633 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 01:02:37,634 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 01:02:37,635 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4250c1ab-db33-415a-8427-49baa6ddc02d/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-13 01:02:37,679 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 01:02:37,680 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 01:02:37,681 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 01:02:37,681 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 01:02:37,683 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 01:02:37,683 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 01:02:37,683 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 01:02:37,683 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 01:02:37,684 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 01:02:37,684 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 01:02:37,685 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 01:02:37,685 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 01:02:37,686 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 01:02:37,686 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 01:02:37,686 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 01:02:37,686 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 01:02:37,686 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 01:02:37,687 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 01:02:37,687 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 01:02:37,687 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 01:02:37,687 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 01:02:37,688 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 01:02:37,688 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 01:02:37,688 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 01:02:37,688 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 01:02:37,689 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 01:02:37,689 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 01:02:37,689 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 01:02:37,689 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 01:02:37,691 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 01:02:37,691 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4250c1ab-db33-415a-8427-49baa6ddc02d/bin/uautomizer-WNIpwEf4Nt/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4250c1ab-db33-415a-8427-49baa6ddc02d/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a3bbefcee290f98530e25ab3f5cc4cda5aa0150b [2021-10-13 01:02:38,005 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 01:02:38,028 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 01:02:38,032 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 01:02:38,034 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 01:02:38,034 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 01:02:38,035 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4250c1ab-db33-415a-8427-49baa6ddc02d/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/openssl-simplified/s3_srvr_1.cil-1.c [2021-10-13 01:02:38,106 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4250c1ab-db33-415a-8427-49baa6ddc02d/bin/uautomizer-WNIpwEf4Nt/data/ae7afff70/44955dee836b4b688e75136adcb0e931/FLAGecf7c4c60 [2021-10-13 01:02:38,694 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 01:02:38,695 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4250c1ab-db33-415a-8427-49baa6ddc02d/sv-benchmarks/c/openssl-simplified/s3_srvr_1.cil-1.c [2021-10-13 01:02:38,708 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4250c1ab-db33-415a-8427-49baa6ddc02d/bin/uautomizer-WNIpwEf4Nt/data/ae7afff70/44955dee836b4b688e75136adcb0e931/FLAGecf7c4c60 [2021-10-13 01:02:39,008 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4250c1ab-db33-415a-8427-49baa6ddc02d/bin/uautomizer-WNIpwEf4Nt/data/ae7afff70/44955dee836b4b688e75136adcb0e931 [2021-10-13 01:02:39,010 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 01:02:39,011 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 01:02:39,013 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 01:02:39,013 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 01:02:39,017 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 01:02:39,017 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:02:39" (1/1) ... [2021-10-13 01:02:39,019 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29449e71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:02:39, skipping insertion in model container [2021-10-13 01:02:39,019 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:02:39" (1/1) ... [2021-10-13 01:02:39,026 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 01:02:39,062 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 01:02:39,312 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4250c1ab-db33-415a-8427-49baa6ddc02d/sv-benchmarks/c/openssl-simplified/s3_srvr_1.cil-1.c[42831,42844] [2021-10-13 01:02:39,333 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 01:02:39,345 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 01:02:39,435 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4250c1ab-db33-415a-8427-49baa6ddc02d/sv-benchmarks/c/openssl-simplified/s3_srvr_1.cil-1.c[42831,42844] [2021-10-13 01:02:39,437 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 01:02:39,450 INFO L208 MainTranslator]: Completed translation [2021-10-13 01:02:39,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:02:39 WrapperNode [2021-10-13 01:02:39,450 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 01:02:39,451 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 01:02:39,452 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 01:02:39,452 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 01:02:39,459 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:02:39" (1/1) ... [2021-10-13 01:02:39,469 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:02:39" (1/1) ... [2021-10-13 01:02:39,520 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 01:02:39,521 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 01:02:39,522 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 01:02:39,522 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 01:02:39,530 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:02:39" (1/1) ... [2021-10-13 01:02:39,530 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:02:39" (1/1) ... [2021-10-13 01:02:39,544 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:02:39" (1/1) ... [2021-10-13 01:02:39,544 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:02:39" (1/1) ... [2021-10-13 01:02:39,569 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:02:39" (1/1) ... [2021-10-13 01:02:39,576 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:02:39" (1/1) ... [2021-10-13 01:02:39,579 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:02:39" (1/1) ... [2021-10-13 01:02:39,583 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 01:02:39,584 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 01:02:39,584 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 01:02:39,584 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 01:02:39,600 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:02:39" (1/1) ... [2021-10-13 01:02:39,607 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 01:02:39,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4250c1ab-db33-415a-8427-49baa6ddc02d/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:02:39,631 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4250c1ab-db33-415a-8427-49baa6ddc02d/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 01:02:39,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4250c1ab-db33-415a-8427-49baa6ddc02d/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 01:02:39,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 01:02:39,690 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 01:02:39,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 01:02:39,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 01:02:39,883 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-13 01:02:40,348 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2021-10-13 01:02:40,348 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2021-10-13 01:02:40,357 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 01:02:40,358 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-13 01:02:40,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:02:40 BoogieIcfgContainer [2021-10-13 01:02:40,360 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 01:02:40,362 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 01:02:40,362 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 01:02:40,365 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 01:02:40,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 01:02:39" (1/3) ... [2021-10-13 01:02:40,366 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48bc610 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:02:40, skipping insertion in model container [2021-10-13 