./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/systemc/transmitter.12.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e96d0b-f5dc-4c71-80a9-8642132517f7/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e96d0b-f5dc-4c71-80a9-8642132517f7/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e96d0b-f5dc-4c71-80a9-8642132517f7/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e96d0b-f5dc-4c71-80a9-8642132517f7/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/systemc/transmitter.12.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e96d0b-f5dc-4c71-80a9-8642132517f7/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e96d0b-f5dc-4c71-80a9-8642132517f7/bin/uautomizer-TMbwUNV5ro --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 062c7418109a213aa13d25a99437d8241cca4f6492c123259890838dc94aff90 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 21:04:33,401 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 21:04:33,403 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 21:04:33,429 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 21:04:33,429 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 21:04:33,431 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 21:04:33,432 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 21:04:33,434 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 21:04:33,443 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 21:04:33,449 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 21:04:33,450 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 21:04:33,451 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 21:04:33,452 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 21:04:33,453 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 21:04:33,456 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 21:04:33,458 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 21:04:33,460 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 21:04:33,462 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 21:04:33,466 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 21:04:33,473 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 21:04:33,474 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 21:04:33,478 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 21:04:33,481 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 21:04:33,482 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 21:04:33,489 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 21:04:33,492 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 21:04:33,492 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 21:04:33,493 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 21:04:33,495 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 21:04:33,496 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 21:04:33,497 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 21:04:33,498 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 21:04:33,500 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 21:04:33,501 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 21:04:33,503 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 21:04:33,503 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 21:04:33,504 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 21:04:33,504 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 21:04:33,505 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 21:04:33,505 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 21:04:33,506 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 21:04:33,507 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e96d0b-f5dc-4c71-80a9-8642132517f7/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 21:04:33,545 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 21:04:33,549 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 21:04:33,550 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 21:04:33,550 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 21:04:33,551 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 21:04:33,551 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 21:04:33,552 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 21:04:33,552 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 21:04:33,552 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 21:04:33,553 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 21:04:33,554 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 21:04:33,554 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 21:04:33,554 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 21:04:33,555 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 21:04:33,555 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 21:04:33,555 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 21:04:33,555 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 21:04:33,556 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 21:04:33,556 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 21:04:33,556 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 21:04:33,556 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 21:04:33,556 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 21:04:33,557 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 21:04:33,557 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 21:04:33,557 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 21:04:33,557 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 21:04:33,559 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 21:04:33,559 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 21:04:33,560 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 21:04:33,560 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 21:04:33,560 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 21:04:33,560 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 21:04:33,561 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 21:04:33,561 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_24e96d0b-f5dc-4c71-80a9-8642132517f7/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e96d0b-f5dc-4c71-80a9-8642132517f7/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 062c7418109a213aa13d25a99437d8241cca4f6492c123259890838dc94aff90 [2022-11-18 21:04:33,852 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 21:04:33,878 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 21:04:33,880 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 21:04:33,882 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 21:04:33,883 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 21:04:33,884 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e96d0b-f5dc-4c71-80a9-8642132517f7/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/systemc/transmitter.12.cil.c [2022-11-18 21:04:33,966 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e96d0b-f5dc-4c71-80a9-8642132517f7/bin/uautomizer-TMbwUNV5ro/data/28342f1a4/415cb8e01a694de5aa678233d346fcd5/FLAG5cce0ba5f [2022-11-18 21:04:34,589 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 21:04:34,599 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e96d0b-f5dc-4c71-80a9-8642132517f7/sv-benchmarks/c/systemc/transmitter.12.cil.c [2022-11-18 21:04:34,620 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e96d0b-f5dc-4c71-80a9-8642132517f7/bin/uautomizer-TMbwUNV5ro/data/28342f1a4/415cb8e01a694de5aa678233d346fcd5/FLAG5cce0ba5f [2022-11-18 21:04:34,872 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e96d0b-f5dc-4c71-80a9-8642132517f7/bin/uautomizer-TMbwUNV5ro/data/28342f1a4/415cb8e01a694de5aa678233d346fcd5 [2022-11-18 21:04:34,874 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 21:04:34,876 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 21:04:34,878 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 21:04:34,878 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 21:04:34,882 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 21:04:34,883 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:04:34" (1/1) ... [2022-11-18 21:04:34,884 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e57ec53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:04:34, skipping insertion in model container [2022-11-18 21:04:34,885 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:04:34" (1/1) ... [2022-11-18 21:04:34,893 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 21:04:34,971 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 21:04:35,167 WARN L234 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_24e96d0b-f5dc-4c71-80a9-8642132517f7/sv-benchmarks/c/systemc/transmitter.12.cil.c[706,719] [2022-11-18 21:04:35,288 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 21:04:35,299 