./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/openssl/s3_srvr.blast.01.i.cil-2.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_bafe3d53-df8d-4fce-803a-ff8008445675/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bafe3d53-df8d-4fce-803a-ff8008445675/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_bafe3d53-df8d-4fce-803a-ff8008445675/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bafe3d53-df8d-4fce-803a-ff8008445675/bin/uautomizer-UnR33cPsHg/config/AutomizerReach.xml -i ../../sv-benchmarks/c/openssl/s3_srvr.blast.01.i.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bafe3d53-df8d-4fce-803a-ff8008445675/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_bafe3d53-df8d-4fce-803a-ff8008445675/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 a1fff1f2750aedbe7119b44ad3cdc8a2dbfa05ad8147a422ae9aeb0054d6e253 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bafe3d53-df8d-4fce-803a-ff8008445675/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bafe3d53-df8d-4fce-803a-ff8008445675/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_bafe3d53-df8d-4fce-803a-ff8008445675/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bafe3d53-df8d-4fce-803a-ff8008445675/bin/uautomizer-UnR33cPsHg/config/AutomizerReach.xml -i ../../sv-benchmarks/c/openssl/s3_srvr.blast.01.i.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bafe3d53-df8d-4fce-803a-ff8008445675/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bafe3d53-df8d-4fce-803a-ff8008445675/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 a1fff1f2750aedbe7119b44ad3cdc8a2dbfa05ad8147a422ae9aeb0054d6e253 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 08:41:56,908 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 08:41:56,911 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 08:41:56,948 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 08:41:56,949 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 08:41:56,951 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 08:41:56,953 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 08:41:56,955 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 08:41:56,958 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 08:41:56,959 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 08:41:56,961 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 08:41:56,962 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 08:41:56,963 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 08:41:56,965 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 08:41:56,967 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 08:41:56,968 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 08:41:56,970 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 08:41:56,971 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 08:41:56,974 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 08:41:56,977 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 08:41:56,979 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 08:41:56,981 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 08:41:56,983 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 08:41:56,984 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 08:41:56,989 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 08:41:56,989 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 08:41:56,990 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 08:41:56,991 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 08:41:56,992 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 08:41:56,994 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 08:41:56,994 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 08:41:56,995 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 08:41:56,997 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 08:41:56,998 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 08:41:56,999 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 08:41:57,000 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 08:41:57,001 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 08:41:57,002 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 08:41:57,002 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 08:41:57,004 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 08:41:57,005 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 08:41:57,006 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bafe3d53-df8d-4fce-803a-ff8008445675/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 08:41:57,037 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 08:41:57,038 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 08:41:57,038 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 08:41:57,039 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 08:41:57,040 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 08:41:57,041 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 08:41:57,041 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 08:41:57,042 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 08:41:57,042 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 08:41:57,043 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 08:41:57,043 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 08:41:57,044 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 08:41:57,044 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 08:41:57,044 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 08:41:57,045 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 08:41:57,045 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 08:41:57,046 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 08:41:57,046 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 08:41:57,047 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 08:41:57,047 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 08:41:57,048 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 08:41:57,048 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 08:41:57,048 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 08:41:57,048 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 08:41:57,049 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 08:41:57,049 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 08:41:57,049 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 08:41:57,049 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 08:41:57,049 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 08:41:57,050 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 08:41:57,050 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 08:41:57,050 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 08:41:57,050 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_bafe3d53-df8d-4fce-803a-ff8008445675/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bafe3d53-df8d-4fce-803a-ff8008445675/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a1fff1f2750aedbe7119b44ad3cdc8a2dbfa05ad8147a422ae9aeb0054d6e253 [2021-10-28 08:41:57,359 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 08:41:57,386 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 08:41:57,390 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 08:41:57,391 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 08:41:57,392 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 08:41:57,394 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bafe3d53-df8d-4fce-803a-ff8008445675/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/openssl/s3_srvr.blast.01.i.cil-2.c [2021-10-28 08:41:57,488 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bafe3d53-df8d-4fce-803a-ff8008445675/bin/uautomizer-UnR33cPsHg/data/fe0370e7f/21deeb5d76ab47ac8c3609645a0bb463/FLAGce8985fed [2021-10-28 08:41:58,203 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 08:41:58,204 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bafe3d53-df8d-4fce-803a-ff8008445675/sv-benchmarks/c/openssl/s3_srvr.blast.01.i.cil-2.c [2021-10-28 08:41:58,226 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bafe3d53-df8d-4fce-803a-ff8008445675/bin/uautomizer-UnR33cPsHg/data/fe0370e7f/21deeb5d76ab47ac8c3609645a0bb463/FLAGce8985fed [2021-10-28 08:41:58,427 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bafe3d53-df8d-4fce-803a-ff8008445675/bin/uautomizer-UnR33cPsHg/data/fe0370e7f/21deeb5d76ab47ac8c3609645a0bb463 [2021-10-28 08:41:58,431 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 08:41:58,433 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 08:41:58,435 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 08:41:58,441 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 08:41:58,445 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 08:41:58,445 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:41:58" (1/1) ... [2021-10-28 08:41:58,447 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@179cc976 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:41:58, skipping insertion in model container [2021-10-28 08:41:58,447 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:41:58" (1/1) ... [2021-10-28 08:41:58,455 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 08:41:58,549 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 08:41:58,981 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_bafe3d53-df8d-4fce-803a-ff8008445675/sv-benchmarks/c/openssl/s3_srvr.blast.01.i.cil-2.c[72913,72926] [2021-10-28 08:41:59,006 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:41:59,022 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 08:41:59,261 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_bafe3d53-df8d-4fce-803a-ff8008445675/sv-benchmarks/c/openssl/s3_srvr.blast.01.i.cil-2.c[72913,72926] [2021-10-28 08:41:59,275 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:41:59,300 INFO L208 MainTranslator]: Completed translation [2021-10-28 08:41:59,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:41:59 WrapperNode [2021-10-28 08:41:59,302 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 08:41:59,303 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 08:41:59,303 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 08:41:59,304 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 08:41:59,312 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:41:59" (1/1) ... [2021-10-28 08:41:59,360 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:41:59" (1/1) ... [2021-10-28 08:41:59,430 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 08:41:59,431 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 08:41:59,431 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 08:41:59,431 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 08:41:59,440 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:41:59" (1/1) ... [2021-10-28 08:41:59,440 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:41:59" (1/1) ... [2021-10-28 08:41:59,467 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:41:59" (1/1) ... [2021-10-28 08:41:59,468 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:41:59" (1/1) ... [2021-10-28 08:41:59,533 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:41:59" (1/1) ... [2021-10-28 08:41:59,550 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:41:59" (1/1) ... [2021-10-28 08:41:59,558 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:41:59" (1/1) ... [2021-10-28 08:41:59,578 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 08:41:59,578 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 08:41:59,578 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 08:41:59,579 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 08:41:59,582 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:41:59" (1/1) ... [2021-10-28 08:41:59,591 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 08:41:59,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bafe3d53-df8d-4fce-803a-ff8008445675/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:41:59,616 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bafe3d53-df8d-4fce-803a-ff8008445675/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 08:41:59,633 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bafe3d53-df8d-4fce-803a-ff8008445675/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 08:41:59,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-28 08:41:59,670 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 08:41:59,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 08:41:59,670 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-28 08:41:59,671 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-28 08:41:59,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 08:41:59,671 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-28 08:41:59,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 08:41:59,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 08:41:59,914 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-28 08:42:02,862 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2021-10-28 08:42:02,863 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2021-10-28 08:42:02,874 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 08:42:02,874 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-28 08:42:02,876 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:42:02 BoogieIcfgContainer [2021-10-28 08:42:02,877 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 08:42:02,879 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 08:42:02,879 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 08:42:02,883 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 08:42:02,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 08:41:58" (1/3) ... [2021-10-28 08:42:02,884 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c413b24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:42:02, skipping insertion in model container [2021-10-28 08:42:02,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:41:59" (2/3) ... [2021-10-28 08:42:02,885 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c413b24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:42:02, skipping insertion in model container [2021-10-28 08:42:02,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:42:02" (3/3) ... [2021-10-28 08:42:02,887 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.01.i.cil-2.c [2021-10-28 08:42:02,894 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 08:42:02,894 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 08:42:02,956 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 08:42:02,964 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 08:42:02,965 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-28 08:42:02,988 INFO L276 IsEmpty]: Start isEmpty. Operand has 147 states, 145 states have (on average 1.696551724137931) internal successors, (246), 146 states have internal predecessors, (246), 0 states have call successors, (0), 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 08:42:03,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-28 08:42:03,001 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:42:03,002 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, 1, 1] [2021-10-28 08:42:03,002 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:42:03,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:42:03,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1430116946, now seen corresponding path program 1 times [2021-10-28 08:42:03,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:42:03,021 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048902679] [2021-10-28 08:42:03,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:42:03,023 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:42:03,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:42:03,562 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 08:42:03,563 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:42:03,564 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048902679] [2021-10-28 08:42:03,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048902679] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:42:03,565 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:42:03,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 08:42:03,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141100658] [2021-10-28 08:42:03,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 08:42:03,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:42:03,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 08:42:03,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 08:42:03,601 INFO L87 Difference]: Start difference. First operand has 147 states, 145 states have (on average 1.696551724137931) internal successors, (246), 146 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:42:06,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:42:06,201 INFO L93 Difference]: Finished difference Result 319 states and 533 transitions. [2021-10-28 08:42:06,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 08:42:06,203 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-10-28 08:42:06,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:42:06,217 INFO L225 Difference]: With dead ends: 319 [2021-10-28 08:42:06,217 INFO L226 Difference]: Without dead ends: 162 [2021-10-28 08:42:06,221 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 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 08:42:06,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-10-28 08:42:06,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 145. [2021-10-28 08:42:06,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.5416666666666667) internal successors, (222), 144 states have internal predecessors, (222), 0 states have call successors, (0), 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 08:42:06,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 222 transitions. [2021-10-28 08:42:06,271 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 222 transitions. Word has length 47 [2021-10-28 08:42:06,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:42:06,272 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 222 transitions. [2021-10-28 08:42:06,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:42:06,272 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 222 transitions. [2021-10-28 08:42:06,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-10-28 08:42:06,276 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:42:06,276 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:42:06,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 08:42:06,277 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:42:06,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:42:06,278 INFO L85 PathProgramCache]: Analyzing trace with hash -458217405, now seen corresponding path program 1 times [2021-10-28 08:42:06,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:42:06,278 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837814832] [2021-10-28 08:42:06,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:42:06,279 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:42:06,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:42:06,421 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:42:06,421 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:42:06,422 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837814832] [2021-10-28 08:42:06,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837814832] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:42:06,422 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:42:06,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 08:42:06,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057215419] [2021-10-28 08:42:06,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 08:42:06,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:42:06,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 08:42:06,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 08:42:06,430 INFO L87 Difference]: Start difference. First operand 145 states and 222 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:42:08,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:42:08,902 INFO L93 Difference]: Finished difference Result 286 states and 432 transitions. [2021-10-28 08:42:08,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 08:42:08,904 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-10-28 08:42:08,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:42:08,906 INFO L225 Difference]: With dead ends: 286 [2021-10-28 08:42:08,906 INFO L226 Difference]: Without dead ends: 162 [2021-10-28 08:42:08,908 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 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 08:42:08,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-10-28 08:42:08,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 145. [2021-10-28 08:42:08,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.5347222222222223) internal successors, (221), 144 states have internal predecessors, (221), 0 states have call successors, (0), 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 08:42:08,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 221 transitions. [2021-10-28 08:42:08,922 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 221 transitions. Word has length 60 [2021-10-28 08:42:08,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:42:08,923 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 221 transitions. [2021-10-28 08:42:08,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:42:08,923 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 221 transitions. [2021-10-28 08:42:08,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-10-28 08:42:08,926 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:42:08,926 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:42:08,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 08:42:08,927 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:42:08,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:42:08,928 INFO L85 PathProgramCache]: Analyzing trace with hash -374937149, now seen corresponding path program 1 times [2021-10-28 08:42:08,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:42:08,928 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958207281] [2021-10-28 08:42:08,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:42:08,929 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:42:08,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:42:09,034 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:42:09,034 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:42:09,035 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958207281] [2021-10-28 08:42:09,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958207281] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:42:09,035 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:42:09,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 08:42:09,036 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031197517] [2021-10-28 08:42:09,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 08:42:09,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:42:09,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 08:42:09,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 08:42:09,038 INFO L87 Difference]: Start difference. First operand 145 states and 221 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:42:11,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:42:11,518 INFO L93 Difference]: Finished difference Result 285 states and 430 transitions. [2021-10-28 08:42:11,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 08:42:11,519 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-10-28 08:42:11,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:42:11,521 INFO L225 Difference]: With dead ends: 285 [2021-10-28 08:42:11,521 INFO L226 Difference]: Without dead ends: 161 [2021-10-28 08:42:11,522 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 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 08:42:11,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2021-10-28 08:42:11,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 145. [2021-10-28 08:42:11,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.5277777777777777) internal successors, (220), 144 states have internal predecessors, (220), 0 states have call successors, (0), 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 08:42:11,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 220 transitions. [2021-10-28 08:42:11,533 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 220 transitions. Word has length 61 [2021-10-28 08:42:11,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:42:11,534 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 220 transitions. [2021-10-28 08:42:11,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:42:11,534 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 220 transitions. [2021-10-28 08:42:11,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-10-28 08:42:11,537 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:42:11,538 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, 1, 1, 1, 1, 1, 1] [2021-10-28 08:42:11,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 08:42:11,538 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:42:11,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:42:11,539 INFO L85 PathProgramCache]: Analyzing trace with hash 470501247, now seen corresponding path program 1 times [2021-10-28 08:42:11,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:42:11,540 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067028790] [2021-10-28 08:42:11,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:42:11,540 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:42:11,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:42:11,638 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:42:11,638 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:42:11,639 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067028790] [2021-10-28 08:42:11,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067028790] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:42:11,639 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:42:11,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 08:42:11,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64808938] [2021-10-28 08:42:11,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 08:42:11,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:42:11,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 08:42:11,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 08:42:11,642 INFO L87 Difference]: Start difference. First operand 145 states and 220 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:42:14,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:42:14,085 INFO L93 Difference]: Finished difference Result 283 states and 427 transitions. [2021-10-28 08:42:14,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 08:42:14,086 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-10-28 08:42:14,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:42:14,087 INFO L225 Difference]: With dead ends: 283 [2021-10-28 08:42:14,087 INFO L226 Difference]: Without dead ends: 159 [2021-10-28 08:42:14,088 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 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 08:42:14,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-10-28 08:42:14,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 145. [2021-10-28 08:42:14,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.5208333333333333) internal successors, (219), 144 states have internal predecessors, (219), 0 states have call successors, (0), 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 08:42:14,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 219 transitions. [2021-10-28 08:42:14,099 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 219 transitions. Word has length 61 [2021-10-28 08:42:14,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:42:14,100 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 219 transitions. [2021-10-28 08:42:14,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:42:14,101 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 219 transitions. [2021-10-28 08:42:14,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-28 08:42:14,104 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:42:14,104 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:42:14,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 08:42:14,105 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:42:14,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:42:14,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1212742610, now seen corresponding path program 1 times [2021-10-28 08:42:14,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:42:14,106 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691798536] [2021-10-28 08:42:14,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:42:14,107 