./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2018/Problem12.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_935f1ccf-16b9-4375-8fa0-88047544fb92/bin/uautomizer-tBqnrhUYjU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_935f1ccf-16b9-4375-8fa0-88047544fb92/bin/uautomizer-tBqnrhUYjU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_935f1ccf-16b9-4375-8fa0-88047544fb92/bin/uautomizer-tBqnrhUYjU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_935f1ccf-16b9-4375-8fa0-88047544fb92/bin/uautomizer-tBqnrhUYjU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2018/Problem12.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_935f1ccf-16b9-4375-8fa0-88047544fb92/bin/uautomizer-tBqnrhUYjU/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_935f1ccf-16b9-4375-8fa0-88047544fb92/bin/uautomizer-tBqnrhUYjU --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 bc374151ad7cbf5164d124b31f1469c11fb09f7ea899f596b5df5ff69b5f22f3 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-02 22:30:24,150 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 22:30:24,154 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 22:30:24,229 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 22:30:24,229 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 22:30:24,236 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 22:30:24,238 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 22:30:24,243 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 22:30:24,246 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 22:30:24,253 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 22:30:24,255 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 22:30:24,257 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 22:30:24,258 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 22:30:24,261 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 22:30:24,264 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 22:30:24,271 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 22:30:24,273 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 22:30:24,275 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 22:30:24,278 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 22:30:24,292 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 22:30:24,294 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 22:30:24,296 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 22:30:24,301 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 22:30:24,303 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 22:30:24,315 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 22:30:24,316 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 22:30:24,317 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 22:30:24,320 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 22:30:24,321 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 22:30:24,323 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 22:30:24,323 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 22:30:24,324 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 22:30:24,327 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 22:30:24,329 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 22:30:24,331 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 22:30:24,331 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 22:30:24,332 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 22:30:24,333 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 22:30:24,333 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 22:30:24,334 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 22:30:24,335 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 22:30:24,336 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_935f1ccf-16b9-4375-8fa0-88047544fb92/bin/uautomizer-tBqnrhUYjU/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-02 22:30:24,398 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 22:30:24,398 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 22:30:24,399 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 22:30:24,399 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 22:30:24,402 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 22:30:24,402 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 22:30:24,402 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 22:30:24,403 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 22:30:24,403 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-02 22:30:24,403 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 22:30:24,405 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-02 22:30:24,405 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 22:30:24,405 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 22:30:24,406 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 22:30:24,406 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 22:30:24,406 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-02 22:30:24,407 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 22:30:24,407 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 22:30:24,407 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 22:30:24,408 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 22:30:24,408 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 22:30:24,408 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 22:30:24,408 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:30:24,409 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 22:30:24,409 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 22:30:24,409 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 22:30:24,410 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 22:30:24,410 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 22:30:24,410 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 22:30:24,412 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 22:30:24,413 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 22:30:24,413 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 22:30:24,413 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_935f1ccf-16b9-4375-8fa0-88047544fb92/bin/uautomizer-tBqnrhUYjU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_935f1ccf-16b9-4375-8fa0-88047544fb92/bin/uautomizer-tBqnrhUYjU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bc374151ad7cbf5164d124b31f1469c11fb09f7ea899f596b5df5ff69b5f22f3 [2021-11-02 22:30:24,753 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 22:30:24,779 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 22:30:24,782 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 22:30:24,784 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 22:30:24,785 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 22:30:24,786 