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 21:04:35,311 WARN L234 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_24e96d0b-f5dc-4c71-80a9-8642132517f7/sv-benchmarks/c/systemc/transmitter.12.cil.c[706,719] [2022-11-18 21:04:35,427 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 21:04:35,454 INFO L208 MainTranslator]: Completed translation [2022-11-18 21:04:35,455 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:04:35 WrapperNode [2022-11-18 21:04:35,455 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 21:04:35,465 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 21:04:35,466 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 21:04:35,466 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 21:04:35,474 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:04:35" (1/1) ... [2022-11-18 21:04:35,499 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:04:35" (1/1) ... [2022-11-18 21:04:35,550 INFO L138 Inliner]: procedures = 52, calls = 66, calls flagged for inlining = 36, calls inlined = 36, statements flattened = 834 [2022-11-18 21:04:35,550 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 21:04:35,551 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 21:04:35,551 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 21:04:35,551 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 21:04:35,561 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:04:35" (1/1) ... [2022-11-18 21:04:35,561 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:04:35" (1/1) ... [2022-11-18 21:04:35,565 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:04:35" (1/1) ... [2022-11-18 21:04:35,566 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:04:35" (1/1) ... [2022-11-18 21:04:35,579 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:04:35" (1/1) ... [2022-11-18 21:04:35,607 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:04:35" (1/1) ... [2022-11-18 21:04:35,610 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:04:35" (1/1) ... [2022-11-18 21:04:35,613 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:04:35" (1/1) ... [2022-11-18 21:04:35,617 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 21:04:35,618 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 21:04:35,618 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 21:04:35,619 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 21:04:35,620 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:04:35" (1/1) ... [2022-11-18 21:04:35,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 21:04:35,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e96d0b-f5dc-4c71-80a9-8642132517f7/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:04:35,666 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e96d0b-f5dc-4c71-80a9-8642132517f7/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 21:04:35,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e96d0b-f5dc-4c71-80a9-8642132517f7/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 21:04:35,711 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 21:04:35,711 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-11-18 21:04:35,712 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-11-18 21:04:35,712 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-18 21:04:35,712 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-18 21:04:35,712 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-11-18 21:04:35,712 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-11-18 21:04:35,712 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-11-18 21:04:35,712 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-11-18 21:04:35,713 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-11-18 21:04:35,713 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-11-18 21:04:35,713 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-11-18 21:04:35,713 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-11-18 21:04:35,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 21:04:35,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 21:04:35,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 21:04:35,840 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 21:04:35,843 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 21:04:36,904 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 21:04:36,964 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 21:04:36,964 INFO L300 CfgBuilder]: Removed 16 assume(true) statements. [2022-11-18 21:04:36,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:04:36 BoogieIcfgContainer [2022-11-18 21:04:36,966 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 21:04:36,968 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 21:04:36,968 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 21:04:36,998 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 21:04:36,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 09:04:34" (1/3) ... [2022-11-18 21:04:36,999 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47704feb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:04:36, skipping insertion in model container [2022-11-18 21:04:36,999 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:04:35" (2/3) ... [2022-11-18 21:04:37,000 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47704feb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:04:36, skipping insertion in model container [2022-11-18 21:04:37,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:04:36" (3/3) ... [2022-11-18 21:04:37,006 INFO L112 eAbstractionObserver]: Analyzing ICFG transmitter.12.cil.c [2022-11-18 21:04:37,025 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 21:04:37,026 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 21:04:37,120 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 21:04:37,131 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6b9204e4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 21:04:37,131 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-18 21:04:37,142 INFO L276 IsEmpty]: Start isEmpty. Operand has 378 states, 345 states have (on average 1.663768115942029) internal successors, (574), 347 states have internal predecessors, (574), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2022-11-18 21:04:37,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2022-11-18 21:04:37,177 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:04:37,178 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:04:37,179 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:04:37,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:04:37,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1515639638, now seen corresponding path program 1 times [2022-11-18 21:04:37,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:04:37,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706755849] [2022-11-18 21:04:37,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:04:37,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:04:37,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:37,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 21:04:37,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:37,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-18 21:04:37,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:37,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-18 21:04:37,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:37,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-18 21:04:37,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:37,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-11-18 21:04:37,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:37,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:04:37,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:04:37,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706755849] [2022-11-18 21:04:37,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706755849] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:04:37,837 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:04:37,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 21:04:37,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928387546] [2022-11-18 21:04:37,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:04:37,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 21:04:37,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:04:37,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 21:04:37,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 21:04:37,912 INFO L87 Difference]: Start difference. First operand has 378 states, 345 states have (on average 1.663768115942029) internal successors, (574), 347 states have internal predecessors, (574), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) Second