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:42:14,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:42:14,202 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:42:14,203 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:42:14,203 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691798536] [2021-10-28 08:42:14,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691798536] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:42:14,204 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:42:14,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 08:42:14,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705379460] [2021-10-28 08:42:14,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 08:42:14,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:42:14,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 08:42:14,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 08:42:14,207 INFO L87 Difference]: Start difference. First operand 145 states and 219 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:42:16,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:42:16,615 INFO L93 Difference]: Finished difference Result 282 states and 425 transitions. [2021-10-28 08:42:16,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 08:42:16,616 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-10-28 08:42:16,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:42:16,618 INFO L225 Difference]: With dead ends: 282 [2021-10-28 08:42:16,618 INFO L226 Difference]: Without dead ends: 158 [2021-10-28 08:42:16,618 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 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 08:42:16,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-10-28 08:42:16,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 145. [2021-10-28 08:42:16,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.5138888888888888) internal successors, (218), 144 states have internal predecessors, (218), 0 states have call successors, (0), 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 08:42:16,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 218 transitions. [2021-10-28 08:42:16,627 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 218 transitions. Word has length 62 [2021-10-28 08:42:16,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:42:16,628 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 218 transitions. [2021-10-28 08:42:16,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:42:16,628 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 218 transitions. [2021-10-28 08:42:16,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-28 08:42:16,641 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:42:16,641 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:42:16,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-28 08:42:16,642 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:42:16,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:42:16,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1421272766, now seen corresponding path program 1 times [2021-10-28 08:42:16,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:42:16,643 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778147409] [2021-10-28 08:42:16,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:42:16,644 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:42:16,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:42:16,773 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:42:16,773 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:42:16,774 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778147409] [2021-10-28 08:42:16,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778147409] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:42:16,774 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:42:16,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 08:42:16,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787393034] [2021-10-28 08:42:16,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 08:42:16,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:42:16,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 08:42:16,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 08:42:16,781 INFO L87 Difference]: Start difference. First operand 145 states and 218 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:42:19,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:42:19,096 INFO L93 Difference]: Finished difference Result 282 states and 424 transitions. [2021-10-28 08:42:19,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 08:42:19,096 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-10-28 08:42:19,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:42:19,098 INFO L225 Difference]: With dead ends: 282 [2021-10-28 08:42:19,098 INFO L226 Difference]: Without dead ends: 158 [2021-10-28 08:42:19,099 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 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 08:42:19,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-10-28 08:42:19,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 145. [2021-10-28 08:42:19,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.5069444444444444) internal successors, (217), 144 states have internal predecessors, (217), 0 states have call successors, (0), 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 08:42:19,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 217 transitions. [2021-10-28 08:42:19,106 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 217 transitions. Word has length 62 [2021-10-28 08:42:19,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:42:19,106 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 217 transitions. [2021-10-28 08:42:19,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:42:19,107 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 217 transitions. [2021-10-28 08:42:19,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-10-28 08:42:19,108 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:42:19,108 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:42:19,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-28 08:42:19,108 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:42:19,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:42:19,109 INFO L85 PathProgramCache]: Analyzing trace with hash 409565242, now seen corresponding path program 1 times [2021-10-28 08:42:19,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:42:19,110 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286571766] [2021-10-28 08:42:19,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:42:19,110 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:42:19,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:42:19,188 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:42:19,188 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:42:19,189 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286571766] [2021-10-28 08:42:19,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286571766] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:42:19,189 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:42:19,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 08:42:19,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138467310] [2021-10-28 08:42:19,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 08:42:19,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:42:19,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 08:42:19,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 08:42:19,192 INFO L87 Difference]: Start difference. First operand 145 states and 217 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:42:21,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:42:21,559 INFO L93 Difference]: Finished difference Result 282 states and 423 transitions. [2021-10-28 08:42:21,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 08:42:21,560 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-10-28 08:42:21,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:42:21,561 INFO L225 Difference]: With dead ends: 282 [2021-10-28 08:42:21,561 INFO L226 Difference]: Without dead ends: 158 [2021-10-28 08:42:21,562 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 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 08:42:21,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-10-28 08:42:21,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 145. [2021-10-28 08:42:21,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.5) internal successors, (216), 144 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:42:21,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 216 transitions. [2021-10-28 08:42:21,568 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 216 transitions. Word has length 63 [2021-10-28 08:42:21,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:42:21,568 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 216 transitions. [2021-10-28 08:42:21,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:42:21,569 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 216 transitions. [2021-10-28 08:42:21,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-10-28 08:42:21,570 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:42:21,570 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:42:21,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-28 08:42:21,571 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:42:21,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:42:21,571 INFO L85 PathProgramCache]: Analyzing trace with hash -682574659, now seen corresponding path program 1 times [2021-10-28 08:42:21,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:42:21,572 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611611346] [2021-10-28 08:42:21,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:42:21,572 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:42:21,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:42:21,643 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:42:21,643 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:42:21,643 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611611346] [2021-10-28 08:42:21,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611611346] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:42:21,644 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:42:21,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 08:42:21,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702592939] [2021-10-28 08:42:21,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 08:42:21,645 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:42:21,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 08:42:21,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 08:42:21,646 INFO L87 Difference]: Start difference. First operand 145 states and 216 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:42:23,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:42:23,988 INFO L93 Difference]: Finished difference Result 312 states and 471 transitions. [2021-10-28 08:42:23,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 08:42:23,989 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-10-28 08:42:23,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:42:23,990 INFO L225 Difference]: With dead ends: 312 [2021-10-28 08:42:23,991 INFO L226 Difference]: Without dead ends: 188 [2021-10-28 08:42:23,991 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 08:42:23,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2021-10-28 08:42:23,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 167. [2021-10-28 08:42:23,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 166 states have (on average 1.5301204819277108) internal successors, (254), 166 states have internal predecessors, (254), 0 states have call successors, (0), 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 08:42:23,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 254 transitions. [2021-10-28 08:42:23,999 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 254 transitions. Word has length 64 [2021-10-28 08:42:23,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:42:24,000 INFO L470 AbstractCegarLoop]: Abstraction has 167 states and 254 transitions. [2021-10-28 08:42:24,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:42:24,000 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 254 transitions. [2021-10-28 08:42:24,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-10-28 08:42:24,002 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:42:24,002 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:42:24,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-28 08:42:24,003 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:42:24,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:42:24,003 INFO L85 PathProgramCache]: Analyzing trace with hash -2091297575, now seen corresponding path program 1 times [2021-10-28 08:42:24,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:42:24,004 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777673328] [2021-10-28 08:42:24,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:42:24,004 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:42:24,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:42:24,137 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:42:24,137 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:42:24,138 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777673328] [2021-10-28 08:42:24,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777673328] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:42:24,142 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:42:24,142 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 08:42:24,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007440378] [2021-10-28 08:42:24,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 08:42:24,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:42:24,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 08:42:24,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 08:42:24,144 INFO L87 Difference]: Start difference. First operand 167 states and 254 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:42:26,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:42:26,548 INFO L93 Difference]: Finished difference Result 326 states and 498 transitions. [2021-10-28 08:42:26,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 08:42:26,549 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-10-28 08:42:26,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:42:26,551 INFO L225 Difference]: With dead ends: 326 [2021-10-28 08:42:26,551 INFO L226 Difference]: Without dead ends: 180 [2021-10-28 08:42:26,552 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 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 08:42:26,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2021-10-28 08:42:26,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 167. [2021-10-28 08:42:26,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 166 states have (on average 1.5240963855421688) internal successors, (253), 166 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:42:26,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 253 transitions. [2021-10-28 08:42:26,561 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 253 transitions. Word has length 64 [2021-10-28 08:42:26,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:42:26,561 INFO L470 AbstractCegarLoop]: Abstraction has 167 states and 253 transitions. [2021-10-28 08:42:26,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:42:26,561 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 253 transitions. [2021-10-28 08:42:26,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-10-28 08:42:26,562 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:42:26,563 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:42:26,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-28 08:42:26,563 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:42:26,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:42:26,564 INFO L85 PathProgramCache]: Analyzing trace with hash 783633077, now seen corresponding path program 1 times [2021-10-28 08:42:26,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:42:26,564 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676814290] [2021-10-28 08:42:26,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:42:26,565 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:42:26,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:42:26,651 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:42:26,651 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:42:26,651 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676814290] [2021-10-28 08:42:26,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676814290] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:42:26,652 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:42:26,652 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 08:42:26,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321397890] [2021-10-28 08:42:26,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 08:42:26,653 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:42:26,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 08:42:26,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 08:42:26,654 INFO L87 Difference]: Start difference. First operand 167 states and 253 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:42:28,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:42:28,991 INFO L93 Difference]: Finished difference Result 316 states and 484 transitions. [2021-10-28 08:42:28,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 08:42:28,992 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-10-28 08:42:28,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:42:28,993 INFO L225 Difference]: With dead ends: 316 [2021-10-28 08:42:28,994 INFO L226 Difference]: Without dead ends: 170 [2021-10-28 08:42:28,994 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 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 08:42:28,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-10-28 08:42:28,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 167. [2021-10-28 08:42:28,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 166 states have (on average 1.5180722891566265) internal successors, (252), 166 states have internal predecessors, (252), 0 states have call successors, (0), 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 08:42:29,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 252 transitions. [2021-10-28 08:42:29,001 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 252 transitions. Word has length 65 [2021-10-28 08:42:29,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:42:29,001 INFO L470 AbstractCegarLoop]: Abstraction has 167 states and 252 transitions. [2021-10-28 08:42:29,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:42:29,001 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 252 transitions. [2021-10-28 08:42:29,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-10-28 08:42:29,002 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:42:29,002 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:42:29,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-28 08:42:29,002 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:42:29,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:42:29,003 INFO L85 PathProgramCache]: Analyzing trace with hash 59755448, now seen corresponding path program 1 times [2021-10-28 08:42:29,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:42:29,003 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087787186] [2021-10-28 08:42:29,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:42:29,003 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:42:29,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:42:29,101 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:42:29,101 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:42:29,101 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087787186] [2021-10-28 08:42:29,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087787186] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:42:29,102 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:42:29,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 08:42:29,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091454561] [2021-10-28 08:42:29,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 08:42:29,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:42:29,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 08:42:29,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 08:42:29,104 INFO L87 Difference]: Start difference. First operand 167 states and 252 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:42:31,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:42:31,427 INFO L93 Difference]: Finished difference Result 334 states and 506 transitions. [2021-10-28 08:42:31,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 08:42:31,428 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-10-28 08:42:31,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:42:31,429 INFO L225 Difference]: With dead ends: 334 [2021-10-28 08:42:31,430 INFO L226 Difference]: Without dead ends: 188 [2021-10-28 08:42:31,430 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 08:42:31,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2021-10-28 08:42:31,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 167. [2021-10-28 08:42:31,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 166 states have (on average 1.5120481927710843) internal successors, (251), 166 states have internal predecessors, (251), 0 states have call successors, (0), 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 08:42:31,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 251 transitions. [2021-10-28 08:42:31,438 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 251 transitions. Word has length 77 [2021-10-28 08:42:31,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:42:31,438 INFO L470 AbstractCegarLoop]: Abstraction has 167 states and 251 transitions. [2021-10-28 08:42:31,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:42:31,439 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 251 transitions. [2021-10-28 08:42:31,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-10-28 08:42:31,440 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:42:31,440 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:42:31,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-28 08:42:31,440 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:42:31,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:42:31,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1497647890, now seen corresponding path program 1 times [2021-10-28 08:42:31,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:42:31,441 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534534159] [2021-10-28 08:42:31,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:42:31,442 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:42:31,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:42:31,531 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 08:42:31,531 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:42:31,532 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534534159] [2021-10-28 08:42:31,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534534159] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:42:31,532 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:42:31,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 08:42:31,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226377258] [2021-10-28 08:42:31,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 08:42:31,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:42:31,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 08:42:31,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 08:42:31,535 INFO L87 Difference]: Start difference. First operand 167 states and 251 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:42:33,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:42:33,877 INFO L93 Difference]: Finished difference Result 333 states and 503 transitions. [2021-10-28 08:42:33,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 08:42:33,880 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-10-28 08:42:33,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:42:33,881 INFO L225 Difference]: With dead ends: 333 [2021-10-28 08:42:33,882 INFO L226 Difference]: Without dead ends: 187 [2021-10-28 08:42:33,882 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 08:42:33,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2021-10-28 08:42:33,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 167. [2021-10-28 08:42:33,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 166 states have (on average 1.5060240963855422) internal successors, (250), 166 states have internal predecessors, (250), 0 states have call successors, (0), 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 08:42:33,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 250 transitions. [2021-10-28 08:42:33,888 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 250 transitions. Word has length 78 [2021-10-28 08:42:33,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:42:33,889 INFO L470 AbstractCegarLoop]: Abstraction has 167 states and 250 transitions. [2021-10-28 08:42:33,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:42:33,889 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 250 transitions. [2021-10-28 08:42:33,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-10-28 08:42:33,890 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:42:33,890 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:42:33,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-28 08:42:33,891 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:42:33,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:42:33,891 INFO L85 PathProgramCache]: Analyzing trace with hash -652209494, now seen corresponding path program 1 times [2021-10-28 08:42:33,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:42:33,892 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104592181] [2021-10-28 08:42:33,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:42:33,892 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:42:33,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:42:33,954 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:42:33,954 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:42:33,954 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104592181] [2021-10-28 08:42:33,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104592181] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:42:33,955 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:42:33,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 08:42:33,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485922768] [2021-10-28 08:42:33,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 08:42:33,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:42:33,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 08:42:33,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 08:42:33,957 INFO L87 Difference]: Start difference. First operand 167 states and 250 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:42:36,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:42:36,283 INFO L93 Difference]: Finished difference Result 331 states and 499 transitions. [2021-10-28 08:42:36,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 08:42:36,284 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-10-28 08:42:36,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:42:36,286 INFO L225 Difference]: With dead ends: 331 [2021-10-28 08:42:36,286 INFO L226 Difference]: Without dead ends: 185 [2021-10-28 08:42:36,286 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 08:42:36,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2021-10-28 08:42:36,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 167. [2021-10-28 08:42:36,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 166 states have (on average 1.5) internal successors, (249), 166 states have internal predecessors, (249), 0 states have call successors, (0), 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 08:42:36,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 249 transitions. [2021-10-28 08:42:36,293 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 249 transitions. Word has length 78 [2021-10-28 08:42:36,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:42:36,293 INFO L470 AbstractCegarLoop]: Abstraction has 167 states and 249 transitions. [2021-10-28 08:42:36,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:42:36,294 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 249 transitions. [2021-10-28 