./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label49+token_ring.09.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfcb2b3d-d0ec-42e6-892a-c78fe1fe2c35/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfcb2b3d-d0ec-42e6-892a-c78fe1fe2c35/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfcb2b3d-d0ec-42e6-892a-c78fe1fe2c35/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfcb2b3d-d0ec-42e6-892a-c78fe1fe2c35/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label49+token_ring.09.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfcb2b3d-d0ec-42e6-892a-c78fe1fe2c35/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfcb2b3d-d0ec-42e6-892a-c78fe1fe2c35/bin/uautomizer-DQz5hQGWxF --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 9c44d114d56c1766d1cbfa8e225f5145dcce7e8e615df451e987409645be250c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 07:32:40,366 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 07:32:40,369 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 07:32:40,417 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 07:32:40,418 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 07:32:40,423 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 07:32:40,425 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 07:32:40,429 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 07:32:40,431 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 07:32:40,439 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 07:32:40,441 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 07:32:40,442 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 07:32:40,443 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 07:32:40,446 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 07:32:40,449 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 07:32:40,457 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 07:32:40,459 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 07:32:40,461 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 07:32:40,463 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 07:32:40,470 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 07:32:40,472 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 07:32:40,474 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 07:32:40,477 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 07:32:40,478 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 07:32:40,484 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 07:32:40,485 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 07:32:40,486 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 07:32:40,488 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 07:32:40,488 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 07:32:40,490 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 07:32:40,490 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 07:32:40,491 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 07:32:40,493 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 07:32:40,494 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 07:32:40,496 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 07:32:40,496 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 07:32:40,497 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 07:32:40,497 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 07:32:40,497 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 07:32:40,498 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 07:32:40,499 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 07:32:40,500 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfcb2b3d-d0ec-42e6-892a-c78fe1fe2c35/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-20 07:32:40,548 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 07:32:40,549 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 07:32:40,550 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 07:32:40,550 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 07:32:40,557 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 07:32:40,558 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 07:32:40,558 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 07:32:40,558 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 07:32:40,559 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 07:32:40,559 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 07:32:40,560 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 07:32:40,560 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 07:32:40,561 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 07:32:40,561 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 07:32:40,561 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 07:32:40,561 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 07:32:40,561 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 07:32:40,562 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 07:32:40,562 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 07:32:40,562 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 07:32:40,562 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 07:32:40,563 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 07:32:40,563 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 07:32:40,563 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 07:32:40,563 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 07:32:40,564 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 07:32:40,564 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 07:32:40,564 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 07:32:40,564 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 07:32:40,566 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 07:32:40,566 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 07:32:40,566 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 07:32:40,567 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 07:32:40,567 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 07:32:40,567 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_cfcb2b3d-d0ec-42e6-892a-c78fe1fe2c35/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfcb2b3d-d0ec-42e6-892a-c78fe1fe2c35/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9c44d114d56c1766d1cbfa8e225f5145dcce7e8e615df451e987409645be250c [2021-11-20 07:32:40,923 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 07:32:40,947 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 07:32:40,950 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 07:32:40,951 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 07:32:40,953 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 07:32:40,955 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfcb2b3d-d0ec-42e6-892a-c78fe1fe2c35/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/combinations/Problem05_label49+token_ring.09.cil-1.c [2021-11-20 07:32:41,020 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfcb2b3d-d0ec-42e6-892a-c78fe1fe2c35/bin/uautomizer-DQz5hQGWxF/data/5c8b1eebd/66a3ee3d00b44b51a3dae61122455ad7/FLAG0b7653070 [2021-11-20 07:32:42,116 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 07:32:42,117 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfcb2b3d-d0ec-42e6-892a-c78fe1fe2c35/sv-benchmarks/c/combinations/Problem05_label49+token_ring.09.cil-1.c [2021-11-20 07:32:42,165 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfcb2b3d-d0ec-42e6-892a-c78fe1fe2c35/bin/uautomizer-DQz5hQGWxF/data/5c8b1eebd/66a3ee3d00b44b51a3dae61122455ad7/FLAG0b7653070 [2021-11-20 07:32:42,508 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfcb2b3d-d0ec-42e6-892a-c78fe1fe2c35/bin/uautomizer-DQz5hQGWxF/data/5c8b1eebd/66a3ee3d00b44b51a3dae61122455ad7 [2021-11-20 07:32:42,511 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 07:32:42,512 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 07:32:42,513 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 07:32:42,513 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 07:32:42,517 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 07:32:42,518 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:32:42" (1/1) ... [2021-11-20 07:32:42,519 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15b82db7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:32:42, skipping insertion in model container [2021-11-20 07:32:42,519 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:32:42" (1/1) ... [2021-11-20 07:32:42,526 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 07:32:42,815 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 07:32:45,177 WARN L230 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_cfcb2b3d-d0ec-42e6-892a-c78fe1fe2c35/sv-benchmarks/c/combinations/Problem05_label49+token_ring.09.cil-1.c[380593,380606] [2021-11-20 07:32:45,212 WARN L230 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_cfcb2b3d-d0ec-42e6-892a-c78fe1fe2c35/sv-benchmarks/c/combinations/Problem05_label49+token_ring.09.cil-1.c[383339,383352] [2021-11-20 07:32:45,525 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:32:45,536 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 07:32:46,806 WARN L230 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_cfcb2b3d-d0ec-42e6-892a-c78fe1fe2c35/sv-benchmarks/c/combinations/Problem05_label49+token_ring.09.cil-1.c[380593,380606] [2021-11-20 07:32:46,810 WARN L230 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_cfcb2b3d-d0ec-42e6-892a-c78fe1fe2c35/sv-benchmarks/c/combinations/Problem05_label49+token_ring.09.cil-1.c[383339,383352] [2021-11-20 07:32:46,829 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:32:46,905 INFO L208 MainTranslator]: Completed translation [2021-11-20 07:32:46,905 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:32:46 WrapperNode [2021-11-20 07:32:46,905 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 07:32:46,907 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 07:32:46,907 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 07:32:46,907 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 07:32:46,914 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:32:46" (1/1) ... [2021-11-20 07:32:47,022 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:32:46" (1/1) ... [2021-11-20 07:32:47,464 INFO L137 Inliner]: procedures = 62, calls = 68, calls flagged for inlining = 40, calls inlined = 40, statements flattened = 13025 [2021-11-20 07:32:47,465 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 07:32:47,466 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 07:32:47,466 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 07:32:47,466 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 