01:02:40,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:02:39" (2/3) ... [2021-10-13 01:02:40,367 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48bc610 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:02:40, skipping insertion in model container [2021-10-13 01:02:40,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:02:40" (3/3) ... [2021-10-13 01:02:40,369 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr_1.cil-1.c [2021-10-13 01:02:40,374 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 01:02:40,374 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 01:02:40,424 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 01:02:40,430 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 01:02:40,430 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 01:02:40,458 INFO L276 IsEmpty]: Start isEmpty. Operand has 143 states, 141 states have (on average 1.7163120567375887) internal successors, (242), 142 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:02:40,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-10-13 01:02:40,472 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:02:40,473 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:02:40,474 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 01:02:40,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:02:40,482 INFO L82 PathProgramCache]: Analyzing trace with hash -947483198, now seen corresponding path program 1 times [2021-10-13 01:02:40,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:02:40,494 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078441851] [2021-10-13 01:02:40,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:02:40,495 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:02:40,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:02:40,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:02:40,787 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:02:40,787 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078441851] [2021-10-13 01:02:40,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078441851] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:02:40,788 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:02:40,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 01:02:40,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884543687] [2021-10-13 01:02:40,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 01:02:40,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:02:40,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 01:02:40,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 01:02:40,835 INFO L87 Difference]: Start difference. First operand has 143 states, 141 states have (on average 1.7163120567375887) internal successors, (242), 142 states have internal predecessors, (242), 0 states have call successors, (0), 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 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) [2021-10-13 01:02:41,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:02:41,074 INFO L93 Difference]: Finished difference Result 333 states and 570 transitions. [2021-10-13 01:02:41,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 01:02:41,076 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 [2021-10-13 01:02:41,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:02:41,088 INFO L225 Difference]: With dead ends: 333 [2021-10-13 01:02:41,088 INFO L226 Difference]: Without dead ends: 178 [2021-10-13 01:02:41,091 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 01:02:41,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2021-10-13 01:02:41,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 172. [2021-10-13 01:02:41,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 171 states have (on average 1.6257309941520468) internal successors, (278), 171 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:02:41,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 278 transitions. [2021-10-13 01:02:41,143 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 278 transitions. Word has length 45 [2021-10-13 01:02:41,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:02:41,144 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 278 transitions. [2021-10-13 01:02:41,144 INFO L471 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) [2021-10-13 01:02:41,144 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 278 transitions. [2021-10-13 01:02:41,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-10-13 01:02:41,147 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:02:41,147 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:02:41,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 01:02:41,148 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 01:02:41,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:02:41,148 INFO L82 PathProgramCache]: Analyzing trace with hash 472840096, now seen corresponding path program 1 times [2021-10-13 01:02:41,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:02:41,149 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379101830] [2021-10-13 01:02:41,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:02:41,149 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:02:41,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:02:41,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:02:41,227 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:02:41,227 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379101830] [2021-10-13 01:02:41,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379101830] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:02:41,227 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:02:41,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 01:02:41,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442436777] [2021-10-13 01:02:41,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 01:02:41,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:02:41,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 01:02:41,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 01:02:41,231 INFO L87 Difference]: Start difference. First operand 172 states and 278 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) [2021-10-13 01:02:41,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:02:41,451 INFO L93 Difference]: Finished difference Result 385 states and 632 transitions. [2021-10-13 01:02:41,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 01:02:41,452 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 46 [2021-10-13 01:02:41,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:02:41,459 INFO L225 Difference]: With dead ends: 385 [2021-10-13 01:02:41,460 INFO L226 Difference]: Without dead ends: 219 [2021-10-13 01:02:41,462 INFO L781 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 [2021-10-13 01:02:41,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2021-10-13 01:02:41,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 213. [2021-10-13 01:02:41,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 212 states have (on average 1.6745283018867925) internal successors, (355), 212 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:02:41,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 355 transitions. [2021-10-13 01:02:41,508 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 355 transitions. Word has length 46 [2021-10-13 01:02:41,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:02:41,509 INFO L470 AbstractCegarLoop]: Abstraction has 213 states and 355 transitions. [2021-10-13 01:02:41,509 INFO L471 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) [2021-10-13 01:02:41,510 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 355 transitions. [2021-10-13 01:02:41,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-10-13 01:02:41,514 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:02:41,516 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:02:41,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 01:02:41,518 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 01:02:41,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:02:41,518 INFO L82 PathProgramCache]: Analyzing trace with hash 488183924, now seen corresponding path program 1 times [2021-10-13 01:02:41,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:02:41,520 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354781260] [2021-10-13 01:02:41,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:02:41,521 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:02:41,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:02:41,657 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:02:41,658 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:02:41,658 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354781260] [2021-10-13 01:02:41,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354781260] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:02:41,658 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:02:41,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 01:02:41,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221892815] [2021-10-13 