./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label01.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b 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_6078a21c-5797-423d-a147-291a8742be4b/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6078a21c-5797-423d-a147-291a8742be4b/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6078a21c-5797-423d-a147-291a8742be4b/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6078a21c-5797-423d-a147-291a8742be4b/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label01.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6078a21c-5797-423d-a147-291a8742be4b/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6078a21c-5797-423d-a147-291a8742be4b/bin/uautomizer-ug76WZFUDN --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 3a476794b18ee3dc86c949acac0694757499ecd42c9edf7d0e83ac67cafd5af8 --- 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-6b4ec56 [2022-11-20 10:54:09,305 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:54:09,308 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:54:09,354 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:54:09,357 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:54:09,359 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:54:09,362 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:54:09,364 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:54:09,366 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:54:09,367 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:54:09,368 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:54:09,369 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:54:09,370 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:54:09,371 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:54:09,372 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:54:09,373 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:54:09,374 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:54:09,375 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:54:09,377 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:54:09,379 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:54:09,380 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:54:09,387 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:54:09,388 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:54:09,394 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:54:09,398 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:54:09,405 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:54:09,406 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:54:09,407 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:54:09,407 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:54:09,408 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:54:09,409 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:54:09,410 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:54:09,411 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:54:09,411 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:54:09,414 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:54:09,415 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:54:09,416 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:54:09,417 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:54:09,418 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:54:09,420 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:54:09,421 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:54:09,422 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6078a21c-5797-423d-a147-291a8742be4b/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 10:54:09,457 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:54:09,464 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:54:09,465 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:54:09,465 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:54:09,466 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 10:54:09,467 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 10:54:09,468 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:54:09,468 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:54:09,468 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:54:09,469 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:54:09,470 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 10:54:09,470 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 10:54:09,470 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 10:54:09,471 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:54:09,471 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 10:54:09,471 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 10:54:09,471 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 10:54:09,472 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 10:54:09,472 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 10:54:09,472 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:54:09,472 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 10:54:09,473 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:54:09,473 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:54:09,473 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 10:54:09,473 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:54:09,474 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:54:09,474 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 10:54:09,490 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 10:54:09,490 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 10:54:09,491 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 10:54:09,491 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 10:54:09,491 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 10:54:09,491 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 10:54:09,491 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_6078a21c-5797-423d-a147-291a8742be4b/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6078a21c-5797-423d-a147-291a8742be4b/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3a476794b18ee3dc86c949acac0694757499ecd42c9edf7d0e83ac67cafd5af8 [2022-11-20 10:54:09,809 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:54:09,831 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:54:09,833 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:54:09,835 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:54:09,835 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:54:09,837 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6078a21c-5797-423d-a147-291a8742be4b/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label01.c [2022-11-20 10:54:12,944 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:54:13,455 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:54:13,456 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6078a21c-5797-423d-a147-291a8742be4b/sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label01.c [2022-11-20 10:54:13,491 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6078a21c-5797-423d-a147-291a8742be4b/bin/uautomizer-ug76WZFUDN/data/5e0da0c4d/7755c9589f644087961994b9c0ce4381/FLAG9177dd5d6 [2022-11-20 10:54:13,507 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6078a21c-5797-423d-a147-291a8742be4b/bin/uautomizer-ug76WZFUDN/data/5e0da0c4d/7755c9589f644087961994b9c0ce4381 [2022-11-20 10:54:13,510 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:54:13,511 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:54:13,513 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:54:13,513 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:54:13,517 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:54:13,518 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:54:13" (1/1) ... [2022-11-20 10:54:13,520 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78ada3d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:54:13, skipping insertion in model container [2022-11-20 10:54:13,520 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:54:13" (1/1) ... [2022-11-20 10:54:13,528 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:54:13,676 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:54:13,979 WARN L237 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_6078a21c-5797-423d-a147-291a8742be4b/sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label01.c[6487,6500] [2022-11-20 10:54:14,069 WARN L237 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_6078a21c-5797-423d-a147-291a8742be4b/sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label01.c[12042,12055] [2022-11-20 10:54:15,147 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:54:15,160 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 10:54:15,210 WARN L237 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_6078a21c-5797-423d-a147-291a8742be4b/sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label01.c[6487,6500] [2022-11-20 10:54:15,222 WARN L237 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_6078a21c-5797-423d-a147-291a8742be4b/sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label01.c[12042,12055] [2022-11-20 10:54:15,885 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:54:15,917 INFO L208 MainTranslator]: Completed translation [2022-11-20 10:54:15,917 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:54:15 WrapperNode [2022-11-20 10:54:15,918 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 10:54:15,919 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 10:54:15,919 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 10:54:15,919 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 10:54:15,928 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:54:15" (1/1) ... [2022-11-20 10:54:15,991 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:54:15" (1/1) ... [2022-11-20 10:54:16,319 INFO L138 Inliner]: procedures = 35, calls = 20, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 4965 [2022-11-20 10:54:16,320 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 10:54:16,320 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 10:54:16,321 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 10:54:16,321 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 10:54:16,331 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:54:15" (1/1) ... [2022-11-20 10:54:16,332 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:54:15" (1/1) ... [2022-11-20 10:54:16,384 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:54:15" (1/1) ... [2022-11-20 10:54:16,384 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:54:15" (1/1) ... [2022-11-20 10:54:16,641 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:54:15" (1/1) ... [2022-11-20 10:54:16,678 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:54:15" (1/1) ... [2022-11-20 10:54:16,726 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:54:15" (1/1) ... [2022-11-20 10:54:16,740 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:54:15" (1/1) ... [2022-11-20 10:54:16,863 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 10:54:16,864 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 10:54:16,864 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 10:54:16,864 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 10:54:16,865 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:54:15" (1/1) ... [2022-11-20 10:54:16,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:54:16,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6078a21c-5797-423d-a147-291a8742be4b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:54:16,896 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6078a21c-5797-423d-a147-291a8742be4b/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 10:54:16,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6078a21c-5797-423d-a147-291a8742be4b/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 10:54:16,945 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 10:54:16,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 10:54:16,945 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 10:54:16,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 10:54:17,053 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 10:54:17,055 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 10:54:22,297 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 10:54:22,311 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 10:54:22,312 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-20 10:54:22,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:54:22 BoogieIcfgContainer [2022-11-20 10:54:22,315 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 10:54:22,318 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 10:54:22,318 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 10:54:22,321 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 10:54:22,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:54:13" (1/3) ... [2022-11-20 10:54:22,322 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@645a7db3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:54:22, skipping insertion in model container [2022-11-20 10:54:22,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:54:15" (2/3) ... [2022-11-20 10:54:22,323 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@645a7db3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:54:22, skipping insertion in model container [2022-11-20 10:54:22,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:54:22" (3/3) ... [2022-11-20 10:54:22,325 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label01.c [2022-11-20 10:54:22,390 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 10:54:22,390 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-20 10:54:22,469 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:54:22,477 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;@65ed9aef, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:54:22,477 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-20 10:54:22,486 INFO L276 IsEmpty]: Start isEmpty. Operand has 874 states, 871 states have (on average 1.9058553386911596) internal successors, (1660), 873 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:22,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-20 10:54:22,495 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:54:22,495 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] [2022-11-20 10:54:22,496 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:54:22,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:54:22,502 INFO L85 PathProgramCache]: Analyzing trace with hash -934405548, now seen corresponding path program 1 times [2022-11-20 10:54:22,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:54:22,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205262770] [2022-11-20 