08:42:36,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-10-28 08:42:36,295 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:42:36,295 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:42:36,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-28 08:42:36,296 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:42:36,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:42:36,296 INFO L85 PathProgramCache]: Analyzing trace with hash 768448007, now seen corresponding path program 1 times [2021-10-28 08:42:36,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:42:36,297 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171518543] [2021-10-28 08:42:36,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:42:36,297 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:42:36,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:42:36,358 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:42:36,359 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:42:36,359 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171518543] [2021-10-28 08:42:36,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171518543] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:42:36,359 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:42:36,360 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 08:42:36,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051693025] [2021-10-28 08:42:36,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 08:42:36,360 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:42:36,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 08:42:36,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 08:42:36,362 INFO L87 Difference]: Start difference. First operand 167 states and 249 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:42:38,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:42:38,697 INFO L93 Difference]: Finished difference Result 330 states and 496 transitions. [2021-10-28 08:42:38,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 08:42:38,698 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-10-28 08:42:38,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:42:38,700 INFO L225 Difference]: With dead ends: 330 [2021-10-28 08:42:38,700 INFO L226 Difference]: Without dead ends: 184 [2021-10-28 08:42:38,701 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 08:42:38,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2021-10-28 08:42:38,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 167. [2021-10-28 08:42:38,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 166 states have (on average 1.4939759036144578) internal successors, (248), 166 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:42:38,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 248 transitions. [2021-10-28 08:42:38,708 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 248 transitions. Word has length 79 [2021-10-28 08:42:38,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:42:38,708 INFO L470 AbstractCegarLoop]: Abstraction has 167 states and 248 transitions. [2021-10-28 08:42:38,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:42:38,709 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 248 transitions. [2021-10-28 08:42:38,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-10-28 08:42:38,710 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:42:38,710 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:42:38,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-10-28 08:42:38,711 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:42:38,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:42:38,711 INFO L85 PathProgramCache]: Analyzing trace with hash 976978163, now seen corresponding path program 1 times [2021-10-28 08:42:38,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:42:38,712 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066241747] [2021-10-28 08:42:38,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:42:38,712 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:42:38,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:42:38,787 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:42:38,787 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:42:38,787 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066241747] [2021-10-28 08:42:38,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066241747] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:42:38,788 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:42:38,788 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 08:42:38,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332257298] [2021-10-28 08:42:38,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 08:42:38,789 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:42:38,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 08:42:38,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 08:42:38,790 INFO L87 Difference]: Start difference. First operand 167 states and 248 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:42:41,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:42:41,035 INFO L93 Difference]: Finished difference Result 330 states and 494 transitions. [2021-10-28 08:42:41,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 08:42:41,036 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-10-28 08:42:41,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:42:41,039 INFO L225 Difference]: With dead ends: 330 [2021-10-28 08:42:41,040 INFO L226 Difference]: Without dead ends: 184 [2021-10-28 08:42:41,040 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 08:42:41,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2021-10-28 08:42:41,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 167. [2021-10-28 08:42:41,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 166 states have (on average 1.4879518072289157) internal successors, (247), 166 states have internal predecessors, (247), 0 states have call successors, (0), 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 08:42:41,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 247 transitions. [2021-10-28 08:42:41,046 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 247 transitions. Word has length 79 [2021-10-28 08:42:41,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:42:41,047 INFO L470 AbstractCegarLoop]: Abstraction has 167 states and 247 transitions. [2021-10-28 08:42:41,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:42:41,047 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 247 transitions. [2021-10-28 08:42:41,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-10-28 08:42:41,048 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:42:41,048 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:42:41,049 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-10-28 08:42:41,049 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:42:41,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:42:41,049 INFO L85 PathProgramCache]: Analyzing trace with hash -478665563, now seen corresponding path program 1 times [2021-10-28 08:42:41,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:42:41,050 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324844640] [2021-10-28 08:42:41,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:42:41,050 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:42:41,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:42:41,105 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:42:41,105 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:42:41,105 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324844640] [2021-10-28 08:42:41,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324844640] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:42:41,105 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:42:41,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 08:42:41,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988993616] [2021-10-28 08:42:41,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 08:42:41,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:42:41,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 08:42:41,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 08:42:41,107 INFO L87 Difference]: Start difference. First operand 167 states and 247 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:42:43,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:42:43,391 INFO L93 Difference]: Finished difference Result 330 states and 492 transitions. [2021-10-28 08:42:43,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 08:42:43,392 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-10-28 08:42:43,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:42:43,394 INFO L225 Difference]: With dead ends: 330 [2021-10-28 08:42:43,394 INFO L226 Difference]: Without dead ends: 184 [2021-10-28 08:42:43,395 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 08:42:43,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2021-10-28 08:42:43,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 167. [2021-10-28 08:42:43,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 166 states have (on average 1.4819277108433735) internal successors, (246), 166 states have internal predecessors, (246), 0 states have call successors, (0), 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 08:42:43,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 246 transitions. [2021-10-28 08:42:43,402 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 246 transitions. Word has length 80 [2021-10-28 08:42:43,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:42:43,402 INFO L470 AbstractCegarLoop]: Abstraction has 167 states and 246 transitions. [2021-10-28 08:42:43,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:42:43,403 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 246 transitions. [2021-10-28 08:42:43,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-10-28 08:42:43,404 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:42:43,404 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:42:43,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-10-28 08:42:43,404 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:42:43,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:42:43,405 INFO L85 PathProgramCache]: Analyzing trace with hash 438318542, now seen corresponding path program 1 times [2021-10-28 08:42:43,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:42:43,405 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014149210] [2021-10-28 08:42:43,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:42:43,406 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:42:43,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:42:43,463 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:42:43,463 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:42:43,463 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014149210] [2021-10-28 08:42:43,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014149210] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:42:43,464 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:42:43,464 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 08:42:43,464 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171792342] [2021-10-28 08:42:43,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 08:42:43,465 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:42:43,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 08:42:43,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 08:42:43,466 INFO L87 Difference]: Start difference. First operand 167 states and 246 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 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 08:42:45,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:42:45,696 INFO L93 Difference]: Finished difference Result 330 states and 490 transitions. [2021-10-28 08:42:45,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 08:42:45,696 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 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 81 [2021-10-28 08:42:45,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:42:45,697 INFO L225 Difference]: With dead ends: 330 [2021-10-28 08:42:45,697 INFO L226 Difference]: Without dead ends: 184 [2021-10-28 08:42:45,698 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 08:42:45,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2021-10-28 08:42:45,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 167. [2021-10-28 08:42:45,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 166 states have (on average 1.4759036144578312) internal successors, (245), 166 states have internal predecessors, (245), 0 states have call successors, (0), 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 08:42:45,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 245 transitions. [2021-10-28 08:42:45,725 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 245 transitions. Word has length 81 [2021-10-28 08:42:45,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:42:45,726 INFO L470 AbstractCegarLoop]: Abstraction has 167 states and 245 transitions. [2021-10-28 08:42:45,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 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 08:42:45,726 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 245 transitions. [2021-10-28 08:42:45,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-10-28 08:42:45,727 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:42:45,727 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:42:45,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-10-28 08:42:45,728 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:42:45,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:42:45,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1892321376, now seen corresponding path program 1 times [2021-10-28 08:42:45,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:42:45,729 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399388798] [2021-10-28 08:42:45,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:42:45,729 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:42:45,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:42:45,786 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:42:45,786 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:42:45,786 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399388798] [2021-10-28 08:42:45,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399388798] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:42:45,786 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:42:45,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 08:42:45,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319881485] [2021-10-28 08:42:45,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 08:42:45,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:42:45,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 08:42:45,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 08:42:45,788 INFO L87 Difference]: Start difference. First operand 167 states and 245 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:42:48,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:42:48,026 INFO L93 Difference]: Finished difference Result 320 states and 475 transitions. [2021-10-28 08:42:48,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 08:42:48,026 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-10-28 08:42:48,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:42:48,027 INFO L225 Difference]: With dead ends: 320 [2021-10-28 08:42:48,028 INFO L226 Difference]: Without dead ends: 174 [2021-10-28 08:42:48,028 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 08:42:48,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2021-10-28 08:42:48,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 167. [2021-10-28 08:42:48,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 166 states have (on average 1.4698795180722892) internal successors, (244), 166 states have internal predecessors, (244), 0 states have call successors, (0), 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 08:42:48,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 244 transitions. [2021-10-28 08:42:48,034 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 244 transitions. Word has length 82 [2021-10-28 08:42:48,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:42:48,034 INFO L470 AbstractCegarLoop]: Abstraction has 167 states and 244 transitions. [2021-10-28 08:42:48,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:42:48,035 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 244 transitions. [2021-10-28 08:42:48,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-10-28 08:42:48,036 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:42:48,036 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:42:48,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-10-28 08:42:48,036 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:42:48,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:42:48,037 INFO L85 PathProgramCache]: Analyzing trace with hash 485035231, now seen corresponding path program 1 times [2021-10-28 08:42:48,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:42:48,037 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970942683] [2021-10-28 08:42:48,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:42:48,038 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:42:48,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:42:48,104 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-28 08:42:48,104 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:42:48,105 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970942683] [2021-10-28 08:42:48,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970942683] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:42:48,105 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:42:48,105 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 08:42:48,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817456132] [2021-10-28 08:42:48,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 08:42:48,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:42:48,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 08:42:48,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 08:42:48,107 INFO L87 Difference]: Start difference. First operand 167 states and 244 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 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 08:42:50,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:42:50,463 INFO L93 Difference]: Finished difference Result 363 states and 539 transitions. [2021-10-28 08:42:50,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 08:42:50,464 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 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 86 [2021-10-28 08:42:50,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:42:50,466 INFO L225 Difference]: With dead ends: 363 [2021-10-28 08:42:50,466 INFO L226 Difference]: Without dead ends: 217 [2021-10-28 08:42:50,466 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 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 08:42:50,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-10-28 08:42:50,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 192. [2021-10-28 08:42:50,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 191 states have (on average 1.5026178010471205) internal successors, (287), 191 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:42:50,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 287 transitions. [2021-10-28 08:42:50,473 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 287 transitions. Word has length 86 [2021-10-28 08:42:50,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:42:50,473 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 287 transitions. [2021-10-28 08:42:50,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 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 08:42:50,473 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 287 transitions. [2021-10-28 08:42:50,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-10-28 08:42:50,475 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:42:50,475 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:42:50,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-10-28 08:42:50,475 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:42:50,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:42:50,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1382428509, now seen corresponding path program 1 times [2021-10-28 08:42:50,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:42:50,476 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184079532] [2021-10-28 08:42:50,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:42:50,476 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:42:50,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:42:50,549 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-28 08:42:50,549 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:42:50,549 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184079532] [2021-10-28 08:42:50,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184079532] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:42:50,550 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:42:50,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 08:42:50,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491487060] [2021-10-28 08:42:50,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 08:42:50,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:42:50,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 08:42:50,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 08:42:50,552 INFO L87 Difference]: Start difference. First operand 192 states and 287 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 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 08:42:53,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:42:53,031 INFO L93 Difference]: Finished difference Result 459 states and 698 transitions. [2021-10-28 08:42:53,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 08:42:53,032 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 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 86 [2021-10-28 08:42:53,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:42:53,035 INFO L225 Difference]: With dead ends: 459 [2021-10-28 08:42:53,035 INFO L226 Difference]: Without dead ends: 288 [2021-10-28 08:42:53,035 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 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 08:42:53,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2021-10-28 08:42:53,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 234. [2021-10-28 08:42:53,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 233 states have (on average 1.5622317596566524) internal successors, (364), 233 states have internal predecessors, (364), 0 states have call successors, (0), 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 08:42:53,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 364 transitions. [2021-10-28 08:42:53,044 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 364 transitions. Word has length 86 [2021-10-28 08:42:53,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:42:53,047 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 364 transitions. [2021-10-28 08:42:53,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 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 08:42:53,047 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 364 transitions. [2021-10-28 08:42:53,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-10-28 08:42:53,048 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:42:53,049 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:42:53,049 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-10-28 08:42:53,049 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:42:53,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:42:53,050 INFO L85 PathProgramCache]: Analyzing trace with hash -479313194, now seen corresponding path program 1 times [2021-10-28 08:42:53,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:42:53,050 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618457853] [2021-10-28 08:42:53,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:42:53,050 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:42:53,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:42:53,162 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-28 08:42:53,163 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:42:53,163 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618457853] [2021-10-28 08:42:53,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618457853] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:42:53,163 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:42:53,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 08:42:53,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167597548] [2021-10-28 08:42:53,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 08:42:53,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:42:53,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 08:42:53,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 08:42:53,165 INFO L87 Difference]: Start difference. First operand 234 states and 364 transitions. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:42:55,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:42:55,459 INFO L93 Difference]: Finished difference Result 472 states and 735 transitions. [2021-10-28 08:42:55,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 08:42:55,460 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2021-10-28 08:42:55,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:42:55,461 INFO L225 Difference]: With dead ends: 472 [2021-10-28 08:42:55,461 INFO L226 Difference]: Without dead ends: 259 [2021-10-28 08:42:55,462 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 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 08:42:55,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2021-10-28 08:42:55,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 234. [2021-10-28 08:42:55,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 233 states have (on average 1.55793991416309) internal successors, (363), 233 states have internal predecessors, (363), 0 states have call successors, (0), 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 08:42:55,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 363 transitions. [2021-10-28 08:42:55,470 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 363 transitions. Word has length 99 [2021-10-28 08:42:55,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:42:55,470 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 363 transitions. [2021-10-28 08:42:55,470 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:42:55,470 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 363 transitions. [2021-10-28 08:42:55,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-10-28 08:42:55,472 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:42:55,472 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:42:55,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-10-28 08:42:55,472 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:42:55,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:42:55,473 INFO L85 PathProgramCache]: Analyzing trace with hash -519987944, now seen corresponding path program 1 times [2021-10-28 08:42:55,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:42:55,473 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584005991] [2021-10-28 08:42:55,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:42:55,474 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:42:55,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:42:55,537 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-28 08:42:55,538 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:42:55,538 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584005991] [2021-10-28 08:42:55,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584005991] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:42:55,538 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:42:55,538 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 08:42:55,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080672150] [2021-10-28 08:42:55,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 08:42:55,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:42:55,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 08:42:55,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 08:42:55,540 INFO L87 Difference]: Start difference. First operand 234 states and 363 transitions. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:42:58,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:42:58,048 INFO L93 Difference]: Finished difference Result 501 states and 772 transitions. [2021-10-28 08:42:58,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 08:42:58,049 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2021-10-28 08:42:58,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:42:58,050 INFO L225 Difference]: With dead ends: 501 [2021-10-28 08:42:58,050 INFO L226 Difference]: Without dead ends: 288 [2021-10-28 08:42:58,051 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 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 08:42:58,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2021-10-28 08:42:58,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 234. [2021-10-28 08:42:58,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 233 states have (on average 1.553648068669528) internal successors, (362), 233 states have internal predecessors, (362), 0 states have call successors, (0), 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 08:42:58,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 362 transitions. [2021-10-28 08:42:58,059 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 362 transitions. Word has length 99 [2021-10-28 08:42:58,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:42:58,059 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 362 transitions. [2021-10-28 08:42:58,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:42:58,060 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 362 transitions. [2021-10-28 08:42:58,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-10-28 08:42:58,061 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:42:58,061 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:42:58,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-10-28 08:42:58,062 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:42:58,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:42:58,062 INFO L85 PathProgramCache]: Analyzing trace with hash -1028906608, now seen corresponding path program 1 times [2021-10-28 08:42:58,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:42:58,063 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132611655] [2021-10-28 08:42:58,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:42:58,063 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:42:58,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:42:58,151 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-28 08:42:58,151 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:42:58,152 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132611655] [2021-10-28 08:42:58,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132611655] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:42:58,152 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:42:58,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 08:42:58,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020197800] [2021-10-28 08:42:58,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 08:42:58,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:42:58,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 08:42:58,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 08:42:58,154 INFO L87 Difference]: Start difference. First operand 234 states and 362 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:43:00,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:43:00,499 INFO L93 Difference]: Finished difference Result 471 states and 730 transitions. [2021-10-28 08:43:00,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 08:43:00,499 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-10-28 08:43:00,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:43:00,501 INFO L225 Difference]: With dead ends: 471 [2021-10-28 08:43:00,501 INFO L226 Difference]: Without dead ends: 258 [2021-10-28 08:43:00,502 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 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 08:43:00,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2021-10-28 08:43:00,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 234. [2021-10-28 08:43:00,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 233 states have (on average 1.5493562231759657) internal successors, (361), 233 states have internal predecessors, (361), 0 states have call successors, (0), 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 08:43:00,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 361 transitions. [2021-10-28 08:43:00,510 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 361 transitions. Word has length 100 [2021-10-28 08:43:00,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:43:00,510 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 361 transitions. [2021-10-28 08:43:00,510 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:43:00,510 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 361 transitions. [2021-10-28 08:43:00,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-10-28 08:43:00,512 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:43:00,512 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:43:00,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-10-28 08:43:00,513 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:43:00,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:43:00,513 INFO L85 PathProgramCache]: Analyzing trace with hash -183468212, now seen corresponding path program 1 times [2021-10-28 08:43:00,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:43:00,513 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118427674] [2021-10-28 08:43:00,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:43:00,514 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:43:00,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:43:00,576 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-28 08:43:00,576 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:43:00,577 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118427674] [2021-10-28 08:43:00,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118427674] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:43:00,577 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:43:00,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 08:43:00,577 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097308375] [2021-10-28 08:43:00,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 08:43:00,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:43:00,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 08:43:00,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 08:43:00,579 INFO L87 Difference]: Start difference. First operand 234 states and 361 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:43:02,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:43:02,847 INFO L93 Difference]: Finished difference Result 469 states and 726 transitions. [2021-10-28 08:43:02,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 08:43:02,848 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-10-28 08:43:02,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:43:02,849 INFO L225 Difference]: With dead ends: 469 [2021-10-28 08:43:02,849 INFO L226 Difference]: Without dead ends: 256 [2021-10-28 08:43:02,850 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 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 08:43:02,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2021-10-28 08:43:02,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 234. [2021-10-28 08:43:02,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 233 states have (on average 1.5450643776824033) internal successors, (360), 233 states have internal predecessors, (360), 0 states have call successors, (0), 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 08:43:02,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 360 transitions. [2021-10-28 08:43:02,857 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 360 transitions. Word has length 100 [2021-10-28 08:43:02,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:43:02,858 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 360 transitions. [2021-10-28 08:43:02,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:43:02,858 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 360 transitions. [2021-10-28 08:43:02,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-10-28 08:43:02,859 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:43:02,860 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:43:02,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-10-28 08:43:02,860 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:43:02,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:43:02,861 INFO L85 PathProgramCache]: Analyzing trace with hash 2005143438, now seen corresponding path program 1 times [2021-10-28 08:43:02,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:43:02,861 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336084930] [2021-10-28 08:43:02,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:43:02,862 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:43:02,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:43:02,924 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-28 08:43:02,925 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:43:02,925 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336084930] [2021-10-28 08:43:02,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336084930] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:43:02,925 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:43:02,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 08:43:02,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906721720] [2021-10-28 08:43:02,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 08:43:02,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:43:02,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 08:43:02,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 08:43:02,927 INFO L87 Difference]: Start difference. First operand 234 states and 360 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:43:05,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:43:05,338 INFO L93 Difference]: Finished difference Result 500 states and 765 transitions. [2021-10-28 08:43:05,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 08:43:05,338 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-10-28 08:43:05,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:43:05,340 INFO L225 Difference]: With dead ends: 500 [2021-10-28 08:43:05,340 INFO L226 Difference]: Without dead ends: 287 [2021-10-28 08:43:05,341 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 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 08:43:05,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-10-28 08:43:05,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 234. [2021-10-28 08:43:05,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 233 states have (on average 1.5407725321888412) internal successors, (359), 233 states have internal predecessors, (359), 0 states have call successors, (0), 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 08:43:05,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 359 transitions. [2021-10-28 08:43:05,348 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 359 transitions. Word has length 100 [2021-10-28 08:43:05,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:43:05,349 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 359 transitions. [2021-10-28 08:43:05,349 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:43:05,349 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 359 transitions. [2021-10-28 08:43:05,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-10-28 08:43:05,350 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:43:05,351 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:43:05,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-10-28 08:43:05,351 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:43:05,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:43:05,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1444385462, now seen corresponding path program 1 times [2021-10-28 08:43:05,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:43:05,352 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861597938] [2021-10-28 08:43:05,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:43:05,352 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:43:05,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:43:05,416 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-28 08:43:05,416 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:43:05,416 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861597938] [2021-10-28 08:43:05,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861597938] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:43:05,417 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:43:05,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 08:43:05,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534307195] [2021-10-28 08:43:05,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 08:43:05,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:43:05,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 08:43:05,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 08:43:05,419 INFO L87 Difference]: Start difference. First operand 234 states and 359 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:43:07,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:43:07,808 INFO L93 Difference]: Finished difference Result 498 states and 761 transitions. [2021-10-28 08:43:07,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 08:43:07,808 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-10-28 08:43:07,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:43:07,811 INFO L225 Difference]: With dead ends: 498 [2021-10-28 08:43:07,811 INFO L226 Difference]: Without dead ends: 285 [2021-10-28 08:43:07,811 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 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 08:43:07,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2021-10-28 08:43:07,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 234. [2021-10-28 08:43:07,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 233 states have (on average 1.536480686695279) internal successors, (358), 233 states have internal predecessors, (358), 0 states have call successors, (0), 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 08:43:07,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 358 transitions. [2021-10-28 08:43:07,819 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 358 transitions. Word has length 100 [2021-10-28 08:43:07,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:43:07,820 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 358 transitions. [2021-10-28 08:43:07,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:43:07,820 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 358 transitions. [2021-10-28 08:43:07,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-10-28 08:43:07,821 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:43:07,822 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:43:07,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-10-28 08:43:07,822 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:43:07,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:43:07,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1880441435, now seen corresponding path program 1 times [2021-10-28 08:43:07,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:43:07,823 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502257065] [2021-10-28 08:43:07,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:43:07,824 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:43:07,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:43:07,892 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-28 08:43:07,892 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:43:07,892 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502257065] [2021-10-28 08:43:07,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502257065] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:43:07,892 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:43:07,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 08:43:07,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206723915] [2021-10-28 08:43:07,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 08:43:07,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:43:07,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 08:43:07,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 08:43:07,894 INFO L87 Difference]: Start difference. First operand 234 states and 358 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 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 08:43:10,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:43:10,174 INFO L93 Difference]: Finished difference Result 468 states and 719 transitions. [2021-10-28 08:43:10,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 08:43:10,174 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2021-10-28 08:43:10,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:43:10,176 INFO L225 Difference]: With dead ends: 468 [2021-10-28 08:43:10,176 INFO L226 Difference]: Without dead ends: 255 [2021-10-28 08:43:10,177 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 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 08:43:10,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2021-10-28 08:43:10,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 234. [2021-10-28 08:43:10,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 233 states have (on average 1.5321888412017168) internal successors, (357), 233 states have internal predecessors, (357), 0 states have call successors, (0), 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 08:43:10,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 357 transitions. [2021-10-28 08:43:10,185 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 357 transitions. Word has length 101 [2021-10-28 08:43:10,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:43:10,185 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 357 transitions. [2021-10-28 08:43:10,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 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 08:43:10,186 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 357 transitions. [2021-10-28 08:43:10,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-10-28 08:43:10,187 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:43:10,187 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:43:10,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-10-28 08:43:10,188 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:43:10,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:43:10,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1671911279, now seen corresponding path program 1 times [2021-10-28 08:43:10,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:43:10,189 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103024242] [2021-10-28 08:43:10,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:43:10,189 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:43:10,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:43:10,309 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-10-28 08:43:10,309 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:43:10,309 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103024242] [2021-10-28 08:43:10,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103024242] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:43:10,310 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:43:10,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 08:43:10,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122515266] [2021-10-28 08:43:10,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 08:43:10,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:43:10,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 08:43:10,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 08:43:10,312 INFO L87 Difference]: Start difference. First operand 234 states and 357 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 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 08:43:14,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:43:14,732 INFO L93 Difference]: Finished difference Result 468 states and 719 transitions. [2021-10-28 08:43:14,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 08:43:14,733 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2021-10-28 08:43:14,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:43:14,734 INFO L225 Difference]: With dead ends: 468 [2021-10-28 08:43:14,734 INFO L226 Difference]: Without dead ends: 255 [2021-10-28 08:43:14,735 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-28 08:43:14,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2021-10-28 08:43:14,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 254. [2021-10-28 08:43:14,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 253 states have (on average 1.5138339920948616) internal successors, (383), 253 states have internal predecessors, (383), 0 states have call successors, (0), 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 08:43:14,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 383 transitions. [2021-10-28 08:43:14,742 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 383 transitions. Word has length 101 [2021-10-28 08:43:14,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:43:14,743 INFO L470 AbstractCegarLoop]: Abstraction has 254 states and 383 transitions. [2021-10-28 08:43:14,743 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 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 08:43:14,743 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 383 transitions. [2021-10-28 08:43:14,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-10-28 08:43:14,745 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:43:14,745 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:43:14,745 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-10-28 08:43:14,745 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:43:14,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:43:14,746 INFO L85 PathProgramCache]: Analyzing trace with hash -129751462, now seen corresponding path program 1 times [2021-10-28 08:43:14,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:43:14,746 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088776647] [2021-10-28 08:43:14,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:43:14,747 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:43:14,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:43:14,812 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-28 08:43:14,812 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:43:14,812 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088776647] [2021-10-28 08:43:14,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088776647] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:43:14,813 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:43:14,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 08:43:14,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533203340] [2021-10-28 08:43:14,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 08:43:14,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:43:14,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 08:43:14,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 08:43:14,815 INFO L87 Difference]: Start difference. First operand 254 states and 383 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 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 08:43:17,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:43:17,172 INFO L93 Difference]: Finished difference Result 508 states and 768 transitions. [2021-10-28 08:43:17,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 08:43:17,172 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2021-10-28 08:43:17,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:43:17,174 INFO L225 Difference]: With dead ends: 508 [2021-10-28 08:43:17,174 INFO L226 Difference]: Without dead ends: 275 [2021-10-28 08:43:17,175 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 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 08:43:17,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2021-10-28 08:43:17,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 254. [2021-10-28 08:43:17,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 253 states have (on average 1.5098814229249011) internal successors, (382), 253 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:43:17,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 382 transitions. [2021-10-28 08:43:17,184 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 382 transitions. Word has length 102 [2021-10-28 08:43:17,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:43:17,185 INFO L470 AbstractCegarLoop]: Abstraction has 254 states and 382 transitions. [2021-10-28 08:43:17,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 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 08:43:17,185 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 382 transitions. [2021-10-28 08:43:17,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-10-28 08:43:17,186 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:43:17,187 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:43:17,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-10-28 08:43:17,187 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:43:17,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:43:17,188 INFO L85 PathProgramCache]: Analyzing trace with hash -690451240, now seen corresponding path program 1 times [2021-10-28 08:43:17,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:43:17,188 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766509847] [2021-10-28 08:43:17,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:43:17,189 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:43:17,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:43:17,281 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-28 08:43:17,282 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:43:17,282 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766509847] [2021-10-28 08:43:17,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766509847] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:43:17,282 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:43:17,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 08:43:17,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114316739] [2021-10-28 08:43:17,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 08:43:17,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:43:17,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 08:43:17,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 08:43:17,284 INFO L87 Difference]: Start difference. First operand 254 states and 382 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 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 08:43:19,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:43:19,755 INFO L93 Difference]: Finished difference Result 537 states and 805 transitions. [2021-10-28 08:43:19,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 08:43:19,756 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2021-10-28 08:43:19,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:43:19,758 INFO L225 Difference]: With dead ends: 537 [2021-10-28 08:43:19,758 INFO L226 Difference]: Without dead ends: 304 [2021-10-28 08:43:19,759 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 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 08:43:19,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2021-10-28 08:43:19,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 254. [2021-10-28 08:43:19,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 253 states have (on average 1.5059288537549407) internal successors, (381), 253 states have internal predecessors, (381), 0 states have call successors, (0), 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 08:43:19,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 381 transitions. [2021-10-28 08:43:19,768 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 381 transitions. Word has length 102 [2021-10-28 08:43:19,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:43:19,768 INFO L470 AbstractCegarLoop]: Abstraction has 254 states and 381 transitions. [2021-10-28 08:43:19,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 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 08:43:19,769 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 381 transitions. [2021-10-28 08:43:19,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-10-28 08:43:19,770 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:43:19,770 