./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label04.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a 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_69dcac3a-a8d4-4f64-91c1-8a140ae38c4f/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69dcac3a-a8d4-4f64-91c1-8a140ae38c4f/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69dcac3a-a8d4-4f64-91c1-8a140ae38c4f/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69dcac3a-a8d4-4f64-91c1-8a140ae38c4f/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label04.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69dcac3a-a8d4-4f64-91c1-8a140ae38c4f/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69dcac3a-a8d4-4f64-91c1-8a140ae38c4f/bin/uautomizer-ZsLfNo2U6R --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 12e64e5880a6492945a65c8a75846fcd1e471751df63fa7462470a498bbbc9fb --- 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-38b53e6 [2022-11-25 18:00:04,525 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 18:00:04,534 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 18:00:04,576 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 18:00:04,577 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 18:00:04,584 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 18:00:04,594 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 18:00:04,596 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 18:00:04,606 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 18:00:04,607 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 18:00:04,608 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 18:00:04,609 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 18:00:04,609 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 18:00:04,610 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 18:00:04,612 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 18:00:04,613 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 18:00:04,614 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 18:00:04,618 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 18:00:04,620 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 18:00:04,622 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 18:00:04,624 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 18:00:04,626 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 18:00:04,627 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 18:00:04,628 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 18:00:04,632 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 18:00:04,633 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 18:00:04,633 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 18:00:04,634 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 18:00:04,635 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 18:00:04,636 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 18:00:04,636 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 18:00:04,637 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 18:00:04,638 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 18:00:04,639 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 18:00:04,640 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 18:00:04,640 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 18:00:04,641 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 18:00:04,642 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 18:00:04,642 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 18:00:04,643 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 18:00:04,644 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 18:00:04,645 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69dcac3a-a8d4-4f64-91c1-8a140ae38c4f/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-25 18:00:04,667 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 18:00:04,668 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 18:00:04,668 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 18:00:04,668 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 18:00:04,669 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 18:00:04,669 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 18:00:04,670 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 18:00:04,670 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 18:00:04,670 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 18:00:04,671 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 18:00:04,671 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 18:00:04,671 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 18:00:04,671 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 18:00:04,672 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 18:00:04,672 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 18:00:04,672 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 18:00:04,672 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 18:00:04,673 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 18:00:04,673 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 18:00:04,673 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 18:00:04,673 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 18:00:04,674 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 18:00:04,674 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 18:00:04,674 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 18:00:04,674 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:00:04,675 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 18:00:04,675 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 18:00:04,675 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 18:00:04,675 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 18:00:04,676 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 18:00:04,676 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 18:00:04,676 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 18:00:04,676 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 18:00:04,676 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 18:00:04,677 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_69dcac3a-a8d4-4f64-91c1-8a140ae38c4f/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69dcac3a-a8d4-4f64-91c1-8a140ae38c4f/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 12e64e5880a6492945a65c8a75846fcd1e471751df63fa7462470a498bbbc9fb [2022-11-25 18:00:04,938 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 18:00:04,961 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 18:00:04,965 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 18:00:04,966 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 18:00:04,967 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 18:00:04,968 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69dcac3a-a8d4-4f64-91c1-8a140ae38c4f/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label04.c [2022-11-25 18:00:08,120 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 18:00:08,790 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 18:00:08,791 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69dcac3a-a8d4-4f64-91c1-8a140ae38c4f/sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label04.c [2022-11-25 18:00:08,835 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69dcac3a-a8d4-4f64-91c1-8a140ae38c4f/bin/uautomizer-ZsLfNo2U6R/data/468b8c691/789e4eefcbfd4bf9bd84c73afd7acf21/FLAG26f4206e5 [2022-11-25 18:00:08,859 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69dcac3a-a8d4-4f64-91c1-8a140ae38c4f/bin/uautomizer-ZsLfNo2U6R/data/468b8c691/789e4eefcbfd4bf9bd84c73afd7acf21 [2022-11-25 18:00:08,862 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 18:00:08,866 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 18:00:08,870 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 18:00:08,871 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 18:00:08,875 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 18:00:08,876 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:00:08" (1/1) ... [2022-11-25 18:00:08,877 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46b8c6d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:00:08, skipping insertion in model container [2022-11-25 18:00:08,878 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:00:08" (1/1) ... [2022-11-25 18:00:08,886 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 18:00:09,058 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 18:00:09,558 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_69dcac3a-a8d4-4f64-91c1-8a140ae38c4f/sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label04.c[6487,6500] [2022-11-25 18:00:09,650 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_69dcac3a-a8d4-4f64-91c1-8a140ae38c4f/sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label04.c[13548,13561] [2022-11-25 18:00:10,913 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:00:10,927 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 18:00:10,976 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_69dcac3a-a8d4-4f64-91c1-8a140ae38c4f/sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label04.c[6487,6500] [2022-11-25 18:00:10,994 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_69dcac3a-a8d4-4f64-91c1-8a140ae38c4f/sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label04.c[13548,13561] [2022-11-25 18:00:11,663 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:00:11,692 INFO L208 MainTranslator]: Completed translation [2022-11-25 18:00:11,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:00:11 WrapperNode [2022-11-25 18:00:11,693 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 18:00:11,694 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 18:00:11,694 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 18:00:11,694 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 18:00:11,703 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:00:11" (1/1) ... [2022-11-25 18:00:11,769 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:00:11" (1/1) ... [2022-11-25 18:00:12,194 INFO L138 Inliner]: procedures = 35, calls = 20, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 4965 [2022-11-25 18:00:12,194 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 18:00:12,196 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 18:00:12,196 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 18:00:12,196 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 18:00:12,207 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:00:11" (1/1) ... [2022-11-25 18:00:12,208 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:00:11" (1/1) ... [2022-11-25 18:00:12,244 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:00:11" (1/1) ... [2022-11-25 18:00:12,246 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:00:11" (1/1) ... [2022-11-25 18:00:12,539 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:00:11" (1/1) ... [2022-11-25 18:00:12,608 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:00:11" (1/1) ... [2022-11-25 18:00:12,705 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:00:11" (1/1) ... [2022-11-25 18:00:12,730 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:00:11" (1/1) ... [2022-11-25 18:00:12,910 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 18:00:12,924 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 18:00:12,924 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 18:00:12,926 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 18:00:12,927 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:00:11" (1/1) ... [2022-11-25 18:00:12,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:00:12,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69dcac3a-a8d4-4f64-91c1-8a140ae38c4f/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:00:12,981 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69dcac3a-a8d4-4f64-91c1-8a140ae38c4f/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 18:00:13,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69dcac3a-a8d4-4f64-91c1-8a140ae38c4f/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 18:00:13,101 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 18:00:13,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 18:00:13,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 18:00:13,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 18:00:13,248 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 18:00:13,251 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 18:00:19,121 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 18:00:19,149 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 18:00:19,150 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-25 18:00:19,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:00:19 BoogieIcfgContainer [2022-11-25 18:00:19,154 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 18:00:19,158 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 18:00:19,158 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 18:00:19,161 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 18:00:19,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:00:08" (1/3) ... [2022-11-25 18:00:19,164 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@691b8cce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:00:19, skipping insertion in model container [2022-11-25 18:00:19,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:00:11" (2/3) ... [2022-11-25 18:00:19,165 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@691b8cce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:00:19, skipping insertion in model container [2022-11-25 18:00:19,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:00:19" (3/3) ... [2022-11-25 18:00:19,168 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label04.c [2022-11-25 18:00:19,190 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 18:00:19,191 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-25 18:00:19,297 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 18:00:19,308 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;@677dc0b8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 18:00:19,308 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-25 18:00:19,320 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) [2022-11-25 18:00:19,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-25 18:00:19,333 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:00:19,334 