./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/openssl-simplified/s3_srvr_11.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdbe8dcd-2e08-4836-8194-7fc491842145/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdbe8dcd-2e08-4836-8194-7fc491842145/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdbe8dcd-2e08-4836-8194-7fc491842145/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdbe8dcd-2e08-4836-8194-7fc491842145/bin/uautomizer-UnR33cPsHg/config/AutomizerReach.xml -i ../../sv-benchmarks/c/openssl-simplified/s3_srvr_11.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdbe8dcd-2e08-4836-8194-7fc491842145/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdbe8dcd-2e08-4836-8194-7fc491842145/bin/uautomizer-UnR33cPsHg --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 122c2109cd6c748bfe3dba05eb9f0b8ecb68be5fd41688cb81634cb3c05e5766 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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-b2eff8b [2021-10-28 09:50:59,200 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:50:59,202 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:50:59,244 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:50:59,245 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:50:59,247 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:50:59,249 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:50:59,251 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:50:59,254 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:50:59,255 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:50:59,256 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:50:59,258 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:50:59,259 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:50:59,260 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:50:59,262 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:50:59,264 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:50:59,265 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:50:59,267 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:50:59,270 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:50:59,273 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:50:59,275 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:50:59,279 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:50:59,281 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:50:59,283 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:50:59,288 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:50:59,289 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:50:59,289 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:50:59,299 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:50:59,300 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:50:59,302 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:50:59,303 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:50:59,305 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:50:59,307 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:50:59,309 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:50:59,312 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:50:59,312 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:50:59,313 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:50:59,313 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:50:59,314 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:50:59,315 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:50:59,316 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:50:59,317 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdbe8dcd-2e08-4836-8194-7fc491842145/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 09:50:59,392 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:50:59,393 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:50:59,393 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:50:59,393 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:50:59,395 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:50:59,395 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:50:59,395 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:50:59,395 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:50:59,396 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:50:59,396 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:50:59,396 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:50:59,396 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:50:59,397 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 09:50:59,397 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 09:50:59,397 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 09:50:59,397 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:50:59,398 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 09:50:59,398 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:50:59,398 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 09:50:59,398 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:50:59,399 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:50:59,399 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 09:50:59,399 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:50:59,399 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:50:59,400 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 09:50:59,400 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 09:50:59,400 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 09:50:59,400 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 09:50:59,400 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 09:50:59,401 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 09:50:59,401 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 09:50:59,401 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:50:59,401 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_fdbe8dcd-2e08-4836-8194-7fc491842145/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdbe8dcd-2e08-4836-8194-7fc491842145/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 122c2109cd6c748bfe3dba05eb9f0b8ecb68be5fd41688cb81634cb3c05e5766 [2021-10-28 09:50:59,732 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:50:59,757 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:50:59,760 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:50:59,761 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:50:59,762 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:50:59,763 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdbe8dcd-2e08-4836-8194-7fc491842145/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/openssl-simplified/s3_srvr_11.cil.c [2021-10-28 09:50:59,838 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdbe8dcd-2e08-4836-8194-7fc491842145/bin/uautomizer-UnR33cPsHg/data/fa642fb74/8e63a91555174571864a2bc235249d12/FLAG2a5b57625 [2021-10-28 09:51:00,421 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:51:00,422 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdbe8dcd-2e08-4836-8194-7fc491842145/sv-benchmarks/c/openssl-simplified/s3_srvr_11.cil.c [2021-10-28 09:51:00,451 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdbe8dcd-2e08-4836-8194-7fc491842145/bin/uautomizer-UnR33cPsHg/data/fa642fb74/8e63a91555174571864a2bc235249d12/FLAG2a5b57625 [2021-10-28 09:51:00,720 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdbe8dcd-2e08-4836-8194-7fc491842145/bin/uautomizer-UnR33cPsHg/data/fa642fb74/8e63a91555174571864a2bc235249d12 [2021-10-28 09:51:00,723 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:51:00,724 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 09:51:00,726 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:51:00,727 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:51:00,731 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:51:00,732 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:51:00" (1/1) ... [2021-10-28 09:51:00,734 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fc5855e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:51:00, skipping insertion in model container [2021-10-28 09:51:00,734 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:51:00" (1/1) ... [2021-10-28 09:51:00,743 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:51:00,791 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:51:01,073 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_fdbe8dcd-2e08-4836-8194-7fc491842145/sv-benchmarks/c/openssl-simplified/s3_srvr_11.cil.c[43646,43659] [2021-10-28 09:51:01,083 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:51:01,094 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:51:01,166 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_fdbe8dcd-2e08-4836-8194-7fc491842145/sv-benchmarks/c/openssl-simplified/s3_srvr_11.cil.c[43646,43659] [2021-10-28 09:51:01,171 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:51:01,200 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:51:01,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:51:01 WrapperNode [2021-10-28 09:51:01,200 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:51:01,201 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 09:51:01,201 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 09:51:01,202 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 09:51:01,229 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:51:01" (1/1) ... [2021-10-28 09:51:01,249 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:51:01" (1/1) ... [2021-10-28 09:51:01,336 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 09:51:01,337 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:51:01,337 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:51:01,337 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:51:01,349 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:51:01" (1/1) ... [2021-10-28 09:51:01,349 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:51:01" (1/1) ... [2021-10-28 09:51:01,354 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:51:01" (1/1) ... [2021-10-28 09:51:01,355 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:51:01" (1/1) ... [2021-10-28 09:51:01,367 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:51:01" (1/1) ... [2021-10-28 09:51:01,378 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:51:01" (1/1) ... [2021-10-28 09:51:01,382 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:51:01" (1/1) ... [2021-10-28 09:51:01,394 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:51:01,395 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:51:01,395 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:51:01,395 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:51:01,415 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:51:01" (1/1) ... [2021-10-28 09:51:01,425 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:51:01,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdbe8dcd-2e08-4836-8194-7fc491842145/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:51:01,457 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdbe8dcd-2e08-4836-8194-7fc491842145/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 09:51:01,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdbe8dcd-2e08-4836-8194-7fc491842145/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 09:51:01,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 09:51:01,515 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:51:01,515 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:51:01,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:51:01,653 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-28 09:51:02,460 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2021-10-28 09:51:02,461 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2021-10-28 09:51:02,473 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:51:02,474 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-28 09:51:02,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:51:02 BoogieIcfgContainer [2021-10-28 09:51:02,477 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:51:02,504 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 09:51:02,505 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 09:51:02,510 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 09:51:02,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:51:00" (1/3) ... [2021-10-28 09:51:02,512 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f76e3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:51:02, skipping insertion in model container [2021-10-28 09:51:02,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:51:01" (2/3) ... [2021-10-28 09:51:02,513 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f76e3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:51:02, skipping insertion in model container [2021-10-28 09:51:02,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:51:02" (3/3) ... [2021-10-28 09:51:02,515 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr_11.cil.c [2021-10-28 09:51:02,527 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 09:51:02,527 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 09:51:02,597 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 09:51:02,609 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 09:51:02,611 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-28 09:51:02,645 INFO L276 IsEmpty]: Start isEmpty. Operand has 149 states, 147 states have (on average 1.7414965986394557) internal successors, (256), 148 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:51:02,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-28 09:51:02,654 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:51:02,654 INFO L513 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] [2021-10-28 09:51:02,655 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:51:02,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:51:02,662 INFO L85 PathProgramCache]: Analyzing trace with hash -814657320, now seen corresponding path program 1 times [2021-10-28 09:51:02,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:51:02,677 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453993443] [2021-10-28 09:51:02,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:51:02,679 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:51:02,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:51:02,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:51:02,994 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:51:02,994 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453993443] [2021-10-28 09:51:02,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453993443] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:51:02,996 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:51:02,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:51:03,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732860625] [2021-10-28 09:51:03,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:51:03,022 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:51:03,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:51:03,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:51:03,051 INFO L87 Difference]: Start difference. First operand has 149 states, 147 states have (on average 1.7414965986394557) internal successors, (256), 148 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:51:03,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:51:03,423 INFO L93 Difference]: Finished difference Result 316 states and 542 transitions. [2021-10-28 09:51:03,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:51:03,425 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2021-10-28 09:51:03,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:51:03,447 INFO L225 Difference]: With dead ends: 316 [2021-10-28 09:51:03,447 INFO L226 Difference]: Without dead ends: 155 [2021-10-28 09:51:03,453 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:51:03,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-10-28 09:51:03,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 153. [2021-10-28 09:51:03,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 152 states have (on average 1.5855263157894737) internal successors, (241), 152 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:51:03,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 241 transitions. [2021-10-28 09:51:03,539 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 241 transitions. Word has length 26 [2021-10-28 09:51:03,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:51:03,540 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 241 transitions. [2021-10-28 09:51:03,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:51:03,542 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 241 transitions. [2021-10-28 09:51:03,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-28 09:51:03,545 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:51:03,545 INFO L513 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] [2021-10-28 09:51:03,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 09:51:03,546 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:51:03,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:51:03,550 INFO L85 PathProgramCache]: Analyzing trace with hash 327844106, now seen corresponding path program 1 times [2021-10-28 09:51:03,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:51:03,551 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036059955] [2021-10-28 09:51:03,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:51:03,552 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:51:03,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:51:03,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:51:03,645 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:51:03,646 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036059955] [2021-10-28 09:51:03,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036059955] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:51:03,647 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:51:03,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:51:03,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117438119] [2021-10-28 09:51:03,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:51:03,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:51:03,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:51:03,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:51:03,651 INFO L87 Difference]: Start difference. First operand 153 states and 241 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:51:03,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:51:03,828 INFO L93 Difference]: Finished difference Result 319 states and 502 transitions. [2021-10-28 09:51:03,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:51:03,829 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2021-10-28 09:51:03,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:51:03,832 INFO L225 Difference]: With dead ends: 319 [2021-10-28 09:51:03,832 INFO L226 Difference]: Without dead ends: 174 [2021-10-28 09:51:03,834 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:51:03,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2021-10-28 09:51:03,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2021-10-28 09:51:03,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 173 states have (on average 1.560693641618497) internal successors, (270), 173 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:51:03,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 270 transitions. [2021-10-28 09:51:03,851 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 270 transitions. Word has length 27 [2021-10-28 09:51:03,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:51:03,851 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 270 transitions. [2021-10-28 09:51:03,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:51:03,852 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 270 transitions. [2021-10-28 09:51:03,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-28 09:51:03,873 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:51:03,874 INFO L513 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] [2021-10-28 09:51:03,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 09:51:03,874 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:51:03,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:51:03,875 INFO L85 PathProgramCache]: Analyzing trace with hash 883966207, now seen corresponding path program 1 times [2021-10-28 09:51:03,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:51:03,876 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624742625] [2021-10-28 