operand has 5 states, 5 states have (on average 35.4) internal successors, (177), 3 states have internal predecessors, (177), 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) [2022-11-18 21:04:40,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:04:40,705 INFO L93 Difference]: Finished difference Result 883 states and 1467 transitions. [2022-11-18 21:04:40,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 21:04:40,709 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.4) internal successors, (177), 3 states have internal predecessors, (177), 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 187 [2022-11-18 21:04:40,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:04:40,737 INFO L225 Difference]: With dead ends: 883 [2022-11-18 21:04:40,738 INFO L226 Difference]: Without dead ends: 513 [2022-11-18 21:04:40,745 INFO L412 NwaCegarLoop]: 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 [2022-11-18 21:04:40,749 INFO L413 NwaCegarLoop]: 341 mSDtfsCounter, 1018 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 1014 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1041 SdHoareTripleChecker+Valid, 736 SdHoareTripleChecker+Invalid, 1068 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1014 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-18 21:04:40,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1041 Valid, 736 Invalid, 1068 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1014 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-18 21:04:40,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2022-11-18 21:04:40,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 373. [2022-11-18 21:04:40,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 341 states have (on average 1.5689149560117301) internal successors, (535), 342 states have internal predecessors, (535), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2022-11-18 21:04:40,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 585 transitions. [2022-11-18 21:04:40,930 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 585 transitions. Word has length 187 [2022-11-18 21:04:40,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:04:40,931 INFO L495 AbstractCegarLoop]: Abstraction has 373 states and 585 transitions. [2022-11-18 21:04:40,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.4) internal successors, (177), 3 states have internal predecessors, (177), 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) [2022-11-18 21:04:40,931 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 585 transitions. [2022-11-18 21:04:40,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2022-11-18 21:04:40,938 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:04:40,939 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:04:40,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 21:04:40,939 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:04:40,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:04:40,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1948674024, now seen corresponding path program 1 times [2022-11-18 21:04:40,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:04:40,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590771284] [2022-11-18 21:04:40,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:04:40,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:04:41,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:41,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 21:04:41,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:41,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-18 21:04:41,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:41,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-18 21:04:41,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:41,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-18 21:04:41,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:41,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-11-18 21:04:41,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:41,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:04:41,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:04:41,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590771284] [2022-11-18 21:04:41,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590771284] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:04:41,423 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:04:41,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 21:04:41,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419903896] [2022-11-18 21:04:41,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:04:41,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 21:04:41,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:04:41,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 21:04:41,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 21:04:41,427 INFO L87 Difference]: Start difference. First operand 373 states and 585 transitions. Second operand has 6 states, 6 states have (on average 29.5) internal successors, (177), 4 states have internal predecessors, (177), 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) [2022-11-18 21:04:45,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:04:45,532 INFO L93 Difference]: Finished difference Result 1376 states and 2217 transitions. [2022-11-18 21:04:45,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 21:04:45,533 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 29.5) internal successors, (177), 4 states have internal predecessors, (177), 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 187 [2022-11-18 21:04:45,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:04:45,543 INFO L225 Difference]: With dead ends: 1376 [2022-11-18 21:04:45,543 INFO L226 Difference]: Without dead ends: 1023 [2022-11-18 21:04:45,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-11-18 21:04:45,553 INFO L413 NwaCegarLoop]: 342 mSDtfsCounter, 1535 mSDsluCounter, 935 mSDsCounter, 0 mSdLazyCounter, 2320 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1553 SdHoareTripleChecker+Valid, 1277 SdHoareTripleChecker+Invalid, 2425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 2320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-18 21:04:45,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1553 Valid, 1277 Invalid, 2425 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [105 Valid, 2320 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-11-18 21:04:45,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1023 states. [2022-11-18 21:04:45,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1023 to 743. [2022-11-18 21:04:45,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 743 states, 684 states have (on average 1.5789473684210527) internal successors, (1080), 686 states have internal predecessors, (1080), 45 states have call successors, (45), 12 states have call predecessors, (45), 13 states have return successors, (48), 45 states have call predecessors, (48), 45 states have call successors, (48) [2022-11-18 21:04:45,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 1173 transitions. [2022-11-18 21:04:45,661 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 1173 transitions. Word has length 187 [2022-11-18 21:04:45,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:04:45,662 INFO L495 AbstractCegarLoop]: Abstraction has 743 states and 1173 transitions. [2022-11-18 21:04:45,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.5) internal successors, (177), 4 states have internal predecessors, (177), 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) [2022-11-18 21:04:45,662 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 1173 transitions. [2022-11-18 21:04:45,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2022-11-18 21:04:45,665 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:04:45,665 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:04:45,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 21:04:45,666 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:04:45,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:04:45,667 INFO L85 PathProgramCache]: Analyzing trace with hash -319262089, now seen corresponding path program 1 times [2022-11-18 21:04:45,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:04:45,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784848837] [2022-11-18 21:04:45,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:04:45,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:04:45,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:45,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 21:04:45,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:45,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-18 