07:32:47,475 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:32:46" (1/1) ... [2021-11-20 07:32:47,475 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:32:46" (1/1) ... [2021-11-20 07:32:47,519 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:32:46" (1/1) ... [2021-11-20 07:32:47,519 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:32:46" (1/1) ... [2021-11-20 07:32:47,844 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:32:46" (1/1) ... [2021-11-20 07:32:47,897 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:32:46" (1/1) ... [2021-11-20 07:32:47,928 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:32:46" (1/1) ... [2021-11-20 07:32:48,180 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 07:32:48,181 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 07:32:48,181 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 07:32:48,182 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 07:32:48,185 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:32:46" (1/1) ... [2021-11-20 07:32:48,193 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 07:32:48,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfcb2b3d-d0ec-42e6-892a-c78fe1fe2c35/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:32:48,254 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfcb2b3d-d0ec-42e6-892a-c78fe1fe2c35/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 07:32:48,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfcb2b3d-d0ec-42e6-892a-c78fe1fe2c35/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 07:32:48,398 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 07:32:48,399 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-11-20 07:32:48,399 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-11-20 07:32:48,399 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-11-20 07:32:48,399 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-11-20 07:32:48,399 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-11-20 07:32:48,399 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-11-20 07:32:48,400 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-11-20 07:32:48,400 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-11-20 07:32:48,400 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-11-20 07:32:48,400 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-11-20 07:32:48,400 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-11-20 07:32:48,400 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-11-20 07:32:48,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 07:32:48,400 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 07:32:48,401 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 07:32:48,593 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 07:32:48,604 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 07:32:55,778 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 07:32:55,903 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 07:32:55,904 INFO L301 CfgBuilder]: Removed 13 assume(true) statements. [2021-11-20 07:32:55,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:32:55 BoogieIcfgContainer [2021-11-20 07:32:55,909 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 07:32:55,910 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 07:32:55,910 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 07:32:55,914 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 07:32:55,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 07:32:42" (1/3) ... [2021-11-20 07:32:55,915 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b11a993 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:32:55, skipping insertion in model container [2021-11-20 07:32:55,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:32:46" (2/3) ... [2021-11-20 07:32:55,915 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b11a993 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:32:55, skipping insertion in model container [2021-11-20 07:32:55,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:32:55" (3/3) ... [2021-11-20 07:32:55,916 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label49+token_ring.09.cil-1.c [2021-11-20 07:32:55,921 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 07:32:55,922 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-20 07:32:55,982 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 07:32:55,989 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 [2021-11-20 07:32:55,989 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-20 07:32:56,054 INFO L276 IsEmpty]: Start isEmpty. Operand has 2490 states, 2458 states have (on average 1.8470301057770546) internal successors, (4540), 2461 states have internal predecessors, (4540), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2021-11-20 07:32:56,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-20 07:32:56,071 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:32:56,072 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:32:56,072 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:32:56,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:32:56,077 INFO L85 PathProgramCache]: Analyzing trace with hash -762884387, now seen corresponding path program 1 times [2021-11-20 07:32:56,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:32:56,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549199015] [2021-11-20 07:32:56,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:32:56,088 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:32:56,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:32:56,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 07:32:56,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:32:56,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-20 07:32:56,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:32:56,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-11-20 07:32:56,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:32:56,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-11-20 07:32:56,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:32:56,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-11-20 07:32:56,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:32:56,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:32:56,600 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:32:56,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549199015] [2021-11-20 07:32:56,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549199015] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:32:56,601 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:32:56,602 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 07:32:56,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22902896] [2021-11-20 07:32:56,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:32:56,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 07:32:56,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:32:56,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 07:32:56,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 07:32:56,653 INFO L87 Difference]: Start difference. First operand has 2490 states, 2458 states have (on average 1.8470301057770546) internal successors, (4540), 2461 states have internal predecessors, (4540), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 07:32:58,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:32:58,353 INFO L93 Difference]: Finished difference Result 5081 states and 9345 transitions. [2021-11-20 07:32:58,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 07:32:58,356 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2021-11-20 07:32:58,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:32:58,394 INFO L225 Difference]: With dead ends: 5081 [2021-11-20 07:32:58,395 INFO L226 Difference]: Without dead ends: 2532 [2021-11-20 07:32:58,407 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-20 07:32:58,412 INFO L933 BasicCegarLoop]: 4545 mSDtfsCounter, 807 mSDsluCounter, 12404 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 828 SdHoareTripleChecker+Valid, 16949 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:32:58,413 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [828 Valid, 16949 Invalid, 601 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [54 Valid, 547 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-20 07:32:58,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2532 states. [2021-11-20 07:32:58,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2532 to 2423. [2021-11-20 07:32:58,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2423 states, 2392 states have (on average 1.8323578595317727) internal successors, (4383), 2394 states have internal predecessors, (4383), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2021-11-20 07:32:58,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2423 states to 2423 states and 4429 transitions. [2021-11-20 07:32:58,602 INFO L78 Accepts]: Start accepts. Automaton has 2423 states and 4429 transitions. Word has length 145 [2021-11-20 07:32:58,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:32:58,603 INFO L470 AbstractCegarLoop]: Abstraction has 2423 states and 4429 transitions. [2021-11-20 07:32:58,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 07:32:58,604 INFO L276 IsEmpty]: Start isEmpty. Operand 2423 states and 4429 transitions. [2021-11-20 07:32:58,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-20 07:32:58,619 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:32:58,620 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:32:58,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 07:32:58,621 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:32:58,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:32:58,624 INFO L85 PathProgramCache]: Analyzing trace with hash 854556063, now seen corresponding path program 1 times [2021-11-20 07:32:58,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:32:58,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184480399] [2021-11-20 07:32:58,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:32:58,626 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:32:58,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:32:58,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 07:32:58,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:32:58,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-20 07:32:58,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:32:58,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-11-20 07:32:58,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:32:58,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-11-20 