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_935f1ccf-16b9-4375-8fa0-88047544fb92/bin/uautomizer-tBqnrhUYjU/../../sv-benchmarks/c/eca-rers2018/Problem12.c [2021-11-02 22:30:24,900 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_935f1ccf-16b9-4375-8fa0-88047544fb92/bin/uautomizer-tBqnrhUYjU/data/a91e66c1b/264bb0339a634045a6cf00e8fcbe5a0f/FLAGd653a2105 [2021-11-02 22:30:26,319 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 22:30:26,320 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_935f1ccf-16b9-4375-8fa0-88047544fb92/sv-benchmarks/c/eca-rers2018/Problem12.c [2021-11-02 22:30:26,407 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_935f1ccf-16b9-4375-8fa0-88047544fb92/bin/uautomizer-tBqnrhUYjU/data/a91e66c1b/264bb0339a634045a6cf00e8fcbe5a0f/FLAGd653a2105 [2021-11-02 22:30:26,901 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_935f1ccf-16b9-4375-8fa0-88047544fb92/bin/uautomizer-tBqnrhUYjU/data/a91e66c1b/264bb0339a634045a6cf00e8fcbe5a0f [2021-11-02 22:30:26,905 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 22:30:26,908 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 22:30:26,913 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 22:30:26,914 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 22:30:26,918 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 22:30:26,919 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:30:26" (1/1) ... [2021-11-02 22:30:26,922 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2de28b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:30:26, skipping insertion in model container [2021-11-02 22:30:26,923 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:30:26" (1/1) ... [2021-11-02 22:30:26,932 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 22:30:27,243 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 22:30:27,622 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_935f1ccf-16b9-4375-8fa0-88047544fb92/sv-benchmarks/c/eca-rers2018/Problem12.c[778,791] [2021-11-02 22:30:27,640 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_935f1ccf-16b9-4375-8fa0-88047544fb92/sv-benchmarks/c/eca-rers2018/Problem12.c[817,830] [2021-11-02 22:30:32,024 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:30:32,048 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 22:30:32,062 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_935f1ccf-16b9-4375-8fa0-88047544fb92/sv-benchmarks/c/eca-rers2018/Problem12.c[778,791] [2021-11-02 22:30:32,062 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_935f1ccf-16b9-4375-8fa0-88047544fb92/sv-benchmarks/c/eca-rers2018/Problem12.c[817,830] [2021-11-02 22:30:33,486 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:30:33,795 INFO L208 MainTranslator]: Completed translation [2021-11-02 22:30:33,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:30:33 WrapperNode [2021-11-02 22:30:33,796 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 22:30:33,798 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 22:30:33,798 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 22:30:33,798 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 22:30:33,807 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:30:33" (1/1) ... [2021-11-02 22:30:34,224 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:30:33" (1/1) ... [2021-11-02 22:30:37,048 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 22:30:37,050 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 22:30:37,050 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 22:30:37,050 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 22:30:37,063 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:30:33" (1/1) ... [2021-11-02 22:30:37,063 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:30:33" (1/1) ... [2021-11-02 22:30:37,830 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:30:33" (1/1) ... [2021-11-02 22:30:37,832 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:30:33" (1/1) ... [2021-11-02 22:30:39,096 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:30:33" (1/1) ... [2021-11-02 22:30:39,265 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:30:33" (1/1) ... [2021-11-02 22:30:39,557 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:30:33" (1/1) ... [2021-11-02 22:30:39,967 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 22:30:39,968 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 22:30:39,969 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 22:30:39,969 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 22:30:39,973 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:30:33" (1/1) ... [2021-11-02 22:30:39,984 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:30:39,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_935f1ccf-16b9-4375-8fa0-88047544fb92/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:30:40,022 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_935f1ccf-16b9-4375-8fa0-88047544fb92/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-02 22:30:40,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_935f1ccf-16b9-4375-8fa0-88047544fb92/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-02 22:30:40,089 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 22:30:40,089 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-02 22:30:40,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 22:30:40,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 22:30:40,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 22:33:36,268 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 22:33:36,268 INFO L299 CfgBuilder]: Removed 669 assume(true) statements. [2021-11-02 22:33:36,284 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:33:36 BoogieIcfgContainer [2021-11-02 22:33:36,284 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 22:33:36,286 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 22:33:36,287 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 22:33:36,291 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 22:33:36,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 10:30:26" (1/3) ... [2021-11-02 22:33:36,292 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ff6b2a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:33:36, skipping insertion in model container [2021-11-02 22:33:36,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:30:33" (2/3) ... [2021-11-02 22:33:36,293 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ff6b2a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:33:36, skipping insertion in model container [2021-11-02 22:33:36,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:33:36" (3/3) ... [2021-11-02 22:33:36,295 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12.c [2021-11-02 22:33:36,302 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 