09:51:03,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:51:03,877 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:51:03,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:51:03,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:51:03,977 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:51:03,977 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624742625] [2021-10-28 09:51:03,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624742625] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:51:03,979 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:51:03,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:51:03,981 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586250264] [2021-10-28 09:51:03,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:51:03,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:51:03,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:51:03,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:51:03,989 INFO L87 Difference]: Start difference. First operand 174 states and 270 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:51:04,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:51:04,197 INFO L93 Difference]: Finished difference Result 348 states and 542 transitions. [2021-10-28 09:51:04,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:51:04,198 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2021-10-28 09:51:04,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:51:04,204 INFO L225 Difference]: With dead ends: 348 [2021-10-28 09:51:04,204 INFO L226 Difference]: Without dead ends: 182 [2021-10-28 09:51:04,209 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:51:04,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-10-28 09:51:04,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 180. [2021-10-28 09:51:04,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 179 states have (on average 1.5698324022346368) internal successors, (281), 179 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:51:04,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 281 transitions. [2021-10-28 09:51:04,247 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 281 transitions. Word has length 27 [2021-10-28 09:51:04,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:51:04,248 INFO L470 AbstractCegarLoop]: Abstraction has 180 states and 281 transitions. [2021-10-28 09:51:04,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:51:04,248 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 281 transitions. [2021-10-28 09:51:04,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-28 09:51:04,251 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:51:04,251 INFO L513 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] [2021-10-28 09:51:04,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 09:51:04,252 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:51:04,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:51:04,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1794489921, now seen corresponding path program 1 times [2021-10-28 09:51:04,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:51:04,254 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102049384] [2021-10-28 09:51:04,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:51:04,255 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:51:04,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:51:04,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:51:04,326 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:51:04,326 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102049384] [2021-10-28 09:51:04,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102049384] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:51:04,327 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:51:04,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:51:04,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704511394] [2021-10-28 09:51:04,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:51:04,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:51:04,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:51:04,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:51:04,330 INFO L87 Difference]: Start difference. First operand 180 states and 281 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:51:04,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:51:04,503 INFO L93 Difference]: Finished difference Result 353 states and 552 transitions. [2021-10-28 09:51:04,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:51:04,504 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2021-10-28 09:51:04,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:51:04,506 INFO L225 Difference]: With dead ends: 353 [2021-10-28 09:51:04,507 INFO L226 Difference]: Without dead ends: 181 [2021-10-28 09:51:04,508 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:51:04,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-10-28 09:51:04,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2021-10-28 09:51:04,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 180 states have (on average 1.5666666666666667) internal successors, (282), 180 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:51:04,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 282 transitions. [2021-10-28 09:51:04,521 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 282 transitions. Word has length 27 [2021-10-28 09:51:04,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:51:04,522 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 282 transitions. [2021-10-28 09:51:04,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:51:04,522 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 282 transitions. [2021-10-28 09:51:04,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-28 09:51:04,524 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:51:04,524 INFO L513 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] [2021-10-28 09:51:04,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 09:51:04,525 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:51:04,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:51:04,525 INFO L85 PathProgramCache]: Analyzing trace with hash -594155684, now seen corresponding path program 1 times [2021-10-28 09:51:04,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:51:04,526 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789799686] [2021-10-28 09:51:04,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:51:04,526 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:51:04,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:51:04,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:51:04,573 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:51:04,573 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789799686] [2021-10-28 09:51:04,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789799686] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:51:04,574 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:51:04,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:51:04,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936716379] [2021-10-28 09:51:04,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:51:04,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:51:04,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:51:04,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:51:04,577 INFO L87 Difference]: Start difference. First operand 181 states and 282 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:51:04,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:51:04,729 INFO L93 Difference]: Finished difference Result 364 states and 564 transitions. [2021-10-28 09:51:04,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:51:04,730 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2021-10-28 09:51:04,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:51:04,732 INFO L225 Difference]: With dead ends: 364 [2021-10-28 09:51:04,732 INFO L226 Difference]: Without dead ends: 191 [2021-10-28 09:51:04,733 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:51:04,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2021-10-28 09:51:04,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 181. [2021-10-28 09:51:04,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 180 states have (on average 1.5555555555555556) internal successors, (280), 180 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:51:04,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 280 transitions. [2021-10-28 09:51:04,755 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 280 transitions. Word has length 28 [2021-10-28 09:51:04,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:51:04,756 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 280 transitions. [2021-10-28 09:51:04,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:51:04,756 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 280 transitions. [2021-10-28 09:51:04,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-28 09:51:04,761 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:51:04,761 INFO L513 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] [2021-10-28 09:51:04,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-28 09:51:04,762 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:51:04,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:51:04,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1519140995, now seen corresponding path program 1 times [2021-10-28 09:51:04,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:51:04,764 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937495525] [2021-10-28 09:51:04,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:51:04,764 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:51:04,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:51:04,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:51:04,855 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:51:04,856 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937495525] [2021-10-28 09:51:04,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937495525] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:51:04,856 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:51:04,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:51:04,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886217257] [2021-10-28 09:51:04,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:51:04,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:51:04,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:51:04,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:51:04,863 INFO L87 Difference]: Start difference. First operand 181 states and 280 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:51:04,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:51:04,999 INFO L93 Difference]: Finished difference Result 364 states and 560 transitions. [2021-10-28 09:51:05,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:51:05,004 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 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 29 [2021-10-28 09:51:05,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:51:05,006 INFO L225 Difference]: With dead ends: 364 [2021-10-28 09:51:05,006 INFO L226 Difference]: Without dead ends: 191 [2021-10-28 09:51:05,007 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:51:05,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2021-10-28 09:51:05,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 181. [2021-10-28 09:51:05,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 180 states have (on average 1.5444444444444445) internal successors, (278), 180 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) [2021-10-28 09:51:05,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 278 transitions. [2021-10-28 09:51:05,020 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 278 transitions. Word has length 29 [2021-10-28 09:51:05,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:51:05,020 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 278 transitions. [2021-10-28 09:51:05,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:51:05,021 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 278 transitions. [2021-10-28 09:51:05,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-28 09:51:05,025 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:51:05,026 INFO L513 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] [2021-10-28 09:51:05,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-28 09:51:05,026 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:51:05,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:51:05,027 INFO L85 PathProgramCache]: Analyzing trace with hash -1615530751, now seen corresponding path program 1 times [2021-10-28 09:51:05,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:51:05,033 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124514246] [2021-10-28 09:51:05,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:51:05,034 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:51:05,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:51:05,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:51:05,101 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:51:05,101 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124514246] [2021-10-28 09:51:05,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124514246] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:51:05,102 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:51:05,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:51:05,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496857121] [2021-10-28 09:51:05,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:51:05,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:51:05,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:51:05,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:51:05,105 INFO L87 Difference]: Start difference. First operand 181 states and 278 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:51:05,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:51:05,226 INFO L93 Difference]: Finished difference Result 364 states and 556 transitions. [2021-10-28 09:51:05,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:51:05,227 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2021-10-28 09:51:05,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:51:05,229 INFO L225 Difference]: With dead ends: 364 [2021-10-28 09:51:05,229 INFO L226 Difference]: Without dead ends: 191 [2021-10-28 09:51:05,230 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:51:05,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2021-10-28 09:51:05,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 181. [2021-10-28 09:51:05,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 180 states have (on average 1.5333333333333334) internal successors, (276), 180 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:51:05,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 276 transitions. [2021-10-28 09:51:05,246 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 276 transitions. Word has length 30 [2021-10-28 09:51:05,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:51:05,248 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 276 transitions. [2021-10-28 09:51:05,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:51:05,249 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 276 transitions. [2021-10-28 09:51:05,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-28 09:51:05,250 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:51:05,250 INFO L513 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] [2021-10-28 09:51:05,250 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-28 09:51:05,251 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:51:05,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:51:05,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1189847454, now seen corresponding path program 1 times [2021-10-28 09:51:05,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:51:05,254 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348114429] [2021-10-28 09:51:05,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:51:05,254 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:51:05,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:51:05,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:51:05,341 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:51:05,341 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348114429] [2021-10-28 09:51:05,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348114429] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:51:05,341 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:51:05,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 09:51:05,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141466487] [2021-10-28 09:51:05,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:51:05,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:51:05,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:51:05,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:51:05,344 INFO L87 Difference]: Start difference. First operand 181 states and 276 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:51:05,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:51:05,610 INFO L93 Difference]: Finished difference Result 512 states and 779 transitions. [2021-10-28 09:51:05,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 09:51:05,611 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2021-10-28 09:51:05,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:51:05,614 INFO L225 Difference]: With dead ends: 512 [2021-10-28 09:51:05,614 INFO L226 Difference]: Without dead ends: 339 [2021-10-28 09:51:05,615 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:51:05,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2021-10-28 09:51:05,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 324. [2021-10-28 09:51:05,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 323 states have (on average 1.5325077399380804) internal successors, (495), 323 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:51:05,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 495 transitions. [2021-10-28 09:51:05,645 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 495 transitions. Word has length 30 [2021-10-28 09:51:05,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:51:05,646 INFO L470 AbstractCegarLoop]: Abstraction has 324 states and 495 transitions. [2021-10-28 09:51:05,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:51:05,646 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 495 transitions. [2021-10-28 09:51:05,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-10-28 09:51:05,648 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:51:05,649 INFO L513 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] [2021-10-28 09:51:05,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-28 09:51:05,649 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:51:05,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:51:05,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1632006041, now seen corresponding path program 1 times [2021-10-28 09:51:05,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:51:05,651 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322149810] [2021-10-28 09:51:05,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:51:05,651 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:51:05,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:51:05,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:51:05,737 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:51:05,737 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322149810] [2021-10-28 09:51:05,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322149810] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:51:05,738 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:51:05,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:51:05,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439067322] [2021-10-28 09:51:05,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:51:05,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:51:05,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:51:05,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:51:05,749 INFO L87 Difference]: Start difference. First operand 324 states and 495 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:51:05,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:51:05,935 INFO L93 Difference]: Finished