10:54:22,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:22,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:54:22,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:22,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:54:22,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:54:22,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205262770] [2022-11-20 10:54:22,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205262770] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:54:22,822 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:54:22,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 10:54:22,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983574592] [2022-11-20 10:54:22,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:54:22,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 10:54:22,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:54:22,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 10:54:22,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 10:54:22,873 INFO L87 Difference]: Start difference. First operand has 874 states, 871 states have (on average 1.9058553386911596) internal successors, (1660), 873 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:22,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:54:22,985 INFO L93 Difference]: Finished difference Result 1724 states and 3278 transitions. [2022-11-20 10:54:22,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 10:54:22,995 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-11-20 10:54:22,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:54:23,017 INFO L225 Difference]: With dead ends: 1724 [2022-11-20 10:54:23,024 INFO L226 Difference]: Without dead ends: 808 [2022-11-20 10:54:23,032 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 10:54:23,036 INFO L413 NwaCegarLoop]: 1591 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1591 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:54:23,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1591 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:54:23,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2022-11-20 10:54:23,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 808. [2022-11-20 10:54:23,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 808 states, 806 states have (on average 1.8945409429280398) internal successors, (1527), 807 states have internal predecessors, (1527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:23,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 1527 transitions. [2022-11-20 10:54:23,141 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 1527 transitions. Word has length 20 [2022-11-20 10:54:23,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:54:23,142 INFO L495 AbstractCegarLoop]: Abstraction has 808 states and 1527 transitions. [2022-11-20 10:54:23,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:23,145 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 1527 transitions. [2022-11-20 10:54:23,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-20 10:54:23,146 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:54:23,146 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] [2022-11-20 10:54:23,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 10:54:23,147 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:54:23,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:54:23,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1945522798, now seen corresponding path program 1 times [2022-11-20 10:54:23,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:54:23,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901294245] [2022-11-20 10:54:23,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:23,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:54:23,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:23,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:54:23,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:54:23,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901294245] [2022-11-20 10:54:23,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901294245] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:54:23,404 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:54:23,404 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:54:23,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677092395] [2022-11-20 10:54:23,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:54:23,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:54:23,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:54:23,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:54:23,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:54:23,410 INFO L87 Difference]: Start difference. First operand 808 states and 1527 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:23,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:54:23,591 INFO L93 Difference]: Finished difference Result 844 states and 1581 transitions. [2022-11-20 10:54:23,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:54:23,592 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-11-20 10:54:23,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:54:23,597 INFO L225 Difference]: With dead ends: 844 [2022-11-20 10:54:23,597 INFO L226 Difference]: Without dead ends: 808 [2022-11-20 10:54:23,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:54:23,599 INFO L413 NwaCegarLoop]: 1525 mSDtfsCounter, 3 mSDsluCounter, 4556 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6081 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:54:23,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6081 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:54:23,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2022-11-20 10:54:23,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 808. [2022-11-20 10:54:23,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 808 states, 806 states have (on average 1.8746898263027296) internal successors, (1511), 807 states have internal predecessors, (1511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:23,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 1511 transitions. [2022-11-20 10:54:23,633 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 1511 transitions. Word has length 20 [2022-11-20 10:54:23,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:54:23,633 INFO L495 AbstractCegarLoop]: Abstraction has 808 states and 1511 transitions. [2022-11-20 10:54:23,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:23,634 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 1511 transitions. [2022-11-20 10:54:23,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-20 10:54:23,635 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:54:23,635 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] [2022-11-20 10:54:23,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 10:54:23,636 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:54:23,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:54:23,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1226597962, now seen corresponding path program 1 times [2022-11-20 10:54:23,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:54:23,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773348568] [2022-11-20 10:54:23,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:23,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:54:23,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:23,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:54:23,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:54:23,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773348568] [2022-11-20 10:54:23,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773348568] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:54:23,873 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:54:23,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:54:23,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347401778] [2022-11-20 10:54:23,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:54:23,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:54:23,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:54:23,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:54:23,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:54:23,876 INFO L87 Difference]: Start difference. First operand 808 states and 1511 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:24,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:54:24,043 INFO L93 Difference]: Finished difference Result 1000 states and 1811 transitions. [2022-11-20 10:54:24,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 10:54:24,044 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2022-11-20 10:54:24,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:54:24,052 INFO L225 Difference]: With dead ends: 1000 [2022-11-20 10:54:24,052 INFO L226 Difference]: Without dead ends: 968 [2022-11-20 10:54:24,058 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:54:24,062 INFO L413 NwaCegarLoop]: 1505 mSDtfsCounter, 4682 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4682 SdHoareTripleChecker+Valid, 1758 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:54:24,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4682 Valid, 1758 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:54:24,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2022-11-20 10:54:24,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 838. [2022-11-20 10:54:24,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 838 states, 836 states have (on average 1.8636363636363635) internal successors, (1558), 837 states have internal predecessors, (1558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:24,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 838 states to 838 states and 1558 transitions. [2022-11-20 10:54:24,114 INFO L78 Accepts]: Start accepts. Automaton has 838 states and 1558 transitions. Word has length 35 [2022-11-20 10:54:24,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:54:24,115 INFO L495 AbstractCegarLoop]: Abstraction has 838 states and 1558 transitions. [2022-11-20 10:54:24,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:24,115 INFO L276 IsEmpty]: Start isEmpty. Operand 838 states and 1558 transitions. [2022-11-20 10:54:24,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-20 10:54:24,117 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:54:24,117 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] [2022-11-20 10:54:24,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 10:54:24,117 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:54:24,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:54:24,118 INFO L85 PathProgramCache]: Analyzing trace with hash 523901274, now seen corresponding path program 1 times [2022-11-20 10:54:24,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:54:24,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064946166] [2022-11-20 10:54:24,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:24,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:54:24,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:24,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:54:24,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:54:24,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064946166] [2022-11-20 10:54:24,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064946166] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:54:24,254 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:54:24,254 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:54:24,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218467496] [2022-11-20 10:54:24,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:54:24,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:54:24,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:54:24,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:54:24,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:54:24,257 INFO L87 Difference]: Start difference. First operand 838 states and 1558 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:24,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:54:24,324 INFO L93 Difference]: Finished difference Result 951 states and 1733 transitions. [2022-11-20 10:54:24,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:54:24,325 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2022-11-20 10:54:24,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:54:24,330 INFO L225 Difference]: With dead ends: 951 [2022-11-20 10:54:24,330 INFO L226 Difference]: Without dead ends: 889 [2022-11-20 10:54:24,333 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:54:24,342 INFO L413 NwaCegarLoop]: 1507 mSDtfsCounter, 1468 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1468 SdHoareTripleChecker+Valid, 1550 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:54:24,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1468 Valid, 1550 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:54:24,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2022-11-20 10:54:24,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 885. [2022-11-20 10:54:24,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 885 states, 883 states have (on average 1.8437146092865233) internal successors, (1628), 884 states have internal predecessors, (1628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:24,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1628 transitions. [2022-11-20 10:54:24,378 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1628 transitions. Word has length 37 [2022-11-20 10:54:24,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:54:24,379 INFO L495 AbstractCegarLoop]: Abstraction has 885 states and 1628 transitions. [2022-11-20 10:54:24,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:24,380 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1628 transitions. [2022-11-20 10:54:24,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-20 10:54:24,387 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:54:24,387 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] [2022-11-20 10:54:24,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 10:54:24,388 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:54:24,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:54:24,389 INFO L85 PathProgramCache]: Analyzing trace with hash 590394786, now seen corresponding path program 1 times [2022-11-20 10:54:24,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:54:24,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418745374] [2022-11-20 10:54:24,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:24,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:54:24,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:24,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:54:24,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:54:24,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418745374] [2022-11-20 10:54:24,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418745374] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:54:24,599 