22:33:36,302 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 100 error locations. [2021-11-02 22:33:36,400 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 22:33:36,408 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 [2021-11-02 22:33:36,408 INFO L340 AbstractCegarLoop]: Starting to check reachability of 100 error locations. [2021-11-02 22:33:36,587 INFO L276 IsEmpty]: Start isEmpty. Operand has 9313 states, 9212 states have (on average 1.5693660442900565) internal successors, (14457), 9312 states have internal predecessors, (14457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:33:36,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-02 22:33:36,628 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:33:36,629 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] [2021-11-02 22:33:36,630 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 97 more)] === [2021-11-02 22:33:36,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:33:36,638 INFO L85 PathProgramCache]: Analyzing trace with hash 806631540, now seen corresponding path program 1 times [2021-11-02 22:33:36,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:33:36,651 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373934455] [2021-11-02 22:33:36,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:33:36,652 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:33:37,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:33:37,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:33:37,360 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:33:37,360 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373934455] [2021-11-02 22:33:37,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373934455] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:33:37,361 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:33:37,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 22:33:37,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425711837] [2021-11-02 22:33:37,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:33:37,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:33:37,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:33:37,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:33:37,431 INFO L87 Difference]: Start difference. First operand has 9313 states, 9212 states have (on average 1.5693660442900565) internal successors, (14457), 9312 states have internal predecessors, (14457), 0 states have call successors, (0), 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 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:33:38,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:33:38,013 INFO L93 Difference]: Finished difference Result 18628 states and 28919 transitions. [2021-11-02 22:33:38,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 22:33:38,016 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2021-11-02 22:33:38,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:33:38,111 INFO L225 Difference]: With dead ends: 18628 [2021-11-02 22:33:38,112 INFO L226 Difference]: Without dead ends: 9314 [2021-11-02 22:33:38,141 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 [2021-11-02 22:33:38,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9314 states. [2021-11-02 22:33:38,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9314 to 9313. [2021-11-02 22:33:38,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9313 states, 9213 states have (on average 1.5504178877672854) internal successors, (14284), 9312 states have internal predecessors, (14284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:33:38,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9313 states to 9313 states and 14284 transitions. [2021-11-02 22:33:38,570 INFO L78 Accepts]: Start accepts. Automaton has 9313 states and 14284 transitions. Word has length 38 [2021-11-02 22:33:38,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:33:38,572 INFO L470 AbstractCegarLoop]: Abstraction has 9313 states and 14284 transitions. [2021-11-02 22:33:38,573 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:33:38,574 INFO L276 IsEmpty]: Start isEmpty. Operand 9313 states and 14284 transitions. [2021-11-02 22:33:38,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-02 22:33:38,580 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:33:38,581 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] [2021-11-02 22:33:38,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 22:33:38,582 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 97 more)] === [2021-11-02 22:33:38,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:33:38,586 INFO L85 PathProgramCache]: Analyzing trace with hash -473232138, now seen corresponding path program 1 times [2021-11-02 22:33:38,586 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:33:38,587 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877536099] [2021-11-02 22:33:38,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:33:38,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:33:38,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:33:38,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:33:38,873 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:33:38,873 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877536099] [2021-11-02 22:33:38,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877536099] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:33:38,874 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:33:38,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:33:38,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903472884] [2021-11-02 22:33:38,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:33:38,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:33:38,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:33:38,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:33:38,881 INFO L87 Difference]: Start difference. First operand 9313 states and 14284 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:38:19,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:38:19,489 INFO L93 Difference]: Finished difference Result 27940 states and 42856 transitions. [2021-11-02 22:38:19,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 22:38:19,490 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2021-11-02 22:38:19,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:38:19,587 INFO L225 Difference]: With dead ends: 27940 [2021-11-02 22:38:19,587 INFO L226 Difference]: Without dead ends: 18629 [2021-11-02 22:38:19,601 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:38:19,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18629 states. [2021-11-02 22:38:20,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18629 to 18299. [2021-11-02 22:38:20,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18299 