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] [2022-11-25 18:00:19,335 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:00:19,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:00:19,344 INFO L85 PathProgramCache]: Analyzing trace with hash -934405548, now seen corresponding path program 1 times [2022-11-25 18:00:19,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:00:19,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276859814] [2022-11-25 18:00:19,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:00:19,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:00:19,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:19,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:00:19,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:00:19,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276859814] [2022-11-25 18:00:19,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276859814] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:00:19,659 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:00:19,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:00:19,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914128967] [2022-11-25 18:00:19,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:00:19,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 18:00:19,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:00:19,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 18:00:19,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 18:00:19,725 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) [2022-11-25 18:00:19,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:00:19,861 INFO L93 Difference]: Finished difference Result 1724 states and 3278 transitions. [2022-11-25 18:00:19,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:00:19,864 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 [2022-11-25 18:00:19,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:00:19,887 INFO L225 Difference]: With dead ends: 1724 [2022-11-25 18:00:19,888 INFO L226 Difference]: Without dead ends: 808 [2022-11-25 18:00:19,895 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 [2022-11-25 18:00:19,899 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 [2022-11-25 18:00:19,900 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] [2022-11-25 18:00:19,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2022-11-25 18:00:19,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 808. [2022-11-25 18:00:19,991 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) [2022-11-25 18:00:19,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 1527 transitions. [2022-11-25 18:00:19,996 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 1527 transitions. Word has length 20 [2022-11-25 18:00:19,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:00:19,997 INFO L495 AbstractCegarLoop]: Abstraction has 808 states and 1527 transitions. [2022-11-25 18:00:19,997 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) [2022-11-25 18:00:19,998 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 1527 transitions. [2022-11-25 18:00:19,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-25 18:00:19,999 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:00:19,999 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] [2022-11-25 18:00:19,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 18:00:20,000 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:00:20,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:00:20,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1945522798, now seen corresponding path program 1 times [2022-11-25 18:00:20,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:00:20,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684757909] [2022-11-25 18:00:20,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:00:20,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:00:20,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:20,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:00:20,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:00:20,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684757909] [2022-11-25 18:00:20,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684757909] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:00:20,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:00:20,188 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 18:00:20,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697695574] [2022-11-25 18:00:20,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:00:20,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 18:00:20,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:00:20,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 18:00:20,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 18:00:20,191 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) [2022-11-25 18:00:20,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:00:20,321 INFO L93 Difference]: Finished difference Result 844 states and 1581 transitions. [2022-11-25 18:00:20,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 18:00:20,322 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 [2022-11-25 18:00:20,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:00:20,327 INFO L225 Difference]: With dead ends: 844 [2022-11-25 18:00:20,327 INFO L226 Difference]: Without dead ends: 808 [2022-11-25 18:00:20,328 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 [2022-11-25 18:00:20,330 INFO L413 NwaCegarLoop]: 1525 mSDtfsCounter, 3 mSDsluCounter, 4556 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 18:00:20,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6081 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 18:00:20,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2022-11-25 18:00:20,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 808. [2022-11-25 18:00:20,466 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) [2022-11-25 18:00:20,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 1511 transitions. [2022-11-25 18:00:20,469 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 1511 transitions. Word has length 20 [2022-11-25 18:00:20,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:00:20,470 INFO L495 AbstractCegarLoop]: Abstraction has 808 states and 1511 transitions. [2022-11-25 18:00:20,470 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) [2022-11-25 18:00:20,470 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 1511 transitions. [2022-11-25 18:00:20,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-25 18:00:20,472 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:00:20,472 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] [2022-11-25 18:00:20,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 18:00:20,473 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:00:20,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:00:20,473 INFO L85 PathProgramCache]: Analyzing trace with hash 1226597962, now seen corresponding path program 1 times [2022-11-25 18:00:20,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:00:20,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258098009] [2022-11-25 18:00:20,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:00:20,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:00:20,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:20,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:00:20,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:00:20,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258098009] [2022-11-25 18:00:20,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258098009] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:00:20,607 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:00:20,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 18:00:20,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285082533] [2022-11-25 18:00:20,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:00:20,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 18:00:20,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:00:20,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 18:00:20,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 18:00:20,610 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) [2022-11-25 18:00:20,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:00:20,784 INFO L93 Difference]: Finished difference Result 1000 states and 1811 transitions. [2022-11-25 18:00:20,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 18:00:20,784 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 [2022-11-25 18:00:20,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:00:20,790 INFO L225 Difference]: With dead ends: 1000 [2022-11-25 18:00:20,790 INFO L226 Difference]: Without dead ends: 968 [2022-11-25 18:00:20,791 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 [2022-11-25 18:00:20,792 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 [2022-11-25 18:00:20,793 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] [2022-11-25 18:00:20,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2022-11-25 18:00:20,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 838. [2022-11-25 18:00:20,819 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) [2022-11-25 18:00:20,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 838 states to 838 states and 1558 transitions. [2022-11-25 18:00:20,823 INFO L78 Accepts]: Start accepts. Automaton has 838 states and 1558 transitions. Word has length 35 [2022-11-25 18:00:20,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:00:20,824 INFO L495 AbstractCegarLoop]: Abstraction has 838 states and 1558 transitions. [2022-11-25 18:00:20,824 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) [2022-11-25 18:00:20,824 INFO L276 IsEmpty]: Start isEmpty. Operand 838 states and 1558 transitions. [2022-11-25 18:00:20,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-25 18:00:20,826 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:00:20,826 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] [2022-11-25 18:00:20,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 18:00:20,827 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:00:20,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:00:20,827 INFO L85 PathProgramCache]: Analyzing trace with hash 523901274, now seen corresponding path program 1 times [2022-11-25 18:00:20,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:00:20,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117543143] [2022-11-25 18:00:20,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:00:20,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:00:20,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:20,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:00:20,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:00:20,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117543143] [2022-11-25 18:00:20,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117543143] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:00:20,920 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:00:20,920 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:00:20,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191894039] [2022-11-25 18:00:20,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:00:20,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:00:20,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:00:20,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:00:20,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:00:20,923 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) [2022-11-25 18:00:20,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:00:20,975 INFO L93 Difference]: Finished difference Result 951 states and 1733 transitions. [2022-11-25 18:00:20,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:00:20,976 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 [2022-11-25 18:00:20,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:00:20,981 INFO L225 Difference]: With dead ends: 951 [2022-11-25 18:00:20,981 INFO L226 Difference]: Without dead ends: 889 [2022-11-25 18:00:20,982 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 [2022-11-25 18:00:20,983 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 [2022-11-25 18:00:20,984 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] [2022-11-25 18:00:20,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2022-11-25 18:00:21,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 885. [2022-11-25 18:00:21,013 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) [2022-11-25 18:00:21,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1628 transitions. [2022-11-25 18:00:21,017 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1628 transitions. Word has length 37 [2022-11-25 18:00:21,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:00:21,017 INFO L495 AbstractCegarLoop]: Abstraction has 885 states and 1628 transitions. [2022-11-25 18:00:21,018 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) [2022-11-25 18:00:21,018 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1628 transitions. [2022-11-25 18:00:21,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-25 18:00:21,019 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:00:21,020 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] [2022-11-25 18:00:21,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 18:00:21,020 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:00:21,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:00:21,021 INFO L85 PathProgramCache]: Analyzing trace with hash 590394786, now seen corresponding path program 1 times [2022-11-25 18:00:21,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:00:21,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715503486] [2022-11-25 18:00:21,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:00:21,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:00:21,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:21,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:00:21,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:00:21,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715503486] [2022-11-25 18:00:21,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715503486] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:00:21,228 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:00:21,228 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 