07:32:58,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:32:58,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-11-20 07:32:58,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:32:58,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:32:58,998 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:32:58,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184480399] [2021-11-20 07:32:58,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184480399] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:32:58,998 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:32:58,999 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-20 07:32:58,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346416924] [2021-11-20 07:32:58,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:32:59,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 07:32:59,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:32:59,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 07:32:59,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-20 07:32:59,002 INFO L87 Difference]: Start difference. First operand 2423 states and 4429 transitions. Second operand has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 07:33:01,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:33:01,816 INFO L93 Difference]: Finished difference Result 3223 states and 5716 transitions. [2021-11-20 07:33:01,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 07:33:01,817 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2021-11-20 07:33:01,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:33:01,846 INFO L225 Difference]: With dead ends: 3223 [2021-11-20 07:33:01,846 INFO L226 Difference]: Without dead ends: 2938 [2021-11-20 07:33:01,853 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-11-20 07:33:01,855 INFO L933 BasicCegarLoop]: 4516 mSDtfsCounter, 5165 mSDsluCounter, 12682 mSDsCounter, 0 mSdLazyCounter, 1524 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5181 SdHoareTripleChecker+Valid, 17198 SdHoareTripleChecker+Invalid, 1628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-20 07:33:01,856 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5181 Valid, 17198 Invalid, 1628 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [104 Valid, 1524 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-11-20 07:33:01,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2938 states. [2021-11-20 07:33:02,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2938 to 2721. [2021-11-20 07:33:02,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2721 states, 2665 states have (on average 1.8071294559099438) internal successors, (4816), 2668 states have internal predecessors, (4816), 41 states have call successors, (41), 12 states have call predecessors, (41), 13 states have return successors, (44), 41 states have call predecessors, (44), 41 states have call successors, (44) [2021-11-20 07:33:02,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2721 states to 2721 states and 4901 transitions. [2021-11-20 07:33:02,088 INFO L78 Accepts]: Start accepts. Automaton has 2721 states and 4901 transitions. Word has length 145 [2021-11-20 07:33:02,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:33:02,089 INFO L470 AbstractCegarLoop]: Abstraction has 2721 states and 4901 transitions. [2021-11-20 07:33:02,089 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 07:33:02,089 INFO L276 IsEmpty]: Start isEmpty. Operand 2721 states and 4901 transitions. [2021-11-20 07:33:02,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-20 07:33:02,091 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:33:02,092 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:33:02,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 07:33:02,092 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:33:02,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:33:02,094 INFO L85 PathProgramCache]: Analyzing trace with hash -1697407709, now seen corresponding path program 1 times [2021-11-20 07:33:02,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:33:02,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723305777] [2021-11-20 07:33:02,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:33:02,094 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:33:02,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:33:02,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 07:33:02,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:33:02,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-20 07:33:02,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:33:02,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-11-20 07:33:02,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:33:02,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-11-20 07:33:02,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:33:02,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-11-20 07:33:02,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:33:02,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:33:02,422 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:33:02,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723305777] [2021-11-20 07:33:02,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723305777] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:33:02,424 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:33:02,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 07:33:02,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687611782] [2021-11-20 07:33:02,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:33:02,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 07:33:02,427 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:33:02,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 07:33:02,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:33:02,429 INFO L87 Difference]: Start difference. First operand 2721 states and 4901 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 07:33:03,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:33:03,879 INFO L93 Difference]: Finished difference Result 3537 states and 6220 transitions. [2021-11-20 07:33:03,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 07:33:03,879 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2021-11-20 07:33:03,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:33:03,898 INFO L225 Difference]: With dead ends: 3537 [2021-11-20 07:33:03,898 INFO L226 Difference]: Without dead ends: 2954 [2021-11-20 07:33:03,902 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-11-20 07:33:03,903 INFO L933 BasicCegarLoop]: 4465 mSDtfsCounter, 4962 mSDsluCounter, 12460 mSDsCounter, 0 mSdLazyCounter, 1049 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4979 SdHoareTripleChecker+Valid, 16925 SdHoareTripleChecker+Invalid, 1146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 1049 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:33:03,904 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4979 Valid, 16925 Invalid, 1146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 1049 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-20 07:33:03,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2954 states. [2021-11-20 07:33:03,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2954 to 2721. [2021-11-20 07:33:04,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2721 states, 2665 states have (on average 1.8063789868667917) internal successors, (4814), 2668 states have internal predecessors, (4814), 41 states have call successors, (41), 12 states have call predecessors, (41), 13 states have return successors, (44), 41 states have call predecessors, (44), 41 states have call successors, (44) [2021-11-20 07:33:04,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2721 states to 2721 states and 4899 transitions. [2021-11-20 07:33:04,017 INFO L78 Accepts]: Start accepts. Automaton has 2721 states and 4899 transitions. Word has length 145 [2021-11-20 07:33:04,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:33:04,018 INFO L470 AbstractCegarLoop]: Abstraction has 2721 states and 4899 transitions. [2021-11-20 07:33:04,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 07:33:04,018 INFO L276 IsEmpty]: Start isEmpty. Operand 2721 states and 4899 transitions. [2021-11-20 07:33:04,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-20 07:33:04,021 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:33:04,021 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:33:04,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 07:33:04,021 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:33:04,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:33:04,022 INFO L85 PathProgramCache]: Analyzing trace with hash -750369823, now seen corresponding path program 1 times [2021-11-20 07:33:04,022 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:33:04,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218268984] [2021-11-20 07:33:04,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:33:04,023 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:33:04,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:33:04,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 07:33:04,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:33:04,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-20 07:33:04,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:33:04,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-11-20 07:33:04,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:33:04,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-11-20 07:33:04,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:33:04,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-11-20 07:33:04,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:33:04,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:33:04,178 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:33:04,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218268984] [2021-11-20 07:33:04,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218268984] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:33:04,178 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:33:04,179 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 07:33:04,179 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273592072] [2021-11-20 07:33:04,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:33:04,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 07:33:04,180 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:33:04,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 