states, 18199 states have (on average 1.5536018462552887) internal successors, (28274), 18298 states have internal predecessors, (28274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:38:20,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18299 states to 18299 states and 28274 transitions. [2021-11-02 22:38:20,128 INFO L78 Accepts]: Start accepts. Automaton has 18299 states and 28274 transitions. Word has length 38 [2021-11-02 22:38:20,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:38:20,129 INFO L470 AbstractCegarLoop]: Abstraction has 18299 states and 28274 transitions. [2021-11-02 22:38:20,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:38:20,130 INFO L276 IsEmpty]: Start isEmpty. Operand 18299 states and 28274 transitions. [2021-11-02 22:38:20,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-02 22:38:20,298 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:38:20,298 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] [2021-11-02 22:38:20,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 22:38:20,298 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 97 more)] === [2021-11-02 22:38:20,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:38:20,299 INFO L85 PathProgramCache]: Analyzing trace with hash -215066700, now seen corresponding path program 1 times [2021-11-02 22:38:20,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:38:20,299 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800725592] [2021-11-02 22:38:20,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:38:20,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:38:20,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:38:20,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:38:20,486 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:38:20,487 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800725592] [2021-11-02 22:38:20,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800725592] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:38:20,488 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:38:20,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 22:38:20,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118072373] [2021-11-02 22:38:20,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:38:20,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:38:20,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:38:20,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:38:20,497 INFO L87 Difference]: Start difference. First operand 18299 states and 28274 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 2 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:38:31,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:38:31,157 INFO L93 Difference]: Finished difference Result 54883 states and 84813 transitions. [2021-11-02 22:38:31,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:38:31,157 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 2 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2021-11-02 22:38:31,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:38:31,227 INFO L225 Difference]: With dead ends: 54883 [2021-11-02 22:38:31,227 INFO L226 Difference]: Without dead ends: 36586 [2021-11-02 22:38:31,254 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:38:31,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36586 states. [2021-11-02 22:38:31,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36586 to 36390. [2021-11-02 22:38:31,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36390 states, 36290 states have (on average 1.5549462661890328) internal successors, (56429), 36389 states have internal predecessors, (56429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:38:32,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36390 states to 36390 states and 56429 transitions. [2021-11-02 22:38:32,220 INFO L78 Accepts]: Start accepts. Automaton has 36390 states and 56429 transitions. Word has length 38 [2021-11-02 22:38:32,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:38:32,228 INFO L470 AbstractCegarLoop]: Abstraction has 36390 states and 56429 transitions. [2021-11-02 22:38:32,229 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 2 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:38:32,229 INFO L276 IsEmpty]: Start isEmpty. Operand 36390 states and 56429 transitions. [2021-11-02 22:38:32,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-02 22:38:32,234 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:38:32,234 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] [2021-11-02 22:38:32,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-02 22:38:32,235 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 97 more)] === [2021-11-02 22:38:32,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:38:32,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1922906878, now seen corresponding path program 1 times [2021-11-02 22:38:32,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:38:32,236 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736902013] [2021-11-02 22:38:32,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:38:32,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:38:32,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:38:32,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:38:32,361 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:38:32,365 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736902013] [2021-11-02 22:38:32,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736902013] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:38:32,366 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:38:32,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 22:38:32,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382052663] [2021-11-02 22:38:32,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:38:32,367 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:38:32,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:38:32,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:38:32,368 INFO L87 Difference]: Start difference. First operand 36390 states and 56429 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:39:01,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:39:01,627 INFO L93 Difference]: Finished difference Result 108286 states and 167937 transitions. [2021-11-02 22:39:01,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:39:01,628 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-11-02 22:39:01,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:39:01,721 INFO L225 Difference]: With dead ends: 108286 [2021-11-02 22:39:01,721 INFO L226 Difference]: Without dead ends: 71898 [2021-11-02 22:39:01,763 