18:00:21,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378910855] [2022-11-25 18:00:21,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:00:21,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 18:00:21,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:00:21,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 18:00:21,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 18:00:21,231 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) [2022-11-25 18:00:21,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:00:21,349 INFO L93 Difference]: Finished difference Result 996 states and 1796 transitions. [2022-11-25 18:00:21,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 18:00:21,350 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 [2022-11-25 18:00:21,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:00:21,354 INFO L225 Difference]: With dead ends: 996 [2022-11-25 18:00:21,355 INFO L226 Difference]: Without dead ends: 887 [2022-11-25 18:00:21,356 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 [2022-11-25 18:00:21,357 INFO L413 NwaCegarLoop]: 1506 mSDtfsCounter, 2952 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2952 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 [2022-11-25 18:00:21,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2952 Valid, 1598 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 18:00:21,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 887 states. [2022-11-25 18:00:21,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 887 to 885. [2022-11-25 18:00:21,386 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) [2022-11-25 18:00:21,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1626 transitions. [2022-11-25 18:00:21,391 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1626 transitions. Word has length 37 [2022-11-25 18:00:21,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:00:21,391 INFO L495 AbstractCegarLoop]: Abstraction has 885 states and 1626 transitions. [2022-11-25 18:00:21,392 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) [2022-11-25 18:00:21,392 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1626 transitions. [2022-11-25 18:00:21,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-25 18:00:21,393 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:00:21,393 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] [2022-11-25 18:00:21,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 18:00:21,394 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:00:21,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:00:21,395 INFO L85 PathProgramCache]: Analyzing trace with hash 707645968, now seen corresponding path program 1 times [2022-11-25 18:00:21,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:00:21,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195049309] [2022-11-25 18:00:21,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:00:21,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:00:21,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:21,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:00:21,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:00:21,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195049309] [2022-11-25 18:00:21,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195049309] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:00:21,729 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:00:21,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-25 18:00:21,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733679286] [2022-11-25 18:00:21,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:00:21,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 18:00:21,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:00:21,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 18:00:21,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-25 18:00:21,731 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) [2022-11-25 18:00:21,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:00:21,960 INFO L93 Difference]: Finished difference Result 990 states and 1780 transitions. [2022-11-25 18:00:21,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 18:00:21,961 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 [2022-11-25 18:00:21,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:00:21,966 INFO L225 Difference]: With dead ends: 990 [2022-11-25 18:00:21,967 INFO L226 Difference]: Without dead ends: 988 [2022-11-25 18:00:21,968 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 [2022-11-25 18:00:21,969 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, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 18:00:21,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [295 Valid, 10442 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 18:00:21,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 988 states. [2022-11-25 18:00:22,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 988 to 891. [2022-11-25 18:00:22,002 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) [2022-11-25 18:00:22,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 1631 transitions. [2022-11-25 18:00:22,006 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 1631 transitions. Word has length 38 [2022-11-25 18:00:22,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:00:22,007 INFO L495 AbstractCegarLoop]: Abstraction has 891 states and 1631 transitions. [2022-11-25 18:00:22,007 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) [2022-11-25 18:00:22,007 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 1631 transitions. [2022-11-25 18:00:22,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-25 18:00:22,009 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:00:22,009 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] [2022-11-25 18:00:22,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 18:00:22,009 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:00:22,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:00:22,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1903217474, now seen corresponding path program 1 times [2022-11-25 18:00:22,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:00:22,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917591299] [2022-11-25 18:00:22,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:00:22,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:00:22,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:22,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:00:22,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:00:22,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917591299] [2022-11-25 18:00:22,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917591299] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:00:22,057 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:00:22,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:00:22,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439161322] [2022-11-25 18:00:22,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:00:22,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:00:22,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:00:22,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:00:22,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:00:22,059 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) [2022-11-25 18:00:22,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:00:22,194 INFO L93 Difference]: Finished difference Result 1105 states and 1943 transitions. [2022-11-25 18:00:22,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:00:22,195 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 [2022-11-25 18:00:22,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:00:22,200 INFO L225 Difference]: With dead ends: 1105 [2022-11-25 18:00:22,201 INFO L226 Difference]: Without dead ends: 990 [2022-11-25 18:00:22,202 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 [2022-11-25 18:00:22,203 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 [2022-11-25 18:00:22,204 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] [2022-11-25 18:00:22,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 990 states. [2022-11-25 18:00:22,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 990 to 988. [2022-11-25 18:00:22,262 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) [2022-11-25 18:00:22,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 988 states to 988 states and 1768 transitions. [2022-11-25 18:00:22,267 INFO L78 Accepts]: Start accepts. Automaton has 988 states and 1768 transitions. Word has length 39 [2022-11-25 18:00:22,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:00:22,269 INFO L495 AbstractCegarLoop]: Abstraction has 988 states and 1768 transitions. [2022-11-25 18:00:22,269 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) [2022-11-25 18:00:22,270 INFO L276 IsEmpty]: Start isEmpty. Operand 988 states and 1768 transitions. [2022-11-25 18:00:22,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-25 18:00:22,271 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:00:22,272 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] [2022-11-25 18:00:22,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 18:00:22,273 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:00:22,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:00:22,273 INFO L85 PathProgramCache]: Analyzing trace with hash 122284610, now seen corresponding path program 1 times [2022-11-25 18:00:22,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:00:22,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367337468] [2022-11-25 18:00:22,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:00:22,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:00:22,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:22,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:00:22,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:00:22,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367337468] [2022-11-25 18:00:22,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367337468] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:00:22,358 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:00:22,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:00:22,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19838906] [2022-11-25 18:00:22,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:00:22,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:00:22,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:00:22,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:00:22,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:00:22,362 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) [2022-11-25 18:00:22,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:00:22,464 INFO L93 Difference]: Finished difference Result 1380 states and 2326 transitions. [2022-11-25 18:00:22,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:00:22,465 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 [2022-11-25 18:00:22,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:00:22,471 INFO L225 Difference]: With dead ends: 1380 [2022-11-25 18:00:22,471 INFO L226 Difference]: Without dead ends: 1168 [2022-11-25 18:00:22,472 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 [2022-11-25 18:00:22,474 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 [2022-11-25 18:00:22,478 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] [2022-11-25 18:00:22,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1168 states. [2022-11-25 18:00:22,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1168 to 1166. [2022-11-25 18:00:22,577 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) [2022-11-25 18:00:22,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1166 states to 1166 states and 2010 transitions. [2022-11-25 18:00:22,584 INFO L78 Accepts]: Start accepts. Automaton has 1166 states and 2010 transitions. Word has length 39 [2022-11-25 18:00:22,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:00:22,584 INFO L495 AbstractCegarLoop]: Abstraction has 1166 states and 2010 transitions. [2022-11-25 18:00:22,585 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) [2022-11-25 18:00:22,586 INFO L276 IsEmpty]: Start isEmpty. Operand 1166 states and 2010 transitions. [2022-11-25 18:00:22,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-25 18:00:22,595 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:00:22,596 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] [2022-11-25 18:00:22,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 18:00:22,596 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:00:22,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:00:22,597 INFO L85 PathProgramCache]: Analyzing trace with hash -1688735299, now seen corresponding path program 1 times [2022-11-25 18:00:22,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:00:22,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812006730] [2022-11-25 18:00:22,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:00:22,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:00:22,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:22,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:00:22,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:00:22,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812006730] [2022-11-25 18:00:22,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812006730] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:00:22,661 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:00:22,661 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:00:22,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916380848] [2022-11-25 18:00:22,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:00:22,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:00:22,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:00:22,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:00:22,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:00:22,663 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) [2022-11-25 18:00:22,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:00:22,806 INFO L93 Difference]: Finished difference Result 1589 states and 2616 transitions. [2022-11-25 18:00:22,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:00:22,807 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 [2022-11-25 