difference Result 699 states and 1075 transitions. [2021-10-28 09:51:05,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:51:05,936 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-10-28 09:51:05,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:51:05,939 INFO L225 Difference]: With dead ends: 699 [2021-10-28 09:51:05,941 INFO L226 Difference]: Without dead ends: 383 [2021-10-28 09:51:05,942 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:51:05,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2021-10-28 09:51:05,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 375. [2021-10-28 09:51:05,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 374 states have (on average 1.5561497326203209) internal successors, (582), 374 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:51:05,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 582 transitions. [2021-10-28 09:51:05,967 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 582 transitions. Word has length 44 [2021-10-28 09:51:05,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:51:05,971 INFO L470 AbstractCegarLoop]: Abstraction has 375 states and 582 transitions. [2021-10-28 09:51:05,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:51:05,972 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 582 transitions. [2021-10-28 09:51:05,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-10-28 09:51:05,973 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:51:05,973 INFO L513 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] [2021-10-28 09:51:05,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-28 09:51:05,974 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:51:05,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:51:05,975 INFO L85 PathProgramCache]: Analyzing trace with hash -954576389, now seen corresponding path program 1 times [2021-10-28 09:51:05,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:51:05,977 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546892824] [2021-10-28 09:51:05,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:51:05,977 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:51:05,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:51:06,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:51:06,034 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:51:06,034 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546892824] [2021-10-28 09:51:06,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546892824] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:51:06,034 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:51:06,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:51:06,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765904827] [2021-10-28 09:51:06,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:51:06,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:51:06,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:51:06,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:51:06,037 INFO L87 Difference]: Start difference. First operand 375 states and 582 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:51:06,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:51:06,234 INFO L93 Difference]: Finished difference Result 776 states and 1211 transitions. [2021-10-28 09:51:06,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:51:06,234 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 [2021-10-28 09:51:06,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:51:06,238 INFO L225 Difference]: With dead ends: 776 [2021-10-28 09:51:06,238 INFO L226 Difference]: Without dead ends: 407 [2021-10-28 09:51:06,239 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:51:06,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2021-10-28 09:51:06,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 399. [2021-10-28 09:51:06,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 398 states have (on average 1.5778894472361809) internal successors, (628), 398 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:51:06,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 628 transitions. [2021-10-28 09:51:06,280 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 628 transitions. Word has length 45 [2021-10-28 09:51:06,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:51:06,280 INFO L470 AbstractCegarLoop]: Abstraction has 399 states and 628 transitions. [2021-10-28 09:51:06,280 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) [2021-10-28 09:51:06,281 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 628 transitions. [2021-10-28 09:51:06,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-10-28 09:51:06,282 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:51:06,282 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:51:06,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-28 09:51:06,283 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:51:06,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:51:06,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1426018212, now seen corresponding path program 1 times [2021-10-28 09:51:06,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:51:06,287 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588474776] [2021-10-28 09:51:06,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:51:06,287 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:51:06,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:51:06,339 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-28 09:51:06,339 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:51:06,339 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588474776] [2021-10-28 09:51:06,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588474776] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:51:06,340 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:51:06,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:51:06,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856221361] [2021-10-28 09:51:06,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:51:06,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:51:06,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:51:06,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:51:06,343 INFO L87 Difference]: Start difference. First operand 399 states and 628 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:51:06,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:51:06,520 INFO L93 Difference]: Finished difference Result 830 states and 1311 transitions. [2021-10-28 09:51:06,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:51:06,521 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-10-28 09:51:06,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:51:06,525 INFO L225 Difference]: With dead ends: 830 [2021-10-28 09:51:06,525 INFO L226 Difference]: Without dead ends: 439 [2021-10-28 09:51:06,526 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:51:06,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2021-10-28 09:51:06,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 439. [2021-10-28 09:51:06,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 439 states, 438 states have (on average 1.582191780821918) internal successors, (693), 438 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:51:06,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 693 transitions. [2021-10-28 09:51:06,553 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 693 transitions. Word has length 55 [2021-10-28 09:51:06,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:51:06,554 INFO L470 AbstractCegarLoop]: Abstraction has 439 states and 693 transitions. [2021-10-28 09:51:06,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:51:06,554 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 693 transitions. [2021-10-28 09:51:06,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-10-28 09:51:06,556 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:51:06,556 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:51:06,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-28 09:51:06,557 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:51:06,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:51:06,558 INFO L85 PathProgramCache]: Analyzing trace with hash 961137590, now seen corresponding path program 1 times [2021-10-28 09:51:06,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:51:06,558 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021247267] [2021-10-28 09:51:06,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:51:06,558 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:51:06,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:51:06,603 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-28 09:51:06,603 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:51:06,604 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021247267] [2021-10-28 09:51:06,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021247267] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:51:06,604 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:51:06,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:51:06,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080331637] [2021-10-28 09:51:06,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:51:06,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:51:06,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:51:06,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:51:06,606 INFO L87 Difference]: Start difference. First operand 439 states and 693 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:51:06,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:51:06,778 INFO L93 Difference]: Finished difference Result 912 states and 1441 transitions. [2021-10-28 09:51:06,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:51:06,781 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 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 82 [2021-10-28 09:51:06,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:51:06,785 INFO L225 Difference]: With dead ends: 912 [2021-10-28 09:51:06,785 INFO L226 Difference]: Without dead ends: 481 [2021-10-28 09:51:06,786 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:51:06,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2021-10-28 09:51:06,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 477. [2021-10-28 09:51:06,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 477 states, 476 states have (on average 1.5819327731092436) internal successors, (753), 476 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:51:06,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 753 transitions. [2021-10-28 09:51:06,827 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 753 transitions. Word has length 82 [2021-10-28 09:51:06,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:51:06,828 INFO L470 AbstractCegarLoop]: Abstraction has 477 states and 753 transitions. [2021-10-28 09:51:06,828 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:51:06,828 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 753 transitions. [2021-10-28 09:51:06,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-10-28 09:51:06,830 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:51:06,830 INFO L513 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] [2021-10-28 09:51:06,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-28 09:51:06,831 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:51:06,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:51:06,832 INFO L85 PathProgramCache]: Analyzing trace with hash -986689731, now seen corresponding path program 1 times [2021-10-28 09:51:06,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:51:06,832 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693620607] [2021-10-28 09:51:06,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:51:06,833 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:51:06,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:51:06,872 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-28 09:51:06,873 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:51:06,873 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693620607] [2021-10-28 09:51:06,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693620607] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:51:06,874 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:51:06,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:51:06,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030979594] [2021-10-28 09:51:06,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:51:06,875 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:51:06,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:51:06,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:51:06,876 INFO L87 Difference]: Start difference. First operand 477 states and 753 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) [2021-10-28 09:51:07,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:51:07,051 INFO L93 Difference]: Finished difference Result 950 states and 1498 transitions. [2021-10-28 09:51:07,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:51:07,051 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 83 [2021-10-28 09:51:07,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:51:07,056 INFO L225 Difference]: With dead ends: 950 [2021-10-28 09:51:07,056 INFO L226 Difference]: Without dead ends: 481 [2021-10-28 09:51:07,058 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:51:07,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2021-10-28 09:51:07,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 477. [2021-10-28 09:51:07,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 477 states, 476 states have (on average 1.5756302521008403) internal successors, (750), 476 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:51:07,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 750 transitions. [2021-10-28 09:51:07,092 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 750 transitions. Word has length 83 [2021-10-28 09:51:07,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:51:07,093 INFO L470 AbstractCegarLoop]: Abstraction has 477 states and 750 transitions. [2021-10-28 09:51:07,093 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) [2021-10-28 09:51:07,094 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 750 transitions. [2021-10-28 09:51:07,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-10-28 09:51:07,095 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:51:07,096 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:51:07,096 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-28 09:51:07,096 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:51:07,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:51:07,097 INFO L85 PathProgramCache]: Analyzing trace with hash -1836560986, now seen corresponding path program 1 times [2021-10-28 09:51:07,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:51:07,097 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475636635] [2021-10-28 09:51:07,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:51:07,098 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:51:07,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:51:07,171 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-28 09:51:07,172 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:51:07,172 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475636635] [2021-10-28 09:51:07,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475636635] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:51:07,173 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:51:07,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:51:07,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907174490] [2021-10-28 09:51:07,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:51:07,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:51:07,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:51:07,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:51:07,176 INFO L87 Difference]: Start difference. First operand 477 states and 750 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) [2021-10-28 09:51:07,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:51:07,385 INFO L93 Difference]: Finished difference Result 998 states and 1573 transitions. [2021-10-28 09:51:07,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:51:07,386 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 84 [2021-10-28 09:51:07,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:51:07,390 INFO L225 Difference]: With dead ends: 998 [2021-10-28 09:51:07,390 INFO L226 Difference]: Without dead ends: 529 [2021-10-28 09:51:07,391 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:51:07,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2021-10-28 09:51:07,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 513. [2021-10-28 09:51:07,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 513 states, 512 states have (on average 1.572265625) internal successors, (805), 512 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:51:07,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 805 transitions. [2021-10-28 09:51:07,425 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 805 transitions. Word has length 84 [2021-10-28 09:51:07,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:51:07,426 INFO L470 AbstractCegarLoop]: Abstraction has 513 states and 805 transitions. [2021-10-28 09:51:07,426 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) [2021-10-28 09:51:07,426 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 805 transitions. [2021-10-28 09:51:07,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-10-28 09:51:07,428 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:51:07,428 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:51:07,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-10-28 09:51:07,429 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:51:07,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:51:07,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1112959693, now seen corresponding path program 1 times [2021-10-28 09:51:07,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:51:07,430 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822171031] [2021-10-28 09:51:07,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:51:07,430 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:51:07,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:51:07,465 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-28 09:51:07,465 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:51:07,465 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822171031] [2021-10-28 09:51:07,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822171031] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:51:07,466 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:51:07,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:51:07,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848160726] [2021-10-28 09:51:07,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:51:07,467 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:51:07,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:51:07,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:51:07,468 INFO L87 Difference]: Start difference. First operand 513 states and 805 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) [2021-10-28 09:51:07,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:51:07,643 INFO L93 Difference]: Finished difference Result 1034 states and 1624 transitions. [2021-10-28 09:51:07,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:51:07,644 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 85 [2021-10-28 09:51:07,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:51:07,648 INFO L225 Difference]: With dead ends: 1034 [2021-10-28 09:51:07,648 INFO L226 Difference]: Without dead ends: 529 [2021-10-28 09:51:07,652 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:51:07,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2021-10-28 09:51:07,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 513. [2021-10-28 09:51:07,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 513 states, 512 states have (on average 1.564453125) internal successors, (801), 512 states have internal predecessors, (801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:51:07,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 801 transitions. [2021-10-28 09:51:07,683 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 801 transitions. Word has length 