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:54:24,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:54:24,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124266985] [2022-11-20 10:54:24,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:54:24,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:54:24,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:54:24,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:54:24,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:54:24,602 INFO L87 Difference]: Start difference. First operand 885 states and 1628 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:24,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:54:24,715 INFO L93 Difference]: Finished difference Result 996 states and 1796 transitions. [2022-11-20 10:54:24,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:54:24,716 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2022-11-20 10:54:24,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:54:24,720 INFO L225 Difference]: With dead ends: 996 [2022-11-20 10:54:24,721 INFO L226 Difference]: Without dead ends: 887 [2022-11-20 10:54:24,721 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:54:24,722 INFO L413 NwaCegarLoop]: 1506 mSDtfsCounter, 2990 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2990 SdHoareTripleChecker+Valid, 1598 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:54:24,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2990 Valid, 1598 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:54:24,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 887 states. [2022-11-20 10:54:24,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 887 to 885. [2022-11-20 10:54:24,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 885 states, 883 states have (on average 1.8414496036240091) internal successors, (1626), 884 states have internal predecessors, (1626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:24,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1626 transitions. [2022-11-20 10:54:24,759 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1626 transitions. Word has length 37 [2022-11-20 10:54:24,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:54:24,760 INFO L495 AbstractCegarLoop]: Abstraction has 885 states and 1626 transitions. [2022-11-20 10:54:24,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:24,760 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1626 transitions. [2022-11-20 10:54:24,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-20 10:54:24,761 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:54:24,762 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] [2022-11-20 10:54:24,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 10:54:24,762 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:54:24,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:54:24,763 INFO L85 PathProgramCache]: Analyzing trace with hash 707645968, now seen corresponding path program 1 times [2022-11-20 10:54:24,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:54:24,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313601741] [2022-11-20 10:54:24,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:24,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:54:24,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:25,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:54:25,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:54:25,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313601741] [2022-11-20 10:54:25,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313601741] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:54:25,022 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:54:25,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 10:54:25,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240772447] [2022-11-20 10:54:25,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:54:25,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 10:54:25,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:54:25,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 10:54:25,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:54:25,025 INFO L87 Difference]: Start difference. First operand 885 states and 1626 transitions. Second operand has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:25,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:54:25,242 INFO L93 Difference]: Finished difference Result 990 states and 1780 transitions. [2022-11-20 10:54:25,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 10:54:25,243 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2022-11-20 10:54:25,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:54:25,247 INFO L225 Difference]: With dead ends: 990 [2022-11-20 10:54:25,248 INFO L226 Difference]: Without dead ends: 988 [2022-11-20 10:54:25,248 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-11-20 10:54:25,249 INFO L413 NwaCegarLoop]: 1548 mSDtfsCounter, 295 mSDsluCounter, 8894 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 10442 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:54:25,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [295 Valid, 10442 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:54:25,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 988 states. [2022-11-20 10:54:25,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 988 to 891. [2022-11-20 10:54:25,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 891 states, 889 states have (on average 1.8346456692913387) internal successors, (1631), 890 states have internal predecessors, (1631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:25,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 1631 transitions. [2022-11-20 10:54:25,323 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 1631 transitions. Word has length 38 [2022-11-20 10:54:25,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:54:25,323 INFO L495 AbstractCegarLoop]: Abstraction has 891 states and 1631 transitions. [2022-11-20 10:54:25,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:25,324 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 1631 transitions. [2022-11-20 10:54:25,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-20 10:54:25,325 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:54:25,325 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] [2022-11-20 10:54:25,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 10:54:25,325 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:54:25,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:54:25,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1903217474, now seen corresponding path program 1 times [2022-11-20 10:54:25,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:54:25,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145989746] [2022-11-20 10:54:25,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:25,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:54:25,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:25,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:54:25,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:54:25,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145989746] [2022-11-20 10:54:25,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145989746] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:54:25,400 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:54:25,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:54:25,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147776997] [2022-11-20 10:54:25,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:54:25,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:54:25,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:54:25,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:54:25,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:54:25,402 INFO L87 Difference]: Start difference. First operand 891 states and 1631 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:25,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:54:25,460 INFO L93 Difference]: Finished difference Result 1105 states and 1943 transitions. [2022-11-20 10:54:25,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:54:25,461 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-11-20 10:54:25,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:54:25,465 INFO L225 Difference]: With dead ends: 1105 [2022-11-20 10:54:25,466 INFO L226 Difference]: Without dead ends: 990 [2022-11-20 10:54:25,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:54:25,469 INFO L413 NwaCegarLoop]: 1528 mSDtfsCounter, 1475 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1475 SdHoareTripleChecker+Valid, 1587 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:54:25,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1475 Valid, 1587 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:54:25,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 990 states. [2022-11-20 10:54:25,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 990 to 988. [2022-11-20 10:54:25,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 988 states, 986 states have (on average 1.793103448275862) internal successors, (1768), 987 states have internal predecessors, (1768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:25,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 988 states to 988 states and 1768 transitions. [2022-11-20 10:54:25,517 INFO L78 Accepts]: Start accepts. Automaton has 988 states and 1768 transitions. Word has length 39 [2022-11-20 10:54:25,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:54:25,519 INFO L495 AbstractCegarLoop]: Abstraction has 988 states and 1768 transitions. [2022-11-20 10:54:25,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:25,520 INFO L276 IsEmpty]: Start isEmpty. Operand 988 states and 1768 transitions. [2022-11-20 10:54:25,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-20 10:54:25,521 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:54:25,522 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] [2022-11-20 10:54:25,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 10:54:25,522 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:54:25,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:54:25,523 INFO L85 PathProgramCache]: Analyzing trace with hash 122284610, now seen corresponding path program 1 times [2022-11-20 10:54:25,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:54:25,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792210428] [2022-11-20 10:54:25,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:25,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:54:25,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:25,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:54:25,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:54:25,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792210428] [2022-11-20 10:54:25,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792210428] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:54:25,575 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:54:25,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:54:25,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080925197] [2022-11-20 10:54:25,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:54:25,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:54:25,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:54:25,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:54:25,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:54:25,579 INFO L87 Difference]: Start difference. First operand 988 states and 1768 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:25,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:54:25,654 INFO L93 Difference]: Finished difference Result 1380 states and 2326 transitions. [2022-11-20 10:54:25,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:54:25,654 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-11-20 10:54:25,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:54:25,660 INFO L225 Difference]: With dead ends: 1380 [2022-11-20 10:54:25,660 INFO L226 Difference]: Without dead ends: 1168 [2022-11-20 10:54:25,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:54:25,661 INFO L413 NwaCegarLoop]: 1538 mSDtfsCounter, 1477 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1477 SdHoareTripleChecker+Valid, 1593 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:54:25,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1477 Valid, 1593 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:54:25,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1168 states. [2022-11-20 10:54:25,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1168 to 1166. [2022-11-20 10:54:25,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1166 states, 1164 states have (on average 1.7268041237113403) internal successors, (2010), 1165 states have internal predecessors, (2010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:25,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1166 states to 1166 states and 2010 transitions. [2022-11-20 10:54:25,735 INFO L78 Accepts]: Start accepts. Automaton has 1166 states and 2010 transitions. Word has length 39 [2022-11-20 10:54:25,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:54:25,735 INFO L495 AbstractCegarLoop]: Abstraction has 1166 states and 2010 transitions. [2022-11-20 10:54:25,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:25,736 INFO L276 IsEmpty]: Start isEmpty. Operand 1166 states and 2010 transitions. [2022-11-20 10:54:25,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-20 10:54:25,738 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:54:25,743 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] [2022-11-20 10:54:25,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 10:54:25,743 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:54:25,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:54:25,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1688735299, now seen corresponding path program 1 times [2022-11-20 10:54:25,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:54:25,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972144161] [2022-11-20 10:54:25,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:25,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:54:25,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:25,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:54:25,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:54:25,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972144161] [2022-11-20 10:54:25,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972144161] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:54:25,787 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:54:25,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:54:25,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864756309] [2022-11-20 