18:00:22,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:00:22,814 INFO L225 Difference]: With dead ends: 1589 [2022-11-25 18:00:22,814 INFO L226 Difference]: Without dead ends: 1354 [2022-11-25 18:00:22,816 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 [2022-11-25 18:00:22,816 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 [2022-11-25 18:00:22,817 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] [2022-11-25 18:00:22,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1354 states. [2022-11-25 18:00:22,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1354 to 1352. [2022-11-25 18:00:22,952 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) [2022-11-25 18:00:22,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 2264 transitions. [2022-11-25 18:00:22,960 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 2264 transitions. Word has length 41 [2022-11-25 18:00:22,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:00:22,960 INFO L495 AbstractCegarLoop]: Abstraction has 1352 states and 2264 transitions. [2022-11-25 18:00:22,960 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) [2022-11-25 18:00:22,961 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 2264 transitions. [2022-11-25 18:00:22,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-25 18:00:22,962 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:00:22,962 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] [2022-11-25 18:00:22,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 18:00:22,963 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:00:22,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:00:22,963 INFO L85 PathProgramCache]: Analyzing trace with hash 923003988, now seen corresponding path program 1 times [2022-11-25 18:00:22,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:00:22,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143940720] [2022-11-25 18:00:22,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:00:22,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:00:22,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:23,102 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 18:00:23,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:00:23,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143940720] [2022-11-25 18:00:23,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143940720] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:00:23,103 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:00:23,103 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 18:00:23,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479824275] [2022-11-25 18:00:23,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:00:23,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 18:00:23,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:00:23,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 18:00:23,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-25 18:00:23,105 INFO L87 Difference]: Start difference. First operand 1352 states and 2264 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) [2022-11-25 18:00:23,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:00:23,578 INFO L93 Difference]: Finished difference Result 3208 states and 4844 transitions. [2022-11-25 18:00:23,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 18:00:23,578 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 [2022-11-25 18:00:23,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:00:23,589 INFO L225 Difference]: With dead ends: 3208 [2022-11-25 18:00:23,589 INFO L226 Difference]: Without dead ends: 2634 [2022-11-25 18:00:23,591 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 [2022-11-25 18:00:23,592 INFO L413 NwaCegarLoop]: 1551 mSDtfsCounter, 3057 mSDsluCounter, 1604 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3057 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, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 18:00:23,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3057 Valid, 3155 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 18:00:23,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2634 states. [2022-11-25 18:00:23,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2634 to 1924. [2022-11-25 18:00:23,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1924 states, 1922 states have (on average 1.5879292403746097) internal successors, (3052), 1923 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:00:23,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1924 states to 1924 states and 3052 transitions. [2022-11-25 18:00:23,786 INFO L78 Accepts]: Start accepts. Automaton has 1924 states and 3052 transitions. Word has length 54 [2022-11-25 18:00:23,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:00:23,787 INFO L495 AbstractCegarLoop]: Abstraction has 1924 states and 3052 transitions. [2022-11-25 18:00:23,788 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) [2022-11-25 18:00:23,788 INFO L276 IsEmpty]: Start isEmpty. Operand 1924 states and 3052 transitions. [2022-11-25 18:00:23,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-25 18:00:23,789 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:00:23,789 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] [2022-11-25 18:00:23,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-25 18:00:23,789 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:00:23,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:00:23,790 INFO L85 PathProgramCache]: Analyzing trace with hash -857928876, now seen corresponding path program 1 times [2022-11-25 18:00:23,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:00:23,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818522142] [2022-11-25 18:00:23,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:00:23,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:00:23,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:23,924 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-25 18:00:23,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:00:23,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818522142] [2022-11-25 18:00:23,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818522142] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:00:23,925 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:00:23,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 18:00:23,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246134675] [2022-11-25 18:00:23,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:00:23,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 18:00:23,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:00:23,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 18:00:23,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-25 18:00:23,927 INFO L87 Difference]: Start difference. First operand 1924 states and 3052 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) [2022-11-25 18:00:24,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:00:24,370 INFO L93 Difference]: Finished difference Result 3780 states and 5632 transitions. [2022-11-25 18:00:24,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 18:00:24,371 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 [2022-11-25 18:00:24,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:00:24,384 INFO L225 Difference]: With dead ends: 3780 [2022-11-25 18:00:24,385 INFO L226 Difference]: Without dead ends: 3206 [2022-11-25 18:00:24,387 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 [2022-11-25 18:00:24,388 INFO L413 NwaCegarLoop]: 1552 mSDtfsCounter, 3049 mSDsluCounter, 1618 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3049 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 [2022-11-25 18:00:24,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3049 Valid, 3170 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 18:00:24,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3206 states. [2022-11-25 18:00:24,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3206 to 2784. [2022-11-25 18:00:24,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2784 states, 2782 states have (on average 1.518332135154565) internal successors, (4224), 2783 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) [2022-11-25 18:00:24,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2784 states to 2784 states and 4224 transitions. [2022-11-25 18:00:24,797 INFO L78 Accepts]: Start accepts. Automaton has 2784 states and 4224 transitions. Word has length 54 [2022-11-25 18:00:24,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:00:24,797 INFO L495 AbstractCegarLoop]: Abstraction has 2784 states and 4224 transitions. [2022-11-25 18:00:24,798 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) [2022-11-25 18:00:24,798 INFO L276 IsEmpty]: Start isEmpty. Operand 2784 states and 4224 transitions. [2022-11-25 18:00:24,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-25 18:00:24,799 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:00:24,799 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] [2022-11-25 18:00:24,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-25 18:00:24,800 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:00:24,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:00:24,800 INFO L85 PathProgramCache]: Analyzing trace with hash 894361900, now seen corresponding path program 1 times [2022-11-25 18:00:24,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:00:24,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730623809] [2022-11-25 18:00:24,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:00:24,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:00:24,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:24,892 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:00:24,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:00:24,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730623809] [2022-11-25 18:00:24,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730623809] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:00:24,893 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:00:24,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:00:24,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735251610] [2022-11-25 18:00:24,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:00:24,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:00:24,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:00:24,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:00:24,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:00:24,895 INFO L87 Difference]: Start difference. First operand 2784 states and 4224 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) [2022-11-25 18:00:25,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:00:25,137 INFO L93 Difference]: Finished difference Result 4260 states and 6287 transitions. [2022-11-25 18:00:25,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:00:25,137 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 [2022-11-25 18:00:25,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:00:25,146 INFO L225 Difference]: With dead ends: 4260 [2022-11-25 18:00:25,146 INFO L226 Difference]: Without dead ends: 2254 [2022-11-25 18:00:25,149 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 [2022-11-25 18:00:25,150 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 [2022-11-25 18:00:25,150 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] [2022-11-25 18:00:25,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2254 states. [2022-11-25 18:00:25,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2254 to 2252. [2022-11-25 18:00:25,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2252 states, 2250 states have (on average 1.5537777777777777) internal successors, (3496), 2251 states have internal predecessors, (3496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:00:25,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2252 states to 2252 states and 3496 transitions. [2022-11-25 18:00:25,390 INFO L78 Accepts]: Start accepts. Automaton has 2252 states and 3496 transitions. Word has length 56 [2022-11-25 18:00:25,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:00:25,391 INFO L495 AbstractCegarLoop]: Abstraction has 2252 states and 3496 transitions. [2022-11-25 18:00:25,391 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) [2022-11-25 18:00:25,391 INFO L276 IsEmpty]: Start isEmpty. Operand 2252 states and 3496 transitions. [2022-11-25 18:00:25,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-25 18:00:25,392 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:00:25,392 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] [2022-11-25 18:00:25,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-25 18:00:25,393 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:00:25,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:00:25,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1218909775, now seen corresponding path program 1 times [2022-11-25 18:00:25,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:00:25,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861679789] [2022-11-25 18:00:25,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:00:25,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:00:25,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:25,533 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 18:00:25,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:00:25,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861679789] [2022-11-25 18:00:25,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861679789] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:00:25,534 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:00:25,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 18:00:25,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967139650] [2022-11-25 18:00:25,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:00:25,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 18:00:25,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:00:25,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 18:00:25,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-25 18:00:25,537 INFO L87 Difference]: Start difference. First operand 2252 states and 3496 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) [2022-11-25 18:00:26,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:00:26,011 INFO L93 