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:39:01,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71898 states. [2021-11-02 22:39:02,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71898 to 71634. [2021-11-02 22:39:02,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71634 states, 71534 states have (on average 1.5560712388514553) internal successors, (111312), 71633 states have internal predecessors, (111312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:39:03,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71634 states to 71634 states and 111312 transitions. [2021-11-02 22:39:03,074 INFO L78 Accepts]: Start accepts. Automaton has 71634 states and 111312 transitions. Word has length 39 [2021-11-02 22:39:03,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:39:03,077 INFO L470 AbstractCegarLoop]: Abstraction has 71634 states and 111312 transitions. [2021-11-02 22:39:03,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:39:03,078 INFO L276 IsEmpty]: Start isEmpty. Operand 71634 states and 111312 transitions. [2021-11-02 22:39:03,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-02 22:39:03,085 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:39:03,085 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] [2021-11-02 22:39:03,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-02 22:39:03,086 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 97 more)] === [2021-11-02 22:39:03,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:39:03,087 INFO L85 PathProgramCache]: Analyzing trace with hash -519388930, now seen corresponding path program 1 times [2021-11-02 22:39:03,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:39:03,087 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144094390] [2021-11-02 22:39:03,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:39:03,088 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:39:03,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:39:03,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:39:03,259 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:39:03,260 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144094390] [2021-11-02 22:39:03,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144094390] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:39:03,260 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:39:03,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 22:39:03,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36719873] [2021-11-02 22:39:03,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:39:03,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:39:03,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:39:03,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:39:03,262 INFO L87 Difference]: Start difference. First operand 71634 states and 111312 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 2 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:39:12,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:39:12,352 INFO L93 Difference]: Finished difference Result 214590 states and 333466 transitions. [2021-11-02 22:39:12,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:39:12,352 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 2 states have internal predecessors, (40), 0 states have call successors, (0), 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 40 [2021-11-02 22:39:12,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:39:12,580 INFO L225 Difference]: With dead ends: 214590 [2021-11-02 22:39:12,580 INFO L226 Difference]: Without dead ends: 142958 [2021-11-02 22:39:12,634 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:39:12,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142958 states. [2021-11-02 22:39:14,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142958 to 142742. [2021-11-02 22:39:15,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142742 states, 142642 states have (on average 1.5564980861176931) internal successors, (222022), 142741 states have internal predecessors, (222022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:39:15,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142742 states to 142742 states and 222022 transitions. [2021-11-02 22:39:15,785 INFO L78 Accepts]: Start accepts. Automaton has 142742 states and 222022 transitions. Word has length 40 [2021-11-02 22:39:15,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:39:15,785 INFO L470 AbstractCegarLoop]: Abstraction has 142742 states and 222022 transitions. [2021-11-02 22:39:15,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 2 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:39:15,791 INFO L276 IsEmpty]: Start isEmpty. Operand 142742 states and 222022 transitions. [2021-11-02 22:39:15,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-02 22:39:15,812 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:39:15,812 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] [2021-11-02 22:39:15,813 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-02 22:39:15,813 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 97 more)] === [2021-11-02 22:39:15,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:39:15,813 INFO L85 PathProgramCache]: Analyzing trace with hash -915283168, now seen corresponding path program 1 times [2021-11-02 22:39:15,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:39:15,814 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989399582] [2021-11-02 22:39:15,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:39:15,814 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:39:15,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:39:15,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:39:15,912 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:39:15,912 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989399582] [2021-11-02 22:39:15,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989399582] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:39:15,913 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:39:15,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 22:39:15,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218489880] [2021-11-02 22:39:15,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:39:15,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:39:15,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:39:15,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:39:15,915 INFO L87 Difference]: Start difference. First operand 142742 states and 222022 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:39:32,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:39:32,823 INFO L93 Difference]: Finished difference Result 357396 states and 555817 transitions. [2021-11-02 22:39:32,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:39:32,857 