21:04:45,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:46,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-18 21:04:46,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:46,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-18 21:04:46,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:46,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-11-18 21:04:46,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:46,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:04:46,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:04:46,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784848837] [2022-11-18 21:04:46,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784848837] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:04:46,046 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:04:46,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 21:04:46,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402238169] [2022-11-18 21:04:46,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:04:46,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 21:04:46,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:04:46,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 21:04:46,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 21:04:46,049 INFO L87 Difference]: Start difference. First operand 743 states and 1173 transitions. Second operand has 7 states, 7 states have (on average 25.285714285714285) internal successors, (177), 5 states have internal predecessors, (177), 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) [2022-11-18 21:04:52,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:04:52,661 INFO L93 Difference]: Finished difference Result 2453 states and 3920 transitions. [2022-11-18 21:04:52,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 21:04:52,662 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.285714285714285) internal successors, (177), 5 states have internal predecessors, (177), 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 187 [2022-11-18 21:04:52,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:04:52,671 INFO L225 Difference]: With dead ends: 2453 [2022-11-18 21:04:52,671 INFO L226 Difference]: Without dead ends: 1730 [2022-11-18 21:04:52,673 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-11-18 21:04:52,675 INFO L413 NwaCegarLoop]: 569 mSDtfsCounter, 1690 mSDsluCounter, 1858 mSDsCounter, 0 mSdLazyCounter, 4517 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1708 SdHoareTripleChecker+Valid, 2427 SdHoareTripleChecker+Invalid, 4580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 4517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-11-18 21:04:52,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1708 Valid, 2427 Invalid, 4580 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [63 Valid, 4517 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2022-11-18 21:04:52,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1730 states. [2022-11-18 21:04:52,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1730 to 1087. [2022-11-18 21:04:52,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1087 states, 1001 states have (on average 1.5714285714285714) internal successors, (1573), 1004 states have internal predecessors, (1573), 65 states have call successors, (65), 18 states have call predecessors, (65), 20 states have return successors, (70), 66 states have call predecessors, (70), 65 states have call successors, (70) [2022-11-18 21:04:52,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 1708 transitions. [2022-11-18 21:04:52,813 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 1708 transitions. Word has length 187 [2022-11-18 21:04:52,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:04:52,814 INFO L495 AbstractCegarLoop]: Abstraction has 1087 states and 1708 transitions. [2022-11-18 21:04:52,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.285714285714285) internal successors, (177), 5 states have internal predecessors, (177), 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) [2022-11-18 21:04:52,815 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 1708 transitions. [2022-11-18 21:04:52,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2022-11-18 21:04:52,818 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:04:52,818 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:04:52,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 21:04:52,819 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:04:52,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:04:52,820 INFO L85 PathProgramCache]: Analyzing trace with hash -2043870411, now seen corresponding path program 1 times [2022-11-18 21:04:52,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:04:52,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349176133] [2022-11-18 21:04:52,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:04:52,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:04:52,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:52,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 21:04:52,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:53,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-18 21:04:53,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:53,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-18 21:04:53,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:53,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-18 21:04:53,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:53,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-11-18 21:04:53,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:53,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:04:53,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:04:53,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349176133] [2022-11-18 21:04:53,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349176133] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:04:53,140 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:04:53,140 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 21:04:53,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008780957] [2022-11-18 21:04:53,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:04:53,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 21:04:53,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:04:53,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 21:04:53,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 21:04:53,142 INFO L87 Difference]: Start difference. First operand 1087 states and 1708 transitions. Second operand has 7 states, 7 states have (on average 25.285714285714285) internal successors, (177), 5 states have internal predecessors, (177), 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) [2022-11-18 21:04:59,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:04:59,483 INFO L93 Difference]: Finished difference Result 3779 states and 6029 transitions. [2022-11-18 21:04:59,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 21:04:59,484 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.285714285714285) internal successors, (177), 5 states have internal predecessors, (177), 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 187 [2022-11-18 21:04:59,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:04:59,497 INFO L225 Difference]: With dead ends: 3779 [2022-11-18 21:04:59,498 INFO L226 Difference]: Without dead ends: 2712 [2022-11-18 21:04:59,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-11-18 21:04:59,503 INFO L413 NwaCegarLoop]: 567 mSDtfsCounter, 1688 mSDsluCounter, 1858 mSDsCounter, 0 mSdLazyCounter, 4513 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1706 SdHoareTripleChecker+Valid, 2425 SdHoareTripleChecker+Invalid, 4578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 4513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-11-18 21:04:59,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1706 Valid, 2425 Invalid, 4578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 4513 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-11-18 21:04:59,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2712 states. [2022-11-18 21:04:59,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2712 to 1776. [2022-11-18 21:04:59,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1776 states, 1636 states have (on average 1.56479217603912) internal successors, (2560), 1641 states have internal predecessors, (2560), 105 states have call successors, (105), 30 states have call predecessors, (105), 34 states have return successors, (118), 108 states have call predecessors, (118), 105 states have call