Difference]: Finished difference Result 3508 states and 5252 transitions. [2022-11-25 18:00:26,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 18:00:26,013 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 [2022-11-25 18:00:26,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:00:26,025 INFO L225 Difference]: With dead ends: 3508 [2022-11-25 18:00:26,025 INFO L226 Difference]: Without dead ends: 3090 [2022-11-25 18:00:26,027 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 [2022-11-25 18:00:26,028 INFO L413 NwaCegarLoop]: 1549 mSDtfsCounter, 3051 mSDsluCounter, 1598 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3051 SdHoareTripleChecker+Valid, 3147 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 18:00:26,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3051 Valid, 3147 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 18:00:26,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3090 states. [2022-11-25 18:00:26,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3090 to 2668. [2022-11-25 18:00:26,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2668 states, 2666 states have (on average 1.5273818454613652) internal successors, (4072), 2667 states have internal predecessors, (4072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:00:26,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2668 states to 2668 states and 4072 transitions. [2022-11-25 18:00:26,333 INFO L78 Accepts]: Start accepts. Automaton has 2668 states and 4072 transitions. Word has length 56 [2022-11-25 18:00:26,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:00:26,333 INFO L495 AbstractCegarLoop]: Abstraction has 2668 states and 4072 transitions. [2022-11-25 18:00:26,333 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) [2022-11-25 18:00:26,334 INFO L276 IsEmpty]: Start isEmpty. Operand 2668 states and 4072 transitions. [2022-11-25 18:00:26,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-25 18:00:26,335 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:00:26,335 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] [2022-11-25 18:00:26,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-25 18:00:26,335 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:00:26,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:00:26,336 INFO L85 PathProgramCache]: Analyzing trace with hash -877348108, now seen corresponding path program 1 times [2022-11-25 18:00:26,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:00:26,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274731518] [2022-11-25 18:00:26,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:00:26,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:00:26,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:26,433 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:00:26,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:00:26,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274731518] [2022-11-25 18:00:26,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274731518] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:00:26,434 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:00:26,435 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:00:26,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948393047] [2022-11-25 18:00:26,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:00:26,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:00:26,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:00:26,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:00:26,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:00:26,437 INFO L87 Difference]: Start difference. First operand 2668 states and 4072 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) [2022-11-25 18:00:26,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:00:26,600 INFO L93 Difference]: Finished difference Result 3608 states and 5370 transitions. [2022-11-25 18:00:26,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:00:26,601 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 [2022-11-25 18:00:26,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:00:26,608 INFO L225 Difference]: With dead ends: 3608 [2022-11-25 18:00:26,608 INFO L226 Difference]: Without dead ends: 1734 [2022-11-25 18:00:26,611 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 [2022-11-25 18:00:26,612 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 [2022-11-25 18:00:26,613 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] [2022-11-25 18:00:26,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1734 states. [2022-11-25 18:00:26,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1734 to 1732. [2022-11-25 18:00:26,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1732 states, 1730 states have (on average 1.5942196531791908) internal successors, (2758), 1731 states have internal predecessors, (2758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:00:26,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1732 states to 1732 states and 2758 transitions. [2022-11-25 18:00:26,776 INFO L78 Accepts]: Start accepts. Automaton has 1732 states and 2758 transitions. Word has length 57 [2022-11-25 18:00:26,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:00:26,776 INFO L495 AbstractCegarLoop]: Abstraction has 1732 states and 2758 transitions. [2022-11-25 18:00:26,776 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) [2022-11-25 18:00:26,776 INFO L276 IsEmpty]: Start isEmpty. Operand 1732 states and 2758 transitions. [2022-11-25 18:00:26,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-25 18:00:26,777 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:00:26,779 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] [2022-11-25 18:00:26,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-25 18:00:26,779 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:00:26,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:00:26,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1226511174, now seen corresponding path program 1 times [2022-11-25 18:00:26,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:00:26,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062301095] [2022-11-25 18:00:26,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:00:26,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:00:26,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:26,870 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:00:26,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:00:26,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062301095] [2022-11-25 18:00:26,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062301095] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:00:26,871 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:00:26,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:00:26,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313193845] [2022-11-25 18:00:26,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:00:26,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:00:26,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:00:26,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:00:26,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:00:26,873 INFO L87 Difference]: Start difference. First operand 1732 states and 2758 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) [2022-11-25 18:00:27,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:00:27,055 INFO L93 Difference]: Finished difference Result 2204 states and 3399 transitions. [2022-11-25 18:00:27,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:00:27,056 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 [2022-11-25 18:00:27,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:00:27,061 INFO L225 Difference]: With dead ends: 2204 [2022-11-25 18:00:27,062 INFO L226 Difference]: Without dead ends: 1266 [2022-11-25 18:00:27,063 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 [2022-11-25 18:00:27,064 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 [2022-11-25 18:00:27,065 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] [2022-11-25 18:00:27,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1266 states. [2022-11-25 18:00:27,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1266 to 1264. [2022-11-25 18:00:27,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1264 states, 1262 states have (on average 1.6719492868462758) internal successors, (2110), 1263 states have internal predecessors, (2110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:00:27,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1264 states to 1264 states and 2110 transitions. [2022-11-25 18:00:27,195 INFO L78 Accepts]: Start accepts. Automaton has 1264 states and 2110 transitions. Word has length 59 [2022-11-25 18:00:27,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:00:27,195 INFO L495 AbstractCegarLoop]: Abstraction has 1264 states and 2110 transitions. [2022-11-25 18:00:27,196 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) [2022-11-25 18:00:27,196 INFO L276 IsEmpty]: Start isEmpty. Operand 1264 states and 2110 transitions. [2022-11-25 18:00:27,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-25 18:00:27,197 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:00:27,197 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] [2022-11-25 18:00:27,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-25 18:00:27,198 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:00:27,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:00:27,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1826022888, now seen corresponding path program 1 times [2022-11-25 18:00:27,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:00:27,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546969255] [2022-11-25 18:00:27,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:00:27,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:00:27,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:29,774 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:00:29,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:00:29,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546969255] [2022-11-25 18:00:29,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546969255] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:00:29,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [108804821] [2022-11-25 18:00:29,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:00:29,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:00:29,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69dcac3a-a8d4-4f64-91c1-8a140ae38c4f/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:00:29,783 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69dcac3a-a8d4-4f64-91c1-8a140ae38c4f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:00:29,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69dcac3a-a8d4-4f64-91c1-8a140ae38c4f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 18:00:29,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:29,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-25 18:00:29,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:00:30,375 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 18:00:30,375 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:00:30,631 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 18:00:30,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [108804821] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:00:30,632 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 18:00:30,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6, 4] total 19 [2022-11-25 18:00:30,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212940663] [2022-11-25 18:00:30,632 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 18:00:30,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-25 18:00:30,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:00:30,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-25 18:00:30,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2022-11-25 18:00:30,635 INFO L87 Difference]: Start difference. First operand 1264 states and 2110 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) [2022-11-25 18:00:38,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:00:38,642 INFO L93 Difference]: Finished difference Result 4092 states and 5782 transitions. [2022-11-25 18:00:38,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-11-25 18:00:38,643 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 [2022-11-25 18:00:38,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:00:38,664 INFO L225 Difference]: With dead ends: 4092 [2022-11-25 18:00:38,665 INFO L226 Difference]: Without dead ends: 3622 [2022-11-25 18:00:38,668 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1404 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=852, Invalid=3704, Unknown=0, NotChecked=0, Total=4556 [2022-11-25 18:00:38,668 INFO L413 NwaCegarLoop]: 1503 mSDtfsCounter, 14210 mSDsluCounter, 6262 mSDsCounter, 0 mSdLazyCounter, 555 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14210 SdHoareTripleChecker+Valid, 7765 SdHoareTripleChecker+Invalid, 609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-25 18:00:38,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14210 Valid, 7765 Invalid, 609 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [54 Valid, 555 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-25 18:00:38,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3622 states. [2022-11-25 18:00:39,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3622 to 2925. [2022-11-25 18:00:39,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2925 states, 2923 states have (on average 1.4218268901813205) internal successors, (4156), 2924 states have internal predecessors, (4156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:00:39,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2925 states to 2925 states and 4156 transitions. [2022-11-25 18:00:39,150 INFO L78 Accepts]: Start accepts. Automaton has 2925 states and 4156 transitions. Word has length 61 [2022-11-25 18:00:39,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:00:39,150 INFO L495 AbstractCegarLoop]: Abstraction has 2925 states and 4156 transitions. [2022-11-25 18:00:39,151 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) [2022-11-25 18:00:39,151 INFO L276 IsEmpty]: Start isEmpty. Operand 2925 states and 4156 