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2021-11-02 22:39:32,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:39:33,241 INFO L225 Difference]: With dead ends: 357396 [2021-11-02 22:39:33,241 INFO L226 Difference]: Without dead ends: 285464 [2021-11-02 22:39:33,325 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:39:33,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285464 states. [2021-11-02 22:39:36,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285464 to 285054. [2021-11-02 22:39:36,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285054 states, 284954 states have (on average 1.5564126139657628) internal successors, (443506), 285053 states have internal predecessors, (443506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:39:37,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285054 states to 285054 states and 443506 transitions. [2021-11-02 22:39:37,847 INFO L78 Accepts]: Start accepts. Automaton has 285054 states and 443506 transitions. Word has length 42 [2021-11-02 22:39:37,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:39:37,847 INFO L470 AbstractCegarLoop]: Abstraction has 285054 states and 443506 transitions. [2021-11-02 22:39:37,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:39:37,848 INFO L276 IsEmpty]: Start isEmpty. Operand 285054 states and 443506 transitions. [2021-11-02 22:39:37,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-02 22:39:37,855 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:39:37,855 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] [2021-11-02 22:39:37,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-02 22:39:37,856 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 97 more)] === [2021-11-02 22:39:37,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:39:37,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1691032881, now seen corresponding path program 1 times [2021-11-02 22:39:37,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:39:37,857 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683608398] [2021-11-02 22:39:37,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:39:37,857 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:39:37,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:39:37,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:39:37,958 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:39:37,958 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683608398] [2021-11-02 22:39:37,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683608398] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:39:37,958 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:39:37,958 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 22:39:37,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882594067] [2021-11-02 22:39:37,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:39:37,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:39:37,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:39:37,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:39:37,960 INFO L87 Difference]: Start difference. First operand 285054 states and 443506 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 2 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:43:10,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:43:10,876 INFO L93 Difference]: Finished difference Result 740746 states and 1152776 transitions. [2021-11-02 22:43:10,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:43:10,877 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 2 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2021-11-02 22:43:10,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:43:11,632 INFO L225 Difference]: With dead ends: 740746 [2021-11-02 22:43:11,632 INFO L226 Difference]: Without dead ends: 455694 [2021-11-02 22:43:11,779 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:43:12,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455694 states. [2021-11-02 22:43:17,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455694 to 449502. [2021-11-02 22:43:17,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449502 states, 449402 states have (on average 1.5508742729226839) internal successors, (696966), 449501 states have internal predecessors, (696966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:43:20,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449502 states to 449502 states and 696966 transitions. [2021-11-02 22:43:20,305 INFO L78 Accepts]: Start accepts. Automaton has 449502 states and 696966 transitions. Word has length 43 [2021-11-02 22:43:20,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:43:20,306 INFO L470 AbstractCegarLoop]: Abstraction has 449502 states and 696966 transitions. [2021-11-02 22:43:20,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 2 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:43:20,306 INFO L276 IsEmpty]: Start isEmpty. Operand 449502 states and 696966 transitions. [2021-11-02 22:43:20,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-02 22:43:20,331 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:43:20,331 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:43:20,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-02 22:43:20,332 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 97 more)] === [2021-11-02 22:43:20,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:43:20,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1991222220, now seen corresponding path program 1 times [2021-11-02 22:43:20,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:43:20,333 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699299743] [2021-11-02 22:43:20,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:43:20,333 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:43:20,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:43:20,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:43:20,562 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:43:20,562 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699299743] [2021-11-02 22:43:20,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699299743] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:43:20,562 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:43:20,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:43:20,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744917635] [2021-11-02 22:43:20,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:43:20,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:43:20,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:43:20,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:43:20,564 INFO L87 Difference]: Start difference. First operand 449502 states and 696966 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)