successors, (118) [2022-11-18 21:04:59,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1776 states to 1776 states and 2783 transitions. [2022-11-18 21:04:59,753 INFO L78 Accepts]: Start accepts. Automaton has 1776 states and 2783 transitions. Word has length 187 [2022-11-18 21:04:59,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:04:59,753 INFO L495 AbstractCegarLoop]: Abstraction has 1776 states and 2783 transitions. [2022-11-18 21:04:59,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.285714285714285) internal successors, (177), 5 states have internal predecessors, (177), 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) [2022-11-18 21:04:59,754 INFO L276 IsEmpty]: Start isEmpty. Operand 1776 states and 2783 transitions. [2022-11-18 21:04:59,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2022-11-18 21:04:59,758 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:04:59,758 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:04:59,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 21:04:59,759 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:04:59,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:04:59,759 INFO L85 PathProgramCache]: Analyzing trace with hash -1545313609, now seen corresponding path program 1 times [2022-11-18 21:04:59,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:04:59,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234589681] [2022-11-18 21:04:59,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:04:59,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:04:59,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:59,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 21:04:59,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:59,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-18 21:04:59,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:00,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-18 21:05:00,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:00,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-18 21:05:00,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:00,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-11-18 21:05:00,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:00,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:05:00,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:05:00,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234589681] [2022-11-18 21:05:00,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234589681] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:05:00,114 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:05:00,114 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 21:05:00,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442405240] [2022-11-18 21:05:00,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:05:00,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 21:05:00,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:05:00,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 21:05:00,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 21:05:00,119 INFO L87 Difference]: Start difference. First operand 1776 states and 2783 transitions. Second operand has 7 states, 7 states have (on average 25.285714285714285) internal successors, (177), 5 states have internal predecessors, (177), 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) [2022-11-18 21:05:06,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:05:06,245 INFO L93 Difference]: Finished difference Result 6330 states and 10060 transitions. [2022-11-18 21:05:06,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 21:05:06,252 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.285714285714285) internal successors, (177), 5 states have internal predecessors, (177), 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 187 [2022-11-18 21:05:06,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:05:06,274 INFO L225 Difference]: With dead ends: 6330 [2022-11-18 21:05:06,274 INFO L226 Difference]: Without dead ends: 4574 [2022-11-18 21:05:06,280 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-11-18 21:05:06,282 INFO L413 NwaCegarLoop]: 373 mSDtfsCounter, 1805 mSDsluCounter, 1222 mSDsCounter, 0 mSdLazyCounter, 4104 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1823 SdHoareTripleChecker+Valid, 1595 SdHoareTripleChecker+Invalid, 4201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 4104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-11-18 21:05:06,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1823 Valid, 1595 Invalid, 4201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 4104 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-11-18 21:05:06,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4574 states. [2022-11-18 21:05:06,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4574 to 3155. [2022-11-18 21:05:06,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3155 states, 2907 states have (on average 1.5596835225318197) internal successors, (4534), 2916 states have internal predecessors, (4534), 185 states have call successors, (185), 54 states have call predecessors, (185), 62 states have return successors, (220), 192 states have call predecessors, (220), 185 states have call successors, (220) [2022-11-18 21:05:06,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3155 states to 3155 states and 4939 transitions. [2022-11-18 21:05:06,723 INFO L78 Accepts]: Start accepts. Automaton has 3155 states and 4939 transitions. Word has length 187 [2022-11-18 21:05:06,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:05:06,723 INFO L495 AbstractCegarLoop]: Abstraction has 3155 states and 4939 transitions. [2022-11-18 21:05:06,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.285714285714285) internal successors, (177), 5 states have internal predecessors, (177), 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) [2022-11-18 21:05:06,724 INFO L276 IsEmpty]: Start isEmpty. Operand 3155 states and 4939 transitions. [2022-11-18 21:05:06,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2022-11-18 21:05:06,729 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:05:06,730 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:05:06,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 21:05:06,730 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:05:06,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:05:06,731 INFO L85 PathProgramCache]: Analyzing trace with hash -975041803, now seen corresponding path program 1 times [2022-11-18 21:05:06,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:05:06,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99638692] [2022-11-18 21:05:06,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:06,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:05:06,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:06,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 21:05:06,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:06,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-18 21:05:06,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:07,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-18 21:05:07,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:07,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-18 21:05:07,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:07,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-11-18 21:05:07,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:07,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:05:07,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:05:07,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99638692] [2022-11-18 21:05:07,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99638692] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:05:07,108 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:05:07,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 21:05:07,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988629110] [2022-11-18 21:05:07,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:05:07,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 21:05:07,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:05:07,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 21:05:07,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 21:05:07,111 INFO L87 Difference]: Start difference. First operand 3155 states and 4939 transitions. Second operand has 7 states, 7 states have (on average 25.285714285714285) internal successors, (177), 5 states have internal predecessors, (177), 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) [2022-11-18 21:05:13,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:05:13,848 INFO L93 Difference]: Finished difference Result 11424 states and 18126 transitions. [2022-11-18 21:05:13,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 21:05:13,849 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.285714285714285) internal successors, (177), 5 states have internal predecessors, (177), 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 187 [2022-11-18 21:05:13,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:05:13,882 INFO L225 Difference]: With dead ends: 11424 [2022-11-18 21:05:13,883 INFO L226 Difference]: Without dead ends: 8289 [2022-11-18 21:05:13,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-11-18 21:05:13,893 INFO L413 NwaCegarLoop]: 567 mSDtfsCounter, 1686 mSDsluCounter, 1858 mSDsCounter, 0 mSdLazyCounter, 4471 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1704 SdHoareTripleChecker+Valid, 2425 SdHoareTripleChecker+Invalid, 4536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 4471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-11-18 21:05:13,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1704 Valid, 2425 Invalid, 4536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 4471 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-11-18 21:05:13,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8289 states. [2022-11-18 21:05:14,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8289 to 5927. [2022-11-18 21:05:14,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5927 states, 5463 states have (on average 1.5570199524071022) internal successors, (8506), 5480 states have internal predecessors, (8506), 345 states have call successors, (345), 102 states have call predecessors, (345), 118 states have return successors, (442), 360 states have call predecessors, (442), 345 states have call successors, (442) [2022-11-18 21:05:14,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5927 states to 5927 states and 9293 transitions. [2022-11-18 21:05:14,905 INFO L78 Accepts]: Start accepts. Automaton has 5927 states and 9293 transitions. Word has length 187 [2022-11-18 21:05:14,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:05:14,906 INFO L495 AbstractCegarLoop]: Abstraction has 5927 states and 9293 transitions. [2022-11-18 21:05:14,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.285714285714285) internal successors, (177), 5 states have internal predecessors, (177), 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) [2022-11-18 21:05:14,907 INFO L276 IsEmpty]: Start isEmpty. Operand 5927 states and 9293 transitions. [2022-11-18 21:05:14,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2022-11-18 21:05:14,919 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:05:14,919 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:05:14,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 21:05:14,920 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:05:14,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:05:14,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1761039693, now seen corresponding path program 1 times [2022-11-18 21:05:14,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:05:14,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823637811] [2022-11-18 21:05:14,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:14,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:05:14,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:15,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 21:05:15,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:15,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-18 21:05:15,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:15,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-18 21:05:15,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:15,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-18 21:05:15,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:15,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-11-18 21:05:15,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:15,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:05:15,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:05:15,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823637811] [2022-11-18 21:05:15,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823637811] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:05:15,302 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:05:15,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 21:05:15,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904504574] [2022-11-18 21:05:15,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:05:15,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 21:05:15,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:05:15,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 21:05:15,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 21:05:15,305 INFO L87 Difference]: Start difference. First operand 5927 states and 9293 transitions. Second operand has 7 states, 7 states have (on average 25.285714285714285) internal successors, (177), 5 states have internal predecessors, (177), 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) [2022-11-18 21:05:22,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:05:22,816 INFO L93 Difference]: Finished difference Result 21630 states and 34350 transitions. [2022-11-18 21:05:22,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 21:05:22,817 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.285714285714285) internal successors, (177), 5 states have internal predecessors, (177), 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 187 [2022-11-18 21:05:22,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:05:22,889 INFO L225 Difference]: With dead ends: 21630 [2022-11-18 21:05:22,889 INFO L226 Difference]: Without dead ends: 15723 [2022-11-18 21:05:22,909 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-11-18 21:05:22,910 INFO L413 NwaCegarLoop]: 567 mSDtfsCounter, 1685 mSDsluCounter, 1858 mSDsCounter, 0 mSdLazyCounter, 4458 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1703 SdHoareTripleChecker+Valid, 2425 SdHoareTripleChecker+Invalid, 4523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 4458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-11-18 21:05:22,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1703 Valid, 2425 Invalid, 4523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 4458 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-11-18 21:05:22,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15723 states. [2022-11-18 21:05:24,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15723 to 11484. [2022-11-18 21:05:24,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11484 states, 10588 states have (on average 1.555345674348319) internal successors, (16468), 10621 states have internal predecessors, (16468), 665 states have call successors, (665), 198 states have call predecessors, (665), 230 states have return successors, (940), 696 states have call predecessors, (940), 665 states have call successors, (940) [2022-11-18 21:05:24,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11484 states to 11484 states and 18073 transitions. [2022-11-18 21:05:24,454 INFO L78 Accepts]: Start accepts. Automaton has 11484 states and 18073 transitions. Word has length 187 [2022-11-18 21:05:24,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:05:24,456 INFO L495 AbstractCegarLoop]: Abstraction has 11484 states and 18073 transitions. [2022-11-18 21:05:24,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.285714285714285) internal successors, (177), 5 states have internal predecessors, (177), 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) [2022-11-18 21:05:24,473 INFO L276 IsEmpty]: Start isEmpty. Operand 11484 states and 18073 transitions. [2022-11-18 21:05:24,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2022-11-18 21:05:24,498 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:05:24,498 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:05:24,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 21:05:24,499 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:05:24,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:05:24,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1093657803, now seen corresponding path program 1 times [2022-11-18 21:05:24,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:05:24,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560205409] [2022-11-18 21:05:24,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:24,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:05:24,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:24,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 