01:02:41,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 01:02:41,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:02:41,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 01:02:41,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 01:02:41,661 INFO L87 Difference]: Start difference. First operand 213 states and 355 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:02:41,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:02:41,836 INFO L93 Difference]: Finished difference Result 449 states and 756 transitions. [2021-10-13 01:02:41,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 01:02:41,837 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2021-10-13 01:02:41,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:02:41,840 INFO L225 Difference]: With dead ends: 449 [2021-10-13 01:02:41,840 INFO L226 Difference]: Without dead ends: 244 [2021-10-13 01:02:41,843 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 01:02:41,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2021-10-13 01:02:41,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 244. [2021-10-13 01:02:41,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 243 states have (on average 1.691358024691358) internal successors, (411), 243 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) [2021-10-13 01:02:41,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 411 transitions. [2021-10-13 01:02:41,905 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 411 transitions. Word has length 74 [2021-10-13 01:02:41,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:02:41,906 INFO L470 AbstractCegarLoop]: Abstraction has 244 states and 411 transitions. [2021-10-13 01:02:41,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:02:41,906 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 411 transitions. [2021-10-13 01:02:41,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-10-13 01:02:41,921 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:02:41,921 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:02:41,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-13 01:02:41,923 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 01:02:41,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:02:41,924 INFO L82 PathProgramCache]: Analyzing trace with hash -1651483739, now seen corresponding path program 1 times [2021-10-13 01:02:41,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:02:41,926 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214921478] [2021-10-13 01:02:41,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:02:41,927 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:02:41,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:02:42,047 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:02:42,048 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:02:42,048 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214921478] [2021-10-13 01:02:42,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214921478] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:02:42,053 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:02:42,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 01:02:42,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153846464] [2021-10-13 01:02:42,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 01:02:42,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:02:42,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 01:02:42,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 01:02:42,056 INFO L87 Difference]: Start difference. First operand 244 states and 411 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:02:42,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:02:42,231 INFO L93 Difference]: Finished difference Result 526 states and 892 transitions. [2021-10-13 01:02:42,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 01:02:42,232 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-10-13 01:02:42,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:02:42,236 INFO L225 Difference]: With dead ends: 526 [2021-10-13 01:02:42,236 INFO L226 Difference]: Without dead ends: 290 [2021-10-13 01:02:42,238 INFO L781 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 [2021-10-13 01:02:42,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2021-10-13 01:02:42,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 286. [2021-10-13 01:02:42,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 285 states have (on average 1.7052631578947368) internal successors, (486), 285 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:02:42,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 486 transitions. [2021-10-13 01:02:42,257 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 486 transitions. Word has length 85 [2021-10-13 01:02:42,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:02:42,259 INFO L470 AbstractCegarLoop]: Abstraction has 286 states and 486 transitions. [2021-10-13 01:02:42,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:02:42,260 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 486 transitions. [2021-10-13 01:02:42,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-10-13 01:02:42,266 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:02:42,267 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:02:42,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-13 01:02:42,267 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 01:02:42,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:02:42,269 INFO L82 PathProgramCache]: Analyzing trace with hash -1358393014, now seen corresponding path program 1 times [2021-10-13 01:02:42,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:02:42,270 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788326203] [2021-10-13 01:02:42,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:02:42,271 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:02:42,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:02:42,374 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-10-13 01:02:42,375 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:02:42,375 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788326203] [2021-10-13 01:02:42,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788326203] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:02:42,375 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:02:42,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 01:02:42,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872701529] [2021-10-13 01:02:42,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 01:02:42,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:02:42,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 01:02:42,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 01:02:42,379 INFO L87 Difference]: Start difference. First operand 286 states and 486 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:02:42,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:02:42,492 INFO L93 Difference]: Finished difference Result 581 states and 988 transitions. [2021-10-13 01:02:42,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 01:02:42,493 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2021-10-13 01:02:42,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:02:42,495 INFO L225 Difference]: With dead ends: 581 [2021-10-13 01:02:42,496 INFO L226 Difference]: Without dead ends: 303 [2021-10-13 01:02:42,497 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 01:02:42,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2021-10-13 01:02:42,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 301. [2021-10-13 01:02:42,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 300 states have (on average 1.6933333333333334) internal successors, (508), 300 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:02:42,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 508 transitions. [2021-10-13 01:02:42,513 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 508 transitions. Word has length 86 [2021-10-13 01:02:42,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:02:42,515 INFO L470 AbstractCegarLoop]: Abstraction has 301 states and 508 transitions. [2021-10-13 01:02:42,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:02:42,515 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 508 transitions. [2021-10-13 01:02:42,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-10-13 01:02:42,519 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:02:42,520 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:02:42,520 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-13 01:02:42,520 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 01:02:42,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:02:42,521 INFO L82 PathProgramCache]: Analyzing trace with hash 709328611, now seen corresponding path program 1 times [2021-10-13 01:02:42,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:02:42,522 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988080405] [2021-10-13 01:02:42,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:02:42,522 