07:33:04,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:33:04,181 INFO L87 Difference]: Start difference. First operand 2721 states and 4899 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 07:33:07,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:33:07,426 INFO L93 Difference]: Finished difference Result 3938 states and 6853 transitions. [2021-11-20 07:33:07,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 07:33:07,427 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2021-11-20 07:33:07,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:33:07,450 INFO L225 Difference]: With dead ends: 3938 [2021-11-20 07:33:07,451 INFO L226 Difference]: Without dead ends: 3355 [2021-11-20 07:33:07,454 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-11-20 07:33:07,466 INFO L933 BasicCegarLoop]: 4739 mSDtfsCounter, 5180 mSDsluCounter, 17378 mSDsCounter, 0 mSdLazyCounter, 2371 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5196 SdHoareTripleChecker+Valid, 22117 SdHoareTripleChecker+Invalid, 2448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 2371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-11-20 07:33:07,466 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5196 Valid, 22117 Invalid, 2448 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [77 Valid, 2371 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-11-20 07:33:07,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3355 states. [2021-11-20 07:33:07,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3355 to 2999. [2021-11-20 07:33:07,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2999 states, 2918 states have (on average 1.7840986977381768) internal successors, (5206), 2922 states have internal predecessors, (5206), 59 states have call successors, (59), 18 states have call predecessors, (59), 20 states have return successors, (64), 60 states have call predecessors, (64), 59 states have call successors, (64) [2021-11-20 07:33:07,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2999 states to 2999 states and 5329 transitions. [2021-11-20 07:33:07,642 INFO L78 Accepts]: Start accepts. Automaton has 2999 states and 5329 transitions. Word has length 145 [2021-11-20 07:33:07,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:33:07,644 INFO L470 AbstractCegarLoop]: Abstraction has 2999 states and 5329 transitions. [2021-11-20 07:33:07,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 07:33:07,652 INFO L276 IsEmpty]: Start isEmpty. Operand 2999 states and 5329 transitions. [2021-11-20 07:33:07,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-20 07:33:07,656 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:33:07,656 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:33:07,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-20 07:33:07,656 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:33:07,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:33:07,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1494188575, now seen corresponding path program 1 times [2021-11-20 07:33:07,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:33:07,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264587201] [2021-11-20 07:33:07,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:33:07,658 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:33:07,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:33:07,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 07:33:07,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:33:07,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-20 07:33:07,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:33:07,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-11-20 07:33:07,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:33:07,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-11-20 07:33:07,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:33:07,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-11-20 07:33:07,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:33:07,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:33:07,853 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:33:07,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264587201] [2021-11-20 07:33:07,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264587201] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:33:07,854 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:33:07,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 07:33:07,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367811474] [2021-11-20 07:33:07,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:33:07,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 07:33:07,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:33:07,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 07:33:07,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:33:07,856 INFO L87 Difference]: Start difference. First operand 2999 states and 5329 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 07:33:10,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:33:10,963 INFO L93 Difference]: Finished difference Result 4992 states and 8519 transitions. [2021-11-20 07:33:10,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 07:33:10,964 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2021-11-20 07:33:10,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:33:10,992 INFO L225 Difference]: With dead ends: 4992 [2021-11-20 07:33:10,993 INFO L226 Difference]: Without dead ends: 4131 [2021-11-20 07:33:10,998 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-11-20 07:33:10,999 INFO L933 BasicCegarLoop]: 4732 mSDtfsCounter, 5176 mSDsluCounter, 17374 mSDsCounter, 0 mSdLazyCounter, 2355 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5192 SdHoareTripleChecker+Valid, 22106 SdHoareTripleChecker+Invalid, 2433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 2355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-20 07:33:10,999 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5192 Valid, 22106 Invalid, 2433 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [78 Valid, 2355 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-11-20 07:33:11,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4131 states. [2021-11-20 07:33:11,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4131 to 3558. [2021-11-20 07:33:11,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3558 states, 3427 states have (on average 1.7493434490808286) internal successors, (5995), 3433 states have internal predecessors, (5995), 95 states have call successors, (95), 30 states have call predecessors, (95), 34 states have return successors, (108), 98 states have call predecessors, (108), 95 states have call successors, (108) [2021-11-20 07:33:11,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3558 states to 3558 states and 6198 transitions. [2021-11-20 07:33:11,204 INFO L78 Accepts]: Start accepts. Automaton has 3558 states and 6198 transitions. Word has length 145 [2021-11-20 07:33:11,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:33:11,205 INFO L470 AbstractCegarLoop]: Abstraction has 3558 states and 6198 transitions. [2021-11-20 07:33:11,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 07:33:11,205 INFO L276 IsEmpty]: Start isEmpty. Operand 3558 states and 6198 transitions. [2021-11-20 07:33:11,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-20 07:33:11,209 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:33:11,209 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:33:11,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-20 07:33:11,209 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:33:11,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:33:11,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1982235681, now seen corresponding path program 1 times [2021-11-20 07:33:11,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:33:11,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262664748] [2021-11-20 07:33:11,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:33:11,211 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:33:11,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:33:11,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 07:33:11,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:33:11,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-20 07:33:11,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:33:11,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-11-20 07:33:11,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:33:11,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-11-20 07:33:11,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:33:11,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-11-20 07:33:11,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:33:11,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:33:11,375 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:33:11,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262664748] [2021-11-20 07:33:11,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262664748] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:33:11,375 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:33:11,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 07:33:11,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463078126] [2021-11-20 07:33:11,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:33:11,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 07:33:11,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:33:11,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 07:33:11,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:33:11,378 INFO L87 Difference]: Start difference. First operand 3558 states and 6198 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 07:33:13,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:33:13,103 INFO L93 Difference]: Finished difference Result 5541 states and 9379 transitions. [2021-11-20 07:33:13,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 07:33:13,104 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2021-11-20 07:33:13,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:33:13,135 INFO L225 Difference]: With dead ends: 5541 [2021-11-20 07:33:13,135 INFO L226 Difference]: Without dead ends: 4121 [2021-11-20 07:33:13,141 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-11-20 07:33:13,142 INFO L933 BasicCegarLoop]: 4452 mSDtfsCounter, 4829 mSDsluCounter, 16572 mSDsCounter, 0 mSdLazyCounter, 1151 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4846 SdHoareTripleChecker+Valid, 21024 