transitions. [2022-11-25 18:00:39,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-25 18:00:39,152 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:00:39,152 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:00:39,166 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69dcac3a-a8d4-4f64-91c1-8a140ae38c4f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 18:00:39,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69dcac3a-a8d4-4f64-91c1-8a140ae38c4f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-25 18:00:39,358 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:00:39,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:00:39,359 INFO L85 PathProgramCache]: Analyzing trace with hash -651882757, now seen corresponding path program 1 times [2022-11-25 18:00:39,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:00:39,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303867589] [2022-11-25 18:00:39,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:00:39,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:00:39,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:39,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:00:39,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:00:39,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303867589] [2022-11-25 18:00:39,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303867589] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:00:39,465 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:00:39,465 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:00:39,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649440528] [2022-11-25 18:00:39,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:00:39,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:00:39,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:00:39,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:00:39,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:00:39,468 INFO L87 Difference]: Start difference. First operand 2925 states and 4156 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 2 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:00:44,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:00:44,843 INFO L93 Difference]: Finished difference Result 4429 states and 7029 transitions. [2022-11-25 18:00:44,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:00:44,844 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 2 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-11-25 18:00:44,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:00:44,852 INFO L225 Difference]: With dead ends: 4429 [2022-11-25 18:00:44,852 INFO L226 Difference]: Without dead ends: 3676 [2022-11-25 18:00:44,854 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:00:44,855 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 826 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2277 mSolverCounterSat, 998 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 3275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 998 IncrementalHoareTripleChecker+Valid, 2277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-11-25 18:00:44,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [826 Valid, 149 Invalid, 3275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [998 Valid, 2277 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-11-25 18:00:44,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3676 states. [2022-11-25 18:00:45,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3676 to 3676. [2022-11-25 18:00:45,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3676 states, 3674 states have (on average 1.5054436581382689) internal successors, (5531), 3675 states have internal predecessors, (5531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:00:45,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3676 states to 3676 states and 5531 transitions. [2022-11-25 18:00:45,267 INFO L78 Accepts]: Start accepts. Automaton has 3676 states and 5531 transitions. Word has length 61 [2022-11-25 18:00:45,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:00:45,268 INFO L495 AbstractCegarLoop]: Abstraction has 3676 states and 5531 transitions. [2022-11-25 18:00:45,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 2 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:00:45,269 INFO L276 IsEmpty]: Start isEmpty. Operand 3676 states and 5531 transitions. [2022-11-25 18:00:45,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-25 18:00:45,270 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:00:45,270 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] [2022-11-25 18:00:45,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-25 18:00:45,271 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:00:45,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:00:45,271 INFO L85 PathProgramCache]: Analyzing trace with hash 168764099, now seen corresponding path program 1 times [2022-11-25 18:00:45,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:00:45,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251654738] [2022-11-25 18:00:45,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:00:45,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:00:45,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:45,854 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:00:45,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:00:45,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251654738] [2022-11-25 18:00:45,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251654738] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:00:45,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [442463241] [2022-11-25 18:00:45,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:00:45,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:00:45,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69dcac3a-a8d4-4f64-91c1-8a140ae38c4f/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:00:45,857 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69dcac3a-a8d4-4f64-91c1-8a140ae38c4f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:00:45,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69dcac3a-a8d4-4f64-91c1-8a140ae38c4f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 18:00:46,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:46,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-25 18:00:46,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:00:47,314 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:00:47,315 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:00:48,792 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:00:48,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [442463241] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:00:48,793 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 18:00:48,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 30 [2022-11-25 18:00:48,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076980195] [2022-11-25 18:00:48,794 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 18:00:48,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-25 18:00:48,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:00:48,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-25 18:00:48,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=753, Unknown=0, NotChecked=0, Total=870 [2022-11-25 18:00:48,796 INFO L87 Difference]: Start difference. First operand 3676 states and 5531 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) [2022-11-25 18:00:55,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:00:55,014 INFO L93 Difference]: Finished difference Result 9215 states and 12366 transitions. [2022-11-25 18:00:55,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-25 18:00:55,015 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 [2022-11-25 18:00:55,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:00:55,033 INFO L225 Difference]: With dead ends: 9215 [2022-11-25 18:00:55,033 INFO L226 Difference]: Without dead ends: 7238 [2022-11-25 18:00:55,039 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 103 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 874 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=773, Invalid=3259, Unknown=0, NotChecked=0, Total=4032 [2022-11-25 18:00:55,040 INFO L413 NwaCegarLoop]: 1502 mSDtfsCounter, 23253 mSDsluCounter, 9425 mSDsCounter, 0 mSdLazyCounter, 751 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23253 SdHoareTripleChecker+Valid, 10927 SdHoareTripleChecker+Invalid, 798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-25 18:00:55,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23253 Valid, 10927 Invalid, 798 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [47 Valid, 751 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-25 18:00:55,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7238 states. [2022-11-25 18:00:56,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7238 to 5280. [2022-11-25 18:00:56,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5280 states, 5278 states have (on average 1.4175824175824177) internal successors, (7482), 5279 states have internal predecessors, (7482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:00:56,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5280 states to 5280 states and 7482 transitions. [2022-11-25 18:00:56,030 INFO L78 Accepts]: Start accepts. Automaton has 5280 states and 7482 transitions. Word has length 62 [2022-11-25 18:00:56,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:00:56,031 INFO L495 AbstractCegarLoop]: Abstraction has 5280 states and 7482 transitions. [2022-11-25 18:00:56,031 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) [2022-11-25 18:00:56,031 INFO L276 IsEmpty]: Start isEmpty. Operand 5280 states and 7482 transitions. [2022-11-25 18:00:56,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-25 18:00:56,032 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:00:56,033 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] [2022-11-25 18:00:56,044 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69dcac3a-a8d4-4f64-91c1-8a140ae38c4f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 18:00:56,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69dcac3a-a8d4-4f64-91c1-8a140ae38c4f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-25 18:00:56,239 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:00:56,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:00:56,240 INFO L85 PathProgramCache]: Analyzing trace with hash 225757237, now seen corresponding path program 1 times [2022-11-25 18:00:56,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:00:56,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193031355] [2022-11-25 18:00:56,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:00:56,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:00:56,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:56,715 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:00:56,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:00:56,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193031355] [2022-11-25 18:00:56,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193031355] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:00:56,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1204000603] [2022-11-25 18:00:56,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:00:56,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:00:56,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69dcac3a-a8d4-4f64-91c1-8a140ae38c4f/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:00:56,719 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69dcac3a-a8d4-4f64-91c1-8a140ae38c4f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:00:56,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69dcac3a-a8d4-4f64-91c1-8a140ae38c4f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 18:00:56,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:00:56,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-25 18:00:56,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:01:01,602 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:01:01,602 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:01:09,585 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:01:09,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1204000603] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:01:09,585 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 18:01:09,586 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 17, 19] total 43 [2022-11-25 18:01:09,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642347349] [2022-11-25 18:01:09,586 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 18:01:09,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-11-25 18:01:09,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:01:09,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-11-25 18:01:09,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=292, Invalid=1514, Unknown=0, NotChecked=0, Total=1806 [2022-11-25 18:01:09,589 INFO L87 Difference]: Start difference. First operand 5280 states and 7482 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) [2022-11-25 18:01:46,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:01:46,485 INFO L93 Difference]: Finished difference Result 11063 states and 14460 transitions. [2022-11-25 18:01:46,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2022-11-25 18:01:46,486 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 [2022-11-25 18:01:46,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:01:46,503 INFO L225 Difference]: With dead ends: 11063 [2022-11-25 18:01:46,504 INFO L226 Difference]: Without dead ends: 7486 [2022-11-25 18:01:46,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 89 SyntacticMatches, 2 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9523 ImplicationChecksByTransitivity, 36.6s TimeCoverageRelationStatistics Valid=4613, Invalid=21147, Unknown=0, NotChecked=0, Total=25760 [2022-11-25 18:01:46,516 INFO L413 NwaCegarLoop]: 1565 mSDtfsCounter, 15782 mSDsluCounter, 16267 mSDsCounter, 0 mSdLazyCounter, 1356 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15782 SdHoareTripleChecker+Valid, 17832 SdHoareTripleChecker+Invalid, 1481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 1356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-25 18:01:46,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15782 