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:43:19,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-10-28 08:43:19,770 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:43:19,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:43:19,771 INFO L85 PathProgramCache]: Analyzing trace with hash -460987164, now seen corresponding path program 1 times [2021-10-28 08:43:19,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:43:19,771 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563980281] [2021-10-28 08:43:19,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:43:19,772 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:43:19,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:43:19,838 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-28 08:43:19,838 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:43:19,839 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563980281] [2021-10-28 08:43:19,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563980281] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:43:19,839 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:43:19,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 08:43:19,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655377570] [2021-10-28 08:43:19,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 08:43:19,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:43:19,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 08:43:19,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 08:43:19,841 INFO L87 Difference]: Start difference. First operand 254 states and 381 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 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 08:43:22,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:43:22,159 INFO L93 Difference]: Finished difference Result 508 states and 764 transitions. [2021-10-28 08:43:22,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 08:43:22,159 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2021-10-28 08:43:22,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:43:22,160 INFO L225 Difference]: With dead ends: 508 [2021-10-28 08:43:22,160 INFO L226 Difference]: Without dead ends: 275 [2021-10-28 08:43:22,161 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 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 08:43:22,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2021-10-28 08:43:22,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 254. [2021-10-28 08:43:22,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 253 states have (on average 1.5019762845849802) internal successors, (380), 253 states have internal predecessors, (380), 0 states have call successors, (0), 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 08:43:22,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 380 transitions. [2021-10-28 08:43:22,169 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 380 transitions. Word has length 103 [2021-10-28 08:43:22,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:43:22,170 INFO L470 AbstractCegarLoop]: Abstraction has 254 states and 380 transitions. [2021-10-28 08:43:22,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 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 08:43:22,170 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 380 transitions. [2021-10-28 08:43:22,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-10-28 08:43:22,171 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:43:22,171 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:43:22,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-10-28 08:43:22,172 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:43:22,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:43:22,172 INFO L85 PathProgramCache]: Analyzing trace with hash -662811098, now seen corresponding path program 1 times [2021-10-28 08:43:22,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:43:22,173 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821594322] [2021-10-28 08:43:22,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:43:22,173 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:43:22,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:43:22,238 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-28 08:43:22,238 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:43:22,238 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821594322] [2021-10-28 08:43:22,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821594322] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:43:22,238 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:43:22,239 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 08:43:22,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987024606] [2021-10-28 08:43:22,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 08:43:22,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:43:22,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 08:43:22,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 08:43:22,241 INFO L87 Difference]: Start difference. First operand 254 states and 380 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 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 08:43:24,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:43:24,672 INFO L93 Difference]: Finished difference Result 537 states and 801 transitions. [2021-10-28 08:43:24,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 08:43:24,673 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2021-10-28 08:43:24,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:43:24,675 INFO L225 Difference]: With dead ends: 537 [2021-10-28 08:43:24,675 INFO L226 Difference]: Without dead ends: 304 [2021-10-28 08:43:24,676 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 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 08:43:24,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2021-10-28 08:43:24,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 254. [2021-10-28 08:43:24,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 253 states have (on average 1.4980237154150198) internal successors, (379), 253 states have internal predecessors, (379), 0 states have call successors, (0), 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 08:43:24,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 379 transitions. [2021-10-28 08:43:24,685 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 379 transitions. Word has length 103 [2021-10-28 08:43:24,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:43:24,686 INFO L470 AbstractCegarLoop]: Abstraction has 254 states and 379 transitions. [2021-10-28 08:43:24,686 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 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 08:43:24,686 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 379 transitions. [2021-10-28 08:43:24,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-10-28 08:43:24,687 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:43:24,687 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:43:24,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-10-28 08:43:24,688 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:43:24,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:43:24,689 INFO L85 PathProgramCache]: Analyzing trace with hash -768373665, now seen corresponding path program 1 times [2021-10-28 08:43:24,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:43:24,689 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495241248] [2021-10-28 08:43:24,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:43:24,689 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:43:24,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:43:24,776 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-28 08:43:24,776 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:43:24,776 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495241248] [2021-10-28 08:43:24,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495241248] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:43:24,776 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:43:24,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 08:43:24,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321954584] [2021-10-28 08:43:24,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 08:43:24,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:43:24,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 08:43:24,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 08:43:24,778 INFO L87 Difference]: Start difference. First operand 254 states and 379 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:43:27,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:43:27,086 INFO L93 Difference]: Finished difference Result 508 states and 760 transitions. [2021-10-28 08:43:27,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 08:43:27,086 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2021-10-28 08:43:27,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:43:27,088 INFO L225 Difference]: With dead ends: 508 [2021-10-28 08:43:27,088 INFO L226 Difference]: Without dead ends: 275 [2021-10-28 08:43:27,089 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 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 08:43:27,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2021-10-28 08:43:27,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 254. [2021-10-28 08:43:27,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 253 states have (on average 1.4940711462450593) internal successors, (378), 253 states have internal predecessors, (378), 0 states have call successors, (0), 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 08:43:27,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 378 transitions. [2021-10-28 08:43:27,099 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 378 transitions. Word has length 104 [2021-10-28 08:43:27,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:43:27,099 INFO L470 AbstractCegarLoop]: Abstraction has 254 states and 378 transitions. [2021-10-28 08:43:27,099 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:43:27,099 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 378 transitions. [2021-10-28 08:43:27,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-10-28 08:43:27,101 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:43:27,101 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:43:27,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-10-28 08:43:27,101 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:43:27,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:43:27,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1565018973, now seen corresponding path program 1 times [2021-10-28 08:43:27,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:43:27,103 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306279943] [2021-10-28 08:43:27,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:43:27,103 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:43:27,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:43:27,172 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-28 08:43:27,172 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:43:27,172 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306279943] [2021-10-28 08:43:27,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306279943] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:43:27,173 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:43:27,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 08:43:27,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433867414] [2021-10-28 08:43:27,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 08:43:27,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:43:27,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 08:43:27,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 08:43:27,175 INFO L87 Difference]: Start difference. First operand 254 states and 378 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:43:29,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:43:29,571 INFO L93 Difference]: Finished difference Result 537 states and 797 transitions. [2021-10-28 08:43:29,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 08:43:29,572 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2021-10-28 08:43:29,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:43:29,574 INFO L225 Difference]: With dead ends: 537 [2021-10-28 08:43:29,574 INFO L226 Difference]: Without dead ends: 304 [2021-10-28 08:43:29,575 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 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 08:43:29,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2021-10-28 08:43:29,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 254. [2021-10-28 08:43:29,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 253 states have (on average 1.4901185770750989) internal successors, (377), 253 states have internal predecessors, (377), 0 states have call successors, (0), 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 08:43:29,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 377 transitions. [2021-10-28 08:43:29,584 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 377 transitions. Word has length 104 [2021-10-28 08:43:29,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:43:29,584 INFO L470 AbstractCegarLoop]: Abstraction has 254 states and 377 transitions. [2021-10-28 08:43:29,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:43:29,584 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 377 transitions. [2021-10-28 08:43:29,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-10-28 08:43:29,586 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:43:29,586 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:43:29,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-10-28 08:43:29,587 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:43:29,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:43:29,587 INFO L85 PathProgramCache]: Analyzing trace with hash -336434935, now seen corresponding path program 1 times [2021-10-28 08:43:29,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:43:29,588 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568881331] [2021-10-28 08:43:29,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:43:29,588 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:43:29,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:43:29,657 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-28 08:43:29,657 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:43:29,658 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568881331] [2021-10-28 08:43:29,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568881331] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:43:29,658 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:43:29,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 08:43:29,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173957485] [2021-10-28 08:43:29,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 08:43:29,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:43:29,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 08:43:29,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 08:43:29,660 INFO L87 Difference]: Start difference. First operand 254 states and 377 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 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 08:43:31,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:43:31,991 INFO L93 Difference]: Finished difference Result 498 states and 744 transitions. [2021-10-28 08:43:31,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 08:43:31,991 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-10-28 08:43:31,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:43:31,993 INFO L225 Difference]: With dead ends: 498 [2021-10-28 08:43:31,993 INFO L226 Difference]: Without dead ends: 265 [2021-10-28 08:43:31,993 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 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 08:43:32,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2021-10-28 08:43:32,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 254. [2021-10-28 08:43:32,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 253 states have (on average 1.4861660079051384) internal successors, (376), 253 states have internal predecessors, (376), 0 states have call successors, (0), 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 08:43:32,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 376 transitions. [2021-10-28 08:43:32,023 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 376 transitions. Word has length 105 [2021-10-28 08:43:32,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:43:32,024 INFO L470 AbstractCegarLoop]: Abstraction has 254 states and 376 transitions. [2021-10-28 08:43:32,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 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 08:43:32,024 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 376 transitions. [2021-10-28 08:43:32,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-10-28 08:43:32,026 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:43:32,026 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:43:32,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-10-28 08:43:32,026 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:43:32,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:43:32,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1015707189, now seen corresponding path program 1 times [2021-10-28 08:43:32,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:43:32,029 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665980164] [2021-10-28 08:43:32,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:43:32,029 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:43:32,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:43:32,108 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-28 08:43:32,108 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:43:32,108 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665980164] [2021-10-28 08:43:32,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665980164] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:43:32,109 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:43:32,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 08:43:32,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076110903] [2021-10-28 08:43:32,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 08:43:32,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:43:32,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 08:43:32,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 08:43:32,111 INFO L87 Difference]: Start difference. First operand 254 states and 376 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 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 08:43:34,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:43:34,528 INFO L93 Difference]: Finished difference Result 527 states and 781 transitions. [2021-10-28 08:43:34,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 08:43:34,529 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-10-28 08:43:34,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:43:34,530 INFO L225 Difference]: With dead ends: 527 [2021-10-28 08:43:34,530 INFO L226 Difference]: Without dead ends: 294 [2021-10-28 08:43:34,531 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 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 08:43:34,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2021-10-28 08:43:34,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 254. [2021-10-28 08:43:34,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 253 states have (on average 1.482213438735178) internal successors, (375), 253 states have internal predecessors, (375), 0 states have call successors, (0), 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 08:43:34,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 375 transitions. [2021-10-28 08:43:34,541 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 375 transitions. Word has length 105 [2021-10-28 08:43:34,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:43:34,541 INFO L470 AbstractCegarLoop]: Abstraction has 254 states and 375 transitions. [2021-10-28 08:43:34,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 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 08:43:34,542 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 375 transitions. [2021-10-28 08:43:34,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-10-28 08:43:34,543 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:43:34,543 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:43:34,544 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-10-28 08:43:34,544 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:43:34,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:43:34,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1617780493, now seen corresponding path program 1 times [2021-10-28 08:43:34,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:43:34,545 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213655746] [2021-10-28 08:43:34,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:43:34,545 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:43:34,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:43:34,610 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-28 08:43:34,611 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:43:34,611 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213655746] [2021-10-28 08:43:34,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213655746] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:43:34,611 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:43:34,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 08:43:34,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541306540] [2021-10-28 08:43:34,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 08:43:34,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:43:34,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 08:43:34,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:43:34,613 INFO L87 Difference]: Start difference. First operand 254 states and 375 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 08:43:34,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:43:34,650 INFO L93 Difference]: Finished difference Result 716 states and 1072 transitions. [2021-10-28 08:43:34,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 08:43:34,651 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 108 [2021-10-28 08:43:34,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:43:34,654 INFO L225 Difference]: With dead ends: 716 [2021-10-28 08:43:34,654 INFO L226 Difference]: Without dead ends: 483 [2021-10-28 08:43:34,655 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 08:43:34,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2021-10-28 08:43:34,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 483. [2021-10-28 08:43:34,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 482 states have (on average 1.4854771784232366) internal successors, (716), 482 states have internal predecessors, (716), 0 states have call successors, (0), 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 08:43:34,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 716 transitions. [2021-10-28 08:43:34,672 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 716 transitions. Word has length 108 [2021-10-28 08:43:34,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:43:34,673 INFO L470 AbstractCegarLoop]: Abstraction has 483 states and 716 transitions. [2021-10-28 08:43:34,673 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 08:43:34,673 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 716 transitions. [2021-10-28 08:43:34,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-10-28 08:43:34,675 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:43:34,676 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:43:34,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-10-28 08:43:34,676 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:43:34,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:43:34,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1461033077, now seen corresponding path program 1 times [2021-10-28 08:43:34,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:43:34,677 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116432644] [2021-10-28 08:43:34,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:43:34,677 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:43:34,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:43:34,728 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-10-28 08:43:34,728 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:43:34,728 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116432644] [2021-10-28 08:43:34,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116432644] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:43:34,729 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:43:34,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 08:43:34,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878837321] [2021-10-28 08:43:34,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 08:43:34,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:43:34,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 08:43:34,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:43:34,731 INFO L87 Difference]: Start difference. First operand 483 states and 716 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 08:43:34,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:43:34,761 INFO L93 Difference]: Finished difference Result 972 states and 1444 transitions. [2021-10-28 08:43:34,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 08:43:34,761 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 108 [2021-10-28 08:43:34,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:43:34,764 INFO L225 Difference]: With dead ends: 972 [2021-10-28 08:43:34,765 INFO L226 Difference]: Without dead ends: 510 [2021-10-28 08:43:34,766 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 08:43:34,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2021-10-28 08:43:34,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 510. [2021-10-28 08:43:34,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 510 states, 509 states have (on average 1.475442043222004) internal successors, (751), 509 states have internal predecessors, (751), 0 states have call successors, (0), 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 08:43:34,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 751 transitions. [2021-10-28 08:43:34,807 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 751 transitions. Word has length 108 [2021-10-28 08:43:34,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:43:34,807 INFO L470 AbstractCegarLoop]: Abstraction has 510 states and 751 transitions. [2021-10-28 08:43:34,807 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 08:43:34,807 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 751 transitions. [2021-10-28 08:43:34,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-10-28 08:43:34,809 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:43:34,810 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:43:34,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-10-28 08:43:34,810 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:43:34,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:43:34,811 INFO L85 PathProgramCache]: Analyzing trace with hash 874756855, now seen corresponding path program 1 times [2021-10-28 08:43:34,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:43:34,811 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024441461] [2021-10-28 08:43:34,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:43:34,811 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:43:34,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:43:34,861 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2021-10-28 08:43:34,862 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:43:34,862 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024441461] [2021-10-28 08:43:34,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024441461] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:43:34,862 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:43:34,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 08:43:34,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819619184] [2021-10-28 08:43:34,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 08:43:34,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:43:34,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 08:43:34,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:43:34,864 INFO L87 Difference]: Start difference. First operand 510 states and 751 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 