SdHoareTripleChecker+Invalid, 1228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-20 07:33:13,143 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4846 Valid, 21024 Invalid, 1228 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [77 Valid, 1151 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-20 07:33:13,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4121 states. [2021-11-20 07:33:13,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4121 to 3558. [2021-11-20 07:33:13,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3558 states, 3427 states have (on average 1.7478844470382258) internal successors, (5990), 3433 states have internal predecessors, (5990), 95 states have call successors, (95), 30 states have call predecessors, (95), 34 states have return successors, (108), 98 states have call predecessors, (108), 95 states have call successors, (108) [2021-11-20 07:33:13,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3558 states to 3558 states and 6193 transitions. [2021-11-20 07:33:13,342 INFO L78 Accepts]: Start accepts. Automaton has 3558 states and 6193 transitions. Word has length 145 [2021-11-20 07:33:13,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:33:13,343 INFO L470 AbstractCegarLoop]: Abstraction has 3558 states and 6193 transitions. [2021-11-20 07:33:13,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 07:33:13,344 INFO L276 IsEmpty]: Start isEmpty. Operand 3558 states and 6193 transitions. [2021-11-20 07:33:13,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-20 07:33:13,347 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:33:13,347 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:33:13,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-20 07:33:13,348 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:33:13,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:33:13,349 INFO L85 PathProgramCache]: Analyzing trace with hash 889600479, now seen corresponding path program 1 times [2021-11-20 07:33:13,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:33:13,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651099273] [2021-11-20 07:33:13,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:33:13,352 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:33:13,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:33:13,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 07:33:13,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:33:13,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-20 07:33:13,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:33:13,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-11-20 07:33:13,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:33:13,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-11-20 07:33:13,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:33:13,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-11-20 07:33:13,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:33:13,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:33:13,506 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:33:13,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651099273] [2021-11-20 07:33:13,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651099273] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:33:13,506 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:33:13,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 07:33:13,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924741726] [2021-11-20 07:33:13,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:33:13,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 07:33:13,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:33:13,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 07:33:13,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:33:13,508 INFO L87 Difference]: Start difference. First operand 3558 states and 6193 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 07:33:14,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:33:14,946 INFO L93 Difference]: Finished difference Result 5535 states and 9352 transitions. [2021-11-20 07:33:14,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 07:33:14,946 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2021-11-20 07:33:14,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:33:14,972 INFO L225 Difference]: With dead ends: 5535 [2021-11-20 07:33:14,972 INFO L226 Difference]: Without dead ends: 4115 [2021-11-20 07:33:14,978 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-11-20 07:33:14,979 INFO L933 BasicCegarLoop]: 4420 mSDtfsCounter, 5011 mSDsluCounter, 12458 mSDsCounter, 0 mSdLazyCounter, 981 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5028 SdHoareTripleChecker+Valid, 16878 SdHoareTripleChecker+Invalid, 1082 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 981 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:33:14,980 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5028 Valid, 16878 Invalid, 1082 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 981 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-20 07:33:14,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4115 states. [2021-11-20 07:33:15,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4115 to 3558. [2021-11-20 07:33:15,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3558 states, 3427 states have (on average 1.746425444995623) internal successors, (5985), 3433 states have internal predecessors, (5985), 95 states have call successors, (95), 30 states have call predecessors, (95), 34 states have return successors, (108), 98 states have call predecessors, (108), 95 states have call successors, (108) [2021-11-20 07:33:15,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3558 states to 3558 states and 6188 transitions. [2021-11-20 07:33:15,151 INFO L78 Accepts]: Start accepts. Automaton has 3558 states and 6188 transitions. Word has length 145 [2021-11-20 07:33:15,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:33:15,152 INFO L470 AbstractCegarLoop]: Abstraction has 3558 states and 6188 transitions. [2021-11-20 07:33:15,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 07:33:15,152 INFO L276 IsEmpty]: Start isEmpty. Operand 3558 states and 6188 transitions. [2021-11-20 07:33:15,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-20 07:33:15,155 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:33:15,155 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:33:15,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-20 07:33:15,156 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:33:15,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:33:15,156 INFO L85 PathProgramCache]: Analyzing trace with hash -392571807, now seen corresponding path program 1 times [2021-11-20 07:33:15,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:33:15,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720326649] [2021-11-20 07:33:15,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:33:15,157 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:33:15,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:33:15,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 07:33:15,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:33:15,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-20 07:33:15,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:33:15,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-11-20 07:33:15,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:33:15,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-11-20 07:33:15,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:33:15,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-11-20 07:33:15,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:33:15,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:33:15,289 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:33:15,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720326649] [2021-11-20 07:33:15,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720326649] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:33:15,289 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:33:15,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 07:33:15,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642979201] [2021-11-20 07:33:15,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:33:15,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 07:33:15,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:33:15,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 07:33:15,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:33:15,291 INFO L87 Difference]: Start difference. First operand 3558 states and 6188 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 07:33:16,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:33:16,962 INFO L93 Difference]: Finished difference Result 5529 states and 9325 transitions. [2021-11-20 07:33:16,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 07:33:16,962 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2021-11-20 07:33:16,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:33:16,992 INFO L225 Difference]: With dead ends: 5529 [2021-11-20 07:33:16,999 INFO L226 Difference]: Without dead ends: 4109 [2021-11-20 07:33:17,005 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-11-20 07:33:17,005 INFO L933 BasicCegarLoop]: 4444 mSDtfsCounter, 4825 mSDsluCounter, 16572 mSDsCounter, 0 mSdLazyCounter, 1127 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4842 SdHoareTripleChecker+Valid, 21016 SdHoareTripleChecker+Invalid, 1204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-20 07:33:17,006 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4842 Valid, 21016 Invalid, 1204 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [77 Valid, 1127 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-20 07:33:17,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4109 states. [2021-11-20 07:33:17,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4109 to 3558. [2021-11-20 07:33:17,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3558 states, 3427 states have (on average 1.74496644295302) internal successors, (5980), 3433 states have internal predecessors, (5980), 95 states have call successors, (95), 30 states have call predecessors, (95), 34 states have return successors, (108), 98 states have call predecessors, (108), 95 states have call successors, (108) [2021-11-20 07:33:17,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3558 states to 3558 states and 6183 transitions. [2021-11-20 07:33:17,186 INFO L78 Accepts]: Start accepts. Automaton has 3558 states and 