85 [2021-10-28 09:51:07,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:51:07,684 INFO L470 AbstractCegarLoop]: Abstraction has 513 states and 801 transitions. [2021-10-28 09:51:07,684 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) [2021-10-28 09:51:07,684 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 801 transitions. [2021-10-28 09:51:07,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-10-28 09:51:07,686 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:51:07,686 INFO L513 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] [2021-10-28 09:51:07,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-10-28 09:51:07,687 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:51:07,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:51:07,687 INFO L85 PathProgramCache]: Analyzing trace with hash 167103299, now seen corresponding path program 1 times [2021-10-28 09:51:07,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:51:07,690 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754288112] [2021-10-28 09:51:07,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:51:07,691 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:51:07,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:51:07,750 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:51:07,750 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:51:07,751 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754288112] [2021-10-28 09:51:07,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754288112] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:51:07,754 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:51:07,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:51:07,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527847930] [2021-10-28 09:51:07,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:51:07,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:51:07,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:51:07,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:51:07,756 INFO L87 Difference]: Start difference. First operand 513 states and 801 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) [2021-10-28 09:51:07,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:51:07,966 INFO L93 Difference]: Finished difference Result 1079 states and 1683 transitions. [2021-10-28 09:51:07,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:51:07,967 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 [2021-10-28 09:51:07,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:51:07,972 INFO L225 Difference]: With dead ends: 1079 [2021-10-28 09:51:07,972 INFO L226 Difference]: Without dead ends: 574 [2021-10-28 09:51:07,974 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:51:07,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2021-10-28 09:51:08,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 566. [2021-10-28 09:51:08,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 565 states have (on average 1.5610619469026548) internal successors, (882), 565 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:51:08,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 882 transitions. [2021-10-28 09:51:08,014 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 882 transitions. Word has length 85 [2021-10-28 09:51:08,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:51:08,014 INFO L470 AbstractCegarLoop]: Abstraction has 566 states and 882 transitions. [2021-10-28 09:51:08,014 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) [2021-10-28 09:51:08,015 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 882 transitions. [2021-10-28 09:51:08,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-10-28 09:51:08,016 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:51:08,017 INFO L513 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] [2021-10-28 09:51:08,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-10-28 09:51:08,017 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:51:08,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:51:08,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1767051647, now seen corresponding path program 1 times [2021-10-28 09:51:08,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:51:08,019 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664087386] [2021-10-28 09:51:08,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:51:08,019 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:51:08,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:51:08,058 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:51:08,058 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:51:08,059 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664087386] [2021-10-28 09:51:08,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664087386] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:51:08,059 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:51:08,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:51:08,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687546780] [2021-10-28 09:51:08,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:51:08,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:51:08,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:51:08,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:51:08,061 INFO L87 Difference]: Start difference. First operand 566 states and 882 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) [2021-10-28 09:51:08,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:51:08,267 INFO L93 Difference]: Finished difference Result 1132 states and 1762 transitions. [2021-10-28 09:51:08,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:51:08,268 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 [2021-10-28 09:51:08,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:51:08,272 INFO L225 Difference]: With dead ends: 1132 [2021-10-28 09:51:08,272 INFO L226 Difference]: Without dead ends: 572 [2021-10-28 09:51:08,277 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:51:08,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2021-10-28 09:51:08,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 564. [2021-10-28 09:51:08,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 563 states have (on average 1.5577264653641207) internal successors, (877), 563 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:51:08,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 877 transitions. [2021-10-28 09:51:08,320 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 877 transitions. Word has length 86 [2021-10-28 09:51:08,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:51:08,321 INFO L470 AbstractCegarLoop]: Abstraction has 564 states and 877 transitions. [2021-10-28 09:51:08,321 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) [2021-10-28 09:51:08,321 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 877 transitions. [2021-10-28 09:51:08,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-10-28 09:51:08,323 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:51:08,324 INFO L513 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, 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] [2021-10-28 09:51:08,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-10-28 09:51:08,324 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:51:08,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:51:08,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1128064849, now seen corresponding path program 1 times [2021-10-28 09:51:08,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:51:08,325 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149528717] [2021-10-28 09:51:08,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:51:08,326 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:51:08,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:51:08,368 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-10-28 09:51:08,369 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:51:08,369 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149528717] [2021-10-28 09:51:08,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149528717] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:51:08,369 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:51:08,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:51:08,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026808350] [2021-10-28 09:51:08,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:51:08,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:51:08,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:51:08,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:51:08,373 INFO L87 Difference]: Start difference. First operand 564 states and 877 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) [2021-10-28 09:51:08,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:51:08,530 INFO L93 Difference]: Finished difference Result 1160 states and 1805 transitions. [2021-10-28 09:51:08,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:51:08,530 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 107 [2021-10-28 09:51:08,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:51:08,535 INFO L225 Difference]: With dead ends: 1160 [2021-10-28 09:51:08,535 INFO L226 Difference]: Without dead ends: 604 [2021-10-28 09:51:08,537 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:51:08,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2021-10-28 09:51:08,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 594. [2021-10-28 09:51:08,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 594 states, 593 states have (on average 1.548060708263069) internal successors, (918), 593 states have internal predecessors, (918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:51:08,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 918 transitions. [2021-10-28 09:51:08,570 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 918 transitions. Word has length 107 [2021-10-28 09:51:08,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:51:08,570 INFO L470 AbstractCegarLoop]: Abstraction has 594 states and 918 transitions. [2021-10-28 09:51:08,571 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) [2021-10-28 09:51:08,571 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 918 transitions. [2021-10-28 09:51:08,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-10-28 09:51:08,573 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:51:08,573 INFO L513 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, 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] [2021-10-28 09:51:08,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-10-28 09:51:08,574 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:51:08,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:51:08,574 INFO L85 PathProgramCache]: Analyzing trace with hash 56241544, now seen corresponding path program 1 times [2021-10-28 09:51:08,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:51:08,575 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544706559] [2021-10-28 09:51:08,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:51:08,575 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:51:08,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:51:08,611 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-10-28 09:51:08,611 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:51:08,612 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544706559] [2021-10-28 09:51:08,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544706559] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:51:08,612 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:51:08,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:51:08,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314255046] [2021-10-28 09:51:08,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:51:08,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:51:08,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:51:08,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:51:08,616 INFO L87 Difference]: Start difference. First operand 594 states and 918 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) [2021-10-28 09:51:08,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:51:08,773 INFO L93 Difference]: Finished difference Result 1190 states and 1840 transitions. [2021-10-28 09:51:08,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:51:08,774 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 108 [2021-10-28 09:51:08,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:51:08,778 INFO L225 Difference]: With dead ends: 1190 [2021-10-28 09:51:08,779 INFO L226 Difference]: Without dead ends: 604 [2021-10-28 09:51:08,780 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:51:08,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2021-10-28 09:51:08,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 594. [2021-10-28 09:51:08,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 594 states, 593 states have (on average 1.5379426644182124) internal successors, (912), 593 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:51:08,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 912 transitions. [2021-10-28 09:51:08,814 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 912 transitions. Word has length 108 [2021-10-28 09:51:08,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:51:08,815 INFO L470 AbstractCegarLoop]: Abstraction has 594 states and 912 transitions. [2021-10-28 09:51:08,815 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) [2021-10-28 09:51:08,815 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 912 transitions. [2021-10-28 09:51:08,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-10-28 09:51:08,818 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:51:08,818 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:51:08,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-10-28 09:51:08,818 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:51:08,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:51:08,819 INFO L85 PathProgramCache]: Analyzing trace with hash -296831400, now seen corresponding path program 1 times [2021-10-28 09:51:08,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:51:08,819 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929333933] [2021-10-28 09:51:08,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:51:08,820 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:51:08,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:51:08,876 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2021-10-28 09:51:08,876 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:51:08,876 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929333933] [2021-10-28 09:51:08,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929333933] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:51:08,877 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:51:08,877 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:51:08,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727466935] [2021-10-28 09:51:08,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:51:08,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:51:08,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:51:08,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:51:08,879 INFO L87 Difference]: Start difference. First operand 594 states and 912 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) [2021-10-28 09:51:09,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:51:09,036 INFO L93 Difference]: Finished difference Result 1240 states and 1907 transitions. [2021-10-28 09:51:09,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:51:09,036 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 111 [2021-10-28 09:51:09,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:51:09,041 INFO L225 Difference]: With dead ends: 1240 [2021-10-28 09:51:09,042 INFO L226 Difference]: Without dead ends: 654 [2021-10-28 09:51:09,044 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:51:09,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 654 states. [2021-10-28 09:51:09,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 654 to 628. [2021-10-28 09:51:09,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 628 states, 627 states have (on average 1.529505582137161) internal successors, (959), 627 states have internal predecessors, (959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:51:09,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 959 transitions. [2021-10-28 09:51:09,091 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 959 transitions. Word has length 111 [2021-10-28 09:51:09,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:51:09,091 INFO L470 AbstractCegarLoop]: Abstraction has 628 states and 959 transitions. [2021-10-28 09:51:09,092 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) [2021-10-28 09:51:09,092 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 959 transitions. [2021-10-28 09:51:09,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-10-28 09:51:09,094 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:51:09,095 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:51:09,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-10-28 09:51:09,095 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:51:09,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:51:09,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1499138703, now seen corresponding path program 1 times [2021-10-28 09:51:09,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:51:09,096 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082590690] [2021-10-28 09:51:09,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:51:09,097 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:51:09,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:51:09,145 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2021-10-28 09:51:09,145 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:51:09,146 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082590690] [2021-10-28 09:51:09,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082590690] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:51:09,146 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:51:09,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:51:09,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554985092] [2021-10-28 09:51:09,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:51:09,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:51:09,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:51:09,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:51:09,150 INFO L87 Difference]: Start difference. First operand 628 states and 959 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:51:09,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:51:09,314 INFO L93 Difference]: Finished difference Result 1274 states and 1948 transitions. [2021-10-28 09:51:09,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:51:09,315 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-10-28 09:51:09,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:51:09,320 INFO L225 Difference]: With dead ends: 1274 [2021-10-28 09:51:09,321 INFO L226 Difference]: Without dead ends: 654 [2021-10-28 09:51:09,322 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:51:09,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 654 states. [2021-10-28 09:51:09,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 654 to 628. [2021-10-28 09:51:09,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 628 states, 627 states have (on average 1.5199362041467304) internal successors, (953), 627 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:51:09,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 953 transitions. [2021-10-28 09:51:09,367 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 953 transitions. Word has length 112 [2021-10-28 09:51:09,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:51:09,368 INFO L470 AbstractCegarLoop]: Abstraction has 628 states and 953 transitions. [2021-10-28 09:51:09,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:51:09,368 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 953 transitions. [2021-10-28 09:51:09,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-10-28 09:51:09,371 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:51:09,371 INFO L513 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, 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] [2021-10-28 09:51:09,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-10-28 