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:02:42,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:02:42,617 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:02:42,617 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:02:42,617 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988080405] [2021-10-13 01:02:42,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988080405] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:02:42,618 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:02:42,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 01:02:42,618 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342939327] [2021-10-13 01:02:42,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 01:02:42,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:02:42,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 01:02:42,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 01:02:42,620 INFO L87 Difference]: Start difference. First operand 301 states and 508 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:02:42,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:02:42,787 INFO L93 Difference]: Finished difference Result 598 states and 1009 transitions. [2021-10-13 01:02:42,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 01:02:42,787 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 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 86 [2021-10-13 01:02:42,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:02:42,799 INFO L225 Difference]: With dead ends: 598 [2021-10-13 01:02:42,800 INFO L226 Difference]: Without dead ends: 303 [2021-10-13 01:02:42,800 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 01:02:42,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2021-10-13 01:02:42,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 299. [2021-10-13 01:02:42,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 298 states have (on average 1.6879194630872483) internal successors, (503), 298 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:02:42,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 503 transitions. [2021-10-13 01:02:42,814 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 503 transitions. Word has length 86 [2021-10-13 01:02:42,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:02:42,814 INFO L470 AbstractCegarLoop]: Abstraction has 299 states and 503 transitions. [2021-10-13 01:02:42,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:02:42,815 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 503 transitions. [2021-10-13 01:02:42,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-10-13 01:02:42,821 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:02:42,822 INFO L512 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:02:42,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-13 01:02:42,822 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 01:02:42,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:02:42,823 INFO L82 PathProgramCache]: Analyzing trace with hash 564851953, now seen corresponding path program 1 times [2021-10-13 01:02:42,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:02:42,828 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046878542] [2021-10-13 01:02:42,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:02:42,828 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:02:42,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:02:42,876 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-10-13 01:02:42,876 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:02:42,877 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046878542] [2021-10-13 01:02:42,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046878542] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:02:42,877 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:02:42,877 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 01:02:42,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778733798] [2021-10-13 01:02:42,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 01:02:42,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:02:42,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 01:02:42,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 01:02:42,889 INFO L87 Difference]: Start difference. First operand 299 states and 503 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:02:42,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:02:42,988 INFO L93 Difference]: Finished difference Result 592 states and 996 transitions. [2021-10-13 01:02:42,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 01:02:42,989 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 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 87 [2021-10-13 01:02:42,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:02:42,992 INFO L225 Difference]: With dead ends: 592 [2021-10-13 01:02:42,992 INFO L226 Difference]: Without dead ends: 301 [2021-10-13 01:02:42,993 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 01:02:42,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2021-10-13 01:02:43,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 299. [2021-10-13 01:02:43,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 298 states have (on average 1.674496644295302) internal successors, (499), 298 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:02:43,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 499 transitions. [2021-10-13 01:02:43,004 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 499 transitions. Word has length 87 [2021-10-13 01:02:43,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:02:43,005 INFO L470 AbstractCegarLoop]: Abstraction has 299 states and 499 transitions. [2021-10-13 01:02:43,005 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:02:43,005 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 499 transitions. [2021-10-13 01:02:43,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-10-13 01:02:43,007 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:02:43,007 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:02:43,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-13 01:02:43,007 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 01:02:43,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:02:43,008 INFO L82 PathProgramCache]: Analyzing trace with hash 19025617, now seen corresponding path program 1 times [2021-10-13 01:02:43,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:02:43,009 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267121651] [2021-10-13 01:02:43,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:02:43,009 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:02:43,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:02:43,056 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-10-13 01:02:43,056 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:02:43,057 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267121651] [2021-10-13 01:02:43,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267121651] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:02:43,057 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:02:43,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 01:02:43,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052421552] [2021-10-13 01:02:43,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 01:02:43,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:02:43,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 01:02:43,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 01:02:43,060 INFO L87 Difference]: Start difference. First operand 299 states and 499 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:02:43,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:02:43,149 INFO L93 Difference]: Finished difference Result 599 states and 998 transitions. [2021-10-13 01:02:43,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 01:02:43,149 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 [2021-10-13 01:02:43,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:02:43,151 INFO L225 Difference]: With dead ends: 599 [2021-10-13 01:02:43,152 INFO L226 Difference]: Without dead ends: 308 [2021-10-13 01:02:43,152 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 01:02:43,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2021-10-13 01:02:43,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 308. [2021-10-13 01:02:43,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 307 states have (on average 1.6449511400651466) internal successors, (505), 307 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:02:43,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 505 transitions. [2021-10-13 01:02:43,166 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 505 transitions. Word has length 100 [2021-10-13 01:02:43,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:02:43,167 INFO L470 AbstractCegarLoop]: Abstraction has 308 states and 505 transitions. [2021-10-13 01:02:43,167 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:02:43,167 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 505 transitions. [2021-10-13 