6183 transitions. Word has length 145 [2021-11-20 07:33:17,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:33:17,188 INFO L470 AbstractCegarLoop]: Abstraction has 3558 states and 6183 transitions. [2021-11-20 07:33:17,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 07:33:17,188 INFO L276 IsEmpty]: Start isEmpty. Operand 3558 states and 6183 transitions. [2021-11-20 07:33:17,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-20 07:33:17,191 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:33:17,191 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:33:17,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-20 07:33:17,192 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:33:17,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:33:17,192 INFO L85 PathProgramCache]: Analyzing trace with hash 2059919775, now seen corresponding path program 1 times [2021-11-20 07:33:17,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:33:17,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532340204] [2021-11-20 07:33:17,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:33:17,193 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:33:17,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:33:17,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 07:33:17,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:33:17,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-20 07:33:17,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:33:17,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-11-20 07:33:17,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:33:17,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-11-20 07:33:17,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:33:17,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-11-20 07:33:17,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:33:17,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:33:17,342 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:33:17,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532340204] [2021-11-20 07:33:17,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532340204] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:33:17,343 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:33:17,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 07:33:17,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312368888] [2021-11-20 07:33:17,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:33:17,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 07:33:17,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:33:17,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 07:33:17,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:33:17,345 INFO L87 Difference]: Start difference. First operand 3558 states and 6183 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 07:33:20,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:33:20,168 INFO L93 Difference]: Finished difference Result 7013 states and 11620 transitions. [2021-11-20 07:33:20,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 07:33:20,169 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2021-11-20 07:33:20,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:33:20,188 INFO L225 Difference]: With dead ends: 7013 [2021-11-20 07:33:20,189 INFO L226 Difference]: Without dead ends: 5593 [2021-11-20 07:33:20,196 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-11-20 07:33:20,197 INFO L933 BasicCegarLoop]: 4709 mSDtfsCounter, 5154 mSDsluCounter, 17374 mSDsCounter, 0 mSdLazyCounter, 2290 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5170 SdHoareTripleChecker+Valid, 22083 SdHoareTripleChecker+Invalid, 2368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 2290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:33:20,197 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5170 Valid, 22083 Invalid, 2368 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [78 Valid, 2290 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-20 07:33:20,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5593 states. [2021-11-20 07:33:20,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5593 to 4694. [2021-11-20 07:33:20,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4694 states, 4463 states have (on average 1.69572036746583) internal successors, (7568), 4473 states have internal predecessors, (7568), 167 states have call successors, (167), 54 states have call predecessors, (167), 62 states have return successors, (202), 174 states have call predecessors, (202), 167 states have call successors, (202) [2021-11-20 07:33:20,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4694 states to 4694 states and 7937 transitions. [2021-11-20 07:33:20,459 INFO L78 Accepts]: Start accepts. Automaton has 4694 states and 7937 transitions. Word has length 145 [2021-11-20 07:33:20,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:33:20,460 INFO L470 AbstractCegarLoop]: Abstraction has 4694 states and 7937 transitions. [2021-11-20 07:33:20,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 07:33:20,460 INFO L276 IsEmpty]: Start isEmpty. Operand 4694 states and 7937 transitions. [2021-11-20 07:33:20,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-20 07:33:20,464 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:33:20,464 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:33:20,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-20 07:33:20,464 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:33:20,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:33:20,468 INFO L85 PathProgramCache]: Analyzing trace with hash 337917089, now seen corresponding path program 1 times [2021-11-20 07:33:20,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:33:20,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078700308] [2021-11-20 07:33:20,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:33:20,469 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:33:20,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:33:20,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 07:33:20,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:33:20,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-20 07:33:20,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:33:20,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-11-20 07:33:20,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:33:20,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-11-20 07:33:20,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:33:20,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-11-20 07:33:20,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:33:20,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:33:20,611 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:33:20,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078700308] [2021-11-20 07:33:20,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078700308] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:33:20,611 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:33:20,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 07:33:20,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500247746] [2021-11-20 07:33:20,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:33:20,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 07:33:20,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:33:20,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 07:33:20,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:33:20,613 INFO L87 Difference]: Start difference. First operand 4694 states and 7937 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 07:33:23,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:33:23,531 INFO L93 Difference]: Finished difference Result 11095 states and 17992 transitions. [2021-11-20 07:33:23,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 07:33:23,532 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2021-11-20 07:33:23,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:33:23,561 INFO L225 Difference]: With dead ends: 11095 [2021-11-20 07:33:23,561 INFO L226 Difference]: Without dead ends: 8539 [2021-11-20 07:33:23,574 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-11-20 07:33:23,575 INFO L933 BasicCegarLoop]: 4702 mSDtfsCounter, 5156 mSDsluCounter, 17374 mSDsCounter, 0 mSdLazyCounter, 2279 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5172 SdHoareTripleChecker+Valid, 22076 SdHoareTripleChecker+Invalid, 2360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 2279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:33:23,576 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5172 Valid, 22076 Invalid, 2360 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [81 Valid, 2279 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-20 07:33:23,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8539 states. [2021-11-20 07:33:24,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8539 to 6967. [2021-11-20 07:33:24,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6967 states, 6536 states have (on average 1.6435128518971849) internal successors, (10742), 6554 states have internal predecessors, (10742), 311 states have call successors, (311), 102 states have call predecessors, (311), 118 states have return successors, (408), 326 states have call predecessors, (408), 311 states have call successors, (408) [2021-11-20 07:33:24,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6967 states to 6967 states and 11461 transitions. [2021-11-20 07:33:24,083 INFO L78 Accepts]: Start accepts. Automaton has 6967 states and 11461 transitions. Word has length 145 [2021-11-20 07:33:24,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:33:24,083 INFO L470 AbstractCegarLoop]: Abstraction has 6967 states and 11461 transitions. [2021-11-20 07:33:24,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 07:33:24,084 INFO L276 IsEmpty]: Start isEmpty. Operand 6967 states and 11461 transitions. [2021-11-20 07:33:24,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-20 07:33:24,090 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:33:24,090 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:33:24,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-20 07:33:24,090 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:33:24,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:33:24,091 INFO L85 PathProgramCache]: Analyzing trace with hash 5273951, now seen corresponding path program 1 times [2021-11-20 07:33:24,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:33:24,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238618248] [2021-11-20 