Valid, 17832 Invalid, 1481 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [125 Valid, 1356 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-25 18:01:46,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7486 states. [2022-11-25 18:01:47,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7486 to 4661. [2022-11-25 18:01:47,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4661 states, 4659 states have (on average 1.4376475638549044) internal successors, (6698), 4660 states have internal predecessors, (6698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:01:47,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4661 states to 4661 states and 6698 transitions. [2022-11-25 18:01:47,510 INFO L78 Accepts]: Start accepts. Automaton has 4661 states and 6698 transitions. Word has length 62 [2022-11-25 18:01:47,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:01:47,511 INFO L495 AbstractCegarLoop]: Abstraction has 4661 states and 6698 transitions. [2022-11-25 18:01:47,511 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) [2022-11-25 18:01:47,512 INFO L276 IsEmpty]: Start isEmpty. Operand 4661 states and 6698 transitions. [2022-11-25 18:01:47,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-25 18:01:47,512 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:01:47,513 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, 1, 1, 1, 1, 1] [2022-11-25 18:01:47,520 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69dcac3a-a8d4-4f64-91c1-8a140ae38c4f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-25 18:01:47,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69dcac3a-a8d4-4f64-91c1-8a140ae38c4f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:01:47,719 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:01:47,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:01:47,720 INFO L85 PathProgramCache]: Analyzing trace with hash 936502703, now seen corresponding path program 1 times [2022-11-25 18:01:47,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:01:47,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623009784] [2022-11-25 18:01:47,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:01:47,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:01:47,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:01:49,728 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:01:49,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:01:49,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623009784] [2022-11-25 18:01:49,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623009784] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:01:49,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463528902] [2022-11-25 18:01:49,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:01:49,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:01:49,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69dcac3a-a8d4-4f64-91c1-8a140ae38c4f/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:01:49,735 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69dcac3a-a8d4-4f64-91c1-8a140ae38c4f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:01:49,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69dcac3a-a8d4-4f64-91c1-8a140ae38c4f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 18:01:49,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:01:49,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-25 18:01:49,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:01:51,240 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:01:51,240 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:01:53,092 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:01:53,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [463528902] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:01:53,093 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 18:01:53,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 13, 13] total 43 [2022-11-25 18:01:53,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333563428] [2022-11-25 18:01:53,094 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 18:01:53,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-11-25 18:01:53,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:01:53,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-11-25 18:01:53,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=1659, Unknown=0, NotChecked=0, Total=1806 [2022-11-25 18:01:53,097 INFO L87 Difference]: Start difference. First operand 4661 states and 6698 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) [2022-11-25 18:02:09,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:02:09,172 INFO L93 Difference]: Finished difference Result 12030 states and 15834 transitions. [2022-11-25 18:02:09,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-11-25 18:02:09,173 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 [2022-11-25 18:02:09,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:02:09,195 INFO L225 Difference]: With dead ends: 12030 [2022-11-25 18:02:09,195 INFO L226 Difference]: Without dead ends: 10598 [2022-11-25 18:02:09,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2719 ImplicationChecksByTransitivity, 13.5s TimeCoverageRelationStatistics Valid=1903, Invalid=8399, Unknown=0, NotChecked=0, Total=10302 [2022-11-25 18:02:09,202 INFO L413 NwaCegarLoop]: 1526 mSDtfsCounter, 16894 mSDsluCounter, 24651 mSDsCounter, 0 mSdLazyCounter, 1463 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16894 SdHoareTripleChecker+Valid, 26177 SdHoareTripleChecker+Invalid, 1541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-25 18:02:09,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16894 Valid, 26177 Invalid, 1541 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [78 Valid, 1463 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-25 18:02:09,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10598 states. [2022-11-25 18:02:10,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10598 to 4550. [2022-11-25 18:02:10,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4550 states, 4548 states have (on average 1.4434916446789798) internal successors, (6565), 4549 states have internal predecessors, (6565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:02:10,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4550 states to 4550 states and 6565 transitions. [2022-11-25 18:02:10,461 INFO L78 Accepts]: Start accepts. Automaton has 4550 states and 6565 transitions. Word has length 64 [2022-11-25 18:02:10,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:02:10,461 INFO L495 AbstractCegarLoop]: Abstraction has 4550 states and 6565 transitions. [2022-11-25 18:02:10,462 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) [2022-11-25 18:02:10,462 INFO L276 IsEmpty]: Start isEmpty. Operand 4550 states and 6565 transitions. [2022-11-25 18:02:10,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-25 18:02:10,463 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:02:10,464 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] [2022-11-25 18:02:10,476 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69dcac3a-a8d4-4f64-91c1-8a140ae38c4f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-25 18:02:10,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69dcac3a-a8d4-4f64-91c1-8a140ae38c4f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:02:10,677 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:02:10,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:02:10,677 INFO L85 PathProgramCache]: Analyzing trace with hash 272942991, now seen corresponding path program 1 times [2022-11-25 18:02:10,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:02:10,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722762795] [2022-11-25 18:02:10,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:02:10,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:02:10,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:02:12,112 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 16 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:02:12,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:02:12,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722762795] [2022-11-25 18:02:12,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722762795] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:02:12,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [741862361] [2022-11-25 18:02:12,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:02:12,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:02:12,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69dcac3a-a8d4-4f64-91c1-8a140ae38c4f/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:02:12,115 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69dcac3a-a8d4-4f64-91c1-8a140ae38c4f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:02:12,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69dcac3a-a8d4-4f64-91c1-8a140ae38c4f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-25 18:02:12,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:02:12,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-25 18:02:12,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:02:15,619 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 24 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:02:15,619 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:02:39,706 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 24 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:02:39,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [741862361] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:02:39,707 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 18:02:39,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 22, 22] total 57 [2022-11-25 18:02:39,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665230959] [2022-11-25 18:02:39,707 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 18:02:39,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-11-25 18:02:39,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:02:39,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-11-25 18:02:39,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=284, Invalid=2908, Unknown=0, NotChecked=0, Total=3192 [2022-11-25 18:02:39,711 INFO L87 Difference]: Start difference. First operand 4550 states and 6565 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) [2022-11-25 18:05:11,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:05:11,628 INFO L93 Difference]: Finished difference Result 18623 states and 23985 transitions. [2022-11-25 18:05:11,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 262 states. [2022-11-25 18:05:11,629 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 [2022-11-25 18:05:11,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:05:11,658 INFO L225 Difference]: With dead ends: 18623 [2022-11-25 18:05:11,658 INFO L226 Difference]: Without dead ends: 16717 [2022-11-25 18:05:11,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 481 GetRequests, 156 SyntacticMatches, 10 SemanticMatches, 315 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35824 ImplicationChecksByTransitivity, 138.1s TimeCoverageRelationStatistics Valid=11577, Invalid=88595, Unknown=0, NotChecked=0, Total=100172 [2022-11-25 18:05:11,677 INFO L413 NwaCegarLoop]: 1604 mSDtfsCounter, 31197 mSDsluCounter, 33056 mSDsCounter, 0 mSdLazyCounter, 4617 mSolverCounterSat, 307 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31197 SdHoareTripleChecker+Valid, 34660 SdHoareTripleChecker+Invalid, 4924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 307 IncrementalHoareTripleChecker+Valid, 4617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2022-11-25 18:05:11,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31197 Valid, 34660 Invalid, 4924 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [307 Valid, 4617 Invalid, 0 Unknown, 0 Unchecked, 9.2s Time] [2022-11-25 18:05:11,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16717 states. [2022-11-25 18:05:14,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16717 to 8492. [2022-11-25 18:05:15,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8492 states, 8490 states have (on average 1.3392226148409894) internal successors, (11370), 8491 states have internal predecessors, (11370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:05:15,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8492 states to 8492 states and 11370 transitions. [2022-11-25 18:05:15,020 INFO L78 Accepts]: Start accepts. Automaton has 8492 states and 11370 transitions. Word has length 103 [2022-11-25 18:05:15,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:05:15,021 INFO L495 AbstractCegarLoop]: Abstraction has 8492 states and 11370 transitions. [2022-11-25 18:05:15,021 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) [2022-11-25 18:05:15,021 INFO L276 IsEmpty]: Start isEmpty. Operand 8492 states and 11370 transitions. [2022-11-25 18:05:15,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-11-25 18:05:15,023 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:05:15,024 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] [2022-11-25 18:05:15,037 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69dcac3a-a8d4-4f64-91c1-8a140ae38c4f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-25 18:05:15,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69dcac3a-a8d4-4f64-91c1-8a140ae38c4f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-11-25 18:05:15,231 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:05:15,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:05:15,232 INFO L85 PathProgramCache]: Analyzing trace with hash -897532676, now seen corresponding path program 1 times [2022-11-25 18:05:15,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:05:15,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574103458] [2022-11-25 18:05:15,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:05:15,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:05:15,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:17,383 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 16 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:05:17,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:05:17,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574103458] [2022-11-25 18:05:17,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574103458] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:05:17,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1206747330] [2022-11-25 18:05:17,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:05:17,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:05:17,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69dcac3a-a8d4-4f64-91c1-8a140ae38c4f/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:05:17,386 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69dcac3a-a8d4-4f64-91c1-8a140ae38c4f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:05:17,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69dcac3a-a8d4-4f64-91c1-8a140ae38c4f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-25 18:05:17,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:05:17,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 39 conjunts are in the unsatisfiable core [2022-11-25 18:05:17,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:05:21,522 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 57 proven. 