01:02:43,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-10-13 01:02:43,168 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:02:43,169 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:02:43,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-13 01:02:43,169 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 01:02:43,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:02:43,170 INFO L82 PathProgramCache]: Analyzing trace with hash 1778247501, now seen corresponding path program 1 times [2021-10-13 01:02:43,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:02:43,170 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798029767] [2021-10-13 01:02:43,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:02:43,171 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:02:43,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:02:43,210 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-10-13 01:02:43,210 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:02:43,210 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798029767] [2021-10-13 01:02:43,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798029767] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:02:43,211 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:02:43,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 01:02:43,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314567873] [2021-10-13 01:02:43,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 01:02:43,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:02:43,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 01:02:43,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 01:02:43,215 INFO L87 Difference]: Start difference. First operand 308 states and 505 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) [2021-10-13 01:02:43,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:02:43,333 INFO L93 Difference]: Finished difference Result 639 states and 1051 transitions. [2021-10-13 01:02:43,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 01:02:43,334 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 100 [2021-10-13 01:02:43,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:02:43,338 INFO L225 Difference]: With dead ends: 639 [2021-10-13 01:02:43,338 INFO L226 Difference]: Without dead ends: 339 [2021-10-13 01:02:43,339 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 01:02:43,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2021-10-13 01:02:43,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 337. [2021-10-13 01:02:43,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 336 states have (on average 1.6428571428571428) internal successors, (552), 336 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:02:43,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 552 transitions. [2021-10-13 01:02:43,354 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 552 transitions. Word has length 100 [2021-10-13 01:02:43,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:02:43,354 INFO L470 AbstractCegarLoop]: Abstraction has 337 states and 552 transitions. [2021-10-13 01:02:43,354 INFO L471 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) [2021-10-13 01:02:43,355 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 552 transitions. [2021-10-13 01:02:43,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-10-13 01:02:43,356 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:02:43,356 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:02:43,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-13 01:02:43,357 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 01:02:43,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:02:43,357 INFO L82 PathProgramCache]: Analyzing trace with hash -1388103916, now seen corresponding path program 1 times [2021-10-13 01:02:43,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:02:43,359 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841508046] [2021-10-13 01:02:43,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:02:43,359 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:02:43,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:02:43,397 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-10-13 01:02:43,397 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:02:43,397 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841508046] [2021-10-13 01:02:43,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841508046] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:02:43,398 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:02:43,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 01:02:43,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116079686] [2021-10-13 01:02:43,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 01:02:43,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:02:43,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 01:02:43,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 01:02:43,405 INFO L87 Difference]: Start difference. First operand 337 states and 552 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:02:43,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:02:43,530 INFO L93 Difference]: Finished difference Result 668 states and 1094 transitions. [2021-10-13 01:02:43,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 01:02:43,530 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2021-10-13 01:02:43,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:02:43,533 INFO L225 Difference]: With dead ends: 668 [2021-10-13 01:02:43,533 INFO L226 Difference]: Without dead ends: 339 [2021-10-13 01:02:43,534 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 01:02:43,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2021-10-13 01:02:43,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 337. [2021-10-13 01:02:43,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 336 states have (on average 1.630952380952381) internal successors, (548), 336 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:02:43,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 548 transitions. [2021-10-13 01:02:43,547 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 548 transitions. Word has length 101 [2021-10-13 01:02:43,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:02:43,549 INFO L470 AbstractCegarLoop]: Abstraction has 337 states and 548 transitions. [2021-10-13 01:02:43,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:02:43,549 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 548 transitions. [2021-10-13 01:02:43,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-10-13 01:02:43,551 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:02:43,551 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-10-13 01:02:43,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-13 01:02:43,552 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 01:02:43,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:02:43,552 INFO L82 PathProgramCache]: Analyzing trace with hash -916073731, now seen corresponding path program 1 times [2021-10-13 01:02:43,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:02:43,555 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143288271] [2021-10-13 01:02:43,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:02:43,555 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:02:43,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:02:43,612 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-10-13 01:02:43,613 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:02:43,614 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143288271] [2021-10-13 01:02:43,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143288271] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:02:43,614 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:02:43,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 01:02:43,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142076199] [2021-10-13 01:02:43,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 01:02:43,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:02:43,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 01:02:43,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 01:02:43,617 INFO L87 Difference]: Start difference. First operand 337 states and 548 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:02:43,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:02:43,737 INFO L93 Difference]: Finished difference Result 701 states and 1144 transitions. [2021-10-13 01:02:43,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 01:02:43,738 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2021-10-13 01:02:43,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:02:43,741 INFO L225 Difference]: With dead ends: 701 [2021-10-13 01:02:43,741 INFO L226 Difference]: Without dead ends: 372 [2021-10-13 01:02:43,742 INFO L781 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 [2021-10-13 01:02:43,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2021-10-13 01:02:43,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 364. [2021-10-13 