10:54:25,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:54:25,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:54:25,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:54:25,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:54:25,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:54:25,790 INFO L87 Difference]: Start difference. First operand 1166 states and 2010 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:25,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:54:25,892 INFO L93 Difference]: Finished difference Result 1589 states and 2616 transitions. [2022-11-20 10:54:25,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:54:25,894 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2022-11-20 10:54:25,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:54:25,900 INFO L225 Difference]: With dead ends: 1589 [2022-11-20 10:54:25,900 INFO L226 Difference]: Without dead ends: 1354 [2022-11-20 10:54:25,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:54:25,903 INFO L413 NwaCegarLoop]: 1543 mSDtfsCounter, 1476 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1476 SdHoareTripleChecker+Valid, 1594 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:54:25,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1476 Valid, 1594 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:54:25,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1354 states. [2022-11-20 10:54:25,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1354 to 1352. [2022-11-20 10:54:25,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1352 states, 1350 states have (on average 1.677037037037037) internal successors, (2264), 1351 states have internal predecessors, (2264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:25,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 2264 transitions. [2022-11-20 10:54:25,998 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 2264 transitions. Word has length 41 [2022-11-20 10:54:25,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:54:25,998 INFO L495 AbstractCegarLoop]: Abstraction has 1352 states and 2264 transitions. [2022-11-20 10:54:25,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:25,999 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 2264 transitions. [2022-11-20 10:54:25,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-20 10:54:25,999 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:54:25,999 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] [2022-11-20 10:54:26,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 10:54:26,000 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:54:26,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:54:26,001 INFO L85 PathProgramCache]: Analyzing trace with hash -452716683, now seen corresponding path program 1 times [2022-11-20 10:54:26,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:54:26,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488320748] [2022-11-20 10:54:26,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:26,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:54:26,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:26,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:54:26,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:54:26,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488320748] [2022-11-20 10:54:26,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488320748] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:54:26,168 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:54:26,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:54:26,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331481527] [2022-11-20 10:54:26,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:54:26,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:54:26,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:54:26,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:54:26,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:54:26,170 INFO L87 Difference]: Start difference. First operand 1352 states and 2264 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:35,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:54:35,129 INFO L93 Difference]: Finished difference Result 3607 states and 6573 transitions. [2022-11-20 10:54:35,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:54:35,130 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-11-20 10:54:35,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:54:35,140 INFO L225 Difference]: With dead ends: 3607 [2022-11-20 10:54:35,140 INFO L226 Difference]: Without dead ends: 2854 [2022-11-20 10:54:35,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:54:35,143 INFO L413 NwaCegarLoop]: 747 mSDtfsCounter, 2361 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5354 mSolverCounterSat, 1153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2361 SdHoareTripleChecker+Valid, 765 SdHoareTripleChecker+Invalid, 6507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1153 IncrementalHoareTripleChecker+Valid, 5354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2022-11-20 10:54:35,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2361 Valid, 765 Invalid, 6507 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1153 Valid, 5354 Invalid, 0 Unknown, 0 Unchecked, 8.6s Time] [2022-11-20 10:54:35,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2854 states. [2022-11-20 10:54:35,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2854 to 2854. [2022-11-20 10:54:35,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2854 states, 2852 states have (on average 1.535063113604488) internal successors, (4378), 2853 states have internal predecessors, (4378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:35,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2854 states to 2854 states and 4378 transitions. [2022-11-20 10:54:35,283 INFO L78 Accepts]: Start accepts. Automaton has 2854 states and 4378 transitions. Word has length 48 [2022-11-20 10:54:35,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:54:35,284 INFO L495 AbstractCegarLoop]: Abstraction has 2854 states and 4378 transitions. [2022-11-20 10:54:35,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:35,284 INFO L276 IsEmpty]: Start isEmpty. Operand 2854 states and 4378 transitions. [2022-11-20 10:54:35,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-20 10:54:35,285 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:54:35,285 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:54:35,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 10:54:35,286 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:54:35,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:54:35,287 INFO L85 PathProgramCache]: Analyzing trace with hash 923003988, now seen corresponding path program 1 times [2022-11-20 10:54:35,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:54:35,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815930771] [2022-11-20 10:54:35,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:35,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:54:35,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:35,412 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 10:54:35,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:54:35,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815930771] [2022-11-20 10:54:35,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815930771] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:54:35,413 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:54:35,414 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:54:35,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705954615] [2022-11-20 10:54:35,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:54:35,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:54:35,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:54:35,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:54:35,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:54:35,417 INFO L87 Difference]: Start difference. First operand 2854 states and 4378 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:35,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:54:35,895 INFO L93 Difference]: Finished difference Result 4710 states and 6958 transitions. [2022-11-20 10:54:35,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:54:35,896 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2022-11-20 10:54:35,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:54:35,911 INFO L225 Difference]: With dead ends: 4710 [2022-11-20 10:54:35,912 INFO L226 Difference]: Without dead ends: 4136 [2022-11-20 10:54:35,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:54:35,915 INFO L413 NwaCegarLoop]: 1551 mSDtfsCounter, 3058 mSDsluCounter, 1604 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3058 SdHoareTripleChecker+Valid, 3155 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:54:35,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3058 Valid, 3155 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:54:35,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4136 states. [2022-11-20 10:54:36,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4136 to 3426. [2022-11-20 10:54:36,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3426 states, 3424 states have (on average 1.5087616822429906) internal successors, (5166), 3425 states have internal predecessors, (5166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:36,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3426 states to 3426 states and 5166 transitions. [2022-11-20 10:54:36,261 INFO L78 Accepts]: Start accepts. Automaton has 3426 states and 5166 transitions. Word has length 54 [2022-11-20 10:54:36,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:54:36,263 INFO L495 AbstractCegarLoop]: Abstraction has 3426 states and 5166 transitions. [2022-11-20 10:54:36,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:36,264 INFO L276 IsEmpty]: Start isEmpty. Operand 3426 states and 5166 transitions. [2022-11-20 10:54:36,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-20 10:54:36,265 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:54:36,265 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:54:36,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 10:54:36,266 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:54:36,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:54:36,267 INFO L85 PathProgramCache]: Analyzing trace with hash -857928876, now seen corresponding path program 1 times [2022-11-20 10:54:36,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:54:36,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978822160] [2022-11-20 10:54:36,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:36,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:54:36,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:36,438 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 10:54:36,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:54:36,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978822160] [2022-11-20 10:54:36,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978822160] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:54:36,439 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:54:36,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:54:36,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841171119] [2022-11-20 10:54:36,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:54:36,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:54:36,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:54:36,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:54:36,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:54:36,441 INFO L87 Difference]: Start difference. First operand 3426 states and 5166 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:37,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:54:37,043 INFO L93 Difference]: Finished difference Result 5282 states and 7746 transitions. [2022-11-20 10:54:37,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:54:37,044 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2022-11-20 10:54:37,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:54:37,060 INFO L225 Difference]: With dead ends: 5282 [2022-11-20 10:54:37,060 INFO L226 Difference]: Without dead ends: 4708 [2022-11-20 10:54:37,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:54:37,064 INFO L413 NwaCegarLoop]: 1552 mSDtfsCounter, 3050 mSDsluCounter, 1618 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3050 SdHoareTripleChecker+Valid, 3170 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:54:37,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3050 Valid, 3170 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:54:37,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4708 states. [2022-11-20 10:54:37,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4708 to 4286. [2022-11-20 10:54:37,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4286 states, 4284 states have (on average 1.4794584500466854) internal successors, (6338), 4285 states have internal predecessors, (6338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:37,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4286 states to 4286 states and 6338 transitions. [2022-11-20 10:54:37,478 INFO L78 Accepts]: Start accepts. Automaton has 4286 states and 6338 transitions. Word has length 54 [2022-11-20 10:54:37,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:54:37,478 INFO L495 AbstractCegarLoop]: Abstraction has 4286 states and 6338 transitions. [2022-11-20 10:54:37,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:37,478 INFO L276 IsEmpty]: Start isEmpty. Operand 4286 states and 6338 transitions. [2022-11-20 10:54:37,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-20 10:54:37,479 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:54:37,480 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:54:37,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 10:54:37,480 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:54:37,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:54:37,481 INFO L85 PathProgramCache]: Analyzing trace with hash 894361900, now seen corresponding path program 1 times [2022-11-20 10:54:37,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:54:37,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117996512] [2022-11-20 10:54:37,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:37,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:54:37,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:37,590 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:54:37,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:54:37,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117996512] [2022-11-20 10:54:37,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117996512] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:54:37,591 