09:51:09,372 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:51:09,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:51:09,372 INFO L85 PathProgramCache]: Analyzing trace with hash 657079250, now seen corresponding path program 1 times [2021-10-28 09:51:09,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:51:09,373 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251472829] [2021-10-28 09:51:09,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:51:09,373 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:51:09,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:51:09,426 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-10-28 09:51:09,426 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:51:09,426 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251472829] [2021-10-28 09:51:09,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251472829] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:51:09,427 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:51:09,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:51:09,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307214306] [2021-10-28 09:51:09,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:51:09,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:51:09,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:51:09,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:51:09,429 INFO L87 Difference]: Start difference. First operand 628 states and 953 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:51:09,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:51:09,609 INFO L93 Difference]: Finished difference Result 1301 states and 1973 transitions. [2021-10-28 09:51:09,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:51:09,610 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 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 123 [2021-10-28 09:51:09,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:51:09,615 INFO L225 Difference]: With dead ends: 1301 [2021-10-28 09:51:09,615 INFO L226 Difference]: Without dead ends: 681 [2021-10-28 09:51:09,617 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:51:09,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 681 states. [2021-10-28 09:51:09,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 681 to 675. [2021-10-28 09:51:09,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 675 states, 674 states have (on average 1.5148367952522255) internal successors, (1021), 674 states have internal predecessors, (1021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:51:09,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 1021 transitions. [2021-10-28 09:51:09,671 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 1021 transitions. Word has length 123 [2021-10-28 09:51:09,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:51:09,671 INFO L470 AbstractCegarLoop]: Abstraction has 675 states and 1021 transitions. [2021-10-28 09:51:09,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:51:09,672 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 1021 transitions. [2021-10-28 09:51:09,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-10-28 09:51:09,674 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:51:09,674 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-28 09:51:09,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-10-28 09:51:09,675 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:51:09,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:51:09,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1371731480, now seen corresponding path program 1 times [2021-10-28 09:51:09,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:51:09,676 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121710667] [2021-10-28 09:51:09,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:51:09,676 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:51:09,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:51:09,740 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-10-28 09:51:09,741 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:51:09,741 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121710667] [2021-10-28 09:51:09,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121710667] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:51:09,741 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:51:09,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:51:09,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002033563] [2021-10-28 09:51:09,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:51:09,744 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:51:09,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:51:09,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:51:09,746 INFO L87 Difference]: Start difference. First operand 675 states and 1021 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:51:09,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:51:09,824 INFO L93 Difference]: Finished difference Result 1344 states and 2031 transitions. [2021-10-28 09:51:09,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:51:09,825 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 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 124 [2021-10-28 09:51:09,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:51:09,835 INFO L225 Difference]: With dead ends: 1344 [2021-10-28 09:51:09,835 INFO L226 Difference]: Without dead ends: 1342 [2021-10-28 09:51:09,836 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:51:09,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1342 states. [2021-10-28 09:51:09,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1342 to 1340. [2021-10-28 09:51:09,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1340 states, 1339 states have (on average 1.513816280806572) internal successors, (2027), 1339 states have internal predecessors, (2027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:51:09,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1340 states to 1340 states and 2027 transitions. [2021-10-28 09:51:09,920 INFO L78 Accepts]: Start accepts. Automaton has 1340 states and 2027 transitions. Word has length 124 [2021-10-28 09:51:09,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:51:09,920 INFO L470 AbstractCegarLoop]: Abstraction has 1340 states and 2027 transitions. [2021-10-28 09:51:09,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:51:09,921 INFO L276 IsEmpty]: Start isEmpty. Operand 1340 states and 2027 transitions. [2021-10-28 09:51:09,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-10-28 09:51:09,924 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:51:09,924 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-28 09:51:09,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-10-28 09:51:09,925 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:51:09,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:51:09,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1920674126, now seen corresponding path program 1 times [2021-10-28 09:51:09,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:51:09,926 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015695637] [2021-10-28 09:51:09,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:51:09,927 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:51:09,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:51:09,974 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-10-28 09:51:09,974 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:51:09,974 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015695637] [2021-10-28 09:51:09,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015695637] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:51:09,975 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:51:09,975 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:51:09,975 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527710176] [2021-10-28 09:51:09,976 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:51:09,976 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:51:09,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:51:09,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:51:09,977 INFO L87 Difference]: Start difference. First operand 1340 states and 2027 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:51:10,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:51:10,103 INFO L93 Difference]: Finished difference Result 3329 states and 5035 transitions. [2021-10-28 09:51:10,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:51:10,103 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-10-28 09:51:10,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:51:10,117 INFO L225 Difference]: With dead ends: 3329 [2021-10-28 09:51:10,117 INFO L226 Difference]: Without dead ends: 1997 [2021-10-28 09:51:10,120 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:51:10,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1997 states. [2021-10-28 09:51:10,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1997 to 1995. [2021-10-28 09:51:10,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1995 states, 1994 states have (on average 1.5110330992978938) internal successors, (3013), 1994 states have internal predecessors, (3013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:51:10,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1995 states to 1995 states and 3013 transitions. [2021-10-28 09:51:10,240 INFO L78 Accepts]: Start accepts. Automaton has 1995 states and 3013 transitions. Word has length 125 [2021-10-28 09:51:10,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:51:10,241 INFO L470 AbstractCegarLoop]: Abstraction has 1995 states and 3013 transitions. [2021-10-28 09:51:10,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:51:10,241 INFO L276 IsEmpty]: Start isEmpty. Operand 1995 states and 3013 transitions. [2021-10-28 09:51:10,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-10-28 09:51:10,245 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:51:10,246 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-28 09:51:10,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-10-28 09:51:10,246 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:51:10,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:51:10,247 INFO L85 PathProgramCache]: Analyzing trace with hash 232432692, now seen corresponding path program 1 times [2021-10-28 09:51:10,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:51:10,247 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351466348] [2021-10-28 09:51:10,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:51:10,248 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:51:10,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:51:10,303 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-10-28 09:51:10,304 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:51:10,304 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351466348] [2021-10-28 09:51:10,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351466348] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:51:10,304 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:51:10,304 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:51:10,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640393219] [2021-10-28 09:51:10,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:51:10,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:51:10,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:51:10,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:51:10,306 INFO L87 Difference]: Start difference. First operand 1995 states and 3013 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) [2021-10-28 09:51:10,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:51:10,451 INFO L93 Difference]: Finished difference Result 4617 states and 6972 transitions. [2021-10-28 09:51:10,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:51:10,452 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 125 [2021-10-28 09:51:10,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:51:10,471 INFO L225 Difference]: With dead ends: 4617 [2021-10-28 09:51:10,471 INFO L226 Difference]: Without dead ends: 2630 [2021-10-28 09:51:10,475 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:51:10,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2630 states. [2021-10-28 09:51:10,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2630 to 2628. [2021-10-28 09:51:10,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2628 states, 2627 states have (on average 1.5081842405786068) internal successors, (3962), 2627 states have internal predecessors, (3962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:51:10,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2628 states to 2628 states and 3962 transitions. [2021-10-28 09:51:10,669 INFO L78 Accepts]: Start accepts. Automaton has 2628 states and 3962 transitions. Word has length 125 [2021-10-28 09:51:10,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:51:10,670 INFO L470 AbstractCegarLoop]: Abstraction has 2628 states and 3962 transitions. [2021-10-28 09:51:10,671 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) [2021-10-28 09:51:10,671 INFO L276 IsEmpty]: Start isEmpty. Operand 2628 states and 3962 transitions. [2021-10-28 09:51:10,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-10-28 09:51:10,676 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:51:10,677 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:51:10,677 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-10-28 09:51:10,677 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:51:10,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:51:10,678 INFO L85 PathProgramCache]: Analyzing trace with hash 357624272, now seen corresponding path program 1 times [2021-10-28 09:51:10,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:51:10,678 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426344552] [2021-10-28 09:51:10,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:51:10,679 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:51:10,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:51:10,725 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-10-28 09:51:10,725 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:51:10,725 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426344552] [2021-10-28 09:51:10,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426344552] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:51:10,726 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:51:10,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:51:10,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695167526] [2021-10-28 09:51:10,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:51:10,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:51:10,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:51:10,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:51:10,728 INFO L87 Difference]: Start difference. First operand 2628 states and 3962 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:51:10,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:51:10,983 INFO L93 Difference]: Finished difference Result 5376 states and 8099 transitions. [2021-10-28 09:51:10,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:51:10,984 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 133 [2021-10-28 09:51:10,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:51:11,004 INFO L225 Difference]: With dead ends: 5376 [2021-10-28 09:51:11,004 INFO L226 Difference]: Without dead ends: 2756 [2021-10-28 09:51:11,009 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:51:11,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2756 states. [2021-10-28 09:51:11,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2756 to 2724. [2021-10-28 09:51:11,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2724 states, 2723 states have (on average 1.4972456849063533) internal successors, (4077), 2723 states have internal predecessors, (4077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:51:11,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2724 states to 2724 states and 4077 transitions. [2021-10-28 09:51:11,187 INFO L78 Accepts]: Start accepts. Automaton has 2724 states and 4077 transitions. Word has length 133 [2021-10-28 09:51:11,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:51:11,187 INFO L470 AbstractCegarLoop]: Abstraction has 2724 states and 4077 transitions. [2021-10-28 09:51:11,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:51:11,188 INFO L276 IsEmpty]: Start isEmpty. Operand 2724 states and 4077 transitions. [2021-10-28 09:51:11,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-10-28 09:51:11,193 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:51:11,194 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:51:11,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-10-28 09:51:11,194 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:51:11,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:51:11,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1875401929, now seen corresponding path program 1 times [2021-10-28 09:51:11,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:51:11,195 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894133714] [2021-10-28 09:51:11,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:51:11,196 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:51:11,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:51:11,256 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-10-28 09:51:11,257 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:51:11,257 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894133714] [2021-10-28 09:51:11,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894133714] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:51:11,259 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:51:11,259 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:51:11,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182231186] [2021-10-28 09:51:11,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:51:11,260 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:51:11,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:51:11,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:51:11,261 INFO L87 Difference]: Start difference. First operand 2724 states and 4077 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:51:11,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:51:11,544 INFO L93 Difference]: Finished difference Result 5472 states and 8182 transitions. [2021-10-28 09:51:11,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:51:11,545 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 134 [2021-10-28 09:51:11,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:51:11,564 INFO L225 Difference]: With dead ends: 5472 [2021-10-28 09:51:11,564 INFO L226 Difference]: Without dead ends: 2756 [2021-10-28 09:51:11,568 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:51:11,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2756 states. [2021-10-28 09:51:11,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2756 to 2724. [2021-10-28 09:51:11,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2724 states, 2723 states have (on average 1.485493940506794) internal successors, (4045), 2723 states have internal predecessors, (4045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:51:11,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2724 states to 2724 states and 4045 transitions. [2021-10-28 09:51:11,714 INFO L78 Accepts]: Start accepts. Automaton has 2724 states and 4045 transitions. Word has length 134 [2021-10-28 09:51:11,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:51:11,714 INFO L470 AbstractCegarLoop]: Abstraction has 2724 states and 4045 transitions. [2021-10-28 09:51:11,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:51:11,715 INFO L276 IsEmpty]: Start isEmpty. Operand 2724 states and 4045 transitions. [2021-10-28 09:51:11,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-10-28 09:51:11,723 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:51:11,723 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 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, 1, 1] [2021-10-28 09:51:11,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-10-28 09:51:11,723 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:51:11,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:51:11,724 INFO L85 PathProgramCache]: Analyzing trace with hash 214407641, now seen corresponding path program 1 times [2021-10-28 