21:05:24,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:24,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-18 21:05:24,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:24,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-18 21:05:24,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:24,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-18 21:05:24,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:24,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-11-18 21:05:24,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:24,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:05:24,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:05:24,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560205409] [2022-11-18 21:05:24,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560205409] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:05:24,856 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:05:24,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 21:05:24,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059601939] [2022-11-18 21:05:24,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:05:24,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 21:05:24,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:05:24,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 21:05:24,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 21:05:24,859 INFO L87 Difference]: Start difference. First operand 11484 states and 18073 transitions. Second operand has 7 states, 7 states have (on average 25.285714285714285) internal successors, (177), 5 states have internal predecessors, (177), 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) [2022-11-18 21:05:29,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:05:29,137 INFO L93 Difference]: Finished difference Result 27246 states and 43532 transitions. [2022-11-18 21:05:29,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 21:05:29,138 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.285714285714285) internal successors, (177), 5 states have internal predecessors, (177), 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 187 [2022-11-18 21:05:29,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:05:29,196 INFO L225 Difference]: With dead ends: 27246 [2022-11-18 21:05:29,196 INFO L226 Difference]: Without dead ends: 15782 [2022-11-18 21:05:29,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-18 21:05:29,231 INFO L413 NwaCegarLoop]: 294 mSDtfsCounter, 1290 mSDsluCounter, 728 mSDsCounter, 0 mSdLazyCounter, 1609 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1309 SdHoareTripleChecker+Valid, 1022 SdHoareTripleChecker+Invalid, 1698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-18 21:05:29,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1309 Valid, 1022 Invalid, 1698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1609 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-18 21:05:29,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15782 states. [2022-11-18 21:05:31,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15782 to 11484. [2022-11-18 21:05:31,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11484 states, 10588 states have (on average 1.5522289384208539) internal successors, (16435), 10621 states have internal predecessors, (16435), 665 states have call successors, (665), 198 states have call predecessors, (665), 230 states have return successors, (940), 696 states have call predecessors, (940), 665 states have call successors, (940) [2022-11-18 21:05:31,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11484 states to 11484 states and 18040 transitions. [2022-11-18 21:05:31,058 INFO L78 Accepts]: Start accepts. Automaton has 11484 states and 18040 transitions. Word has length 187 [2022-11-18 21:05:31,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:05:31,059 INFO L495 AbstractCegarLoop]: Abstraction has 11484 states and 18040 transitions. [2022-11-18 21:05:31,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.285714285714285) internal successors, (177), 5 states have internal predecessors, (177), 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) [2022-11-18 21:05:31,059 INFO L276 IsEmpty]: Start isEmpty. Operand 11484 states and 18040 transitions. [2022-11-18 21:05:31,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2022-11-18 21:05:31,083 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:05:31,084 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:05:31,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 21:05:31,084 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:05:31,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:05:31,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1006080627, now seen corresponding path program 1 times [2022-11-18 21:05:31,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:05:31,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116186208] [2022-11-18 21:05:31,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:31,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:05:31,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:31,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 21:05:31,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:31,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-18 21:05:31,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:31,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-18 21:05:31,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:31,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-18 21:05:31,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:31,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-11-18 21:05:31,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:31,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:05:31,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:05:31,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116186208] [2022-11-18 21:05:31,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116186208] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:05:31,440 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:05:31,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 21:05:31,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189545534] [2022-11-18 21:05:31,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:05:31,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 21:05:31,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:05:31,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 21:05:31,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 21:05:31,447 INFO L87 Difference]: Start difference. First operand 11484 states and 18040 transitions. Second operand has 7 states, 7 states have (on average 25.285714285714285) internal successors, (177), 5 states have internal predecessors, (177), 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) [2022-11-18 21:05:41,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:05:41,495 INFO L93 Difference]: Finished difference Result 42007 states and 66756 transitions. [2022-11-18 21:05:41,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 21:05:41,496 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.285714285714285) internal successors, (177), 5 states have internal predecessors, (177), 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 187 [2022-11-18 21:05:41,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:05:41,641 INFO L225 Difference]: With dead ends: 42007 [2022-11-18 21:05:41,642 INFO L226 Difference]: Without dead ends: 30543 [2022-11-18 21:05:41,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-11-18 21:05:41,692 INFO L413 NwaCegarLoop]: 567 mSDtfsCounter, 1677 mSDsluCounter, 1858 mSDsCounter, 0 mSdLazyCounter, 4420 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1695 SdHoareTripleChecker+Valid, 2425 SdHoareTripleChecker+Invalid, 4485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 4420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-11-18 21:05:41,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1695 Valid, 2425 Invalid, 4485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 4420 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-11-18 21:05:41,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30543 states. [2022-11-18 21:05:44,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30543 to 22662. [2022-11-18 21:05:44,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22662 states, 20902 states have (on average 1.5504257965744905) internal successors, (32407), 20967 states have internal predecessors, (32407), 1305 states have call successors, (1305), 390 states have call predecessors, (1305), 454 states have return successors, (2098), 1368 states