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:54:37,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:54:37,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693239331] [2022-11-20 10:54:37,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:54:37,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:54:37,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:54:37,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:54:37,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:54:37,597 INFO L87 Difference]: Start difference. First operand 4286 states and 6338 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:37,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:54:37,827 INFO L93 Difference]: Finished difference Result 5762 states and 8401 transitions. [2022-11-20 10:54:37,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:54:37,828 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2022-11-20 10:54:37,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:54:37,854 INFO L225 Difference]: With dead ends: 5762 [2022-11-20 10:54:37,861 INFO L226 Difference]: Without dead ends: 3756 [2022-11-20 10:54:37,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:54:37,865 INFO L413 NwaCegarLoop]: 1535 mSDtfsCounter, 34 mSDsluCounter, 1496 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 3031 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:54:37,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 3031 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:54:37,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3756 states. [2022-11-20 10:54:38,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3756 to 3754. [2022-11-20 10:54:38,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3754 states, 3752 states have (on average 1.4952025586353945) internal successors, (5610), 3753 states have internal predecessors, (5610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:38,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3754 states to 3754 states and 5610 transitions. [2022-11-20 10:54:38,160 INFO L78 Accepts]: Start accepts. Automaton has 3754 states and 5610 transitions. Word has length 56 [2022-11-20 10:54:38,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:54:38,160 INFO L495 AbstractCegarLoop]: Abstraction has 3754 states and 5610 transitions. [2022-11-20 10:54:38,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:38,162 INFO L276 IsEmpty]: Start isEmpty. Operand 3754 states and 5610 transitions. [2022-11-20 10:54:38,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-20 10:54:38,162 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:54:38,163 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:54:38,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 10:54:38,163 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:54:38,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:54:38,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1218909775, now seen corresponding path program 1 times [2022-11-20 10:54:38,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:54:38,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346207626] [2022-11-20 10:54:38,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:38,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:54:38,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:38,260 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 10:54:38,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:54:38,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346207626] [2022-11-20 10:54:38,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346207626] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:54:38,261 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:54:38,261 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:54:38,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255826465] [2022-11-20 10:54:38,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:54:38,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:54:38,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:54:38,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:54:38,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:54:38,263 INFO L87 Difference]: Start difference. First operand 3754 states and 5610 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:38,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:54:38,725 INFO L93 Difference]: Finished difference Result 5010 states and 7366 transitions. [2022-11-20 10:54:38,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:54:38,725 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2022-11-20 10:54:38,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:54:38,735 INFO L225 Difference]: With dead ends: 5010 [2022-11-20 10:54:38,735 INFO L226 Difference]: Without dead ends: 4592 [2022-11-20 10:54:38,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:54:38,738 INFO L413 NwaCegarLoop]: 1549 mSDtfsCounter, 3050 mSDsluCounter, 1606 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3050 SdHoareTripleChecker+Valid, 3155 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:54:38,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3050 Valid, 3155 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:54:38,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4592 states. [2022-11-20 10:54:39,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4592 to 4170. [2022-11-20 10:54:39,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4170 states, 4168 states have (on average 1.484165067178503) internal successors, (6186), 4169 states have internal predecessors, (6186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:39,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4170 states to 4170 states and 6186 transitions. [2022-11-20 10:54:39,064 INFO L78 Accepts]: Start accepts. Automaton has 4170 states and 6186 transitions. Word has length 56 [2022-11-20 10:54:39,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:54:39,064 INFO L495 AbstractCegarLoop]: Abstraction has 4170 states and 6186 transitions. [2022-11-20 10:54:39,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:39,065 INFO L276 IsEmpty]: Start isEmpty. Operand 4170 states and 6186 transitions. [2022-11-20 10:54:39,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-20 10:54:39,065 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:54:39,066 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:54:39,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 10:54:39,066 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:54:39,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:54:39,066 INFO L85 PathProgramCache]: Analyzing trace with hash -877348108, now seen corresponding path program 1 times [2022-11-20 10:54:39,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:54:39,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120722917] [2022-11-20 10:54:39,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:39,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:54:39,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:39,149 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:54:39,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:54:39,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120722917] [2022-11-20 10:54:39,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120722917] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:54:39,150 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:54:39,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:54:39,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222411055] [2022-11-20 10:54:39,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:54:39,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:54:39,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:54:39,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:54:39,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:54:39,151 INFO L87 Difference]: Start difference. First operand 4170 states and 6186 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:39,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:54:39,322 INFO L93 Difference]: Finished difference Result 5110 states and 7484 transitions. [2022-11-20 10:54:39,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:54:39,323 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-11-20 10:54:39,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:54:39,330 INFO L225 Difference]: With dead ends: 5110 [2022-11-20 10:54:39,330 INFO L226 Difference]: Without dead ends: 3236 [2022-11-20 10:54:39,335 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:54:39,336 INFO L413 NwaCegarLoop]: 1528 mSDtfsCounter, 29 mSDsluCounter, 1488 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 3016 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:54:39,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 3016 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:54:39,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3236 states. [2022-11-20 10:54:39,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3236 to 3234. [2022-11-20 10:54:39,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3234 states, 3232 states have (on average 1.5074257425742574) internal successors, (4872), 3233 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:39,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3234 states to 3234 states and 4872 transitions. [2022-11-20 10:54:39,511 INFO L78 Accepts]: Start accepts. Automaton has 3234 states and 4872 transitions. Word has length 57 [2022-11-20 10:54:39,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:54:39,512 INFO L495 AbstractCegarLoop]: Abstraction has 3234 states and 4872 transitions. [2022-11-20 10:54:39,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:39,512 INFO L276 IsEmpty]: Start isEmpty. Operand 3234 states and 4872 transitions. [2022-11-20 10:54:39,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-20 10:54:39,513 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:54:39,513 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:54:39,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 10:54:39,513 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:54:39,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:54:39,514 INFO L85 PathProgramCache]: Analyzing trace with hash 1226511174, now seen corresponding path program 1 times [2022-11-20 10:54:39,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:54:39,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736877850] [2022-11-20 10:54:39,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:39,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:54:39,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:39,597 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:54:39,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:54:39,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736877850] [2022-11-20 10:54:39,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736877850] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:54:39,599 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:54:39,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:54:39,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522737180] [2022-11-20 10:54:39,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:54:39,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:54:39,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:54:39,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:54:39,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:54:39,601 INFO L87 Difference]: Start difference. First operand 3234 states and 4872 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:39,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:54:39,726 INFO L93 Difference]: Finished difference Result 3706 states and 5513 transitions. [2022-11-20 10:54:39,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:54:39,726 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2022-11-20 10:54:39,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:54:39,732 INFO L225 Difference]: With dead ends: 3706 [2022-11-20 10:54:39,732 INFO L226 Difference]: Without dead ends: 2768 [2022-11-20 10:54:39,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:54:39,735 INFO L413 NwaCegarLoop]: 1521 mSDtfsCounter, 26 mSDsluCounter, 1480 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 3001 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:54:39,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 3001 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:54:39,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2768 states. [2022-11-20 10:54:39,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2768 to 2766. [2022-11-20 10:54:39,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2766 states, 2764 states have (on average 1.52821997105644) internal successors, (4224), 2765 states have internal predecessors, (4224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:39,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2766 states to 2766 states and 4224 transitions. [2022-11-20 10:54:39,848 INFO L78 Accepts]: Start accepts. Automaton has 2766 states and 4224 transitions. Word has length 59 [2022-11-20 10:54:39,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:54:39,849 INFO L495 AbstractCegarLoop]: Abstraction has 2766 states and 4224 transitions. [2022-11-20 10:54:39,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:39,849 INFO L276 IsEmpty]: Start isEmpty. Operand 2766 states and 4224 transitions. [2022-11-20 10:54:39,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-20 10:54:39,855 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:54:39,856 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:54:39,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-20 10:54:39,856 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:54:39,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:54:39,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1826022888, now seen corresponding path program 1 times [2022-11-20 10:54:39,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:54:39,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295970841] [2022-11-20 10:54:39,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:39,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:54:39,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:41,925 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:54:41,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:54:41,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295970841] [2022-11-20 10:54:41,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295970841] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:54:41,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062945728] [2022-11-20 10:54:41,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:41,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:54:41,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6078a21c-5797-423d-a147-291a8742be4b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:54:41,929 