08:43:34,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:43:34,888 INFO L93 Difference]: Finished difference Result 1001 states and 1480 transitions. [2021-10-28 08:43:34,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 08:43:34,889 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 108 [2021-10-28 08:43:34,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:43:34,892 INFO L225 Difference]: With dead ends: 1001 [2021-10-28 08:43:34,892 INFO L226 Difference]: Without dead ends: 512 [2021-10-28 08:43:34,893 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 08:43:34,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2021-10-28 08:43:34,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 512. [2021-10-28 08:43:34,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 512 states, 511 states have (on average 1.4735812133072408) internal successors, (753), 511 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 08:43:34,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 753 transitions. [2021-10-28 08:43:34,909 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 753 transitions. Word has length 108 [2021-10-28 08:43:34,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:43:34,910 INFO L470 AbstractCegarLoop]: Abstraction has 512 states and 753 transitions. [2021-10-28 08:43:34,910 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 08:43:34,910 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 753 transitions. [2021-10-28 08:43:34,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-10-28 08:43:34,912 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:43:34,912 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, 1, 1] [2021-10-28 08:43:34,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-10-28 08:43:34,913 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:43:34,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:43:34,913 INFO L85 PathProgramCache]: Analyzing trace with hash 1658817010, now seen corresponding path program 1 times [2021-10-28 08:43:34,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:43:34,914 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071715500] [2021-10-28 08:43:34,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:43:34,914 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:43:34,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:43:34,980 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 08:43:34,980 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:43:34,981 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071715500] [2021-10-28 08:43:34,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071715500] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:43:34,981 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:43:34,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 08:43:34,981 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098296956] [2021-10-28 08:43:34,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 08:43:34,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:43:34,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 08:43:34,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:43:34,983 INFO L87 Difference]: Start difference. First operand 512 states and 753 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 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 08:43:35,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:43:35,020 INFO L93 Difference]: Finished difference Result 1001 states and 1479 transitions. [2021-10-28 08:43:35,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 08:43:35,021 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 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 127 [2021-10-28 08:43:35,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:43:35,024 INFO L225 Difference]: With dead ends: 1001 [2021-10-28 08:43:35,024 INFO L226 Difference]: Without dead ends: 512 [2021-10-28 08:43:35,025 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 08:43:35,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2021-10-28 08:43:35,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 512. [2021-10-28 08:43:35,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 512 states, 511 states have (on average 1.4637964774951076) internal successors, (748), 511 states have internal predecessors, (748), 0 states have call successors, (0), 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 08:43:35,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 748 transitions. [2021-10-28 08:43:35,043 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 748 transitions. Word has length 127 [2021-10-28 08:43:35,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:43:35,043 INFO L470 AbstractCegarLoop]: Abstraction has 512 states and 748 transitions. [2021-10-28 08:43:35,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 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 08:43:35,044 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 748 transitions. [2021-10-28 08:43:35,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-10-28 08:43:35,046 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:43:35,046 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, 1, 1, 1] [2021-10-28 08:43:35,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-10-28 08:43:35,046 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:43:35,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:43:35,047 INFO L85 PathProgramCache]: Analyzing trace with hash -116280318, now seen corresponding path program 1 times [2021-10-28 08:43:35,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:43:35,047 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526277052] [2021-10-28 08:43:35,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:43:35,048 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:43:35,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:43:35,446 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2021-10-28 08:43:35,446 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:43:35,446 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526277052] [2021-10-28 08:43:35,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526277052] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:43:35,447 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:43:35,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 08:43:35,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515121102] [2021-10-28 08:43:35,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 08:43:35,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:43:35,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 08:43:35,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 08:43:35,450 INFO L87 Difference]: Start difference. First operand 512 states and 748 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 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 08:43:39,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:43:39,859 INFO L93 Difference]: Finished difference Result 1021 states and 1492 transitions. [2021-10-28 08:43:39,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 08:43:39,860 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 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 128 [2021-10-28 08:43:39,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:43:39,863 INFO L225 Difference]: With dead ends: 1021 [2021-10-28 08:43:39,864 INFO L226 Difference]: Without dead ends: 512 [2021-10-28 08:43:39,865 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-28 08:43:39,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2021-10-28 08:43:39,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 512. [2021-10-28 08:43:39,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 512 states, 511 states have (on average 1.461839530332681) internal successors, (747), 511 states have internal predecessors, (747), 0 states have call successors, (0), 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 08:43:39,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 747 transitions. [2021-10-28 08:43:39,883 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 747 transitions. Word has length 128 [2021-10-28 08:43:39,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:43:39,883 INFO L470 AbstractCegarLoop]: Abstraction has 512 states and 747 transitions. [2021-10-28 08:43:39,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 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 08:43:39,884 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 747 transitions. [2021-10-28 08:43:39,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-10-28 08:43:39,885 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:43:39,886 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, 1, 1, 1] [2021-10-28 08:43:39,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-10-28 08:43:39,886 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:43:39,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:43:39,887 INFO L85 PathProgramCache]: Analyzing trace with hash -545938624, now seen corresponding path program 1 times [2021-10-28 08:43:39,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:43:39,887 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377514932] [2021-10-28 08:43:39,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:43:39,888 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:43:40,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:43:40,133 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:43:40,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:43:40,553 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:43:40,553 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 08:43:40,554 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 08:43:40,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-10-28 08:43:40,560 INFO L731 BasicCegarLoop]: Path program 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] [2021-10-28 08:43:40,565 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 08:43:40,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 08:43:40 BoogieIcfgContainer [2021-10-28 08:43:40,737 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 08:43:40,738 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 08:43:40,738 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 08:43:40,738 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 08:43:40,739 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:42:02" (3/4) ... [2021-10-28 08:43:40,742 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 08:43:40,744 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 08:43:40,746 INFO L168 Benchmark]: Toolchain (without parser) took 102312.28 ms. Allocated memory was 119.5 MB in the beginning and 163.6 MB in the end (delta: 44.0 MB). Free memory was 81.4 MB in the beginning and 111.5 MB in the end (delta: -30.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 16.1 GB. [2021-10-28 08:43:40,746 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 119.5 MB. Free memory was 93.0 MB in the beginning and 93.0 MB in the end (delta: 24.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 08:43:40,747 INFO L168 Benchmark]: CACSL2BoogieTranslator took 867.44 ms. Allocated memory is still 119.5 MB. Free memory was 81.2 MB in the beginning and 72.7 MB in the end (delta: 8.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-28 08:43:40,748 INFO L168 Benchmark]: Boogie Procedure Inliner took 127.20 ms. Allocated memory is still 119.5 MB. Free memory was 72.7 MB in the beginning and 67.6 MB in the end (delta: 5.1 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-28 08:43:40,749 INFO L168 Benchmark]: Boogie Preprocessor took 147.08 ms. Allocated memory is still 119.5 MB. Free memory was 67.6 MB in the beginning and 60.7 MB in the end (delta: 6.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-28 08:43:40,749 INFO L168 Benchmark]: RCFGBuilder took 3298.49 ms. Allocated memory was 119.5 MB in the beginning and 163.6 MB in the end (delta: 44.0 MB). Free memory was 60.7 MB in the beginning and 126.9 MB in the end (delta: -66.1 MB). Peak memory consumption was 40.0 MB. Max. memory is 16.1 GB. [2021-10-28 08:43:40,750 INFO L168 Benchmark]: TraceAbstraction took 97858.57 ms. Allocated memory is still 163.6 MB. Free memory was 126.9 MB in the beginning and 111.5 MB in the end (delta: 15.4 MB). Peak memory consumption was 91.8 MB. Max. memory is 16.1 GB. [2021-10-28 08:43:40,750 INFO L168 Benchmark]: Witness Printer took 6.27 ms. Allocated memory is still 163.6 MB. Free memory is still 111.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 08:43:40,752 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 119.5 MB. Free memory was 93.0 MB in the beginning and 93.0 MB in the end (delta: 24.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 867.44 ms. Allocated memory is still 119.5 MB. Free memory was 81.2 MB in the beginning and 72.7 MB in the end (delta: 8.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 127.20 ms. Allocated memory is still 119.5 MB. Free memory was 72.7 MB in the beginning and 67.6 MB in the end (delta: 5.1 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 147.08 ms. Allocated memory is still 119.5 MB. Free memory was 67.6 MB in the beginning and 60.7 MB in the end (delta: 6.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * RCFGBuilder took 3298.49 ms. Allocated memory was 119.5 MB in the beginning and 163.6 MB in the end (delta: 44.0 MB). Free memory was 60.7 MB in the beginning and 126.9 MB in the end (delta: -66.1 MB). Peak memory consumption was 40.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 97858.57 ms. Allocated memory is still 163.6 MB. Free memory was 126.9 MB in the beginning and 111.5 MB in the end (delta: 15.4 MB). Peak memory consumption was 91.8 MB. Max. memory is 16.1 GB. * Witness Printer took 6.27 ms. Allocated memory is still 163.6 MB. Free memory is still 111.5 MB. There was no memory consumed. 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 - UnprovableResult [Line: 1737]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseAnd at line 1151. Possible FailurePath: [L1054] static int init = 1; [L1055] static SSL_METHOD SSLv3_server_data ; VAL [init=1, SSLv3_server_data={4294967305:0}] [L1077] SSL *s ; [L1078] int tmp ; [L1082] s = malloc(sizeof(SSL)) [L1083] s->s3 = malloc(sizeof(struct ssl3_state_st)) [L1084] s->ctx = malloc(sizeof(SSL_CTX)) [L1085] s->session = malloc(sizeof(SSL_SESSION)) [L1086] s->state = 8464 [L1088] s->info_callback = (void (*) ()) __VERIFIER_nondet_ulong() [L1089] s->options = __VERIFIER_nondet_ulong() [L1090] s->verify_mode = __VERIFIER_nondet_int() [L1091] EXPR s->session [L1091] (s->session)->peer = (struct x509_st*) __VERIFIER_nondet_ulong() [L1092] EXPR s->s3 [L1092] (s->s3)->tmp.cert_request = __VERIFIER_nondet_int() [L1093] EXPR s->s3 [L1093] (s->s3)->tmp.new_cipher = malloc(sizeof(struct ssl_cipher_st)) [L1094] EXPR s->s3 [L1094] EXPR (s->s3)->tmp.new_cipher [L1094] ((s->s3)->tmp.new_cipher)->algorithms = __VERIFIER_nondet_ulong() [L1095] EXPR s->s3 [L1095] EXPR (s->s3)->tmp.new_cipher [L1095] ((s->s3)->tmp.new_cipher)->algo_strength = __VERIFIER_nondet_ulong() [L1096] COND FALSE !(__VERIFIER_nondet_int()) [L1102] s->cert = malloc(sizeof(struct cert_st)) [L1103] EXPR s->cert [L1103] (s->cert)->pkeys[0].privatekey = (struct evp_pkey_st*) __VERIFIER_nondet_ulong() [L1112] BUF_MEM *buf = (BUF_MEM *)__VERIFIER_nondet_ulong(); [L1113] unsigned long l ; [L1114] unsigned long Time ; [L1115] unsigned long tmp = __VERIFIER_nondet_long() ; [L1116] void (*cb)() ; [L1117] long num1 ; [L1118] int ret ; [L1119] int new_state ; [L1120] int state ; [L1121] int skip ; [L1122] int got_new_session ; [L1123] int tmp___1 = __VERIFIER_nondet_int() ; [L1124] int tmp___2 = __VERIFIER_nondet_int() ; [L1125] int tmp___3 ; [L1126] int tmp___4 ; [L1127] int tmp___5 ; [L1128] int tmp___6 ; [L1129] int tmp___7 ; [L1130] long tmp___8 = __VERIFIER_nondet_long() ; [L1131] int tmp___9 ; [L1132] int tmp___10 ; [L1133] int blastFlag ; [L1137] blastFlag = 0 [L1138] s->hit=__VERIFIER_nondet_int () [L1139] s->state = 8464 [L1140] Time = tmp [L1141] cb = (void (*)())((void *)0) [L1142] ret = -1 [L1143] skip = 0 [L1144] got_new_session = 0 [L1145] EXPR s->info_callback VAL [init=1, SSLv3_server_data={4294967305:0}] [L1145] COND TRUE (unsigned long )s->info_callback != (unsigned long )((void *)0) [L1146] EXPR s->info_callback [L1146] cb = s->info_callback [L1150] EXPR s->in_handshake [L1150] s->in_handshake += 1 [L1151] COND FALSE !(tmp___1 & 12288) VAL [init=1, SSLv3_server_data={4294967305:0}] [L1160] EXPR s->cert VAL [init=1, SSLv3_server_data={4294967305:0}] [L1160] COND FALSE !((unsigned long )s->cert == (unsigned long )((void *)0)) [L1166] COND TRUE 1 VAL [init=1, SSLv3_server_data={4294967305:0}] [L1168] EXPR s->state [L1168] state = s->state [L1169] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1169] COND FALSE !(s->state == 12292) [L1172] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1172] COND FALSE !(s->state == 16384) [L1175] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1175] COND FALSE !(s->state == 8192) [L1178] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1178] COND FALSE !(s->state == 24576) [L1181] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1181] COND FALSE !(s->state == 8195) [L1184] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1184] COND FALSE !(s->state == 8480) [L1187] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1187] COND FALSE !(s->state == 8481) [L1190] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1190] COND FALSE !(s->state == 8482) [L1193] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1193] COND TRUE s->state == 8464 [L1349] s->shutdown = 0 [L1350] ret = __VERIFIER_nondet_int() [L1351] COND TRUE blastFlag == 0 [L1352] blastFlag = 1 VAL [init=1, SSLv3_server_data={4294967305:0}] [L1356] COND FALSE !(ret <= 0) [L1361] got_new_session = 1 [L1362] s->state = 8496 [L1363] s->init_num = 0 VAL [init=1, SSLv3_server_data={4294967305:0}] [L1696] EXPR s->s3 [L1696] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_server_data={4294967305:0}] [L1696] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1725] skip = 0 VAL [init=1, SSLv3_server_data={4294967305:0}] [L1166] COND TRUE 1 VAL [init=1, SSLv3_server_data={4294967305:0}] [L1168] EXPR s->state [L1168] state = s->state [L1169] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1169] COND FALSE !(s->state == 12292) [L1172] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1172] COND FALSE !(s->state == 16384) [L1175] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1175] COND FALSE !(s->state == 8192) [L1178] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1178] COND FALSE !(s->state == 24576) [L1181] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1181] COND FALSE !(s->state == 8195) [L1184] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1184] COND FALSE !(s->state == 8480) [L1187] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1187] COND FALSE !(s->state == 8481) [L1190] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1190] COND FALSE !(s->state == 8482) [L1193] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1193] COND FALSE !(s->state == 8464) [L1196] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1196] COND FALSE !(s->state == 8465) [L1199] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1199] COND FALSE !(s->state == 8466) [L1202] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1202] COND TRUE s->state == 8496 [L1367] ret = __VERIFIER_nondet_int() [L1368] COND TRUE blastFlag == 1 [L1369] blastFlag = 2 VAL [init=1, SSLv3_server_data={4294967305:0}] [L1373] COND FALSE !(ret <= 0) [L1378] s->hit VAL [init=1, SSLv3_server_data={4294967305:0}] [L1378] COND TRUE s->hit [L1379] s->state = 8656 VAL [init=1, SSLv3_server_data={4294967305:0}] [L1383] s->init_num = 0 VAL [init=1, SSLv3_server_data={4294967305:0}] [L1696] EXPR s->s3 [L1696] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_server_data={4294967305:0}] [L1696] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1725] skip = 0 VAL [init=1, SSLv3_server_data={4294967305:0}] [L1166] COND TRUE 1 VAL [init=1, SSLv3_server_data={4294967305:0}] [L1168] EXPR s->state [L1168] state = s->state [L1169] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1169] COND FALSE !(s->state == 12292) [L1172] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1172] COND FALSE !(s->state == 16384) [L1175] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1175] COND FALSE !(s->state == 8192) [L1178] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1178] COND FALSE !(s->state == 24576) [L1181] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1181] COND FALSE !(s->state == 8195) [L1184] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1184] COND FALSE !(s->state == 8480) [L1187] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1187] COND FALSE !(s->state == 8481) [L1190] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1190] COND FALSE !(s->state == 8482) [L1193] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1193] COND FALSE !(s->state == 8464) [L1196] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1196] COND FALSE !(s->state == 8465) [L1199] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1199] COND FALSE !(s->state == 8466) [L1202] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1202] COND FALSE !(s->state == 8496) [L1205] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1205] COND FALSE !(s->state == 8497) [L1208] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1208] COND FALSE !(s->state == 8512) [L1211] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1211] COND FALSE !(s->state == 8513) [L1214] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1214] COND FALSE !(s->state == 8528) [L1217] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1217] COND FALSE !(s->state == 8529) [L1220] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1220] COND FALSE !(s->state == 8544) [L1223] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1223] COND FALSE !(s->state == 8545) [L1226] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1226] COND FALSE !(s->state == 8560) [L1229] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1229] COND FALSE !(s->state == 8561) [L1232] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1232] COND FALSE !(s->state == 8448) [L1235] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1235] COND FALSE !(s->state == 8576) [L1238] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1238] COND FALSE !(s->state == 8577) [L1241] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1241] COND FALSE !(s->state == 8592) [L1244] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1244] COND FALSE !(s->state == 8593) [L1247] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1247] COND FALSE !(s->state == 8608) [L1250] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1250] COND FALSE !(s->state == 8609) [L1253] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1253] COND FALSE !(s->state == 8640) [L1256] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1256] COND FALSE !(s->state == 8641) [L1259] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1259] COND TRUE s->state == 8656 [L1583] EXPR s->session [L1583] EXPR s->s3 [L1583] EXPR (s->s3)->tmp.new_cipher [L1583] (s->session)->cipher = (s->s3)->tmp.new_cipher [L1584] tmp___9 = __VERIFIER_nondet_int() [L1585] COND FALSE !(! tmp___9) [L1591] ret = __VERIFIER_nondet_int() [L1592] COND TRUE blastFlag == 2 [L1593] blastFlag = 5 VAL [init=1, SSLv3_server_data={4294967305:0}] [L1597] COND FALSE !(ret <= 0) [L1602] s->state = 8672 [L1603] s->init_num = 0 [L1604] tmp___10 = __VERIFIER_nondet_int() [L1605] COND FALSE !(! tmp___10) VAL [init=1, SSLv3_server_data={4294967305:0}] [L1696] EXPR s->s3 [L1696] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_server_data={4294967305:0}] [L1696] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1725] skip = 0 VAL [init=1, SSLv3_server_data={4294967305:0}] [L1166] COND TRUE 1 VAL [init=1, SSLv3_server_data={4294967305:0}] [L1168] EXPR s->state [L1168] state = s->state [L1169] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1169] COND FALSE !(s->state == 12292) [L1172] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1172] COND FALSE !(s->state == 16384) [L1175] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1175] COND FALSE !(s->state == 8192) [L1178] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1178] COND FALSE !(s->state == 24576) [L1181] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1181] COND FALSE !(s->state == 8195) [L1184] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1184] COND FALSE !(s->state == 8480) [L1187] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1187] COND FALSE !(s->state == 8481) [L1190] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1190] COND FALSE !(s->state == 8482) [L1193] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1193] COND FALSE !(s->state == 8464) [L1196] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1196] COND FALSE !(s->state == 8465) [L1199] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1199] COND FALSE !(s->state == 8466) [L1202] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1202] COND FALSE !(s->state == 8496) [L1205] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1205] COND FALSE !(s->state == 8497) [L1208] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1208] COND FALSE !(s->state == 8512) [L1211] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1211] COND FALSE !(s->state == 8513) [L1214] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1214] COND FALSE !(s->state == 8528) [L1217] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1217] COND FALSE !(s->state == 8529) [L1220] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1220] COND FALSE !(s->state == 8544) [L1223] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1223] COND FALSE !(s->state == 8545) [L1226] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1226] COND FALSE !(s->state == 8560) [L1229] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1229] COND FALSE !(s->state == 8561) [L1232] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1232] COND FALSE !(s->state == 8448) [L1235] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1235] COND FALSE !(s->state == 8576) [L1238] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1238] COND FALSE !(s->state == 8577) [L1241] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1241] COND FALSE !(s->state == 8592) [L1244] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1244] COND FALSE !(s->state == 8593) [L1247] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1247] COND FALSE !(s->state == 8608) [L1250] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1250] COND FALSE !(s->state == 8609) [L1253] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1253] COND FALSE !(s->state == 8640) [L1256] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1256] COND FALSE !(s->state == 8641) [L1259] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1259] COND FALSE !(s->state == 8656) [L1262] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1262] COND FALSE !(s->state == 8657) [L1265] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1265] COND TRUE s->state == 8672 [L1614] ret = __VERIFIER_nondet_int() [L1615] COND FALSE !(blastFlag == 4) VAL [init=1, SSLv3_server_data={4294967305:0}] [L1618] COND TRUE blastFlag == 5 VAL [init=1, SSLv3_server_data={4294967305:0}] [L1737] reach_error() VAL [init=1, SSLv3_server_data={4294967305:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 147 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 97.6s, OverallIterations: 42, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 92.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 8199 SDtfs, 2141 SDslu, 11719 SDs, 0 SdLazy, 6840 SolverSat, 342 SolverUnsat, 39 SolverUnknown, 0 SolverNotchecked, 87.