have call predecessors, (2098), 1305 states have call successors, (2098) [2022-11-18 21:05:44,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22662 states to 22662 states and 35810 transitions. [2022-11-18 21:05:44,919 INFO L78 Accepts]: Start accepts. Automaton has 22662 states and 35810 transitions. Word has length 187 [2022-11-18 21:05:44,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:05:44,920 INFO L495 AbstractCegarLoop]: Abstraction has 22662 states and 35810 transitions. [2022-11-18 21:05:44,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.285714285714285) internal successors, (177), 5 states have internal predecessors, (177), 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) [2022-11-18 21:05:44,920 INFO L276 IsEmpty]: Start isEmpty. Operand 22662 states and 35810 transitions. [2022-11-18 21:05:44,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2022-11-18 21:05:44,960 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:05:44,960 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:05:44,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 21:05:44,961 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:05:44,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:05:44,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1350908789, now seen corresponding path program 1 times [2022-11-18 21:05:44,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:05:44,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003676816] [2022-11-18 21:05:44,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:44,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:05:44,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:45,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 21:05:45,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:45,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-18 21:05:45,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:45,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-18 21:05:45,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:45,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-18 21:05:45,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:45,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-11-18 21:05:45,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:45,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:05:45,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:05:45,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003676816] [2022-11-18 21:05:45,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003676816] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:05:45,254 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:05:45,255 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 21:05:45,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035638517] [2022-11-18 21:05:45,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:05:45,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 21:05:45,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:05:45,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 21:05:45,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 21:05:45,256 INFO L87 Difference]: Start difference. First operand 22662 states and 35810 transitions. Second operand has 7 states, 7 states have (on average 25.285714285714285) internal successors, (177), 5 states have internal predecessors, (177), 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) [2022-11-18 21:05:59,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:05:59,739 INFO L93 Difference]: Finished difference Result 82831 states and 132444 transitions. [2022-11-18 21:05:59,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 21:05:59,740 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.285714285714285) internal successors, (177), 5 states have internal predecessors, (177), 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 187 [2022-11-18 21:05:59,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:05:59,992 INFO L225 Difference]: With dead ends: 82831 [2022-11-18 21:05:59,993 INFO L226 Difference]: Without dead ends: 60189 [2022-11-18 21:06:00,073 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-11-18 21:06:00,076 INFO L413 NwaCegarLoop]: 567 mSDtfsCounter, 1676 mSDsluCounter, 1858 mSDsCounter, 0 mSdLazyCounter, 4407 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1694 SdHoareTripleChecker+Valid, 2425 SdHoareTripleChecker+Invalid, 4472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 4407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-11-18 21:06:00,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1694 Valid, 2425 Invalid, 4472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 4407 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-11-18 21:06:00,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60189 states. [2022-11-18 21:06:06,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60189 to 45079. [2022-11-18 21:06:06,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45079 states, 41591 states have (on average 1.5493977062345219) internal successors, (64441), 41720 states have internal predecessors, (64441), 2585 states have call successors, (2585), 774 states have call predecessors, (2585), 902 states have return successors, (4900), 2712 states have call predecessors, (4900), 2585 states have call successors, (4900) [2022-11-18 21:06:06,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45079 states to 45079 states and 71926 transitions. [2022-11-18 21:06:06,610 INFO L78 Accepts]: Start accepts. Automaton has 45079 states and 71926 transitions. Word has length 187 [2022-11-18 21:06:06,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:06:06,610 INFO L495 AbstractCegarLoop]: Abstraction has 45079 states and 71926 transitions. [2022-11-18 21:06:06,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.285714285714285) internal successors, (177), 5 states have internal predecessors, (177), 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) [2022-11-18 21:06:06,611 INFO L276 IsEmpty]: Start isEmpty. Operand 45079 states and 71926 transitions. [2022-11-18 21:06:06,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2022-11-18 21:06:06,693 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:06:06,694 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:06:06,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 21:06:06,694 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:06:06,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:06:06,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1963103693, now seen corresponding path program 1 times [2022-11-18 21:06:06,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:06:06,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814740275] [2022-11-18 21:06:06,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:06:06,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:06:06,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:06,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 21:06:06,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:06,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-18 21:06:06,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:06,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-18 21:06:06,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:06,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-18 21:06:06,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:07,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-11-18 21:06:07,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:07,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:06:07,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:06:07,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814740275] [2022-11-18 21:06:07,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814740275] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:06:07,008 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:06:07,008 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 21:06:07,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918299923] [2022-11-18 21:06:07,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:06:07,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 21:06:07,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:06:07,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 21:06:07,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 21:06:07,011 INFO L87 Difference]: Start difference. First operand 45079 states and 71926 transitions. Second operand has 7 states, 7 states have (on average 25.285714285714285) internal successors, (177), 5 states have internal predecessors, (177), 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)