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6078a21c-5797-423d-a147-291a8742be4b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:54:41,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6078a21c-5797-423d-a147-291a8742be4b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 10:54:42,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:42,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-20 10:54:42,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:54:42,449 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 10:54:42,450 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:54:42,670 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 10:54:42,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1062945728] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:54:42,670 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:54:42,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6, 4] total 19 [2022-11-20 10:54:42,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916132625] [2022-11-20 10:54:42,671 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:54:42,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 10:54:42,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:54:42,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 10:54:42,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2022-11-20 10:54:42,673 INFO L87 Difference]: Start difference. First operand 2766 states and 4224 transitions. Second operand has 19 states, 19 states have (on average 8.736842105263158) internal successors, (166), 19 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:49,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:54:49,851 INFO L93 Difference]: Finished difference Result 5594 states and 7896 transitions. [2022-11-20 10:54:49,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-11-20 10:54:49,852 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 8.736842105263158) internal successors, (166), 19 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-11-20 10:54:49,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:54:49,861 INFO L225 Difference]: With dead ends: 5594 [2022-11-20 10:54:49,861 INFO L226 Difference]: Without dead ends: 5124 [2022-11-20 10:54:49,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1404 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=852, Invalid=3704, Unknown=0, NotChecked=0, Total=4556 [2022-11-20 10:54:49,866 INFO L413 NwaCegarLoop]: 1503 mSDtfsCounter, 17674 mSDsluCounter, 6289 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17674 SdHoareTripleChecker+Valid, 7792 SdHoareTripleChecker+Invalid, 650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:54:49,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17674 Valid, 7792 Invalid, 650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 590 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-20 10:54:49,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5124 states. [2022-11-20 10:54:50,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5124 to 4427. [2022-11-20 10:54:50,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4427 states, 4425 states have (on average 1.416949152542373) internal successors, (6270), 4426 states have internal predecessors, (6270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:50,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4427 states to 4427 states and 6270 transitions. [2022-11-20 10:54:50,361 INFO L78 Accepts]: Start accepts. Automaton has 4427 states and 6270 transitions. Word has length 61 [2022-11-20 10:54:50,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:54:50,362 INFO L495 AbstractCegarLoop]: Abstraction has 4427 states and 6270 transitions. [2022-11-20 10:54:50,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 8.736842105263158) internal successors, (166), 19 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:50,362 INFO L276 IsEmpty]: Start isEmpty. Operand 4427 states and 6270 transitions. [2022-11-20 10:54:50,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-20 10:54:50,363 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:54:50,363 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:54:50,370 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6078a21c-5797-423d-a147-291a8742be4b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-20 10:54:50,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6078a21c-5797-423d-a147-291a8742be4b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-20 10:54:50,565 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:54:50,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:54:50,565 INFO L85 PathProgramCache]: Analyzing trace with hash 168764099, now seen corresponding path program 1 times [2022-11-20 10:54:50,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:54:50,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519444309] [2022-11-20 10:54:50,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:50,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:54:50,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:51,043 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:54:51,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:54:51,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519444309] [2022-11-20 10:54:51,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519444309] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:54:51,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1873672635] [2022-11-20 10:54:51,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:54:51,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:54:51,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6078a21c-5797-423d-a147-291a8742be4b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:54:51,045 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6078a21c-5797-423d-a147-291a8742be4b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:54:51,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6078a21c-5797-423d-a147-291a8742be4b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 10:54:51,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:54:51,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-20 10:54:51,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:54:52,181 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:54:52,182 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:54:53,475 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:54:53,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1873672635] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:54:53,476 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:54:53,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 30 [2022-11-20 10:54:53,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188470742] [2022-11-20 10:54:53,477 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:54:53,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-20 10:54:53,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:54:53,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-20 10:54:53,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=753, Unknown=0, NotChecked=0, Total=870 [2022-11-20 10:54:53,479 INFO L87 Difference]: Start difference. First operand 4427 states and 6270 transitions. Second operand has 30 states, 30 states have (on average 5.533333333333333) internal successors, (166), 30 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:54:59,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:54:59,095 INFO L93 Difference]: Finished difference Result 9966 states and 13105 transitions. [2022-11-20 10:54:59,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-20 10:54:59,096 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.533333333333333) internal successors, (166), 30 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-11-20 10:54:59,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:54:59,113 INFO L225 Difference]: With dead ends: 9966 [2022-11-20 10:54:59,113 INFO L226 Difference]: Without dead ends: 7989 [2022-11-20 10:54:59,118 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 103 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 874 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=773, Invalid=3259, Unknown=0, NotChecked=0, Total=4032 [2022-11-20 10:54:59,119 INFO L413 NwaCegarLoop]: 1502 mSDtfsCounter, 19069 mSDsluCounter, 10918 mSDsCounter, 0 mSdLazyCounter, 810 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19069 SdHoareTripleChecker+Valid, 12420 SdHoareTripleChecker+Invalid, 862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 810 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-20 10:54:59,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19069 Valid, 12420 Invalid, 862 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 810 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-20 10:54:59,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7989 states. [2022-11-20 10:54:59,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7989 to 6031. [2022-11-20 10:55:00,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6031 states, 6029 states have (on average 1.3635760490960358) internal successors, (8221), 6030 states have internal predecessors, (8221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:00,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6031 states to 6031 states and 8221 transitions. [2022-11-20 10:55:00,015 INFO L78 Accepts]: Start accepts. Automaton has 6031 states and 8221 transitions. Word has length 62 [2022-11-20 10:55:00,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:55:00,015 INFO L495 AbstractCegarLoop]: Abstraction has 6031 states and 8221 transitions. [2022-11-20 10:55:00,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 5.533333333333333) internal successors, (166), 30 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:00,016 INFO L276 IsEmpty]: Start isEmpty. Operand 6031 states and 8221 transitions. [2022-11-20 10:55:00,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-20 10:55:00,016 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:55:00,017 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:55:00,023 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6078a21c-5797-423d-a147-291a8742be4b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 10:55:00,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6078a21c-5797-423d-a147-291a8742be4b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-20 10:55:00,223 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:55:00,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:55:00,223 INFO L85 PathProgramCache]: Analyzing trace with hash 225757237, now seen corresponding path program 1 times [2022-11-20 10:55:00,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:55:00,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068929190] [2022-11-20 10:55:00,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:55:00,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:55:00,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:00,686 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:55:00,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:55:00,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068929190] [2022-11-20 10:55:00,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068929190] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:55:00,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1710273560] [2022-11-20 10:55:00,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:55:00,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:55:00,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6078a21c-5797-423d-a147-291a8742be4b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:55:00,688 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6078a21c-5797-423d-a147-291a8742be4b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:55:00,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6078a21c-5797-423d-a147-291a8742be4b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 10:55:00,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:00,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-20 10:55:00,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:55:04,811 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:55:04,811 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:55:11,549 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:55:11,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1710273560] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:55:11,549 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:55:11,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 17, 19] total 43 [2022-11-20 10:55:11,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219292287] [2022-11-20 10:55:11,550 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:55:11,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-11-20 10:55:11,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:55:11,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-11-20 10:55:11,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=292, Invalid=1514, Unknown=0, NotChecked=0, Total=1806 [2022-11-20 10:55:11,552 INFO L87 Difference]: Start difference. First operand 6031 states and 8221 transitions. Second operand has 43 states, 43 states have (on average 3.86046511627907) internal successors, (166), 43 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:44,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:55:44,063 INFO L93 Difference]: Finished difference Result 11814 states and 15199 transitions. [2022-11-20 10:55:44,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2022-11-20 10:55:44,063 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 3.86046511627907) internal successors, (166), 43 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-11-20 10:55:44,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:55:44,077 INFO L225 Difference]: With dead ends: 11814 [2022-11-20 10:55:44,077 INFO L226 Difference]: Without dead ends: 8237 [2022-11-20 10:55:44,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 89 SyntacticMatches, 2 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9523 ImplicationChecksByTransitivity, 31.9s TimeCoverageRelationStatistics Valid=4613, Invalid=21147, Unknown=0, NotChecked=0, Total=25760 [2022-11-20 10:55:44,087 INFO L413 NwaCegarLoop]: 1565 mSDtfsCounter, 18638 mSDsluCounter, 17721 mSDsCounter, 0 mSdLazyCounter, 1374 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18638 SdHoareTripleChecker+Valid, 19286 SdHoareTripleChecker+Invalid, 1524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 1374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:55:44,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18638 Valid, 19286 Invalid, 1524 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [150 Valid, 1374 