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 230 GetRequests, 83 SyntacticMatches, 28 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=512occurred in iteration=39, InterpolantAutomatonStates: 164, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 41 MinimizatonAttempts, 868 StatesRemovedByMinimization, 36 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 3750 NumberOfCodeBlocks, 3750 NumberOfCodeBlocksAsserted, 42 NumberOfCheckSat, 3581 ConstructedInterpolants, 0 QuantifiedInterpolants, 9484 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 41 InterpolantComputations, 41 PerfectInterpolantSequences, 1856/1856 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 could not prove your program: unable to determine feasibility of some traces [2021-10-28 08:43:40,810 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bafe3d53-df8d-4fce-803a-ff8008445675/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 08:43:43,337 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2021-10-28 08:43:43,425 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 08:43:43,428 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 08:43:43,430 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 08:43:43,436 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 08:43:43,438 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 08:43:43,439 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 08:43:43,442 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 08:43:43,444 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 08:43:43,451 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 08:43:43,453 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 08:43:43,455 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 08:43:43,458 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 08:43:43,470 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 08:43:43,470 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 08:43:43,471 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 08:43:43,473 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 08:43:43,473 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 08:43:43,474 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 08:43:43,475 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 08:43:43,476 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 08:43:43,478 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 08:43:43,479 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 08:43:43,481 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 08:43:43,481 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 08:43:43,482 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 08:43:43,482 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 08:43:43,483 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 08:43:43,485 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 08:43:43,486 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 08:43:43,487 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bafe3d53-df8d-4fce-803a-ff8008445675/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-10-28 08:43:43,533 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 08:43:43,533 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 08:43:43,534 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 08:43:43,534 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 08:43:43,537 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 08:43:43,537 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 08:43:43,537 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 08:43:43,538 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 08:43:43,538 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 08:43:43,538 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 08:43:43,539 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 08:43:43,540 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 08:43:43,540 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 08:43:43,540 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 08:43:43,541 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-28 08:43:43,541 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-28 08:43:43,541 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 08:43:43,541 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 08:43:43,542 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 08:43:43,542 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 08:43:43,542 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 08:43:43,542 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 08:43:43,543 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 08:43:43,543 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 08:43:43,543 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 08:43:43,543 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 08:43:43,544 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 08:43:43,544 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-28 08:43:43,545 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-28 08:43:43,545 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 08:43:43,545 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 08:43:43,545 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 08:43:43,546 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 08:43:43,546 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-28 08:43:43,546 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_bafe3d53-df8d-4fce-803a-ff8008445675/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bafe3d53-df8d-4fce-803a-ff8008445675/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a1fff1f2750aedbe7119b44ad3cdc8a2dbfa05ad8147a422ae9aeb0054d6e253 [2021-10-28 08:43:43,945 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 08:43:43,969 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 08:43:43,973 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 08:43:43,974 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 08:43:43,975 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 08:43:43,976 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bafe3d53-df8d-4fce-803a-ff8008445675/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/openssl/s3_srvr.blast.01.i.cil-2.c [2021-10-28 08:43:44,056 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bafe3d53-df8d-4fce-803a-ff8008445675/bin/uautomizer-UnR33cPsHg/data/3114bc40a/3682a0989ed64c5fa41b915510ab1a09/FLAGb741f9440 [2021-10-28 08:43:44,829 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 08:43:44,831 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bafe3d53-df8d-4fce-803a-ff8008445675/sv-benchmarks/c/openssl/s3_srvr.blast.01.i.cil-2.c [2021-10-28 08:43:44,869 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bafe3d53-df8d-4fce-803a-ff8008445675/bin/uautomizer-UnR33cPsHg/data/3114bc40a/3682a0989ed64c5fa41b915510ab1a09/FLAGb741f9440 [2021-10-28 08:43:44,974 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bafe3d53-df8d-4fce-803a-ff8008445675/bin/uautomizer-UnR33cPsHg/data/3114bc40a/3682a0989ed64c5fa41b915510ab1a09 [2021-10-28 08:43:44,977 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 08:43:44,978 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 08:43:44,980 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 08:43:44,980 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 08:43:44,984 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 08:43:44,985 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:43:44" (1/1) ... [2021-10-28 08:43:44,986 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26565da6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:43:44, skipping insertion in model container [2021-10-28 08:43:44,987 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:43:44" (1/1) ... [2021-10-28 08:43:44,995 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 08:43:45,075 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 08:43:45,657 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_bafe3d53-df8d-4fce-803a-ff8008445675/sv-benchmarks/c/openssl/s3_srvr.blast.01.i.cil-2.c[72913,72926] [2021-10-28 08:43:45,673 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:43:45,713 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 08:43:45,923 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_bafe3d53-df8d-4fce-803a-ff8008445675/sv-benchmarks/c/openssl/s3_srvr.blast.01.i.cil-2.c[72913,72926] [2021-10-28 08:43:45,933 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:43:45,958 INFO L208 MainTranslator]: Completed translation [2021-10-28 08:43:45,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:43:45 WrapperNode [2021-10-28 08:43:45,959 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 08:43:45,960 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 08:43:45,961 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 08:43:45,961 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 08:43:45,970 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:43:45" (1/1) ... [2021-10-28 08:43:46,022 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:43:45" (1/1) ... [2021-10-28 08:43:46,079 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 08:43:46,080 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 08:43:46,080 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 08:43:46,080 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 08:43:46,090 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:43:45" (1/1) ... [2021-10-28 08:43:46,091 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:43:45" (1/1) ... [2021-10-28 08:43:46,101 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:43:45" (1/1) ... [2021-10-28 08:43:46,101 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:43:45" (1/1) ... [2021-10-28 08:43:46,148 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:43:45" (1/1) ... [2021-10-28 08:43:46,157 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:43:45" (1/1) ... [2021-10-28 08:43:46,161 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:43:45" (1/1) ... [2021-10-28 08:43:46,167 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 08:43:46,168 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 08:43:46,169 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 08:43:46,169 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 08:43:46,170 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:43:45" (1/1) ... [2021-10-28 08:43:46,177 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 08:43:46,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bafe3d53-df8d-4fce-803a-ff8008445675/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:43:46,242 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bafe3d53-df8d-4fce-803a-ff8008445675/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 08:43:46,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bafe3d53-df8d-4fce-803a-ff8008445675/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 08:43:46,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-28 08:43:46,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-28 08:43:46,289 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 08:43:46,289 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-28 08:43:46,289 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-28 08:43:46,289 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-28 08:43:46,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 08:43:46,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 08:43:46,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-28 08:43:46,568 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-28 08:43:50,964 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2021-10-28 08:43:50,964 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2021-10-28 08:43:50,974 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 08:43:50,974 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-28 08:43:50,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:43:50 BoogieIcfgContainer [2021-10-28 08:43:50,977 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 08:43:50,979 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 08:43:50,979 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 08:43:50,982 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 08:43:50,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 08:43:44" (1/3) ... [2021-10-28 08:43:50,984 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f6e63bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:43:50, skipping insertion in model container [2021-10-28 08:43:50,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:43:45" (2/3) ... [2021-10-28 08:43:50,984 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f6e63bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:43:50, skipping insertion in model container [2021-10-28 08:43:50,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:43:50" (3/3) ... [2021-10-28 08:43:50,986 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.01.i.cil-2.c [2021-10-28 08:43:50,992 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 08:43:50,993 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 08:43:51,047 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 08:43:51,054 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 08:43:51,054 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-28 08:43:51,074 INFO L276 IsEmpty]: Start isEmpty. Operand has 147 states, 145 states have (on average 1.696551724137931) internal successors, (246), 146 states have internal predecessors, (246), 0 states have call successors, (0), 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 08:43:51,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-28 08:43:51,084 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:43:51,085 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, 1, 1] [2021-10-28 08:43:51,085 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:43:51,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:43:51,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1430116946, now seen corresponding path program 1 times [2021-10-28 08:43:51,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 08:43:51,107 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2009153400] [2021-10-28 08:43:51,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:43:51,108 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 08:43:51,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bafe3d53-df8d-4fce-803a-ff8008445675/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 08:43:51,115 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bafe3d53-df8d-4fce-803a-ff8008445675/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 08:43:51,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bafe3d53-df8d-4fce-803a-ff8008445675/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-28 08:43:51,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:43:51,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 08:43:51,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:43:51,846 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 08:43:51,846 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 08:43:52,309 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 08:43:52,310 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 08:43:52,310 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2009153400] [2021-10-28 08:43:52,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2009153400] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 08:43:52,311 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:43:52,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-28 08:43:52,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007816157] [2021-10-28 08:43:52,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 08:43:52,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 08:43:52,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 08:43:52,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 08:43:52,337 INFO L87 Difference]: Start difference. First operand has 147 states, 145 states have (on average 1.696551724137931) internal successors, (246), 146 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:43:52,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:43:52,517 INFO L93 Difference]: Finished difference Result 551 states and 928 transitions. [2021-10-28 08:43:52,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 08:43:52,519 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-10-28 08:43:52,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:43:52,537 INFO L225 Difference]: With dead ends: 551 [2021-10-28 08:43:52,538 INFO L226 Difference]: Without dead ends: 375 [2021-10-28 08:43:52,542 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 08:43:52,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2021-10-28 08:43:52,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 373. [2021-10-28 08:43:52,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 372 states have (on average 1.5188172043010753) internal successors, (565), 372 states have internal predecessors, (565), 0 states have call successors, (0), 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 08:43:52,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 565 transitions. [2021-10-28 08:43:52,647 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 565 transitions. Word has length 47 [2021-10-28 08:43:52,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:43:52,649 INFO L470 AbstractCegarLoop]: Abstraction has 373 states and 565 transitions. [2021-10-28 08:43:52,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:43:52,649 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 565 transitions. [2021-10-28 08:43:52,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-10-28 08:43:52,661 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:43:52,662 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:43:52,684 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bafe3d53-df8d-4fce-803a-ff8008445675/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-28 08:43:52,878 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bafe3d53-df8d-4fce-803a-ff8008445675/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 08:43:52,878 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:43:52,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:43:52,879 INFO L85 PathProgramCache]: Analyzing trace with hash 315021975, now seen corresponding path program 1 times [2021-10-28 08:43:52,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 08:43:52,881 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1872217734] [2021-10-28 08:43:52,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:43:52,881 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 08:43:52,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bafe3d53-df8d-4fce-803a-ff8008445675/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 08:43:52,883 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bafe3d53-df8d-4fce-803a-ff8008445675/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 08:43:52,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bafe3d53-df8d-4fce-803a-ff8008445675/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-28 08:43:53,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:43:53,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 08:43:53,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:43:53,530 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:43:53,530 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 08:43:53,904 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:43:53,904 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 08:43:53,910 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1872217734] [2021-10-28 08:43:53,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1872217734] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 08:43:53,911 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:43:53,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-28 08:43:53,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948585313] [2021-10-28 08:43:53,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 08:43:53,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 08:43:53,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 08:43:53,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 08:43:53,919 INFO L87 Difference]: Start difference. First operand 373 states and 565 transitions. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:43:54,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:43:54,099 INFO L93 Difference]: Finished difference Result 855 states and 1302 transitions. [2021-10-28 08:43:54,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 08:43:54,100 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-10-28 08:43:54,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:43:54,107 INFO L225 Difference]: With dead ends: 855 [2021-10-28 08:43:54,107 INFO L226 Difference]: Without dead ends: 613 [2021-10-28 08:43:54,112 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 08:43:54,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2021-10-28 08:43:54,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 611. [2021-10-28 08:43:54,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 611 states, 610 states have (on average 1.5163934426229508) internal successors, (925), 610 states have internal predecessors, (925), 0 states have call successors, (0), 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 08:43:54,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 925 transitions. [2021-10-28 08:43:54,184 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 925 transitions. Word has length 65 [2021-10-28 08:43:54,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:43:54,184 INFO L470 AbstractCegarLoop]: Abstraction has 611 states and 925 transitions. [2021-10-28 08:43:54,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:43:54,191 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 925 transitions. [2021-10-28 08:43:54,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-10-28 08:43:54,197 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:43:54,198 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:43:54,217 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bafe3d53-df8d-4fce-803a-ff8008445675/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-28 08:43:54,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bafe3d53-df8d-4fce-803a-ff8008445675/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 08:43:54,411 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:43:54,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:43:54,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1540639451, now seen corresponding path program 1 times [2021-10-28 08:43:54,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 08:43:54,414 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [616608356] [2021-10-28 08:43:54,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:43:54,414 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 08:43:54,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bafe3d53-df8d-4fce-803a-ff8008445675/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 08:43:54,416 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bafe3d53-df8d-4fce-803a-ff8008445675/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 08:43:54,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bafe3d53-df8d-4fce-803a-ff8008445675/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-28 08:43:54,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:43:54,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 08:43:54,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:43:55,388 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-28 08:43:55,388 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 08:43:56,011 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-28 08:43:56,011 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 08:43:56,011 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [616608356] [2021-10-28 08:43:56,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [616608356] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 08:43:56,012 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:43:56,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-28 08:43:56,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294573238] [2021-10-28 08:43:56,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 08:43:56,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 08:43:56,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 08:43:56,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 08:43:56,014 INFO L87 Difference]: Start difference. First operand 611 states and 925 transitions. Second operand has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 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 08:43:56,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:43:56,161 INFO L93 Difference]: Finished difference Result 1093 states and 1657 transitions. [2021-10-28 08:43:56,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 08:43:56,162 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 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 08:43:56,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:43:56,169 INFO L225 Difference]: With dead ends: 1093 [2021-10-28 08:43:56,169 INFO L226 Difference]: Without dead ends: 613 [2021-10-28 08:43:56,171 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 08:43:56,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2021-10-28 08:43:56,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 613. [2021-10-28 08:43:56,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 613 states, 612 states have (on average 1.5049019607843137) internal successors, (921), 612 states have internal predecessors, (921), 0 states have call successors, (0), 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 08:43:56,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 921 transitions. [2021-10-28 08:43:56,222 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 921 transitions. Word has length 125 [2021-10-28 08:43:56,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:43:56,225 INFO L470 AbstractCegarLoop]: Abstraction has 613 states and 921 transitions. [2021-10-28 08:43:56,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 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 08:43:56,227 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 921 transitions. [2021-10-28 08:43:56,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-10-28 08:43:56,236 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:43:56,236 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, 1, 1, 1] [2021-10-28 08:43:56,254 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bafe3d53-df8d-4fce-803a-ff8008445675/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-28 08:43:56,453 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bafe3d53-df8d-4fce-803a-ff8008445675/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 08:43:56,453 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:43:56,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:43:56,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1760202500, now seen corresponding path program 1 times [2021-10-28 08:43:56,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 08:43:56,456 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1103310832] [2021-10-28 08:43:56,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:43:56,456 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 08:43:56,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bafe3d53-df8d-4fce-803a-ff8008445675/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 08:43:56,459 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bafe3d53-df8d-4fce-803a-ff8008445675/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 08:43:56,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bafe3d53-df8d-4fce-803a-ff8008445675/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-28 08:43:56,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:43:57,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-28 08:43:57,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:43:57,076 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-28 08:43:57,097 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-28 08:43:57,272 INFO L354 Elim1Store]: treesize reduction 96, result has 16.5 percent of original size [2021-10-28 08:43:57,273 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 22 [2021-10-28 08:43:57,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 08:43:57,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 08:43:57,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 08:43:57,313 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 22 [2021-10-28 08:43:57,440 INFO L354 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2021-10-28 08:43:57,441 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 13 [2021-10-28 08:43:57,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 08:43:57,462 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2021-10-28 08:43:57,520 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 25 [2021-10-28 08:43:57,528 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2021-10-28 08:43:58,066 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2021-10-28 08:43:58,066 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 08:43:58,918 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2021-10-28 08:43:58,918 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 08:43:58,919 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1103310832] [2021-10-28 08:43:58,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1103310832] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 08:43:58,919 