6 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-25 18:05:21,522 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:05:48,666 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 70 proven. 8 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-25 18:05:48,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1206747330] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:05:48,667 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 18:05:48,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 19, 25] total 63 [2022-11-25 18:05:48,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792468563] [2022-11-25 18:05:48,667 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 18:05:48,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-11-25 18:05:48,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:05:48,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-11-25 18:05:48,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=329, Invalid=3577, Unknown=0, NotChecked=0, Total=3906 [2022-11-25 18:05:48,672 INFO L87 Difference]: Start difference. First operand 8492 states and 11370 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) [2022-11-25 18:07:56,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:07:56,038 INFO L93 Difference]: Finished difference Result 25765 states and 32076 transitions. [2022-11-25 18:07:56,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 323 states. [2022-11-25 18:07:56,039 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 [2022-11-25 18:07:56,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:07:56,068 INFO L225 Difference]: With dead ends: 25765 [2022-11-25 18:07:56,069 INFO L226 Difference]: Without dead ends: 20528 [2022-11-25 18:07:56,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 550 GetRequests, 166 SyntacticMatches, 2 SemanticMatches, 382 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59623 ImplicationChecksByTransitivity, 115.1s TimeCoverageRelationStatistics Valid=17035, Invalid=130037, Unknown=0, NotChecked=0, Total=147072 [2022-11-25 18:07:56,093 INFO L413 NwaCegarLoop]: 1687 mSDtfsCounter, 29866 mSDsluCounter, 34242 mSDsCounter, 0 mSdLazyCounter, 5084 mSolverCounterSat, 300 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29866 SdHoareTripleChecker+Valid, 35929 SdHoareTripleChecker+Invalid, 5384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 300 IncrementalHoareTripleChecker+Valid, 5084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-11-25 18:07:56,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29866 Valid, 35929 Invalid, 5384 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [300 Valid, 5084 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2022-11-25 18:07:56,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20528 states. [2022-11-25 18:08:00,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20528 to 9886. [2022-11-25 18:08:00,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9886 states, 9884 states have (on average 1.3221367867260219) internal successors, (13068), 9885 states have internal predecessors, (13068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:08:00,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9886 states to 9886 states and 13068 transitions. [2022-11-25 18:08:00,456 INFO L78 Accepts]: Start accepts. Automaton has 9886 states and 13068 transitions. Word has length 104 [2022-11-25 18:08:00,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:08:00,456 INFO L495 AbstractCegarLoop]: Abstraction has 9886 states and 13068 transitions. [2022-11-25 18:08:00,457 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) [2022-11-25 18:08:00,457 INFO L276 IsEmpty]: Start isEmpty. Operand 9886 states and 13068 transitions. [2022-11-25 18:08:00,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-11-25 18:08:00,459 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:08:00,459 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] [2022-11-25 18:08:00,463 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69dcac3a-a8d4-4f64-91c1-8a140ae38c4f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-25 18:08:00,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69dcac3a-a8d4-4f64-91c1-8a140ae38c4f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:08:00,660 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:08:00,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:08:00,660 INFO L85 PathProgramCache]: Analyzing trace with hash -2047223651, now seen corresponding path program 1 times [2022-11-25 18:08:00,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:08:00,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728266638] [2022-11-25 18:08:00,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:08:00,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:08:00,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:08:03,086 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 16 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:08:03,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:08:03,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728266638] [2022-11-25 18:08:03,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728266638] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:08:03,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349971097] [2022-11-25 18:08:03,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:08:03,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:08:03,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69dcac3a-a8d4-4f64-91c1-8a140ae38c4f/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:08:03,089 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69dcac3a-a8d4-4f64-91c1-8a140ae38c4f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:08:03,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69dcac3a-a8d4-4f64-91c1-8a140ae38c4f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-25 18:08:03,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:08:03,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-25 18:08:03,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:08:04,892 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 20 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:08:04,892 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:08:08,635 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 17 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:08:08,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [349971097] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:08:08,636 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 18:08:08,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 15, 15] total 52 [2022-11-25 18:08:08,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677658688] [2022-11-25 18:08:08,636 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 18:08:08,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-11-25 18:08:08,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:08:08,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-11-25 18:08:08,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=2458, Unknown=0, NotChecked=0, Total=2652 [2022-11-25 18:08:08,642 INFO L87 Difference]: Start difference. First operand 9886 states and 13068 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) [2022-11-25 18:09:21,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:09:21,712 INFO L93 Difference]: Finished difference Result 29505 states and 36323 transitions. [2022-11-25 18:09:21,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 182 states. [2022-11-25 18:09:21,712 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 [2022-11-25 18:09:21,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:09:21,739 INFO L225 Difference]: With dead ends: 29505 [2022-11-25 18:09:21,739 INFO L226 Difference]: Without dead ends: 26372 [2022-11-25 18:09:21,748 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 229 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18966 ImplicationChecksByTransitivity, 55.4s TimeCoverageRelationStatistics Valid=7474, Invalid=45656, Unknown=0, NotChecked=0, Total=53130 [2022-11-25 18:09:21,749 INFO L413 NwaCegarLoop]: 1554 mSDtfsCounter, 25284 mSDsluCounter, 27977 mSDsCounter, 0 mSdLazyCounter, 2940 mSolverCounterSat, 316 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25284 SdHoareTripleChecker+Valid, 29531 SdHoareTripleChecker+Invalid, 3256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 316 IncrementalHoareTripleChecker+Valid, 2940 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-25 18:09:21,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25284 Valid, 29531 Invalid, 3256 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [316 Valid, 2940 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-11-25 18:09:21,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26372 states. [2022-11-25 18:09:29,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26372 to 13881. [2022-11-25 18:09:29,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13881 states, 13879 states have (on average 1.2946177678507098) internal successors, (17968), 13880 states have internal predecessors, (17968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:09:29,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13881 states to 13881 states and 17968 transitions. [2022-11-25 18:09:29,445 INFO L78 Accepts]: Start accepts. Automaton has 13881 states and 17968 transitions. Word has length 105 [2022-11-25 18:09:29,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:09:29,445 INFO L495 AbstractCegarLoop]: Abstraction has 13881 states and 17968 transitions. [2022-11-25 18:09:29,445 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) [2022-11-25 18:09:29,445 INFO L276 IsEmpty]: Start isEmpty. Operand 13881 states and 17968 transitions. [2022-11-25 18:09:29,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-11-25 18:09:29,447 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:09:29,448 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] [2022-11-25 18:09:29,454 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69dcac3a-a8d4-4f64-91c1-8a140ae38c4f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-25 18:09:29,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69dcac3a-a8d4-4f64-91c1-8a140ae38c4f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-11-25 18:09:29,653 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:09:29,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:09:29,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1395528875, now seen corresponding path program 1 times [2022-11-25 18:09:29,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:09:29,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035297531] [2022-11-25 18:09:29,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:09:29,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:09:29,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:09:31,231 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 35 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:09:31,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:09:31,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035297531] [2022-11-25 18:09:31,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035297531] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:09:31,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1290815691] [2022-11-25 18:09:31,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:09:31,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:09:31,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69dcac3a-a8d4-4f64-91c1-8a140ae38c4f/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:09:31,232 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69dcac3a-a8d4-4f64-91c1-8a140ae38c4f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:09:31,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69dcac3a-a8d4-4f64-91c1-8a140ae38c4f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-25 18:09:31,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:09:31,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 45 conjunts are in the unsatisfiable core [2022-11-25 18:09:31,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:09:35,493 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 35 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:09:35,493 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:09:45,656 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 33 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:09:45,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1290815691] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:09:45,656 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 18:09:45,656 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 64 [2022-11-25 18:09:45,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834516717] [2022-11-25 18:09:45,657 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 18:09:45,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-11-25 18:09:45,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:09:45,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-11-25 18:09:45,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=444, Invalid=3588, Unknown=0, NotChecked=0, Total=4032 [2022-11-25 18:09:45,659 INFO L87 Difference]: Start difference. First operand 13881 states and 17968 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)