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-20 10:55:44,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8237 states. [2022-11-20 10:55:45,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8237 to 5412. [2022-11-20 10:55:45,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5412 states, 5410 states have (on average 1.3746765249537893) internal successors, (7437), 5411 states have internal predecessors, (7437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:45,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5412 states to 5412 states and 7437 transitions. [2022-11-20 10:55:45,028 INFO L78 Accepts]: Start accepts. Automaton has 5412 states and 7437 transitions. Word has length 62 [2022-11-20 10:55:45,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:55:45,029 INFO L495 AbstractCegarLoop]: Abstraction has 5412 states and 7437 transitions. [2022-11-20 10:55:45,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 3.86046511627907) internal successors, (166), 43 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:55:45,029 INFO L276 IsEmpty]: Start isEmpty. Operand 5412 states and 7437 transitions. [2022-11-20 10:55:45,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-20 10:55:45,030 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:55:45,030 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:55:45,040 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6078a21c-5797-423d-a147-291a8742be4b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 10:55:45,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6078a21c-5797-423d-a147-291a8742be4b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:55:45,236 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:55:45,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:55:45,236 INFO L85 PathProgramCache]: Analyzing trace with hash 936502703, now seen corresponding path program 1 times [2022-11-20 10:55:45,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:55:45,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52722588] [2022-11-20 10:55:45,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:55:45,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:55:45,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:47,052 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:55:47,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:55:47,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52722588] [2022-11-20 10:55:47,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52722588] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:55:47,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1328361891] [2022-11-20 10:55:47,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:55:47,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:55:47,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6078a21c-5797-423d-a147-291a8742be4b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:55:47,055 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6078a21c-5797-423d-a147-291a8742be4b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:55:47,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6078a21c-5797-423d-a147-291a8742be4b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 10:55:47,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:55:47,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-20 10:55:47,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:55:48,354 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:55:48,354 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:55:49,934 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:55:49,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1328361891] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:55:49,934 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:55:49,934 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 13, 13] total 43 [2022-11-20 10:55:49,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922014316] [2022-11-20 10:55:49,936 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:55:49,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-11-20 10:55:49,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:55:49,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-11-20 10:55:49,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=1659, Unknown=0, NotChecked=0, Total=1806 [2022-11-20 10:55:49,941 INFO L87 Difference]: Start difference. First operand 5412 states and 7437 transitions. Second operand has 43 states, 43 states have (on average 3.883720930232558) internal successors, (167), 43 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:04,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:56:04,222 INFO L93 Difference]: Finished difference Result 12781 states and 16573 transitions. [2022-11-20 10:56:04,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-11-20 10:56:04,222 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 3.883720930232558) internal successors, (167), 43 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-11-20 10:56:04,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:56:04,236 INFO L225 Difference]: With dead ends: 12781 [2022-11-20 10:56:04,236 INFO L226 Difference]: Without dead ends: 11349 [2022-11-20 10:56:04,242 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2719 ImplicationChecksByTransitivity, 11.8s TimeCoverageRelationStatistics Valid=1903, Invalid=8399, Unknown=0, NotChecked=0, Total=10302 [2022-11-20 10:56:04,243 INFO L413 NwaCegarLoop]: 1526 mSDtfsCounter, 19953 mSDsluCounter, 30566 mSDsCounter, 0 mSdLazyCounter, 1590 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19953 SdHoareTripleChecker+Valid, 32092 SdHoareTripleChecker+Invalid, 1676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-20 10:56:04,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19953 Valid, 32092 Invalid, 1676 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [86 Valid, 1590 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-20 10:56:04,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11349 states. [2022-11-20 10:56:05,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11349 to 5301. [2022-11-20 10:56:05,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5301 states, 5299 states have (on average 1.3783732779769768) internal successors, (7304), 5300 states have internal predecessors, (7304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:05,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5301 states to 5301 states and 7304 transitions. [2022-11-20 10:56:05,243 INFO L78 Accepts]: Start accepts. Automaton has 5301 states and 7304 transitions. Word has length 64 [2022-11-20 10:56:05,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:56:05,243 INFO L495 AbstractCegarLoop]: Abstraction has 5301 states and 7304 transitions. [2022-11-20 10:56:05,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 3.883720930232558) internal successors, (167), 43 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:56:05,244 INFO L276 IsEmpty]: Start isEmpty. Operand 5301 states and 7304 transitions. [2022-11-20 10:56:05,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-20 10:56:05,245 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:56:05,245 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:56:05,254 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6078a21c-5797-423d-a147-291a8742be4b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 10:56:05,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6078a21c-5797-423d-a147-291a8742be4b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:56:05,451 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:56:05,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:56:05,452 INFO L85 PathProgramCache]: Analyzing trace with hash 272942991, now seen corresponding path program 1 times [2022-11-20 10:56:05,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:56:05,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370839023] [2022-11-20 10:56:05,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:05,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:56:05,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:06,546 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 16 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:56:06,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:56:06,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370839023] [2022-11-20 10:56:06,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370839023] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:56:06,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2025481211] [2022-11-20 10:56:06,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:06,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:56:06,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6078a21c-5797-423d-a147-291a8742be4b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:56:06,548 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6078a21c-5797-423d-a147-291a8742be4b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:56:06,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6078a21c-5797-423d-a147-291a8742be4b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 10:56:06,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:06,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-20 10:56:06,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:56:09,492 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 24 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:56:09,492 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:56:30,281 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 24 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:56:30,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2025481211] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:56:30,282 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:56:30,282 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 22, 22] total 57 [2022-11-20 10:56:30,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143476999] [2022-11-20 10:56:30,283 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:56:30,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-11-20 10:56:30,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:56:30,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-11-20 10:56:30,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=284, Invalid=2908, Unknown=0, NotChecked=0, Total=3192 [2022-11-20 10:56:30,285 INFO L87 Difference]: Start difference. First operand 5301 states and 7304 transitions. Second operand has 57 states, 57 states have (on average 5.0701754385964914) internal successors, (289), 57 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:58:38,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:58:38,259 INFO L93 Difference]: Finished difference Result 19374 states and 24724 transitions. [2022-11-20 10:58:38,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 262 states. [2022-11-20 10:58:38,260 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 5.0701754385964914) internal successors, (289), 57 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2022-11-20 10:58:38,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:58:38,276 INFO L225 Difference]: With dead ends: 19374 [2022-11-20 10:58:38,276 INFO L226 Difference]: Without dead ends: 17468 [2022-11-20 10:58:38,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 481 GetRequests, 156 SyntacticMatches, 10 SemanticMatches, 315 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35824 ImplicationChecksByTransitivity, 117.2s TimeCoverageRelationStatistics Valid=11577, Invalid=88595, Unknown=0, NotChecked=0, Total=100172 [2022-11-20 10:58:38,293 INFO L413 NwaCegarLoop]: 1604 mSDtfsCounter, 31938 mSDsluCounter, 24705 mSDsCounter, 0 mSdLazyCounter, 3725 mSolverCounterSat, 349 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31938 SdHoareTripleChecker+Valid, 26309 SdHoareTripleChecker+Invalid, 4074 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 349 IncrementalHoareTripleChecker+Valid, 3725 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-11-20 10:58:38,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31938 Valid, 26309 Invalid, 4074 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [349 Valid, 3725 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2022-11-20 10:58:38,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17468 states. [2022-11-20 10:58:41,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17468 to 9243. [2022-11-20 10:58:41,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9243 states, 9241 states have (on average 1.310356022075533) internal successors, (12109), 9242 states have internal predecessors, (12109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:58:41,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9243 states to 9243 states and 12109 transitions. [2022-11-20 10:58:41,529 INFO L78 Accepts]: Start accepts. Automaton has 9243 states and 12109 transitions. Word has length 103 [2022-11-20 10:58:41,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:58:41,529 INFO L495 AbstractCegarLoop]: Abstraction has 9243 states and 12109 transitions. [2022-11-20 10:58:41,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 5.0701754385964914) internal successors, (289), 57 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:58:41,529 INFO L276 IsEmpty]: Start isEmpty. Operand 9243 states and 12109 transitions. [2022-11-20 10:58:41,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-11-20 10:58:41,532 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:58:41,532 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:58:41,538 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6078a21c-5797-423d-a147-291a8742be4b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-20 10:58:41,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6078a21c-5797-423d-a147-291a8742be4b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-11-20 10:58:41,733 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:58:41,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:58:41,733 INFO L85 PathProgramCache]: Analyzing trace with hash -897532676, now seen corresponding path program 1 times [2022-11-20 10:58:41,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:58:41,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821248843] [2022-11-20 10:58:41,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:58:41,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:58:41,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:58:43,572 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 16 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:58:43,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:58:43,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821248843] [2022-11-20 10:58:43,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821248843] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:58:43,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1098544196] [2022-11-20 10:58:43,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:58:43,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:58:43,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6078a21c-5797-423d-a147-291a8742be4b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:58:43,574 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6078a21c-5797-423d-a147-291a8742be4b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:58:43,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6078a21c-5797-423d-a147-291a8742be4b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 10:58:43,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:58:43,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 39 conjunts are in the unsatisfiable core [2022-11-20 10:58:43,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:58:47,367 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 57 proven. 