01:02:43,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 363 states have (on average 1.6253443526170799) internal successors, (590), 363 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:02:43,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 590 transitions. [2021-10-13 01:02:43,757 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 590 transitions. Word has length 102 [2021-10-13 01:02:43,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:02:43,757 INFO L470 AbstractCegarLoop]: Abstraction has 364 states and 590 transitions. [2021-10-13 01:02:43,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:02:43,758 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 590 transitions. [2021-10-13 01:02:43,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-10-13 01:02:43,759 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:02:43,760 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:02:43,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-13 01:02:43,760 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 01:02:43,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:02:43,761 INFO L82 PathProgramCache]: Analyzing trace with hash 62624868, now seen corresponding path program 1 times [2021-10-13 01:02:43,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:02:43,761 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561272834] [2021-10-13 01:02:43,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:02:43,761 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:02:43,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:02:43,793 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-10-13 01:02:43,793 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:02:43,793 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561272834] [2021-10-13 01:02:43,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561272834] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:02:43,794 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:02:43,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 01:02:43,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469052359] [2021-10-13 01:02:43,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 01:02:43,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:02:43,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 01:02:43,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 01:02:43,796 INFO L87 Difference]: Start difference. First operand 364 states and 590 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:02:43,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:02:43,920 INFO L93 Difference]: Finished difference Result 728 states and 1181 transitions. [2021-10-13 01:02:43,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 01:02:43,921 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2021-10-13 01:02:43,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:02:43,926 INFO L225 Difference]: With dead ends: 728 [2021-10-13 01:02:43,926 INFO L226 Difference]: Without dead ends: 372 [2021-10-13 01:02:43,927 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 01:02:43,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2021-10-13 01:02:43,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 364. [2021-10-13 01:02:43,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 363 states have (on average 1.6115702479338843) internal successors, (585), 363 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:02:43,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 585 transitions. [2021-10-13 01:02:43,946 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 585 transitions. Word has length 103 [2021-10-13 01:02:43,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:02:43,946 INFO L470 AbstractCegarLoop]: Abstraction has 364 states and 585 transitions. [2021-10-13 01:02:43,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:02:43,947 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 585 transitions. [2021-10-13 01:02:43,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-10-13 01:02:43,948 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:02:43,949 INFO L512 BasicCegarLoop]: trace histogram [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, 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] [2021-10-13 01:02:43,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-13 01:02:43,949 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 01:02:43,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:02:43,950 INFO L82 PathProgramCache]: Analyzing trace with hash -1773852357, now seen corresponding path program 1 times [2021-10-13 01:02:43,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:02:43,950 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354724920] [2021-10-13 01:02:43,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:02:43,951 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:02:43,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:02:43,984 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-10-13 01:02:43,984 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:02:43,984 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354724920] [2021-10-13 01:02:43,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354724920] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:02:43,985 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:02:43,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 01:02:43,985 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121164935] [2021-10-13 01:02:43,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 01:02:43,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:02:43,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 01:02:43,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 01:02:43,987 INFO L87 Difference]: Start difference. First operand 364 states and 585 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:02:44,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:02:44,099 INFO L93 Difference]: Finished difference Result 745 states and 1199 transitions. [2021-10-13 01:02:44,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 01:02:44,100 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-10-13 01:02:44,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:02:44,103 INFO L225 Difference]: With dead ends: 745 [2021-10-13 01:02:44,103 INFO L226 Difference]: Without dead ends: 389 [2021-10-13 01:02:44,103 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 01:02:44,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2021-10-13 01:02:44,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 385. [2021-10-13 01:02:44,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 1.5989583333333333) internal successors, (614), 384 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:02:44,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 614 transitions. [2021-10-13 01:02:44,121 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 614 transitions. Word has length 106 [2021-10-13 01:02:44,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:02:44,121 INFO L470 AbstractCegarLoop]: Abstraction has 385 states and 614 transitions. [2021-10-13 01:02:44,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:02:44,121 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 614 transitions. [2021-10-13 01:02:44,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-10-13 01:02:44,123 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:02:44,123 INFO L512 BasicCegarLoop]: trace histogram [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, 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] [2021-10-13 01:02:44,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-13 01:02:44,124 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 01:02:44,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:02:44,124 INFO L82 PathProgramCache]: Analyzing trace with hash 1450939714, now seen corresponding path program 1 times [2021-10-13 01:02:44,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:02:44,125 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308274303] [2021-10-13 01:02:44,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:02:44,125 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:02:44,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:02:44,166 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-10-13 01:02:44,167 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:02:44,167 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308274303] [2021-10-13 01:02:44,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308274303] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:02:44,167 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:02:44,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 01:02:44,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788989009] [2021-10-13 01:02:44,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 01:02:44,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:02:44,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 01:02:44,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 01:02:44,169 INFO L87 Difference]: Start