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:43:58,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-10-28 08:43:58,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822971595] [2021-10-28 08:43:58,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 08:43:58,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 08:43:58,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 08:43:58,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-28 08:43:58,922 INFO L87 Difference]: Start difference. First operand 613 states and 921 transitions. Second operand has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 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 08:44:08,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:44:08,942 INFO L93 Difference]: Finished difference Result 1223 states and 1838 transitions. [2021-10-28 08:44:08,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 08:44:08,945 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 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 128 [2021-10-28 08:44:08,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:44:08,949 INFO L225 Difference]: With dead ends: 1223 [2021-10-28 08:44:08,949 INFO L226 Difference]: Without dead ends: 613 [2021-10-28 08:44:08,951 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 247 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-10-28 08:44:08,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2021-10-28 08:44:08,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 613. [2021-10-28 08:44:08,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 613 states, 612 states have (on average 1.5032679738562091) internal successors, (920), 612 states have internal predecessors, (920), 0 states have call successors, (0), 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 08:44:08,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 920 transitions. [2021-10-28 08:44:08,976 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 920 transitions. Word has length 128 [2021-10-28 08:44:08,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:44:08,976 INFO L470 AbstractCegarLoop]: Abstraction has 613 states and 920 transitions. [2021-10-28 08:44:08,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 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 08:44:08,977 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 920 transitions. [2021-10-28 08:44:08,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-10-28 08:44:08,979 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:44:08,980 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, 1, 1, 1] [2021-10-28 08:44:09,001 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bafe3d53-df8d-4fce-803a-ff8008445675/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-28 08:44:09,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bafe3d53-df8d-4fce-803a-ff8008445675/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 08:44:09,196 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:44:09,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:44:09,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1330544194, now seen corresponding path program 1 times [2021-10-28 08:44:09,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 08:44:09,199 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1589965466] [2021-10-28 08:44:09,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:44:09,199 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 08:44:09,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bafe3d53-df8d-4fce-803a-ff8008445675/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 08:44:09,200 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bafe3d53-df8d-4fce-803a-ff8008445675/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 08:44:09,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bafe3d53-df8d-4fce-803a-ff8008445675/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-28 08:44:09,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:44:09,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 08:44:09,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:44:09,901 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-28 08:44:09,957 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-10-28 08:44:09,958 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2021-10-28 08:44:10,335 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-10-28 08:44:10,335 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 10 [2021-10-28 08:44:10,604 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-10-28 08:44:10,605 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 08:44:11,138 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-10-28 08:44:11,138 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 08:44:11,138 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1589965466] [2021-10-28 08:44:11,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1589965466] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 08:44:11,138 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:44:11,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 5 [2021-10-28 08:44:11,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429212566] [2021-10-28 08:44:11,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 08:44:11,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 08:44:11,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 08:44:11,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-28 08:44:11,141 INFO L87 Difference]: Start difference. First operand 613 states and 920 transitions. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 0 states have call successors, (0), 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 08:44:15,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:44:15,329 INFO L93 Difference]: Finished difference Result 1420 states and 2131 transitions. [2021-10-28 08:44:15,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 08:44:15,332 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 0 states have call successors, (0), 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 128 [2021-10-28 08:44:15,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:44:15,339 INFO L225 Difference]: With dead ends: 1420 [2021-10-28 08:44:15,339 INFO L226 Difference]: Without dead ends: 817 [2021-10-28 08:44:15,340 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 250 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-28 08:44:15,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 817 states. [2021-10-28 08:44:15,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 817 to 713. [2021-10-28 08:44:15,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 713 states, 712 states have (on average 1.5337078651685394) internal successors, (1092), 712 states have internal predecessors, (1092), 0 states have call successors, (0), 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 08:44:15,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 1092 transitions. [2021-10-28 08:44:15,375 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 1092 transitions. Word has length 128 [2021-10-28 08:44:15,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:44:15,375 INFO L470 AbstractCegarLoop]: Abstraction has 713 states and 1092 transitions. [2021-10-28 08:44:15,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 0 states have call successors, (0), 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 08:44:15,376 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 1092 transitions. [2021-10-28 08:44:15,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-10-28 08:44:15,379 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:44:15,379 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, 1, 1, 1] [2021-10-28 08:44:15,401 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bafe3d53-df8d-4fce-803a-ff8008445675/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-28 08:44:15,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bafe3d53-df8d-4fce-803a-ff8008445675/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 08:44:15,593 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:44:15,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:44:15,594 INFO L85 PathProgramCache]: Analyzing trace with hash -545938624, now seen corresponding path program 1 times [2021-10-28 08:44:15,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 08:44:15,595 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1756864560] [2021-10-28 08:44:15,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:44:15,595 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 08:44:15,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bafe3d53-df8d-4fce-803a-ff8008445675/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 08:44:15,596 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bafe3d53-df8d-4fce-803a-ff8008445675/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 08:44:15,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bafe3d53-df8d-4fce-803a-ff8008445675/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-28 08:44:16,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:44:16,694 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:44:17,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:44:17,838 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-10-28 08:44:17,838 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 08:44:17,839 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 08:44:17,865 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bafe3d53-df8d-4fce-803a-ff8008445675/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-28 08:44:18,065 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bafe3d53-df8d-4fce-803a-ff8008445675/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 08:44:18,067 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2021-10-28 08:44:18,070 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 08:44:18,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 08:44:18 BoogieIcfgContainer [2021-10-28 08:44:18,275 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 08:44:18,276 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 08:44:18,276 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 08:44:18,276 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 08:44:18,277 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:43:50" (3/4) ... [2021-10-28 08:44:18,279 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-28 08:44:18,404 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bafe3d53-df8d-4fce-803a-ff8008445675/bin/uautomizer-UnR33cPsHg/witness.graphml [2021-10-28 08:44:18,404 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 08:44:18,405 INFO L168 Benchmark]: Toolchain (without parser) took 33426.96 ms. Allocated memory was 62.9 MB in the beginning and 121.6 MB in the end (delta: 58.7 MB). Free memory was 40.0 MB in the beginning and 44.0 MB in the end (delta: -4.0 MB). Peak memory consumption was 53.1 MB. Max. memory is 16.1 GB. [2021-10-28 08:44:18,406 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 62.9 MB. Free memory is still 43.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 08:44:18,406 INFO L168 Benchmark]: CACSL2BoogieTranslator took 980.04 ms. Allocated memory is still 62.9 MB. Free memory was 39.8 MB in the beginning and 37.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 20.6 MB. Max. memory is 16.1 GB. [2021-10-28 08:44:18,407 INFO L168 Benchmark]: Boogie Procedure Inliner took 118.74 ms. Allocated memory is still 62.9 MB. Free memory was 37.9 MB in the beginning and 33.2 MB in the end (delta: 4.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-28 08:44:18,407 INFO L168 Benchmark]: Boogie Preprocessor took 87.79 ms. Allocated memory is still 62.9 MB. Free memory was 33.2 MB in the beginning and 26.0 MB in the end (delta: 7.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-28 08:44:18,408 INFO L168 Benchmark]: RCFGBuilder took 4808.54 ms. Allocated memory was 62.9 MB in the beginning and 81.8 MB in the end (delta: 18.9 MB). Free memory was 26.0 MB in the beginning and 46.5 MB in the end (delta: -20.5 MB). Peak memory consumption was 16.3 MB. Max. memory is 16.1 GB. [2021-10-28 08:44:18,408 INFO L168 Benchmark]: TraceAbstraction took 27296.89 ms. Allocated memory was 81.8 MB in the beginning and 121.6 MB in the end (delta: 39.8 MB). Free memory was 46.1 MB in the beginning and 59.9 MB in the end (delta: -13.8 MB). Peak memory consumption was 25.7 MB. Max. memory is 16.1 GB. [2021-10-28 08:44:18,408 INFO L168 Benchmark]: Witness Printer took 128.45 ms. Allocated memory is still 121.6 MB. Free memory was 58.8 MB in the beginning and 44.0 MB in the end (delta: 14.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-28 08:44:18,414 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 62.9 MB. Free memory is still 43.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 980.04 ms. Allocated memory is still 62.9 MB. Free memory was 39.8 MB in the beginning and 37.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 20.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 118.74 ms. Allocated memory is still 62.9 MB. Free memory was 37.9 MB in the beginning and 33.2 MB in the end (delta: 4.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 87.79 ms. Allocated memory is still 62.9 MB. Free memory was 33.2 MB in the beginning and 26.0 MB in the end (delta: 7.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * RCFGBuilder took 4808.54 ms. Allocated memory was 62.9 MB in the beginning and 81.8 MB in the end (delta: 18.9 MB). Free memory was 26.0 MB in the beginning and 46.5 MB in the end (delta: -20.5 MB). Peak memory consumption was 16.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 27296.89 ms. Allocated memory was 81.8 MB in the beginning and 121.6 MB in the end (delta: 39.8 MB). Free memory was 46.1 MB in the beginning and 59.9 MB in the end (delta: -13.8 MB). Peak memory consumption was 25.7 MB. Max. memory is 16.1 GB. * Witness Printer took 128.45 ms. Allocated memory is still 121.6 MB. Free memory was 58.8 MB in the beginning and 44.0 MB in the end (delta: 14.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s 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: 1737]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1054] static int init = 1; [L1055] static SSL_METHOD SSLv3_server_data ; VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1077] SSL *s ; [L1078] int tmp ; [L1082] s = malloc(sizeof(SSL)) [L1083] s->s3 = malloc(sizeof(struct ssl3_state_st)) [L1084] s->ctx = malloc(sizeof(SSL_CTX)) [L1085] s->session = malloc(sizeof(SSL_SESSION)) [L1086] s->state = 8464 [L1088] s->info_callback = (void (*) ()) __VERIFIER_nondet_ulong() [L1089] s->options = __VERIFIER_nondet_ulong() [L1090] s->verify_mode = __VERIFIER_nondet_int() [L1091] EXPR s->session [L1091] (s->session)->peer = (struct x509_st*) __VERIFIER_nondet_ulong() [L1092] EXPR s->s3 [L1092] (s->s3)->tmp.cert_request = __VERIFIER_nondet_int() [L1093] EXPR s->s3 [L1093] (s->s3)->tmp.new_cipher = malloc(sizeof(struct ssl_cipher_st)) [L1094] EXPR s->s3 [L1094] EXPR (s->s3)->tmp.new_cipher [L1094] ((s->s3)->tmp.new_cipher)->algorithms = __VERIFIER_nondet_ulong() [L1095] EXPR s->s3 [L1095] EXPR (s->s3)->tmp.new_cipher [L1095] ((s->s3)->tmp.new_cipher)->algo_strength = __VERIFIER_nondet_ulong() [L1096] COND FALSE !(__VERIFIER_nondet_int()) [L1102] s->cert = malloc(sizeof(struct cert_st)) [L1103] EXPR s->cert [L1103] (s->cert)->pkeys[0].privatekey = (struct evp_pkey_st*) __VERIFIER_nondet_ulong() [L1112] BUF_MEM *buf = (BUF_MEM *)__VERIFIER_nondet_ulong(); [L1113] unsigned long l ; [L1114] unsigned long Time ; [L1115] unsigned long tmp = __VERIFIER_nondet_long() ; [L1116] void (*cb)() ; [L1117] long num1 ; [L1118] int ret ; [L1119] int new_state ; [L1120] int state ; [L1121] int skip ; [L1122] int got_new_session ; [L1123] int tmp___1 = __VERIFIER_nondet_int() ; [L1124] int tmp___2 = __VERIFIER_nondet_int() ; [L1125] int tmp___3 ; [L1126] int tmp___4 ; [L1127] int tmp___5 ; [L1128] int tmp___6 ; [L1129] int tmp___7 ; [L1130] long tmp___8 = __VERIFIER_nondet_long() ; [L1131] int tmp___9 ; [L1132] int tmp___10 ; [L1133] int blastFlag ; [L1137] blastFlag = 0 [L1138] s->hit=__VERIFIER_nondet_int () [L1139] s->state = 8464 [L1140] Time = tmp [L1141] cb = (void (*)())((void *)0) [L1142] ret = -1 [L1143] skip = 0 [L1144] got_new_session = 0 [L1145] EXPR s->info_callback VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1145] COND TRUE (unsigned long )s->info_callback != (unsigned long )((void *)0) [L1146] EXPR s->info_callback [L1146] cb = s->info_callback [L1150] EXPR s->in_handshake [L1150] s->in_handshake += 1 [L1151] COND FALSE !(tmp___1 & 12288) VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1160] EXPR s->cert VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1160] COND FALSE !((unsigned long )s->cert == (unsigned long )((void *)0)) [L1166] COND TRUE 1 VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1168] EXPR s->state [L1168] state = s->state [L1169] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1169] COND FALSE !(s->state == 12292) [L1172] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1172] COND FALSE !(s->state == 16384) [L1175] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1175] COND FALSE !(s->state == 8192) [L1178] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1178] COND FALSE !(s->state == 24576) [L1181] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1181] COND FALSE !(s->state == 8195) [L1184] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1184] COND FALSE !(s->state == 8480) [L1187] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1187] COND FALSE !(s->state == 8481) [L1190] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1190] COND FALSE !(s->state == 8482) [L1193] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1193] COND TRUE s->state == 8464 [L1349] s->shutdown = 0 [L1350] ret = __VERIFIER_nondet_int() [L1351] COND TRUE blastFlag == 0 [L1352] blastFlag = 1 VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1356] COND FALSE !(ret <= 0) [L1361] got_new_session = 1 [L1362] s->state = 8496 [L1363] s->init_num = 0 VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1696] EXPR s->s3 [L1696] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1696] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1725] skip = 0 VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1166] COND TRUE 1 VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1168] EXPR s->state [L1168] state = s->state [L1169] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1169] COND FALSE !(s->state == 12292) [L1172] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1172] COND FALSE !(s->state == 16384) [L1175] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1175] COND FALSE !(s->state == 8192) [L1178] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1178] COND FALSE !(s->state == 24576) [L1181] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1181] COND FALSE !(s->state == 8195) [L1184] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1184] COND FALSE !(s->state == 8480) [L1187] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1187] COND FALSE !(s->state == 8481) [L1190] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1190] COND FALSE !(s->state == 8482) [L1193] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1193] COND FALSE !(s->state == 8464) [L1196] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1196] COND FALSE !(s->state == 8465) [L1199] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1199] COND FALSE !(s->state == 8466) [L1202] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1202] COND TRUE s->state == 8496 [L1367] ret = __VERIFIER_nondet_int() [L1368] COND TRUE blastFlag == 1 [L1369] blastFlag = 2 VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1373] COND FALSE !(ret <= 0) [L1378] s->hit VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1378] COND TRUE s->hit [L1379] s->state = 8656 VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1383] s->init_num = 0 VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1696] EXPR s->s3 [L1696] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1696] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1725] skip = 0 VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1166] COND TRUE 1 VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1168] EXPR s->state [L1168] state = s->state [L1169] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1169] COND FALSE !(s->state == 12292) [L1172] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1172] COND FALSE !(s->state == 16384) [L1175] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1175] COND FALSE !(s->state == 8192) [L1178] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1178] COND FALSE !(s->state == 24576) [L1181] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1181] COND FALSE !(s->state == 8195) [L1184] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1184] COND FALSE !(s->state == 8480) [L1187] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1187] COND FALSE !(s->state == 8481) [L1190] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1190] COND FALSE !(s->state == 8482) [L1193] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1193] COND FALSE !(s->state == 8464) [L1196] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1196] COND FALSE !(s->state == 8465) [L1199] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1199] COND FALSE !(s->state == 8466) [L1202] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1202] COND FALSE !(s->state == 8496) [L1205] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1205] COND FALSE !(s->state == 8497) [L1208] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1208] COND FALSE !(s->state == 8512) [L1211] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1211] COND FALSE !(s->state == 8513) [L1214] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1214] COND FALSE !(s->state == 8528) [L1217] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1217] COND FALSE !(s->state == 8529) [L1220] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1220] COND FALSE !(s->state == 8544) [L1223] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1223] COND FALSE !(s->state == 8545) [L1226] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1226] COND FALSE !(s->state == 8560) [L1229] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1229] COND FALSE !(s->state == 8561) [L1232] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1232] COND FALSE !(s->state == 8448) [L1235] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1235] COND FALSE !(s->state == 8576) [L1238] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1238] COND FALSE !(s->state == 8577) [L1241] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1241] COND FALSE !(s->state == 8592) [L1244] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1244] COND FALSE !(s->state == 8593) [L1247] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1247] COND FALSE !(s->state == 8608) [L1250] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1250] COND FALSE !(s->state == 8609) [L1253] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1253] COND FALSE !(s->state == 8640) [L1256] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1256] COND FALSE !(s->state == 8641) [L1259] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1259] COND TRUE s->state == 8656 [L1583] EXPR s->session [L1583] EXPR s->s3 [L1583] EXPR (s->s3)->tmp.new_cipher [L1583] (s->session)->cipher = (s->s3)->tmp.new_cipher [L1584] tmp___9 = __VERIFIER_nondet_int() [L1585] COND FALSE !(! tmp___9) [L1591] ret = __VERIFIER_nondet_int() [L1592] COND TRUE blastFlag == 2 [L1593] blastFlag = 5 VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1597] COND FALSE !(ret <= 0) [L1602] s->state = 8672 [L1603] s->init_num = 0 [L1604] tmp___10 = __VERIFIER_nondet_int() [L1605] COND FALSE !(! tmp___10) VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1696] EXPR s->s3 [L1696] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1696] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1725] skip = 0 VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1166] COND TRUE 1 VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1168] EXPR s->state [L1168] state = s->state [L1169] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1169] COND FALSE !(s->state == 12292) [L1172] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1172] COND FALSE !(s->state == 16384) [L1175] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1175] COND FALSE !(s->state == 8192) [L1178] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1178] COND FALSE !(s->state == 24576) [L1181] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1181] COND FALSE !(s->state == 8195) [L1184] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1184] COND FALSE !(s->state == 8480) [L1187] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1187] COND FALSE !(s->state == 8481) [L1190] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1190] COND FALSE !(s->state == 8482) [L1193] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1193] COND FALSE !(s->state == 8464) [L1196] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1196] COND FALSE !(s->state == 8465) [L1199] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1199] COND FALSE !(s->state == 8466) [L1202] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1202] COND FALSE !(s->state == 8496) [L1205] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1205] COND FALSE !(s->state == 8497) [L1208] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1208] COND FALSE !(s->state == 8512) [L1211] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1211] COND FALSE !(s->state == 8513) [L1214] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1214] COND FALSE !(s->state == 8528) [L1217] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1217] COND FALSE !(s->state == 8529) [L1220] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1220] COND FALSE !(s->state == 8544) [L1223] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1223] COND FALSE !(s->state == 8545) [L1226] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1226] COND FALSE !(s->state == 8560) [L1229] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1229] COND FALSE !(s->state == 8561) [L1232] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1232] COND FALSE !(s->state == 8448) [L1235] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1235] COND FALSE !(s->state == 8576) [L1238] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1238] COND FALSE !(s->state == 8577) [L1241] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1241] COND FALSE !(s->state == 8592) [L1244] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1244] COND FALSE !(s->state == 8593) [L1247] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1247] COND FALSE !(s->state == 8608) [L1250] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1250] COND FALSE !(s->state == 8609) [L1253] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1253] COND FALSE !(s->state == 8640) [L1256] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1256] COND FALSE !(s->state == 8641) [L1259] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1259] COND FALSE !(s->state == 8656) [L1262] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1262] COND FALSE !(s->state == 8657) [L1265] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1265] COND TRUE s->state == 8672 [L1614] ret = __VERIFIER_nondet_int() [L1615] COND FALSE !(blastFlag == 4) VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1618] COND TRUE blastFlag == 5 VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1737] reach_error() VAL [init=1, SSLv3_server_data={-1073741793:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 147 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 27.0s, OverallIterations: 6, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 14.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 1393 SDtfs, 1235 SDslu, 2054 SDs, 0 SdLazy, 542 SolverSat, 52 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 13.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 979 GetRequests, 959 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=713occurred in iteration=5, InterpolantAutomatonStates: 23, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 5 MinimizatonAttempts, 108 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 6.3s InterpolantComputationTime, 621 NumberOfCodeBlocks, 621 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 976 ConstructedInterpolants, 1 QuantifiedInterpolants, 2280 SizeOfPredicates, 15 NumberOfNonLiveVariables, 1387 ConjunctsInSsa, 25 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 636/636 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 08:44:18,480 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bafe3d53-df8d-4fce-803a-ff8008445675/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...