6 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-20 10:58:47,368 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:59:10,514 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 70 proven. 8 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-20 10:59:10,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1098544196] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:59:10,514 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:59:10,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 19, 25] total 63 [2022-11-20 10:59:10,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99602086] [2022-11-20 10:59:10,515 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:59:10,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-11-20 10:59:10,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:59:10,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-11-20 10:59:10,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=329, Invalid=3577, Unknown=0, NotChecked=0, Total=3906 [2022-11-20 10:59:10,517 INFO L87 Difference]: Start difference. First operand 9243 states and 12109 transitions. Second operand has 63 states, 63 states have (on average 4.301587301587301) internal successors, (271), 63 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:01:20,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:01:20,081 INFO L93 Difference]: Finished difference Result 26516 states and 32815 transitions. [2022-11-20 11:01:20,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 323 states. [2022-11-20 11:01:20,086 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 4.301587301587301) internal successors, (271), 63 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2022-11-20 11:01:20,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:01:20,109 INFO L225 Difference]: With dead ends: 26516 [2022-11-20 11:01:20,109 INFO L226 Difference]: Without dead ends: 21279 [2022-11-20 11:01:20,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 550 GetRequests, 166 SyntacticMatches, 2 SemanticMatches, 382 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59623 ImplicationChecksByTransitivity, 114.8s TimeCoverageRelationStatistics Valid=17035, Invalid=130037, Unknown=0, NotChecked=0, Total=147072 [2022-11-20 11:01:20,125 INFO L413 NwaCegarLoop]: 1687 mSDtfsCounter, 22786 mSDsluCounter, 43202 mSDsCounter, 0 mSdLazyCounter, 6067 mSolverCounterSat, 308 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22786 SdHoareTripleChecker+Valid, 44889 SdHoareTripleChecker+Invalid, 6375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 308 IncrementalHoareTripleChecker+Valid, 6067 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2022-11-20 11:01:20,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22786 Valid, 44889 Invalid, 6375 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [308 Valid, 6067 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2022-11-20 11:01:20,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21279 states. [2022-11-20 11:01:24,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21279 to 10637. [2022-11-20 11:01:24,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10637 states, 10635 states have (on average 1.2982604607428303) internal successors, (13807), 10636 states have internal predecessors, (13807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:01:24,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10637 states to 10637 states and 13807 transitions. [2022-11-20 11:01:24,957 INFO L78 Accepts]: Start accepts. Automaton has 10637 states and 13807 transitions. Word has length 104 [2022-11-20 11:01:24,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:01:24,958 INFO L495 AbstractCegarLoop]: Abstraction has 10637 states and 13807 transitions. [2022-11-20 11:01:24,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 4.301587301587301) internal successors, (271), 63 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:01:24,958 INFO L276 IsEmpty]: Start isEmpty. Operand 10637 states and 13807 transitions. [2022-11-20 11:01:24,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-11-20 11:01:24,960 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:01:24,960 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:01:24,966 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6078a21c-5797-423d-a147-291a8742be4b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-20 11:01:25,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6078a21c-5797-423d-a147-291a8742be4b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-11-20 11:01:25,161 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:01:25,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:01:25,161 INFO L85 PathProgramCache]: Analyzing trace with hash -2047223651, now seen corresponding path program 1 times [2022-11-20 11:01:25,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:01:25,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833206071] [2022-11-20 11:01:25,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:01:25,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:01:25,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:27,550 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 16 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:01:27,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:01:27,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833206071] [2022-11-20 11:01:27,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833206071] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:01:27,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2054201417] [2022-11-20 11:01:27,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:01:27,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:01:27,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6078a21c-5797-423d-a147-291a8742be4b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:01:27,552 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6078a21c-5797-423d-a147-291a8742be4b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:01:27,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6078a21c-5797-423d-a147-291a8742be4b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 11:01:27,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:01:27,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-20 11:01:27,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:01:29,338 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 20 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:01:29,338 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:01:32,752 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 17 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:01:32,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2054201417] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:01:32,752 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:01:32,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 15, 15] total 52 [2022-11-20 11:01:32,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649925354] [2022-11-20 11:01:32,753 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:01:32,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-11-20 11:01:32,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:01:32,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-11-20 11:01:32,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=2458, Unknown=0, NotChecked=0, Total=2652 [2022-11-20 11:01:32,755 INFO L87 Difference]: Start difference. First operand 10637 states and 13807 transitions. Second operand has 52 states, 52 states have (on average 5.596153846153846) internal successors, (291), 52 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:49,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:02:49,644 INFO L93 Difference]: Finished difference Result 30256 states and 37062 transitions. [2022-11-20 11:02:49,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 182 states. [2022-11-20 11:02:49,645 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 5.596153846153846) internal successors, (291), 52 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2022-11-20 11:02:49,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:02:49,676 INFO L225 Difference]: With dead ends: 30256 [2022-11-20 11:02:49,676 INFO L226 Difference]: Without dead ends: 27123 [2022-11-20 11:02:49,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 229 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18966 ImplicationChecksByTransitivity, 56.8s TimeCoverageRelationStatistics Valid=7474, Invalid=45656, Unknown=0, NotChecked=0, Total=53130 [2022-11-20 11:02:49,684 INFO L413 NwaCegarLoop]: 1554 mSDtfsCounter, 22037 mSDsluCounter, 36979 mSDsCounter, 0 mSdLazyCounter, 3299 mSolverCounterSat, 299 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22037 SdHoareTripleChecker+Valid, 38533 SdHoareTripleChecker+Invalid, 3598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 299 IncrementalHoareTripleChecker+Valid, 3299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-20 11:02:49,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22037 Valid, 38533 Invalid, 3598 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [299 Valid, 3299 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-20 11:02:49,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27123 states. [2022-11-20 11:02:58,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27123 to 14632. [2022-11-20 11:02:58,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14632 states, 14630 states have (on average 1.278673957621326) internal successors, (18707), 14631 states have internal predecessors, (18707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:58,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14632 states to 14632 states and 18707 transitions. [2022-11-20 11:02:58,038 INFO L78 Accepts]: Start accepts. Automaton has 14632 states and 18707 transitions. Word has length 105 [2022-11-20 11:02:58,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:02:58,038 INFO L495 AbstractCegarLoop]: Abstraction has 14632 states and 18707 transitions. [2022-11-20 11:02:58,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 5.596153846153846) internal successors, (291), 52 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:02:58,039 INFO L276 IsEmpty]: Start isEmpty. Operand 14632 states and 18707 transitions. [2022-11-20 11:02:58,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-11-20 11:02:58,041 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:02:58,041 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:02:58,050 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6078a21c-5797-423d-a147-291a8742be4b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-20 11:02:58,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6078a21c-5797-423d-a147-291a8742be4b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-11-20 11:02:58,248 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:02:58,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:02:58,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1395528875, now seen corresponding path program 1 times [2022-11-20 11:02:58,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:02:58,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104691821] [2022-11-20 11:02:58,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:02:58,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:02:58,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:59,810 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 35 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:02:59,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:02:59,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104691821] [2022-11-20 11:02:59,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104691821] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:02:59,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370113577] [2022-11-20 11:02:59,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:02:59,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:02:59,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6078a21c-5797-423d-a147-291a8742be4b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:02:59,812 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6078a21c-5797-423d-a147-291a8742be4b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:02:59,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6078a21c-5797-423d-a147-291a8742be4b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 11:02:59,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:59,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 45 conjunts are in the unsatisfiable core [2022-11-20 11:02:59,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:03:03,466 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 35 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:03:03,466 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:03:12,615 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 33 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:03:12,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [370113577] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:03:12,616 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:03:12,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 64 [2022-11-20 11:03:12,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238528299] [2022-11-20 11:03:12,616 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:03:12,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-11-20 11:03:12,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:03:12,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-11-20 11:03:12,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=444, Invalid=3588, Unknown=0, NotChecked=0, Total=4032 [2022-11-20 11:03:12,618 INFO L87 Difference]: Start difference. First operand 14632 states and 18707 transitions. Second operand has 64 states, 64 states have (on average 4.453125) internal successors, (285), 64 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)