09:51:11,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:51:11,725 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345212203] [2021-10-28 09:51:11,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:51:11,726 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:51:11,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:51:11,771 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 159 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-10-28 09:51:11,771 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:51:11,772 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345212203] [2021-10-28 09:51:11,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345212203] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:51:11,772 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:51:11,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:51:11,772 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941957191] [2021-10-28 09:51:11,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:51:11,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:51:11,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:51:11,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:51:11,774 INFO L87 Difference]: Start difference. First operand 2724 states and 4045 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:51:12,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:51:12,088 INFO L93 Difference]: Finished difference Result 5522 states and 8175 transitions. [2021-10-28 09:51:12,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:51:12,089 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 164 [2021-10-28 09:51:12,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:51:12,108 INFO L225 Difference]: With dead ends: 5522 [2021-10-28 09:51:12,108 INFO L226 Difference]: Without dead ends: 2806 [2021-10-28 09:51:12,113 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:51:12,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2806 states. [2021-10-28 09:51:12,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2806 to 2724. [2021-10-28 09:51:12,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2724 states, 2723 states have (on average 1.4531766434080058) internal successors, (3957), 2723 states have internal predecessors, (3957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:51:12,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2724 states to 2724 states and 3957 transitions. [2021-10-28 09:51:12,297 INFO L78 Accepts]: Start accepts. Automaton has 2724 states and 3957 transitions. Word has length 164 [2021-10-28 09:51:12,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:51:12,298 INFO L470 AbstractCegarLoop]: Abstraction has 2724 states and 3957 transitions. [2021-10-28 09:51:12,298 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:51:12,298 INFO L276 IsEmpty]: Start isEmpty. Operand 2724 states and 3957 transitions. [2021-10-28 09:51:12,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-10-28 09:51:12,304 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:51:12,304 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 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, 1, 1, 1, 1] [2021-10-28 09:51:12,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-10-28 09:51:12,305 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:51:12,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:51:12,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1161445527, now seen corresponding path program 1 times [2021-10-28 09:51:12,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:51:12,306 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466135834] [2021-10-28 09:51:12,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:51:12,306 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:51:12,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:51:12,349 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 159 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-10-28 09:51:12,350 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:51:12,350 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466135834] [2021-10-28 09:51:12,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466135834] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:51:12,350 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:51:12,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:51:12,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173549463] [2021-10-28 09:51:12,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:51:12,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:51:12,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:51:12,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:51:12,353 INFO L87 Difference]: Start difference. First operand 2724 states and 3957 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:51:12,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:51:12,679 INFO L93 Difference]: Finished difference Result 5712 states and 8274 transitions. [2021-10-28 09:51:12,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:51:12,680 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 164 [2021-10-28 09:51:12,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:51:12,709 INFO L225 Difference]: With dead ends: 5712 [2021-10-28 09:51:12,715 INFO L226 Difference]: Without dead ends: 2996 [2021-10-28 09:51:12,720 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:51:12,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2996 states. [2021-10-28 09:51:12,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2996 to 2840. [2021-10-28 09:51:12,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2840 states, 2839 states have (on average 1.424797463895738) internal successors, (4045), 2839 states have internal predecessors, (4045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:51:12,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2840 states to 2840 states and 4045 transitions. [2021-10-28 09:51:12,902 INFO L78 Accepts]: Start accepts. Automaton has 2840 states and 4045 transitions. Word has length 164 [2021-10-28 09:51:12,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:51:12,903 INFO L470 AbstractCegarLoop]: Abstraction has 2840 states and 4045 transitions. [2021-10-28 09:51:12,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:51:12,903 INFO L276 IsEmpty]: Start isEmpty. Operand 2840 states and 4045 transitions. [2021-10-28 09:51:12,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-10-28 09:51:12,910 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:51:12,910 INFO L513 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:51:12,910 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-10-28 09:51:12,910 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:51:12,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:51:12,911 INFO L85 PathProgramCache]: Analyzing trace with hash -2016709837, now seen corresponding path program 1 times [2021-10-28 09:51:12,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:51:12,911 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668747437] [2021-10-28 09:51:12,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:51:12,912 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:51:12,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:51:12,973 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 155 proven. 11 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2021-10-28 09:51:12,974 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:51:12,974 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668747437] [2021-10-28 09:51:12,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668747437] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:51:12,974 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197529185] [2021-10-28 09:51:12,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:51:12,975 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:51:12,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdbe8dcd-2e08-4836-8194-7fc491842145/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:51:12,980 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdbe8dcd-2e08-4836-8194-7fc491842145/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:51:12,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdbe8dcd-2e08-4836-8194-7fc491842145/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-28 09:51:13,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:51:13,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-28 09:51:13,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:51:13,964 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 320 trivial. 0 not checked. [2021-10-28 09:51:13,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [197529185] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:51:13,964 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:51:13,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-10-28 09:51:13,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98771432] [2021-10-28 09:51:13,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:51:13,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:51:13,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:51:13,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:51:13,967 INFO L87 Difference]: Start difference. First operand 2840 states and 4045 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) [2021-10-28 09:51:14,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:51:14,235 INFO L93 Difference]: Finished difference Result 8485 states and 12072 transitions. [2021-10-28 09:51:14,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:51:14,236 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 172 [2021-10-28 09:51:14,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:51:14,250 INFO L225 Difference]: With dead ends: 8485 [2021-10-28 09:51:14,250 INFO L226 Difference]: Without dead ends: 5653 [2021-10-28 09:51:14,256 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:51:14,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5653 states. [2021-10-28 09:51:14,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5653 to 5651. [2021-10-28 09:51:14,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5651 states, 5650 states have (on average 1.4219469026548672) internal successors, (8034), 5650 states have internal predecessors, (8034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:51:14,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5651 states to 5651 states and 8034 transitions. [2021-10-28 09:51:14,606 INFO L78 Accepts]: Start accepts. Automaton has 5651 states and 8034 transitions. Word has length 172 [2021-10-28 09:51:14,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:51:14,606 INFO L470 AbstractCegarLoop]: Abstraction has 5651 states and 8034 transitions. [2021-10-28 09:51:14,607 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) [2021-10-28 09:51:14,608 INFO L276 IsEmpty]: Start isEmpty. Operand 5651 states and 8034 transitions. [2021-10-28 09:51:14,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-10-28 09:51:14,617 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:51:14,618 INFO L513 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:51:14,664 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdbe8dcd-2e08-4836-8194-7fc491842145/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-28 09:51:14,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdbe8dcd-2e08-4836-8194-7fc491842145/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:51:14,843 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:51:14,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:51:14,844 INFO L85 PathProgramCache]: Analyzing trace with hash 594356241, now seen corresponding path program 1 times [2021-10-28 09:51:14,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:51:14,844 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015227171] [2021-10-28 09:51:14,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:51:14,844 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:51:14,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:51:14,911 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 155 proven. 11 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2021-10-28 09:51:14,912 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:51:14,912 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015227171] [2021-10-28 09:51:14,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015227171] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:51:14,912 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1829786966] [2021-10-28 09:51:14,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:51:14,913 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:51:14,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdbe8dcd-2e08-4836-8194-7fc491842145/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:51:14,916 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdbe8dcd-2e08-4836-8194-7fc491842145/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:51:14,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdbe8dcd-2e08-4836-8194-7fc491842145/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-28 09:51:15,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:51:15,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 09:51:15,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:51:15,561 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 308 trivial. 0 not checked. [2021-10-28 09:51:15,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1829786966] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:51:15,562 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:51:15,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-10-28 09:51:15,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513948841] [2021-10-28 09:51:15,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:51:15,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:51:15,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:51:15,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:51:15,565 INFO L87 Difference]: Start difference. First operand 5651 states and 8034 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) [2021-10-28 09:51:16,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:51:16,034 INFO L93 Difference]: Finished difference Result 11837 states and 16799 transitions. [2021-10-28 09:51:16,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:51:16,035 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 173 [2021-10-28 09:51:16,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:51:16,052 INFO L225 Difference]: With dead ends: 11837 [2021-10-28 09:51:16,052 INFO L226 Difference]: Without dead ends: 5995 [2021-10-28 09:51:16,062 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:51:16,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5995 states. [2021-10-28 09:51:16,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5995 to 5835. [2021-10-28 09:51:16,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5835 states, 5834 states have (on average 1.4168666438121358) internal successors, (8266), 5834 states have internal predecessors, (8266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:51:16,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5835 states to 5835 states and 8266 transitions. [2021-10-28 09:51:16,424 INFO L78 Accepts]: Start accepts. Automaton has 5835 states and 8266 transitions. Word has length 173 [2021-10-28 09:51:16,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:51:16,424 INFO L470 AbstractCegarLoop]: Abstraction has 5835 states and 8266 transitions. [2021-10-28 09:51:16,425 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) [2021-10-28 09:51:16,425 INFO L276 IsEmpty]: Start isEmpty. Operand 5835 states and 8266 transitions. [2021-10-28 09:51:16,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-10-28 09:51:16,436 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:51:16,436 INFO L513 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:51:16,484 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdbe8dcd-2e08-4836-8194-7fc491842145/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-28 09:51:16,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdbe8dcd-2e08-4836-8194-7fc491842145/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2021-10-28 09:51:16,651 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:51:16,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:51:16,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1057591537, now seen corresponding path program 1 times [2021-10-28 09:51:16,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:51:16,652 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119953027] [2021-10-28 09:51:16,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:51:16,653 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:51:16,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:51:16,721 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 130 proven. 6 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2021-10-28 09:51:16,721 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:51:16,721 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119953027] [2021-10-28 09:51:16,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119953027] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:51:16,722 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1856080024] [2021-10-28 09:51:16,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:51:16,722 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:51:16,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdbe8dcd-2e08-4836-8194-7fc491842145/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:51:16,723 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdbe8dcd-2e08-4836-8194-7fc491842145/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:51:16,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdbe8dcd-2e08-4836-8194-7fc491842145/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-28 09:51:17,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:51:17,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 09:51:17,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:51:17,581 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2021-10-28 09:51:17,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1856080024] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:51:17,582 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:51:17,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-10-28 09:51:17,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140569273] [2021-10-28 09:51:17,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:51:17,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:51:17,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:51:17,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:51:17,586 INFO L87 Difference]: Start difference. First operand 5835 states and 8266 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:51:17,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:51:17,942 INFO L93 Difference]: Finished difference Result 10594 states and 14958 transitions. [2021-10-28 09:51:17,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:51:17,943 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 174 [2021-10-28 09:51:17,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:51:17,960 INFO L225 Difference]: With dead ends: 10594 [2021-10-28 09:51:17,966 INFO L226 Difference]: Without dead ends: 4616 [2021-10-28 09:51:17,975 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:51:17,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4616 states. [2021-10-28 09:51:18,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4616 to 4472. [2021-10-28 09:51:18,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4472 states, 4471 states have (on average 1.4146723328114517) internal successors, (6325), 4471 states have internal predecessors, (6325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:51:18,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4472 states to 4472 states and 6325 transitions. [2021-10-28 09:51:18,199 INFO L78 Accepts]: Start accepts. Automaton has 4472 states and 6325 transitions. Word has length 174 [2021-10-28 09:51:18,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:51:18,199 INFO L470 AbstractCegarLoop]: Abstraction has 4472 states and 6325 transitions. [2021-10-28 09:51:18,200 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:51:18,200 INFO L276 IsEmpty]: Start isEmpty. Operand 4472 states and 6325 transitions. [2021-10-28 09:51:18,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-10-28 09:51:18,209 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:51:18,212 INFO L513 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:51:18,261 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdbe8dcd-2e08-4836-8194-7fc491842145/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-28 09:51:18,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdbe8dcd-2e08-4836-8194-7fc491842145/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:51:18,427 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:51:18,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:51:18,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1886384411, now seen corresponding path program 1 times [2021-10-28 09:51:18,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:51:18,428 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521583240] [2021-10-28 09:51:18,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:51:18,428 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:51:18,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:51:18,505 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 151 proven. 