difference. First operand 385 states and 614 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:02:44,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:02:44,280 INFO L93 Difference]: Finished difference Result 766 states and 1222 transitions. [2021-10-13 01:02:44,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 01:02:44,280 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 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 107 [2021-10-13 01:02:44,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:02:44,283 INFO L225 Difference]: With dead ends: 766 [2021-10-13 01:02:44,283 INFO L226 Difference]: Without dead ends: 389 [2021-10-13 01:02:44,285 INFO L781 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 [2021-10-13 01:02:44,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2021-10-13 01:02:44,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 385. [2021-10-13 01:02:44,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 1.5833333333333333) internal successors, (608), 384 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:02:44,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 608 transitions. [2021-10-13 01:02:44,301 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 608 transitions. Word has length 107 [2021-10-13 01:02:44,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:02:44,301 INFO L470 AbstractCegarLoop]: Abstraction has 385 states and 608 transitions. [2021-10-13 01:02:44,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:02:44,302 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 608 transitions. [2021-10-13 01:02:44,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-10-13 01:02:44,304 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:02:44,304 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:02:44,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-10-13 01:02:44,304 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 01:02:44,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:02:44,305 INFO L82 PathProgramCache]: Analyzing trace with hash -1044207465, now seen corresponding path program 1 times [2021-10-13 01:02:44,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:02:44,305 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82779415] [2021-10-13 01:02:44,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:02:44,306 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:02:44,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:02:44,346 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-13 01:02:44,346 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:02:44,346 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82779415] [2021-10-13 01:02:44,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82779415] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:02:44,347 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:02:44,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 01:02:44,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073427597] [2021-10-13 01:02:44,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 01:02:44,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:02:44,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 01:02:44,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 01:02:44,349 INFO L87 Difference]: Start difference. First operand 385 states and 608 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:02:44,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:02:44,397 INFO L93 Difference]: Finished difference Result 1093 states and 1730 transitions. [2021-10-13 01:02:44,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 01:02:44,397 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 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 122 [2021-10-13 01:02:44,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:02:44,402 INFO L225 Difference]: With dead ends: 1093 [2021-10-13 01:02:44,402 INFO L226 Difference]: Without dead ends: 716 [2021-10-13 01:02:44,404 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 01:02:44,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2021-10-13 01:02:44,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 716. [2021-10-13 01:02:44,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 716 states, 715 states have (on average 1.5776223776223777) internal successors, (1128), 715 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:02:44,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 716 states to 716 states and 1128 transitions. [2021-10-13 01:02:44,436 INFO L78 Accepts]: Start accepts. Automaton has 716 states and 1128 transitions. Word has length 122 [2021-10-13 01:02:44,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:02:44,437 INFO L470 AbstractCegarLoop]: Abstraction has 716 states and 1128 transitions. [2021-10-13 01:02:44,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:02:44,437 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states and 1128 transitions. [2021-10-13 01:02:44,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-10-13 01:02:44,440 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:02:44,440 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:02:44,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-10-13 01:02:44,440 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 01:02:44,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:02:44,441 INFO L82 PathProgramCache]: Analyzing trace with hash 1005180377, now seen corresponding path program 1 times [2021-10-13 01:02:44,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:02:44,443 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196614865] [2021-10-13 01:02:44,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:02:44,444 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:02:44,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:02:44,476 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:02:44,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:02:44,584 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:02:44,586 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 01:02:44,587 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 01:02:44,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-10-13 01:02:44,596 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 01:02:44,722 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 01:02:44 BoogieIcfgContainer [2021-10-13 01:02:44,722 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 01:02:44,723 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 01:02:44,723 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 01:02:44,723 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 01:02:44,723 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:02:40" (3/4) ... [2021-10-13 01:02:44,725 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-13 01:02:44,832 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4250c1ab-db33-415a-8427-49baa6ddc02d/bin/uautomizer-WNIpwEf4Nt/witness.graphml [2021-10-13 01:02:44,832 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 01:02:44,834 INFO L168 Benchmark]: Toolchain (without parser) took 5821.78 ms. Allocated memory was 123.7 MB in the beginning and 165.7 MB in the end (delta: 41.9 MB). Free memory was 83.6 MB in the beginning and 103.5 MB in the end (delta: -19.9 MB). Peak memory consumption was 21.3 MB. Max. memory is 16.1 GB. [2021-10-13 01:02:44,834 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 123.7 MB. Free memory was 100.3 MB in the beginning and 100.2 MB in the end (delta: 68.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 01:02:44,835 INFO L168 Benchmark]: CACSL2BoogieTranslator took 437.79 ms. Allocated memory is still 123.7 MB. Free memory was 83.4 MB in the beginning and 93.6 MB in the end (delta: -10.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 01:02:44,835 INFO L168 Benchmark]: Boogie Procedure Inliner took 68.73 ms. Allocated memory is still 123.7 MB. Free memory was 93.6 MB in the beginning and 90.6 MB in the end (delta: 3.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 01:02:44,836 INFO L168 Benchmark]: Boogie Preprocessor took 61.42 ms. Allocated memory is still 123.7 MB. Free memory was 90.6 MB in the beginning and 88.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 01:02:44,836 INFO L168 Benchmark]: RCFGBuilder took 776.58 ms. Allocated memory is still 123.7 MB. Free memory was 88.5 MB in the beginning and 60.4 MB in the end (delta: 28.0 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. [2021-10-13 01:02:44,837 INFO L168 Benchmark]: TraceAbstraction took 4360.26 ms. Allocated memory was 123.7 MB in the beginning and 165.7 MB in the end (delta: 41.9 MB). Free memory was 60.0 MB in the beginning and 117.1 MB in the end (delta: -57.1 MB). Peak memory consumption was 66.4 MB. Max. memory is 16.1 GB. [2021-10-13 01:02:44,837 INFO L168 Benchmark]: Witness Printer took 109.63 ms. Allocated memory is still 165.7 MB. Free memory was 117.1 MB in the beginning and 103.5 MB in the end (delta: 13.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 01:02:44,839 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 123.7 MB. Free memory was 100.3 MB in the beginning and 100.2 MB in the end (delta: 68.