07:33:24,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:33:24,092 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:33:24,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:33:24,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 07:33:24,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:33:24,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-20 07:33:24,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:33:24,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-11-20 07:33:24,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:33:24,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-11-20 07:33:24,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:33:24,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-11-20 07:33:24,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:33:24,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:33:24,221 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:33:24,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238618248] [2021-11-20 07:33:24,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238618248] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:33:24,221 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:33:24,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 07:33:24,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466458616] [2021-11-20 07:33:24,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:33:24,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 07:33:24,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:33:24,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 07:33:24,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:33:24,223 INFO L87 Difference]: Start difference. First operand 6967 states and 11461 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 07:33:28,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:33:28,510 INFO L93 Difference]: Finished difference Result 21204 states and 33776 transitions. [2021-11-20 07:33:28,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-20 07:33:28,510 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2021-11-20 07:33:28,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:33:28,574 INFO L225 Difference]: With dead ends: 21204 [2021-11-20 07:33:28,575 INFO L226 Difference]: Without dead ends: 16375 [2021-11-20 07:33:28,603 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-11-20 07:33:28,604 INFO L933 BasicCegarLoop]: 4830 mSDtfsCounter, 5233 mSDsluCounter, 17363 mSDsCounter, 0 mSdLazyCounter, 2667 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5248 SdHoareTripleChecker+Valid, 22193 SdHoareTripleChecker+Invalid, 2750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 2667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-11-20 07:33:28,604 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5248 Valid, 22193 Invalid, 2750 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [83 Valid, 2667 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-11-20 07:33:28,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16375 states. [2021-11-20 07:33:29,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16375 to 11417. [2021-11-20 07:33:29,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11417 states, 10602 states have (on average 1.6021505376344085) internal successors, (16986), 10636 states have internal predecessors, (16986), 583 states have call successors, (583), 198 states have call predecessors, (583), 230 states have return successors, (858), 614 states have call predecessors, (858), 583 states have call successors, (858) [2021-11-20 07:33:29,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11417 states to 11417 states and 18427 transitions. [2021-11-20 07:33:29,556 INFO L78 Accepts]: Start accepts. Automaton has 11417 states and 18427 transitions. Word has length 145 [2021-11-20 07:33:29,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:33:29,557 INFO L470 AbstractCegarLoop]: Abstraction has 11417 states and 18427 transitions. [2021-11-20 07:33:29,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 07:33:29,557 INFO L276 IsEmpty]: Start isEmpty. Operand 11417 states and 18427 transitions. [2021-11-20 07:33:29,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-20 07:33:29,571 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:33:29,571 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:33:29,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-20 07:33:29,571 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:33:29,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:33:29,572 INFO L85 PathProgramCache]: Analyzing trace with hash 2007160221, now seen corresponding path program 1 times [2021-11-20 07:33:29,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:33:29,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946899885] [2021-11-20 07:33:29,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:33:29,573 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:33:29,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:33:29,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 07:33:29,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:33:29,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-20 07:33:29,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:33:29,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-11-20 07:33:29,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:33:29,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-11-20 07:33:29,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:33:29,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-11-20 07:33:29,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:33:29,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:33:29,712 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:33:29,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946899885] [2021-11-20 07:33:29,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946899885] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:33:29,712 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:33:29,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 07:33:29,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063572277] [2021-11-20 07:33:29,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:33:29,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 07:33:29,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:33:29,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 07:33:29,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:33:29,714 INFO L87 Difference]: Start difference. First operand 11417 states and 18427 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 07:33:34,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:33:34,325 INFO L93 Difference]: Finished difference Result 38692 states and 61336 transitions. [2021-11-20 07:33:34,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-20 07:33:34,325 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2021-11-20 07:33:34,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:33:34,440 INFO L225 Difference]: With dead ends: 38692 [2021-11-20 07:33:34,440 INFO L226 Difference]: Without dead ends: 29413 [2021-11-20 07:33:34,484 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-11-20 07:33:34,485 INFO L933 BasicCegarLoop]: 4686 mSDtfsCounter, 5441 mSDsluCounter, 17366 mSDsCounter, 0 mSdLazyCounter, 2246 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5467 SdHoareTripleChecker+Valid, 22052 SdHoareTripleChecker+Invalid, 2332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 2246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:33:34,485 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5467 Valid, 22052 Invalid, 2332 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [86 Valid, 2246 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-20 07:33:34,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29413 states. [2021-11-20 07:33:36,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29413 to 20378. [2021-11-20 07:33:36,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20378 states, 18811 states have (on average 1.5741853171016957) internal successors, (29612), 18877 states have internal predecessors, (29612), 1111 states have call successors, (1111), 390 states have call predecessors, (1111), 454 states have return successors, (1904), 1174 states have call predecessors, (1904), 1111 states have call successors, (1904) [2021-11-20 07:33:36,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20378 states to 20378 states and 32627 transitions. [2021-11-20 07:33:36,152 INFO L78 Accepts]: Start accepts. Automaton has 20378 states and 32627 transitions. Word has length 145 [2021-11-20 07:33:36,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:33:36,153 INFO L470 AbstractCegarLoop]: Abstraction has 20378 states and 32627 transitions. [2021-11-20 07:33:36,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 07:33:36,153 INFO L276 IsEmpty]: Start isEmpty. Operand 20378 states and 32627 transitions. [2021-11-20 07:33:36,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-20 07:33:36,169 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:33:36,169 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:33:36,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-20 07:33:36,169 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:33:36,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:33:36,170 INFO L85 PathProgramCache]: Analyzing trace with hash -560662113, now seen corresponding path program 1 times [2021-11-20 07:33:36,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:33:36,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271973112] [2021-11-20 07:33:36,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:33:36,171 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:33:36,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:33:36,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 07:33:36,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:33:36,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-20 07:33:36,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:33:36,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-11-20 07:33:36,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:33:36,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-11-20 07:33:36,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:33:36,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-11-20 07:33:36,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:33:36,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:33:36,300 