78 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-10-28 09:51:18,506 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:51:18,506 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521583240] [2021-10-28 09:51:18,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521583240] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:51:18,506 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [678603048] [2021-10-28 09:51:18,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:51:18,507 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:51:18,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdbe8dcd-2e08-4836-8194-7fc491842145/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:51:18,508 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdbe8dcd-2e08-4836-8194-7fc491842145/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:51:18,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdbe8dcd-2e08-4836-8194-7fc491842145/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-28 09:51:18,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:51:18,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 09:51:18,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:51:19,448 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2021-10-28 09:51:19,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [678603048] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:51:19,449 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:51:19,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2021-10-28 09:51:19,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035840638] [2021-10-28 09:51:19,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:51:19,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:51:19,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:51:19,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:51:19,451 INFO L87 Difference]: Start difference. First operand 4472 states and 6325 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:51:19,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:51:19,666 INFO L93 Difference]: Finished difference Result 8871 states and 12552 transitions. [2021-10-28 09:51:19,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:51:19,666 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2021-10-28 09:51:19,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:51:19,680 INFO L225 Difference]: With dead ends: 8871 [2021-10-28 09:51:19,680 INFO L226 Difference]: Without dead ends: 4474 [2021-10-28 09:51:19,688 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:51:19,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4474 states. [2021-10-28 09:51:19,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4474 to 4472. [2021-10-28 09:51:19,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4472 states, 4471 states have (on average 1.4110937150525609) internal successors, (6309), 4471 states have internal predecessors, (6309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:51:19,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4472 states to 4472 states and 6309 transitions. [2021-10-28 09:51:19,891 INFO L78 Accepts]: Start accepts. Automaton has 4472 states and 6309 transitions. Word has length 177 [2021-10-28 09:51:19,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:51:19,892 INFO L470 AbstractCegarLoop]: Abstraction has 4472 states and 6309 transitions. [2021-10-28 09:51:19,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:51:19,893 INFO L276 IsEmpty]: Start isEmpty. Operand 4472 states and 6309 transitions. [2021-10-28 09:51:19,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-10-28 09:51:19,901 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:51:19,902 INFO L513 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:51:19,946 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdbe8dcd-2e08-4836-8194-7fc491842145/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-28 09:51:20,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdbe8dcd-2e08-4836-8194-7fc491842145/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-10-28 09:51:20,127 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:51:20,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:51:20,128 INFO L85 PathProgramCache]: Analyzing trace with hash 2144549849, now seen corresponding path program 1 times [2021-10-28 09:51:20,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:51:20,128 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049327185] [2021-10-28 09:51:20,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:51:20,128 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:51:20,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:51:20,236 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 151 proven. 78 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-10-28 09:51:20,236 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:51:20,237 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049327185] [2021-10-28 09:51:20,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049327185] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:51:20,237 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [60511586] [2021-10-28 09:51:20,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:51:20,237 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:51:20,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdbe8dcd-2e08-4836-8194-7fc491842145/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:51:20,239 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdbe8dcd-2e08-4836-8194-7fc491842145/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:51:20,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdbe8dcd-2e08-4836-8194-7fc491842145/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-28 09:51:20,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:51:20,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 09:51:20,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:51:20,993 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 329 trivial. 0 not checked. [2021-10-28 09:51:20,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [60511586] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:51:20,993 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:51:20,994 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2021-10-28 09:51:20,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463590463] [2021-10-28 09:51:20,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:51:20,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:51:20,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:51:20,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:51:20,995 INFO L87 Difference]: Start difference. First operand 4472 states and 6309 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) [2021-10-28 09:51:21,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:51:21,289 INFO L93 Difference]: Finished difference Result 7804 states and 10978 transitions. [2021-10-28 09:51:21,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:51:21,289 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 177 [2021-10-28 09:51:21,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:51:21,299 INFO L225 Difference]: With dead ends: 7804 [2021-10-28 09:51:21,300 INFO L226 Difference]: Without dead ends: 3299 [2021-10-28 09:51:21,305 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:51:21,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3299 states. [2021-10-28 09:51:21,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3299 to 3179. [2021-10-28 09:51:21,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3179 states, 3178 states have (on average 1.4059156702328508) internal successors, (4468), 3178 states have internal predecessors, (4468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:51:21,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3179 states to 3179 states and 4468 transitions. [2021-10-28 09:51:21,442 INFO L78 Accepts]: Start accepts. Automaton has 3179 states and 4468 transitions. Word has length 177 [2021-10-28 09:51:21,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:51:21,442 INFO L470 AbstractCegarLoop]: Abstraction has 3179 states and 4468 transitions. [2021-10-28 09:51:21,443 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) [2021-10-28 09:51:21,443 INFO L276 IsEmpty]: Start isEmpty. Operand 3179 states and 4468 transitions. [2021-10-28 09:51:21,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-10-28 09:51:21,452 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:51:21,453 INFO L513 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:51:21,499 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdbe8dcd-2e08-4836-8194-7fc491842145/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-28 09:51:21,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdbe8dcd-2e08-4836-8194-7fc491842145/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:51:21,679 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:51:21,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:51:21,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1199573560, now seen corresponding path program 2 times [2021-10-28 09:51:21,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:51:21,680 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892939355] [2021-10-28 09:51:21,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:51:21,680 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:51:21,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:51:21,744 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 191 proven. 19 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2021-10-28 09:51:21,744 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:51:21,745 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892939355] [2021-10-28 09:51:21,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892939355] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:51:21,745 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1638785134] [2021-10-28 09:51:21,745 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:51:21,745 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:51:21,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdbe8dcd-2e08-4836-8194-7fc491842145/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:51:21,746 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdbe8dcd-2e08-4836-8194-7fc491842145/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:51:21,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdbe8dcd-2e08-4836-8194-7fc491842145/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-28 09:51:22,141 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-28 09:51:22,141 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:51:22,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 09:51:22,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:51:22,581 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2021-10-28 09:51:22,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1638785134] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:51:22,581 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:51:22,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-10-28 09:51:22,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002767513] [2021-10-28 09:51:22,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:51:22,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:51:22,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:51:22,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:51:22,583 INFO L87 Difference]: Start difference. First operand 3179 states and 4468 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) [2021-10-28 09:51:22,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:51:22,939 INFO L93 Difference]: Finished difference Result 6415 states and 9031 transitions. [2021-10-28 09:51:22,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:51:22,940 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 182 [2021-10-28 09:51:22,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:51:22,950 INFO L225 Difference]: With dead ends: 6415 [2021-10-28 09:51:22,950 INFO L226 Difference]: Without dead ends: 3363 [2021-10-28 09:51:22,955 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:51:22,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3363 states. [2021-10-28 09:51:23,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3363 to 3179. [2021-10-28 09:51:23,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3179 states, 3178 states have (on average 1.4008810572687225) internal successors, (4452), 3178 states have internal predecessors, (4452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:51:23,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3179 states to 3179 states and 4452 transitions. [2021-10-28 09:51:23,132 INFO L78 Accepts]: Start accepts. Automaton has 3179 states and 4452 transitions. Word has length 182 [2021-10-28 09:51:23,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:51:23,133 INFO L470 AbstractCegarLoop]: Abstraction has 3179 states and 4452 transitions. [2021-10-28 09:51:23,133 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) [2021-10-28 09:51:23,134 INFO L276 IsEmpty]: Start isEmpty. Operand 3179 states and 4452 transitions. [2021-10-28 09:51:23,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-10-28 09:51:23,139 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:51:23,140 INFO L513 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:51:23,186 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdbe8dcd-2e08-4836-8194-7fc491842145/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-28 09:51:23,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdbe8dcd-2e08-4836-8194-7fc491842145/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:51:23,355 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:51:23,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:51:23,356 INFO L85 PathProgramCache]: Analyzing trace with hash -97142242, now seen corresponding path program 1 times [2021-10-28 09:51:23,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:51:23,356 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889109188] [2021-10-28 09:51:23,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:51:23,356 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:51:23,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:51:23,422 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 195 proven. 23 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2021-10-28 09:51:23,422 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:51:23,423 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889109188] [2021-10-28 09:51:23,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889109188] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:51:23,423 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [929718248] [2021-10-28 09:51:23,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:51:23,423 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:51:23,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdbe8dcd-2e08-4836-8194-7fc491842145/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:51:23,436 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdbe8dcd-2e08-4836-8194-7fc491842145/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:51:23,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdbe8dcd-2e08-4836-8194-7fc491842145/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-28 09:51:23,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:51:23,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 09:51:23,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:51:24,357 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 360 trivial. 0 not checked. [2021-10-28 09:51:24,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [929718248] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:51:24,358 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:51:24,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-10-28 09:51:24,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379352708] [2021-10-28 09:51:24,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:51:24,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:51:24,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:51:24,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:51:24,360 INFO L87 Difference]: Start difference. First operand 3179 states and 4452 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) [2021-10-28 09:51:24,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:51:24,647 INFO L93 Difference]: Finished difference Result 6311 states and 8831 transitions. [2021-10-28 09:51:24,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:51:24,648 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 184 [2021-10-28 09:51:24,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:51:24,657 INFO L225 Difference]: With dead ends: 6311 [2021-10-28 09:51:24,658 INFO L226 Difference]: Without dead ends: 3275 [2021-10-28 09:51:24,662 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:51:24,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3275 states. [2021-10-28 09:51:24,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3275 to 3179. [2021-10-28 09:51:24,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3179 states, 3178 states have (on average 1.3958464443045941) internal successors, (4436), 3178 states have internal predecessors, (4436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:51:24,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3179 states to 3179 states and 4436 transitions. [2021-10-28 09:51:24,798 INFO L78 Accepts]: Start accepts. Automaton has 3179 states and 4436 transitions. Word has length 184 [2021-10-28 09:51:24,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:51:24,798 INFO L470 AbstractCegarLoop]: Abstraction has 3179 states and 4436 transitions. [2021-10-28 09:51:24,799 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) [2021-10-28 09:51:24,799 INFO L276 IsEmpty]: Start isEmpty. Operand 3179 states and 4436 transitions. [2021-10-28 09:51:24,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-10-28 09:51:24,803 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:51:24,803 INFO L513 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:51:24,844 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdbe8dcd-2e08-4836-8194-7fc491842145/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-28 09:51:25,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdbe8dcd-2e08-4836-8194-7fc491842145/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:51:25,027 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:51:25,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:51:25,028 INFO L85 PathProgramCache]: Analyzing trace with hash -301230506, now seen corresponding path program 3 times [2021-10-28 09:51:25,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:51:25,028 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105633301] [2021-10-28 09:51:25,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:51:25,028 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:51:25,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:51:25,078 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 196 proven. 