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 437.79 ms. Allocated memory is still 123.7 MB. Free memory was 83.4 MB in the beginning and 93.6 MB in the end (delta: -10.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 68.73 ms. Allocated memory is still 123.7 MB. Free memory was 93.6 MB in the beginning and 90.6 MB in the end (delta: 3.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 61.42 ms. Allocated memory is still 123.7 MB. Free memory was 90.6 MB in the beginning and 88.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 776.58 ms. Allocated memory is still 123.7 MB. Free memory was 88.5 MB in the beginning and 60.4 MB in the end (delta: 28.0 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4360.26 ms. Allocated memory was 123.7 MB in the beginning and 165.7 MB in the end (delta: 41.9 MB). Free memory was 60.0 MB in the beginning and 117.1 MB in the end (delta: -57.1 MB). Peak memory consumption was 66.4 MB. Max. memory is 16.1 GB. * Witness Printer took 109.63 ms. Allocated memory is still 165.7 MB. Free memory was 117.1 MB in the beginning and 103.5 MB in the end (delta: 13.6 MB). Peak memory consumption was 12.6 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: 613]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L618] int s ; [L619] int tmp ; [L623] s = 8464 [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__hit = __VERIFIER_nondet_int() ; [L22] int s__rwstate ; [L23] int s__init_buf___0 = 1; [L24] int s__debug = __VERIFIER_nondet_int() ; [L25] int s__shutdown ; [L26] int s__cert = __VERIFIER_nondet_int() ; [L27] int s__options = __VERIFIER_nondet_int() ; [L28] int s__verify_mode = __VERIFIER_nondet_int() ; [L29] int s__session__peer = __VERIFIER_nondet_int() ; [L30] int s__cert__pkeys__AT0__privatekey = __VERIFIER_nondet_int() ; [L31] int s__ctx__info_callback = __VERIFIER_nondet_int() ; [L32] int s__ctx__stats__sess_accept_renegotiate = __VERIFIER_nondet_int() ; [L33] int s__ctx__stats__sess_accept = __VERIFIER_nondet_int() ; [L34] int s__ctx__stats__sess_accept_good = __VERIFIER_nondet_int() ; [L35] int s__s3__tmp__cert_request ; [L36] int s__s3__tmp__reuse_message = __VERIFIER_nondet_int() ; [L37] int s__s3__tmp__use_rsa_tmp ; [L38] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int() ; [L39] int s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() ; [L40] int s__s3__tmp__next_state___0 ; [L41] int s__s3__tmp__new_cipher__algo_strength = __VERIFIER_nondet_int() ; [L42] int s__session__cipher ; [L43] int buf = __VERIFIER_nondet_int() ; [L44] unsigned long l ; [L45] unsigned long Time ; [L46] unsigned long tmp = __VERIFIER_nondet_long() ; [L47] int cb ; [L48] long num1 ; [L49] int ret ; [L50] int new_state ; [L51] int state ; [L52] int skip ; [L53] int got_new_session ; [L54] int tmp___1 = __VERIFIER_nondet_int() ; [L55] int tmp___2 = __VERIFIER_nondet_int() ; [L56] int tmp___3 ; [L57] int tmp___4 ; [L58] int tmp___5 ; [L59] int tmp___6 ; [L60] int tmp___7 ; [L61] long tmp___8 = __VERIFIER_nondet_long() ; [L62] int tmp___9 ; [L63] int tmp___10 ; [L64] int blastFlag ; [L65] int __cil_tmp55 ; [L66] unsigned long __cil_tmp56 ; [L67] unsigned long __cil_tmp57 ; [L68] unsigned long __cil_tmp58 ; [L69] unsigned long __cil_tmp59 ; [L70] int __cil_tmp60 ; [L71] unsigned long __cil_tmp61 ; [L75] s__state = initial_state [L76] blastFlag = 0 [L77] Time = tmp [L78] cb = 0 [L79] ret = -1 [L80] skip = 0 [L81] got_new_session = 0 [L82] COND TRUE s__info_callback != 0 [L83] cb = s__info_callback [L89] s__in_handshake ++ [L90] COND FALSE !(tmp___1 + 12288) [L95] COND FALSE !(s__cert == 0) [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 8192) [L111] COND FALSE !(s__state == 24576) [L114] COND FALSE !(s__state == 8195) [L117] COND FALSE !(s__state == 8480) [L120] COND FALSE !(s__state == 8481) [L123] COND FALSE !(s__state == 8482) [L126] COND TRUE s__state == 8464 [L270] s__shutdown = 0 [L271] ret = __VERIFIER_nondet_int() [L272] COND TRUE blastFlag == 0 [L273] blastFlag = 1 [L275] COND FALSE !(ret <= 0) [L278] got_new_session = 1 [L279] s__state = 8496 [L280] s__init_num = 0 [L585] COND FALSE !(! s__s3__tmp__reuse_message) [L602] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 8192) [L111] COND FALSE !(s__state == 24576) [L114] COND FALSE !(s__state == 8195) [L117] COND FALSE !(s__state == 8480) [L120] COND FALSE !(s__state == 8481) [L123] COND FALSE !(s__state == 8482) [L126] COND FALSE !(s__state == 8464) [L129] COND FALSE !(s__state == 8465) [L132] COND FALSE !(s__state == 8466) [L135] COND TRUE s__state == 8496 [L284] ret = __VERIFIER_nondet_int() [L285] COND TRUE blastFlag == 1 [L286] blastFlag = 2 [L288] COND FALSE !(ret <= 0) [L291] COND TRUE \read(s__hit) [L292] s__state = 8656 [L296] s__init_num = 0 [L585] COND FALSE !(! s__s3__tmp__reuse_message) [L602] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 8192) [L111] COND FALSE !(s__state == 24576) [L114] COND FALSE !(s__state == 8195) [L117] COND FALSE !(s__state == 8480) [L120] COND FALSE !(s__state == 8481) [L123] COND FALSE !(s__state == 8482) [L126] COND FALSE !(s__state == 8464) [L129] COND FALSE !(s__state == 8465) [L132] COND FALSE !(s__state == 8466) [L135] COND FALSE !(s__state == 8496) [L138] COND FALSE !(s__state == 8497) [L141] COND FALSE !(s__state == 8512) [L144] COND FALSE !(s__state == 8513) [L147] COND FALSE !(s__state == 8528) [L150] COND FALSE !(s__state == 8529) [L153] COND FALSE !(s__state == 8544) [L156] COND FALSE !(s__state == 8545) [L159] COND FALSE !(s__state == 8560) [L162] COND FALSE !(s__state == 8561) [L165] COND FALSE !(s__state == 8448) [L168] COND FALSE !(s__state == 8576) [L171] COND FALSE !(s__state == 8577) [L174] COND FALSE !(s__state == 8592) [L177] COND FALSE !(s__state == 8593) [L180] COND FALSE !(s__state == 8608) [L183] COND FALSE !(s__state == 8609) [L186] COND FALSE !(s__state == 8640) [L189] COND FALSE !(s__state == 8641) [L192] COND TRUE s__state == 8656 [L490] s__session__cipher = s__s3__tmp__new_cipher [L491] tmp___9 = __VERIFIER_nondet_int() [L492] COND FALSE !(! tmp___9) [L496] ret = __VERIFIER_nondet_int() [L497] COND TRUE blastFlag == 2 [L498] blastFlag = 3 [L500] COND FALSE !(ret <= 0) [L503] s__state = 8672 [L504] s__init_num = 0 [L505] tmp___10 = __VERIFIER_nondet_int() [L506] COND FALSE !(! tmp___10) [L585] COND FALSE !(! s__s3__tmp__reuse_message) [L602] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 8192) [L111] COND FALSE !(s__state == 24576) [L114] COND FALSE !(s__state == 8195) [L117] COND FALSE !(s__state == 8480) [L120] COND FALSE !(s__state == 8481) [L123] COND FALSE !(s__state == 8482) [L126] COND FALSE !(s__state == 8464) [L129] COND FALSE !(s__state == 8465) [L132] COND FALSE !(s__state == 8466) [L135] COND FALSE !(s__state == 8496) [L138] COND FALSE !(s__state == 8497) [L141] COND FALSE !(s__state == 8512) [L144] COND FALSE !(s__state == 8513) [L147] COND FALSE !(s__state == 8528) [L150] COND FALSE !(s__state == 8529) [L153] COND FALSE !(s__state == 8544) [L156] COND FALSE !(s__state == 8545) [L159] COND FALSE !(s__state == 8560) [L162] COND FALSE !(s__state == 8561) [L165] COND FALSE !(s__state == 8448) [L168] COND FALSE !(s__state == 8576) [L171] COND FALSE !(s__state == 8577) [L174] COND FALSE !(s__state == 8592) [L177] COND FALSE !(s__state == 8593) [L180] COND FALSE !(s__state == 8608) [L183] COND FALSE !(s__state == 8609) [L186] COND FALSE !(s__state == 8640) [L189] COND FALSE !(s__state == 8641) [L192] COND FALSE !(s__state == 8656) [L195] COND FALSE !(s__state == 8657) [L198] COND TRUE s__state == 8672 [L513] ret = __VERIFIER_nondet_int() [L514] COND FALSE !(blastFlag == 4) [L517] COND TRUE blastFlag == 3 [L613] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 143 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4172.1ms, OverallIterations: 16, TraceHistogramMax: 4, EmptinessCheckTime: 77.5ms, AutomataDifference: 2181.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 17.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 2225 SDtfs, 2216 SDslu, 435 SDs, 0 SdLazy, 1340 SolverSat, 604 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1252.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 32.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=716occurred in iteration=15, InterpolantAutomatonStates: 45, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 341.5ms AutomataMinimizationTime, 15 MinimizatonAttempts, 52 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 88.4ms SsaConstructionTime, 303.1ms SatisfiabilityAnalysisTime, 721.1ms InterpolantComputationTime, 1472 NumberOfCodeBlocks, 1472 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 1335 ConstructedInterpolants, 0 QuantifiedInterpolants, 2476 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 15 InterpolantComputations, 15 PerfectInterpolantSequences, 736/736 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! [2021-10-13 01:02:44,887 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4250c1ab-db33-415a-8427-49baa6ddc02d/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...