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:33:36,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271973112] [2021-11-20 07:33:36,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271973112] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:33:36,301 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:33:36,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 07:33:36,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597397379] [2021-11-20 07:33:36,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:33:36,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 07:33:36,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:33:36,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 07:33:36,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:33:36,303 INFO L87 Difference]: Start difference. First operand 20378 states and 32627 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 07:33:42,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:33:42,934 INFO L93 Difference]: Finished difference Result 73283 states and 116510 transitions. [2021-11-20 07:33:42,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-20 07:33:42,934 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2021-11-20 07:33:42,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:33:43,140 INFO L225 Difference]: With dead ends: 73283 [2021-11-20 07:33:43,140 INFO L226 Difference]: Without dead ends: 55043 [2021-11-20 07:33:43,392 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-11-20 07:33:43,393 INFO L933 BasicCegarLoop]: 4681 mSDtfsCounter, 5401 mSDsluCounter, 17366 mSDsCounter, 0 mSdLazyCounter, 2238 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5427 SdHoareTripleChecker+Valid, 22047 SdHoareTripleChecker+Invalid, 2324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 2238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-20 07:33:43,394 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5427 Valid, 22047 Invalid, 2324 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [86 Valid, 2238 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-20 07:33:43,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55043 states. [2021-11-20 07:33:46,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55043 to 38267. [2021-11-20 07:33:46,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38267 states, 35228 states have (on average 1.5582491200181674) internal successors, (54894), 35358 states have internal predecessors, (54894), 2135 states have call successors, (2135), 774 states have call predecessors, (2135), 902 states have return successors, (4450), 2262 states have call predecessors, (4450), 2135 states have call successors, (4450) [2021-11-20 07:33:46,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38267 states to 38267 states and 61479 transitions. [2021-11-20 07:33:46,712 INFO L78 Accepts]: Start accepts. Automaton has 38267 states and 61479 transitions. Word has length 145 [2021-11-20 07:33:46,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:33:46,712 INFO L470 AbstractCegarLoop]: Abstraction has 38267 states and 61479 transitions. [2021-11-20 07:33:46,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 07:33:46,713 INFO L276 IsEmpty]: Start isEmpty. Operand 38267 states and 61479 transitions. [2021-11-20 07:33:46,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-20 07:33:46,740 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:33:46,740 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:33:46,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-20 07:33:46,741 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:33:46,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:33:46,741 INFO L85 PathProgramCache]: Analyzing trace with hash -89305763, now seen corresponding path program 1 times [2021-11-20 07:33:46,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:33:46,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120362965] [2021-11-20 07:33:46,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:33:46,742 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:33:46,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:33:46,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 07:33:46,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:33:46,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-20 07:33:46,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:33:46,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-11-20 07:33:46,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:33:46,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-11-20 07:33:46,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:33:46,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-11-20 07:33:46,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:33:46,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:33:46,887 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:33:46,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120362965] [2021-11-20 07:33:46,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120362965] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:33:46,887 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:33:46,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 07:33:46,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992525861] [2021-11-20 07:33:46,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:33:46,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 07:33:46,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:33:46,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 07:33:46,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:33:46,889 INFO L87 Difference]: Start difference. First operand 38267 states and 61479 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 07:33:58,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:33:58,407 INFO L93 Difference]: Finished difference Result 141282 states and 226916 transitions. [2021-11-20 07:33:58,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-20 07:33:58,408 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2021-11-20 07:33:58,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:33:59,022 INFO L225 Difference]: With dead ends: 141282 [2021-11-20 07:33:59,022 INFO L226 Difference]: Without dead ends: 105153 [2021-11-20 07:33:59,126 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-11-20 07:33:59,126 INFO L933 BasicCegarLoop]: 4591 mSDtfsCounter, 5260 mSDsluCounter, 16852 mSDsCounter, 0 mSdLazyCounter, 2316 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5275 SdHoareTripleChecker+Valid, 21443 SdHoareTripleChecker+Invalid, 2433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 2316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:33:59,127 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5275 Valid, 21443 Invalid, 2433 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [117 Valid, 2316 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-20 07:33:59,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105153 states. [2021-11-20 07:34:05,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105153 to 73980. [2021-11-20 07:34:05,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73980 states, 68061 states have (on average 1.550373929269332) internal successors, (105520), 68319 states have internal predecessors, (105520), 4119 states have call successors, (4119), 1542 states have call predecessors, (4119), 1798 states have return successors, (10936), 4374 states have call predecessors, (10936), 4119 states have call successors, (10936) [2021-11-20 07:34:05,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73980 states to 73980 states and 120575 transitions. [2021-11-20 07:34:05,766 INFO L78 Accepts]: Start accepts. Automaton has 73980 states and 120575 transitions. Word has length 145 [2021-11-20 07:34:05,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:34:05,766 INFO L470 AbstractCegarLoop]: Abstraction has 73980 states and 120575 transitions. [2021-11-20 07:34:05,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 07:34:05,766 INFO L276 IsEmpty]: Start isEmpty. Operand 73980 states and 120575 transitions. [2021-11-20 07:34:06,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-20 07:34:06,019 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:34:06,019 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:34:06,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-20 07:34:06,020 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:34:06,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:34:06,020 INFO L85 PathProgramCache]: Analyzing trace with hash -1736668705, now seen corresponding path program 1 times [2021-11-20 07:34:06,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:34:06,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960353351] [2021-11-20 07:34:06,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:34:06,021 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:34:06,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:34:06,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 07:34:06,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:34:06,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-20 07:34:06,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:34:06,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-11-20 07:34:06,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:34:06,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-11-20 07:34:06,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:34:06,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-11-20 07:34:06,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:34:06,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:34:06,213 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:34:06,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960353351] [2021-11-20 07:34:06,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960353351] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:34:06,213 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:34:06,214 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 07:34:06,214 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878236272] [2021-11-20 07:34:06,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:34:06,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 07:34:06,215 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:34:06,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 07:34:06,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:34:06,216 INFO L87 Difference]: Start difference. First operand 73980 states and 120575 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)