27 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2021-10-28 09:51:25,079 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:51:25,079 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105633301] [2021-10-28 09:51:25,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105633301] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:51:25,079 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [626687672] [2021-10-28 09:51:25,080 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 09:51:25,080 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:51:25,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdbe8dcd-2e08-4836-8194-7fc491842145/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:51:25,088 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdbe8dcd-2e08-4836-8194-7fc491842145/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:51:25,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdbe8dcd-2e08-4836-8194-7fc491842145/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-28 09:51:25,588 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-28 09:51:25,588 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:51:25,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-28 09:51:25,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:51:26,023 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2021-10-28 09:51:26,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [626687672] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:51:26,024 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:51:26,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2021-10-28 09:51:26,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030116438] [2021-10-28 09:51:26,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:51:26,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:51:26,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:51:26,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:51:26,026 INFO L87 Difference]: Start difference. First operand 3179 states and 4436 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:51:26,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:51:26,399 INFO L93 Difference]: Finished difference Result 6549 states and 9060 transitions. [2021-10-28 09:51:26,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 09:51:26,400 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 189 [2021-10-28 09:51:26,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:51:26,411 INFO L225 Difference]: With dead ends: 6549 [2021-10-28 09:51:26,412 INFO L226 Difference]: Without dead ends: 3561 [2021-10-28 09:51:26,415 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:51:26,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3561 states. [2021-10-28 09:51:26,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3561 to 3171. [2021-10-28 09:51:26,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3171 states, 3170 states have (on average 1.3943217665615142) internal successors, (4420), 3170 states have internal predecessors, (4420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:51:26,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3171 states to 3171 states and 4420 transitions. [2021-10-28 09:51:26,577 INFO L78 Accepts]: Start accepts. Automaton has 3171 states and 4420 transitions. Word has length 189 [2021-10-28 09:51:26,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:51:26,578 INFO L470 AbstractCegarLoop]: Abstraction has 3171 states and 4420 transitions. [2021-10-28 09:51:26,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:51:26,578 INFO L276 IsEmpty]: Start isEmpty. Operand 3171 states and 4420 transitions. [2021-10-28 09:51:26,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2021-10-28 09:51:26,583 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:51:26,583 INFO L513 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:51:26,629 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdbe8dcd-2e08-4836-8194-7fc491842145/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-28 09:51:26,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdbe8dcd-2e08-4836-8194-7fc491842145/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-10-28 09:51:26,802 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:51:26,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:51:26,803 INFO L85 PathProgramCache]: Analyzing trace with hash -2051917229, now seen corresponding path program 1 times [2021-10-28 09:51:26,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:51:26,803 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228684891] [2021-10-28 09:51:26,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:51:26,803 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:51:26,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:51:26,890 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:51:26,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:51:27,063 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:51:27,064 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 09:51:27,065 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:51:27,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-10-28 09:51:27,072 INFO L731 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:51:27,076 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 09:51:27,276 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:51:27 BoogieIcfgContainer [2021-10-28 09:51:27,277 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 09:51:27,278 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:51:27,278 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:51:27,278 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:51:27,279 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:51:02" (3/4) ... [2021-10-28 09:51:27,281 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-28 09:51:27,477 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdbe8dcd-2e08-4836-8194-7fc491842145/bin/uautomizer-UnR33cPsHg/witness.graphml [2021-10-28 09:51:27,478 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:51:27,480 INFO L168 Benchmark]: Toolchain (without parser) took 26754.43 ms. Allocated memory was 86.0 MB in the beginning and 574.6 MB in the end (delta: 488.6 MB). Free memory was 48.9 MB in the beginning and 263.9 MB in the end (delta: -215.0 MB). Peak memory consumption was 274.4 MB. Max. memory is 16.1 GB. [2021-10-28 09:51:27,480 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 86.0 MB. Free memory is still 66.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:51:27,481 INFO L168 Benchmark]: CACSL2BoogieTranslator took 474.20 ms. Allocated memory was 86.0 MB in the beginning and 109.1 MB in the end (delta: 23.1 MB). Free memory was 48.7 MB in the beginning and 80.0 MB in the end (delta: -31.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-28 09:51:27,482 INFO L168 Benchmark]: Boogie Procedure Inliner took 134.86 ms. Allocated memory is still 109.1 MB. Free memory was 80.0 MB in the beginning and 77.1 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:51:27,482 INFO L168 Benchmark]: Boogie Preprocessor took 57.02 ms. Allocated memory is still 109.1 MB. Free memory was 77.1 MB in the beginning and 74.9 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:51:27,483 INFO L168 Benchmark]: RCFGBuilder took 1082.08 ms. Allocated memory is still 109.1 MB. Free memory was 74.4 MB in the beginning and 44.8 MB in the end (delta: 29.6 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. [2021-10-28 09:51:27,483 INFO L168 Benchmark]: TraceAbstraction took 24772.63 ms. Allocated memory was 109.1 MB in the beginning and 574.6 MB in the end (delta: 465.6 MB). Free memory was 84.5 MB in the beginning and 286.0 MB in the end (delta: -201.5 MB). Peak memory consumption was 262.6 MB. Max. memory is 16.1 GB. [2021-10-28 09:51:27,488 INFO L168 Benchmark]: Witness Printer took 200.29 ms. Allocated memory is still 574.6 MB. Free memory was 286.0 MB in the beginning and 263.9 MB in the end (delta: 22.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:51:27,491 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 86.0 MB. Free memory is still 66.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 474.20 ms. Allocated memory was 86.0 MB in the beginning and 109.1 MB in the end (delta: 23.1 MB). Free memory was 48.7 MB in the beginning and 80.0 MB in the end (delta: -31.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 134.86 ms. Allocated memory is still 109.1 MB. Free memory was 80.0 MB in the beginning and 77.1 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 57.02 ms. Allocated memory is still 109.1 MB. Free memory was 77.1 MB in the beginning and 74.9 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1082.08 ms. Allocated memory is still 109.1 MB. Free memory was 74.4 MB in the beginning and 44.8 MB in the end (delta: 29.6 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 24772.63 ms. Allocated memory was 109.1 MB in the beginning and 574.6 MB in the end (delta: 465.6 MB). Free memory was 84.5 MB in the beginning and 286.0 MB in the end (delta: -201.5 MB). Peak memory consumption was 262.6 MB. Max. memory is 16.1 GB. * Witness Printer took 200.29 ms. Allocated memory is still 574.6 MB. Free memory was 286.0 MB in the beginning and 263.9 MB in the end (delta: 22.0 MB). Peak memory consumption was 23.1 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, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 642]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L647] int s ; [L648] int tmp ; [L652] s = 8464 [L24] int s__info_callback = __VERIFIER_nondet_int() ; [L25] int s__in_handshake = __VERIFIER_nondet_int() ; [L26] int s__state ; [L27] int s__new_session ; [L28] int s__server ; [L29] int s__version = __VERIFIER_nondet_int() ; [L30] int s__type ; [L31] int s__init_num ; [L32] int s__hit = __VERIFIER_nondet_int() ; [L33] int s__rwstate ; [L34] int s__init_buf___0 = 1; [L35] int s__debug = __VERIFIER_nondet_int() ; [L36] int s__shutdown ; [L37] int s__cert = __VERIFIER_nondet_int() ; [L38] int s__options = __VERIFIER_nondet_int() ; [L39] int s__verify_mode = __VERIFIER_nondet_int() ; [L40] int s__session__peer = __VERIFIER_nondet_int() ; [L41] int s__cert__pkeys__AT0__privatekey = __VERIFIER_nondet_int() ; [L42] int s__ctx__info_callback = __VERIFIER_nondet_int() ; [L43] int s__ctx__stats__sess_accept_renegotiate = __VERIFIER_nondet_int() ; [L44] int s__ctx__stats__sess_accept = __VERIFIER_nondet_int() ; [L45] int s__ctx__stats__sess_accept_good = __VERIFIER_nondet_int() ; [L46] int s__s3__tmp__cert_request ; [L47] int s__s3__tmp__reuse_message = __VERIFIER_nondet_int() ; [L48] int s__s3__tmp__use_rsa_tmp ; [L49] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int() ; [L50] int s__s3__tmp__new_cipher__algorithms ; [L51] int s__s3__tmp__next_state___0 ; [L52] int s__s3__tmp__new_cipher__algo_strength ; [L53] int s__session__cipher ; [L54] int buf ; [L55] unsigned long l ; [L56] unsigned long Time ; [L57] unsigned long tmp ; [L58] int cb ; [L59] long num1 = __VERIFIER_nondet_long() ; [L60] int ret ; [L61] int new_state ; [L62] int state ; [L63] int skip ; [L64] int got_new_session ; [L65] int tmp___1 = __VERIFIER_nondet_int() ; [L66] int tmp___2 = __VERIFIER_nondet_int() ; [L67] int tmp___3 = __VERIFIER_nondet_int() ; [L68] int tmp___4 = __VERIFIER_nondet_int() ; [L69] int tmp___5 = __VERIFIER_nondet_int() ; [L70] int tmp___6 = __VERIFIER_nondet_int() ; [L71] int tmp___7 = __VERIFIER_nondet_int() ; [L72] long tmp___8 = __VERIFIER_nondet_long() ; [L73] int tmp___9 = __VERIFIER_nondet_int() ; [L74] int tmp___10 = __VERIFIER_nondet_int() ; [L75] int blastFlag ; [L76] int __cil_tmp55 ; [L77] unsigned long __cil_tmp56 ; [L78] unsigned long __cil_tmp57 ; [L79] unsigned long __cil_tmp58 = __VERIFIER_nondet_ulong() ; [L80] unsigned long __cil_tmp59 ; [L81] int __cil_tmp60 ; [L82] unsigned long __cil_tmp61 ; [L85] s__state = initial_state [L86] blastFlag = 0 [L87] tmp = __VERIFIER_nondet_int() [L88] Time = tmp [L89] cb = 0 [L90] ret = -1 [L91] skip = 0 [L92] got_new_session = 0 [L93] COND TRUE s__info_callback != 0 [L94] cb = s__info_callback [L100] s__in_handshake ++ [L101] COND TRUE tmp___1 + 12288 [L102] COND TRUE tmp___2 + 16384 [L106] COND FALSE !(s__cert == 0) [L110] COND TRUE 1 [L112] state = s__state [L113] COND FALSE !(s__state == 12292) [L116] COND FALSE !(s__state == 16384) [L119] COND FALSE !(s__state == 8192) [L122] COND FALSE !(s__state == 24576) [L125] COND FALSE !(s__state == 8195) [L128] COND FALSE !(s__state == 8480) [L131] COND FALSE !(s__state == 8481) [L134] COND FALSE !(s__state == 8482) [L137] COND TRUE s__state == 8464 [L283] s__shutdown = 0 [L284] ret = __VERIFIER_nondet_int() [L285] COND TRUE blastFlag == 0 [L286] blastFlag = 1 [L288] COND FALSE !(ret <= 0) [L291] got_new_session = 1 [L292] s__state = 8496 [L293] s__init_num = 0 [L596] COND FALSE !(! s__s3__tmp__reuse_message) [L614] COND FALSE !(state == 8576) [L631] skip = 0 [L110] COND TRUE 1 [L112] state = s__state [L113] COND FALSE !(s__state == 12292) [L116] COND FALSE !(s__state == 16384) [L119] COND FALSE !(s__state == 8192) [L122] COND FALSE !(s__state == 24576) [L125] COND FALSE !(s__state == 8195) [L128] COND FALSE !(s__state == 8480) [L131] COND FALSE !(s__state == 8481) [L134] COND FALSE !(s__state == 8482) [L137] COND FALSE !(s__state == 8464) [L140] COND FALSE !(s__state == 8465) [L143] COND FALSE !(s__state == 8466) [L146] COND TRUE s__state == 8496 [L297] ret = __VERIFIER_nondet_int() [L298] COND TRUE blastFlag == 1 [L299] blastFlag = 2 [L305] COND FALSE !(ret <= 0) [L308] COND FALSE !(\read(s__hit)) [L311] s__state = 8512 [L313] s__init_num = 0 [L596] COND FALSE !(! s__s3__tmp__reuse_message) [L614] COND FALSE !(state == 8576) [L631] skip = 0 [L110] COND TRUE 1 [L112] state = s__state [L113] COND FALSE !(s__state == 12292) [L116] COND FALSE !(s__state == 16384) [L119] COND FALSE !(s__state == 8192) [L122] COND FALSE !(s__state == 24576) [L125] COND FALSE !(s__state == 8195) [L128] COND FALSE !(s__state == 8480) [L131] COND FALSE !(s__state == 8481) [L134] COND FALSE !(s__state == 8482) [L137] COND FALSE !(s__state == 8464) [L140] COND FALSE !(s__state == 8465) [L143] COND FALSE !(s__state == 8466) [L146] COND FALSE !(s__state == 8496) [L149] COND FALSE !(s__state == 8497) [L152] COND TRUE s__state == 8512 [L318] s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() [L319] __cil_tmp56 = (unsigned long )s__s3__tmp__new_cipher__algorithms [L320] COND TRUE __cil_tmp56 + 256UL [L321] skip = 1 [L329] s__state = 8528 [L330] s__init_num = 0 [L596] COND FALSE !(! s__s3__tmp__reuse_message) [L614] COND FALSE !(state == 8576) [L631] skip = 0 [L110] COND TRUE 1 [L112] state = s__state [L113] COND FALSE !(s__state == 12292) [L116] COND FALSE !(s__state == 16384) [L119] COND FALSE !(s__state == 8192) [L122] COND FALSE !(s__state == 24576) [L125] COND FALSE !(s__state == 8195) [L128] COND FALSE !(s__state == 8480) [L131] COND FALSE !(s__state == 8481) [L134] COND FALSE !(s__state == 8482) [L137] COND FALSE !(s__state == 8464) [L140] COND FALSE !(s__state == 8465) [L143] COND FALSE !(s__state == 8466) [L146] COND FALSE !(s__state == 8496) [L149] COND FALSE !(s__state == 8497) [L152] COND FALSE !(s__state == 8512) [L155] COND FALSE !(s__state == 8513) [L158] COND TRUE s__state == 8528 [L334] s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() [L335] l = (unsigned long )s__s3__tmp__new_cipher__algorithms [L337] __cil_tmp57 = (unsigned long )s__options [L338] COND TRUE __cil_tmp57 + 2097152UL [L339] s__s3__tmp__use_rsa_tmp = 1 [L344] COND TRUE \read(s__s3__tmp__use_rsa_tmp) [L371] ret = __VERIFIER_nondet_int() [L372] COND FALSE !(ret <= 0) [L389] s__state = 8544 [L390] s__init_num = 0 [L596] COND FALSE !(! s__s3__tmp__reuse_message) [L614] COND FALSE !(state == 8576) [L631] skip = 0 [L110] COND TRUE 1 [L112] state = s__state [L113] COND FALSE !(s__state == 12292) [L116] COND FALSE !(s__state == 16384) [L119] COND FALSE !(s__state == 8192) [L122] COND FALSE !(s__state == 24576) [L125] COND FALSE !(s__state == 8195) [L128] COND FALSE !(s__state == 8480) [L131] COND FALSE !(s__state == 8481) [L134] COND FALSE !(s__state == 8482) [L137] COND FALSE !(s__state == 8464) [L140] COND FALSE !(s__state == 8465) [L143] COND FALSE !(s__state == 8466) [L146] COND FALSE !(s__state == 8496) [L149] COND FALSE !(s__state == 8497) [L152] COND FALSE !(s__state == 8512) [L155] COND FALSE !(s__state == 8513) [L158] COND FALSE !(s__state == 8528) [L161] COND FALSE !(s__state == 8529) [L164] COND TRUE s__state == 8544 [L394] COND TRUE s__verify_mode + 1 [L395] COND FALSE !(s__session__peer != 0) [L406] s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() [L407] __cil_tmp61 = (unsigned long )s__s3__tmp__new_cipher__algorithms [L408] COND FALSE !(__cil_tmp61 + 256UL) [L418] s__s3__tmp__cert_request = 1 [L419] ret = __VERIFIER_nondet_int() [L420] COND FALSE !(ret <= 0) [L423] s__state = 8448 [L424] s__s3__tmp__next_state___0 = 8576 [L425] s__init_num = 0 [L596] COND FALSE !(! s__s3__tmp__reuse_message) [L614] COND FALSE !(state == 8576) [L631] skip = 0 [L110] COND TRUE 1 [L112] state = s__state [L113] COND FALSE !(s__state == 12292) [L116] COND FALSE !(s__state == 16384) [L119] COND FALSE !(s__state == 8192) [L122] COND FALSE !(s__state == 24576) [L125] COND FALSE !(s__state == 8195) [L128] COND FALSE !(s__state == 8480) [L131] COND FALSE !(s__state == 8481) [L134] COND FALSE !(s__state == 8482) [L137] COND FALSE !(s__state == 8464) [L140] COND FALSE !(s__state == 8465) [L143] COND FALSE !(s__state == 8466) [L146] COND FALSE !(s__state == 8496) [L149] COND FALSE !(s__state == 8497) [L152] COND FALSE !(s__state == 8512) [L155] COND FALSE !(s__state == 8513) [L158] COND FALSE !(s__state == 8528) [L161] COND FALSE !(s__state == 8529) [L164] COND FALSE !(s__state == 8544) [L167] COND FALSE !(s__state == 8545) [L170] COND FALSE !(s__state == 8560) [L173] COND FALSE !(s__state == 8561) [L176] COND TRUE s__state == 8448 [L446] COND FALSE !(num1 > 0L) [L455] s__state = s__s3__tmp__next_state___0 [L596] COND FALSE !(! s__s3__tmp__reuse_message) [L614] COND FALSE !(state == 8576) [L631] skip = 0 [L110] COND TRUE 1 [L112] state = s__state [L113] COND FALSE !(s__state == 12292) [L116] COND FALSE !(s__state == 16384) [L119] COND FALSE !(s__state == 8192) [L122] COND FALSE !(s__state == 24576) [L125] COND FALSE !(s__state == 8195) [L128] COND FALSE !(s__state == 8480) [L131] COND FALSE !(s__state == 8481) [L134] COND FALSE !(s__state == 8482) [L137] COND FALSE !(s__state == 8464) [L140] COND FALSE !(s__state == 8465) [L143] COND FALSE !(s__state == 8466) [L146] COND FALSE !(s__state == 8496) [L149] COND FALSE !(s__state == 8497) [L152] COND FALSE !(s__state == 8512) [L155] COND FALSE !(s__state == 8513) [L158] COND FALSE !(s__state == 8528) [L161] COND FALSE !(s__state == 8529) [L164] COND FALSE !(s__state == 8544) [L167] COND FALSE !(s__state == 8545) [L170] COND FALSE !(s__state == 8560) [L173] COND FALSE !(s__state == 8561) [L176] COND FALSE !(s__state == 8448) [L179] COND TRUE s__state == 8576 [L459] ret = __VERIFIER_nondet_int() [L460] COND FALSE !(ret <= 0) [L463] COND FALSE !(ret == 2) [L466] ret = __VERIFIER_nondet_int() [L467] COND FALSE !(ret <= 0) [L470] s__init_num = 0 [L471] s__state = 8592 [L596] COND FALSE !(! s__s3__tmp__reuse_message) [L614] COND TRUE state == 8576 [L615] COND TRUE s__state == 8592 [L616] COND TRUE tmp___1 != -12288 [L617] COND TRUE tmp___2 != -16384 [L618] COND TRUE __cil_tmp56 != 4294967040 [L619] COND TRUE __cil_tmp58 != 4294967294 [L620] COND TRUE tmp___7 != 1024 [L621] COND TRUE tmp___7 != 512 [L642] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 149 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 24.4s, OverallIterations: 38, TraceHistogramMax: 7, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.1s, AutomataDifference: 8.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 6459 SDtfs, 5740 SDslu, 2456 SDs, 0 SdLazy, 3268 SolverSat, 1244 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1549 GetRequests, 1488 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5835occurred in iteration=31, InterpolantAutomatonStates: 115, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.5s AutomataMinimizationTime, 37 MinimizatonAttempts, 1605 StatesRemovedByMinimization, 34 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 5.7s InterpolantComputationTime, 5451 NumberOfCodeBlocks, 5159 NumberOfCodeBlocksAsserted, 46 NumberOfCheckSat, 5214 ConstructedInterpolants, 0 QuantifiedInterpolants, 8871 SizeOfPredicates, 1 NumberOfNonLiveVariables, 2643 ConjunctsInSsa, 18 ConjunctsInUnsatCore, 45 InterpolantComputations, 37 PerfectInterpolantSequences, 6988/7241 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! [2021-10-28 09:51:27,562 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdbe8dcd-2e08-4836-8194-7fc491842145/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...